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103508 Commits

Author SHA1 Message Date
Sebastian Andrzej Siewior
6b51e88199 mm/list_lru: introduce list_lru_shrink_walk_irq() 
Provide list_lru_shrink_walk_irq() and let it behave like
list_lru_walk_one() except that it locks the spinlock with
spin_lock_irq().  This is used by scan_shadow_nodes() because its lock
nests within the i_pages lock which is acquired with IRQ.  This change
allows to use proper locking promitives instead hand crafted
lock_irq_disable() plus spin_lock().

There is no EXPORT_SYMBOL provided because the current user is in-kernel
only.

Add list_lru_shrink_walk_irq() which acquires the spinlock with the
proper locking primitives.

Link: http://lkml.kernel.org/r/20180716111921.5365-5-bigeasy@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Pavel Tatashin
2a3cb8baef mm/sparse: delete old sparse_init and enable new one 
Rename new_sparse_init() to sparse_init() which enables it.  Delete old
sparse_init() and all the code that became obsolete with.

[pasha.tatashin@oracle.com: remove unused sparse_mem_maps_populate_node()]
  Link: http://lkml.kernel.org/r/20180716174447.14529-6-pasha.tatashin@oracle.com
Link: http://lkml.kernel.org/r/20180712203730.8703-6-pasha.tatashin@oracle.com
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Tested-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Pavel Tatashin
afda57bc13 mm/sparse: move buffer init/fini to the common place 
Now that both variants of sparse memory use the same buffers to populate
memory map, we can move sparse_buffer_init()/sparse_buffer_fini() to the
common place.

Link: http://lkml.kernel.org/r/20180712203730.8703-4-pasha.tatashin@oracle.com
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Tested-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Pavel Tatashin
35fd1eb1e8 mm/sparse: abstract sparse buffer allocations 
Patch series "sparse_init rewrite", v6.

In sparse_init() we allocate two large buffers to temporary hold usemap
and memmap for the whole machine.  However, we can avoid doing that if
we changed sparse_init() to operated on per-node bases instead of doing
it on the whole machine beforehand.

As shown by Baoquan
  http://lkml.kernel.org/r/20180628062857.29658-1-bhe@redhat.com

The buffers are large enough to cause machine stop to boot on small
memory systems.

Another benefit of these changes is that they also obsolete
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER.

This patch (of 5):

When struct pages are allocated for sparse-vmemmap VA layout, we first try
to allocate one large buffer, and than if that fails allocate struct pages
for each section as we go.

The code that allocates buffer is uses global variables and is spread
across several call sites.

Cleanup the code by introducing three functions to handle the global
buffer:

sparse_buffer_init()	initialize the buffer
sparse_buffer_fini()	free the remaining part of the buffer
sparse_buffer_alloc()	alloc from the buffer, and if buffer is empty
return NULL

Define these functions in sparse.c instead of sparse-vmemmap.c because
later we will use them for non-vmemmap sparse allocations as well.

[akpm@linux-foundation.org: use PTR_ALIGN()]
[akpm@linux-foundation.org: s/BUG_ON/WARN_ON/]
Link: http://lkml.kernel.org/r/20180712203730.8703-2-pasha.tatashin@oracle.com
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Tested-by: Oscar Salvador <osalvador@suse.de>
Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Mike Kravetz
40d18ebffb mm/hugetlb: remove gigantic page support for HIGHMEM 
This reverts ee8f248d26 ("hugetlb: add phys addr to struct
huge_bootmem_page").

At one time powerpc used this field and supporting code.  However that
was removed with commit 79cc38ded1 ("powerpc/mm/hugetlb: Add support
for reserving gigantic huge pages via kernel command line").

There are no users of this field and supporting code, so remove it.

Link: http://lkml.kernel.org/r/20180711195913.1294-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Cannon Matthews <cannonmatthews@google.com>
Cc: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Marek Szyprowski
d834c5ab83 kernel/dma: remove unsupported gfp_mask parameter from dma_alloc_from_contiguous() 
The CMA memory allocator doesn't support standard gfp flags for memory
allocation, so there is no point having it as a parameter for
dma_alloc_from_contiguous() function.  Replace it by a boolean no_warn
argument, which covers all the underlaying cma_alloc() function
supports.

This will help to avoid giving false feeling that this function supports
standard gfp flags and callers can pass __GFP_ZERO to get zeroed buffer,
what has already been an issue: see commit dd65a941f6 ("arm64:
dma-mapping: clear buffers allocated with FORCE_CONTIGUOUS flag").

Link: http://lkml.kernel.org/r/20180709122020eucas1p21a71b092975cb4a3b9954ffc63f699d1~-sqUFoa-h2939329393eucas1p2Y@eucas1p2.samsung.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Michał Nazarewicz <mina86@mina86.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Marek Szyprowski
6518202970 mm/cma: remove unsupported gfp_mask parameter from cma_alloc() 
cma_alloc() doesn't really support gfp flags other than __GFP_NOWARN, so
convert gfp_mask parameter to boolean no_warn parameter.

This will help to avoid giving false feeling that this function supports
standard gfp flags and callers can pass __GFP_ZERO to get zeroed buffer,
what has already been an issue: see commit dd65a941f6 ("arm64:
dma-mapping: clear buffers allocated with FORCE_CONTIGUOUS flag").

Link: http://lkml.kernel.org/r/20180709122019eucas1p2340da484acfcc932537e6014f4fd2c29~-sqTPJKij2939229392eucas1p2j@eucas1p2.samsung.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Michał Nazarewicz <mina86@mina86.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:32 -07:00
Kirill Tkhai
9b996468cf mm: add SHRINK_EMPTY shrinker methods return value 
We need to distinguish the situations when shrinker has very small
amount of objects (see vfs_pressure_ratio() called from
super_cache_count()), and when it has no objects at all.  Currently, in
the both of these cases, shrinker::count_objects() returns 0.

The patch introduces new SHRINK_EMPTY return value, which will be used
for "no objects at all" case.  It's is a refactoring mostly, as
SHRINK_EMPTY is replaced by 0 by all callers of do_shrink_slab() in this
patch, and all the magic will happen in further.

Link: http://lkml.kernel.org/r/153063069574.1818.11037751256699341813.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:31 -07:00
Kirill Tkhai
fae91d6d8b mm/list_lru.c: set bit in memcg shrinker bitmap on first list_lru item appearance 
Introduce set_shrinker_bit() function to set shrinker-related bit in
memcg shrinker bitmap, and set the bit after the first item is added and
in case of reparenting destroyed memcg's items.

This will allow next patch to make shrinkers be called only, in case of
they have charged objects at the moment, and to improve shrink_slab()
performance.

[ktkhai@virtuozzo.com: v9]
  Link: http://lkml.kernel.org/r/153112557572.4097.17315791419810749985.stgit@localhost.localdomain
Link: http://lkml.kernel.org/r/153063065671.1818.15914674956134687268.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:31 -07:00
Kirill Tkhai
dfd2f10ccf mm/memcontrol.c: export mem_cgroup_is_root() 
This will be used in next patch.

Link: http://lkml.kernel.org/r/153063064347.1818.1987011484100392706.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:31 -07:00
Kirill Tkhai
9bec5c35bf mm/list_lru: pass dst_memcg argument to memcg_drain_list_lru_node() 
This is just refactoring to allow the next patches to have dst_memcg
pointer in memcg_drain_list_lru_node().

Link: http://lkml.kernel.org/r/153063062118.1818.2761273817739499749.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:31 -07:00
Kirill Tkhai
c92e8e10ca fs: propagate shrinker::id to list_lru 
Add list_lru::shrinker_id field and populate it by registered shrinker
id.

This will be used to set correct bit in memcg shrinkers map by lru code
in next patches, after there appeared the first related to memcg element
in list_lru.

Link: http://lkml.kernel.org/r/153063059758.1818.14866596416857717800.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:31 -07:00
Kirill Tkhai
0a4465d340 mm, memcg: assign memcg-aware shrinkers bitmap to memcg 
Imagine a big node with many cpus, memory cgroups and containers.  Let
we have 200 containers, every container has 10 mounts, and 10 cgroups.
All container tasks don't touch foreign containers mounts.  If there is
intensive pages write, and global reclaim happens, a writing task has to
iterate over all memcgs to shrink slab, before it's able to go to
shrink_page_list().

Iteration over all the memcg slabs is very expensive: the task has to
visit 200 * 10 = 2000 shrinkers for every memcg, and since there are
2000 memcgs, the total calls are 2000 * 2000 = 4000000.

So, the shrinker makes 4 million do_shrink_slab() calls just to try to
isolate SWAP_CLUSTER_MAX pages in one of the actively writing memcg via
shrink_page_list().  I've observed a node spending almost 100% in
kernel, making useless iteration over already shrinked slab.

This patch adds bitmap of memcg-aware shrinkers to memcg.  The size of
the bitmap depends on bitmap_nr_ids, and during memcg life it's
maintained to be enough to fit bitmap_nr_ids shrinkers.  Every bit in
the map is related to corresponding shrinker id.

Next patches will maintain set bit only for really charged memcg.  This
will allow shrink_slab() to increase its performance in significant way.
See the last patch for the numbers.

[ktkhai@virtuozzo.com: v9]
  Link: http://lkml.kernel.org/r/153112549031.4097.3576147070498769979.stgit@localhost.localdomain
[ktkhai@virtuozzo.com: add comment to mem_cgroup_css_online()]
  Link: http://lkml.kernel.org/r/521f9e5f-c436-b388-fe83-4dc870bfb489@virtuozzo.com
Link: http://lkml.kernel.org/r/153063056619.1818.12550500883688681076.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Kirill Tkhai
b4c2b231c3 mm: assign id to every memcg-aware shrinker 
Introduce shrinker::id number, which is used to enumerate memcg-aware
shrinkers.  The number start from 0, and the code tries to maintain it
as small as possible.

This will be used to represent a memcg-aware shrinkers in memcg
shrinkers map.

Since all memcg-aware shrinkers are based on list_lru, which is
per-memcg in case of !CONFIG_MEMCG_KMEM only, the new functionality will
be under this config option.

[ktkhai@virtuozzo.com: v9]
  Link: http://lkml.kernel.org/r/153112546435.4097.10607140323811756557.stgit@localhost.localdomain
Link: http://lkml.kernel.org/r/153063054586.1818.6041047871606697364.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Kirill Tkhai
84c07d11aa mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB 
Introduce new config option, which is used to replace repeating
CONFIG_MEMCG && !CONFIG_SLOB pattern.  Next patches add a little more
memcg+kmem related code, so let's keep the defines more clearly.

Link: http://lkml.kernel.org/r/153063053670.1818.15013136946600481138.stgit@localhost.localdomain
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Li RongQing <lirongqing@baidu.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Michal Hocko
29ef680ae7 memcg, oom: move out_of_memory back to the charge path 
Commit 3812c8c8f3 ("mm: memcg: do not trap chargers with full
callstack on OOM") has changed the ENOMEM semantic of memcg charges.
Rather than invoking the oom killer from the charging context it delays
the oom killer to the page fault path (pagefault_out_of_memory).  This
in turn means that many users (e.g.  slab or g-u-p) will get ENOMEM when
the corresponding memcg hits the hard limit and the memcg is is OOM.
This is behavior is inconsistent with !memcg case where the oom killer
is invoked from the allocation context and the allocator keeps retrying
until it succeeds.

The difference in the behavior is user visible.  mmap(MAP_POPULATE)
might result in not fully populated ranges while the mmap return code
doesn't tell that to the userspace.  Random syscalls might fail with
ENOMEM etc.

The primary motivation of the different memcg oom semantic was the
deadlock avoidance.  Things have changed since then, though.  We have an
async oom teardown by the oom reaper now and so we do not have to rely
on the victim to tear down its memory anymore.  Therefore we can return
to the original semantic as long as the memcg oom killer is not handed
over to the users space.

There is still one thing to be careful about here though.  If the oom
killer is not able to make any forward progress - e.g.  because there is
no eligible task to kill - then we have to bail out of the charge path
to prevent from same class of deadlocks.  We have basically two options
here.  Either we fail the charge with ENOMEM or force the charge and
allow overcharge.  The first option has been considered more harmful
than useful because rare inconsistencies in the ENOMEM behavior is hard
to test for and error prone.  Basically the same reason why the page
allocator doesn't fail allocations under such conditions.  The later
might allow runaways but those should be really unlikely unless somebody
misconfigures the system.  E.g.  allowing to migrate tasks away from the
memcg to a different unlimited memcg with move_charge_at_immigrate
disabled.

Link: http://lkml.kernel.org/r/20180628151101.25307-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Andrey Ryabinin
0207df4fa1 kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN 
KASAN learns about hotadded memory via the memory hotplug notifier.
devm_memremap_pages() intentionally skips calling memory hotplug
notifiers.  So KASAN doesn't know anything about new memory added by
devm_memremap_pages().  This causes a crash when KASAN tries to access
non-existent shadow memory:

 BUG: unable to handle kernel paging request at ffffed0078000000
 RIP: 0010:check_memory_region+0x82/0x1e0
 Call Trace:
  memcpy+0x1f/0x50
  pmem_do_bvec+0x163/0x720
  pmem_make_request+0x305/0xac0
  generic_make_request+0x54f/0xcf0
  submit_bio+0x9c/0x370
  submit_bh_wbc+0x4c7/0x700
  block_read_full_page+0x5ef/0x870
  do_read_cache_page+0x2b8/0xb30
  read_dev_sector+0xbd/0x3f0
  read_lba.isra.0+0x277/0x670
  efi_partition+0x41a/0x18f0
  check_partition+0x30d/0x5e9
  rescan_partitions+0x18c/0x840
  __blkdev_get+0x859/0x1060
  blkdev_get+0x23f/0x810
  __device_add_disk+0x9c8/0xde0
  pmem_attach_disk+0x9a8/0xf50
  nvdimm_bus_probe+0xf3/0x3c0
  driver_probe_device+0x493/0xbd0
  bus_for_each_drv+0x118/0x1b0
  __device_attach+0x1cd/0x2b0
  bus_probe_device+0x1ac/0x260
  device_add+0x90d/0x1380
  nd_async_device_register+0xe/0x50
  async_run_entry_fn+0xc3/0x5d0
  process_one_work+0xa0a/0x1810
  worker_thread+0x87/0xe80
  kthread+0x2d7/0x390
  ret_from_fork+0x3a/0x50

Add kasan_add_zero_shadow()/kasan_remove_zero_shadow() - post mm_init()
interface to map/unmap kasan_zero_page at requested virtual addresses.
And use it to add/remove the shadow memory for hotplugged/unplugged
device memory.

Link: http://lkml.kernel.org/r/20180629164932.740-1-aryabinin@virtuozzo.com
Fixes: 41e94a8513 ("add devm_memremap_pages")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reported-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Shakeel Butt
f745c6f5fe fs, mm: account buffer_head to kmemcg 
The buffer_head can consume a significant amount of system memory and is
directly related to the amount of page cache.  In our production
environment we have observed that a lot of machines are spending a
significant amount of memory as buffer_head and can not be left as
system memory overhead.

Charging buffer_head is not as simple as adding __GFP_ACCOUNT to the
allocation.  The buffer_heads can be allocated in a memcg different from
the memcg of the page for which buffer_heads are being allocated.  One
concrete example is memory reclaim.  The reclaim can trigger I/O of
pages of any memcg on the system.  So, the right way to charge
buffer_head is to extract the memcg from the page for which buffer_heads
are being allocated and then use targeted memcg charging API.

[shakeelb@google.com: use __GFP_ACCOUNT for directed memcg charging]
  Link: http://lkml.kernel.org/r/20180702220208.213380-1-shakeelb@google.com
Link: http://lkml.kernel.org/r/20180627191250.209150-3-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Shakeel Butt
d46eb14b73 fs: fsnotify: account fsnotify metadata to kmemcg 
Patch series "Directed kmem charging", v8.

The Linux kernel's memory cgroup allows limiting the memory usage of the
jobs running on the system to provide isolation between the jobs.  All
the kernel memory allocated in the context of the job and marked with
__GFP_ACCOUNT will also be included in the memory usage and be limited
by the job's limit.

The kernel memory can only be charged to the memcg of the process in
whose context kernel memory was allocated.  However there are cases
where the allocated kernel memory should be charged to the memcg
different from the current processes's memcg.  This patch series
contains two such concrete use-cases i.e.  fsnotify and buffer_head.

The fsnotify event objects can consume a lot of system memory for large
or unlimited queues if there is either no or slow listener.  The events
are allocated in the context of the event producer.  However they should
be charged to the event consumer.  Similarly the buffer_head objects can
be allocated in a memcg different from the memcg of the page for which
buffer_head objects are being allocated.

To solve this issue, this patch series introduces mechanism to charge
kernel memory to a given memcg.  In case of fsnotify events, the memcg
of the consumer can be used for charging and for buffer_head, the memcg
of the page can be charged.  For directed charging, the caller can use
the scope API memalloc_[un]use_memcg() to specify the memcg to charge
for all the __GFP_ACCOUNT allocations within the scope.

This patch (of 2):

A lot of memory can be consumed by the events generated for the huge or
unlimited queues if there is either no or slow listener.  This can cause
system level memory pressure or OOMs.  So, it's better to account the
fsnotify kmem caches to the memcg of the listener.

However the listener can be in a different memcg than the memcg of the
producer and these allocations happen in the context of the event
producer.  This patch introduces remote memcg charging API which the
producer can use to charge the allocations to the memcg of the listener.

There are seven fsnotify kmem caches and among them allocations from
dnotify_struct_cache, dnotify_mark_cache, fanotify_mark_cache and
inotify_inode_mark_cachep happens in the context of syscall from the
listener.  So, SLAB_ACCOUNT is enough for these caches.

The objects from fsnotify_mark_connector_cachep are not accounted as
they are small compared to the notification mark or events and it is
unclear whom to account connector to since it is shared by all events
attached to the inode.

The allocations from the event caches happen in the context of the event
producer.  For such caches we will need to remote charge the allocations
to the listener's memcg.  Thus we save the memcg reference in the
fsnotify_group structure of the listener.

This patch has also moved the members of fsnotify_group to keep the size
same, at least for 64 bit build, even with additional member by filling
the holes.

[shakeelb@google.com: use GFP_KERNEL_ACCOUNT rather than open-coding it]
  Link: http://lkml.kernel.org/r/20180702215439.211597-1-shakeelb@google.com
Link: http://lkml.kernel.org/r/20180627191250.209150-2-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:30 -07:00
Roman Gushchin
dc0b58643a mm: introduce mem_cgroup_put() helper 
Introduce the mem_cgroup_put() helper, which helps to eliminate guarding
memcg css release with "#ifdef CONFIG_MEMCG" in multiple places.

Link: http://lkml.kernel.org/r/20180623000600.5818-2-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Luis R. Rodriguez
1a9b4b3d75 mm: provide a fallback for PAGE_KERNEL_EXEC for architectures 
Some architectures just don't have PAGE_KERNEL_EXEC.  The mm/nommu.c and
mm/vmalloc.c code have been using PAGE_KERNEL as a fallback for years.
Move this fallback to asm-generic.

Link: http://lkml.kernel.org/r/20180510185507.2439-3-mcgrof@kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Luis R. Rodriguez
a3266bd49c mm: provide a fallback for PAGE_KERNEL_RO for architectures 
Some architectures do not define certain PAGE_KERNEL_* flags, this is
either because:

 a) The way to implement some of these flags is *not yet ported*, or
 b) The architecture *has no way* to describe them

Over time we have accumulated a few PAGE_KERNEL_* fallback workarounds
for architectures in the kernel which do not define them using
*relatively safe* equivalents.  Move these scattered fallback hacks into
asm-generic.

We start off with PAGE_KERNEL_RO using PAGE_KERNEL as a fallback.  This
has been in place on the firmware loader for years.  Move the fallback
into the respective asm-generic header.

Link: http://lkml.kernel.org/r/20180510185507.2439-2-mcgrof@kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Oscar Salvador
4fbce63391 mm/memory_hotplug.c: make register_mem_sect_under_node() a callback of walk_memory_range() 
link_mem_sections() and walk_memory_range() share most of the code, so
we can use convert link_mem_sections() into a dummy function that calls
walk_memory_range() with a callback to register_mem_sect_under_node().

This patch converts register_mem_sect_under_node() in order to match a
walk_memory_range's callback, getting rid of the check_nid argument and
checking instead if the system is still boothing, since we only have to
check for the nid if the system is in such state.

Link: http://lkml.kernel.org/r/20180622111839.10071-4-osalvador@techadventures.net
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Suggested-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Tested-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Huang Ying
c9f4cd7138 mm, huge page: copy target sub-page last when copy huge page 
Huge page helps to reduce TLB miss rate, but it has higher cache
footprint, sometimes this may cause some issue.  For example, when
copying huge page on x86_64 platform, the cache footprint is 4M.  But on
a Xeon E5 v3 2699 CPU, there are 18 cores, 36 threads, and only 45M LLC
(last level cache).  That is, in average, there are 2.5M LLC for each
core and 1.25M LLC for each thread.

If the cache contention is heavy when copying the huge page, and we copy
the huge page from the begin to the end, it is possible that the begin
of huge page is evicted from the cache after we finishing copying the
end of the huge page.  And it is possible for the application to access
the begin of the huge page after copying the huge page.

In c79b57e462 ("mm: hugetlb: clear target sub-page last when clearing
huge page"), to keep the cache lines of the target subpage hot, the
order to clear the subpages in the huge page in clear_huge_page() is
changed to clearing the subpage which is furthest from the target
subpage firstly, and the target subpage last.  The similar order
changing helps huge page copying too.  That is implemented in this
patch.  Because we have put the order algorithm into a separate
function, the implementation is quite simple.

The patch is a generic optimization which should benefit quite some
workloads, not for a specific use case.  To demonstrate the performance
benefit of the patch, we tested it with vm-scalability run on
transparent huge page.

With this patch, the throughput increases ~16.6% in vm-scalability
anon-cow-seq test case with 36 processes on a 2 socket Xeon E5 v3 2699
system (36 cores, 72 threads).  The test case set
/sys/kernel/mm/transparent_hugepage/enabled to be always, mmap() a big
anonymous memory area and populate it, then forked 36 child processes,
each writes to the anonymous memory area from the begin to the end, so
cause copy on write.  For each child process, other child processes
could be seen as other workloads which generate heavy cache pressure.
At the same time, the IPC (instruction per cycle) increased from 0.63 to
0.78, and the time spent in user space is reduced ~7.2%.

Link: http://lkml.kernel.org/r/20180524005851.4079-3-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shaohua Li <shli@fb.com>
Cc: Christopher Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Jens Axboe
74c8164e1c mpage: mpage_readpages() should submit IO as read-ahead 
a_ops->readpages() is only ever used for read-ahead, yet we don't flag
the IO being submitted as such.  Fix that up.  Any file system that uses
mpage_readpages() as its ->readpages() implementation will now get this
right.

Since we're passing in whether the IO is read-ahead or not, we don't
need to pass in the 'gfp' separately, as it is dependent on the IO being
read-ahead.  Kill off that member.

Add some documentation notes on ->readpages() being purely for
read-ahead.

Link: http://lkml.kernel.org/r/20180621010725.17813-3-axboe@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <clm@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:29 -07:00
Kirill A. Shutemov
10ed634152 mm/page_ext.c: constify lookup_page_ext() argument 
lookup_page_ext() finds 'struct page_ext' for a given page.  It requires
only read access to the given struct page.

Current implemnentation takes 'struct page *' as an argument.  It makes
compiler complain when 'const struct page *' passed.

Change the argument to 'const struct page *'.

Link: http://lkml.kernel.org/r/20180531135457.20167-3-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:28 -07:00
Kirill A. Shutemov
b3a2369692 include/linux/page_ext.h: drop definition of unused PAGE_EXT_DEBUG_POISON 
After commit bd33ef3681 ("mm: enable page poisoning early at boot")
PAGE_EXT_DEBUG_POISON is not longer used.  Remove it.

Link: http://lkml.kernel.org/r/20180531135457.20167-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:28 -07:00
NeilBrown
4cdfffc872 vfs: discard ATTR_ATTR_FLAG 
This flag was introduce in 2.1.37pre1 and the only place it was tested
was removed in 2.1.43pre1.  The flag was never set.

Let's discard it properly.

Link: http://lkml.kernel.org/r/877en0hewz.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:28 -07:00
Arnd Bergmann
e36488c83b bitfield: avoid gcc-8 -Wint-in-bool-context warning 
Passing an enum into FIELD_GET() produces a long but harmless warning on
newer compilers:

                   from include/linux/linkage.h:7,
                   from include/linux/kernel.h:7,
                   from include/linux/skbuff.h:17,
                   from include/linux/if_ether.h:23,
                   from include/linux/etherdevice.h:25,
                   from drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c:63:
  drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c: In function 'iwl_mvm_rx_mpdu_mq':
  include/linux/bitfield.h:56:20: error: enum constant in boolean context [-Werror=int-in-bool-context]
     BUILD_BUG_ON_MSG(!(_mask), _pfx "mask is zero"); \
                      ^
  ...
  include/linux/bitfield.h:103:3: note: in expansion of macro '__BF_FIELD_CHECK'
     __BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
     ^~~~~~~~~~~~~~~~
  drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c:1025:21: note: in expansion of macro 'FIELD_GET'
      le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIBG_SYM_OR_USER_NUM_MASK,

The problem here is that the caller has no idea how the macro gets
expanding, leading to a false-positive.  It can be trivially avoided by
doing a comparison against zero.

This only recently started appearing as the iwlwifi driver was patched
to use FIELD_GET.

Link: http://lkml.kernel.org/r/20180813220950.194841-1-arnd@arndb.de
Fixes: 514c30696f ("iwlwifi: add support for IEEE802.11ax")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-17 16:20:27 -07:00
Linus Torvalds
9502f0d1d9 Merge tag 'mailbox-v4.19' of git://git.linaro.org/landing-teams/working/fujitsu/integration 
Pull mailbox updates from Jassi Brar:

 - xgene: potential null pointer fix

 - omap: switch to spdx license and use of_device_get_match_data() to
   match data

 - ti-msgmgr: cleanup and optimisation. New TI specific feature - secure
   proxy thread.

 - mediatek: add driver for CMDQ controller.

 - nxp: add driver for MU controller

* tag 'mailbox-v4.19' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  mailbox: Add support for i.MX messaging unit
  dt-bindings: mailbox: imx-mu: add generic MU channel support
  dt-bindings: arm: fsl: add mu binding doc
  mailbox: add MODULE_LICENSE() for mtk-cmdq-mailbox.c
  mailbox: mediatek: Add Mediatek CMDQ driver
  dt-bindings: soc: Add documentation for the MediaTek GCE unit
  mailbox: ti-msgmgr: Add support for Secure Proxy
  dt-bindings: mailbox: Add support for secure proxy threads
  mailbox: ti-msgmgr: Move the memory region name to descriptor
  mailbox: ti-msgmgr: Change message count mask to be descriptor based
  mailbox: ti-msgmgr: Allocate Rx channel resources only on request
  mailbox: ti-msgmgr: Get rid of unused structure members
  mailbox/omap: use of_device_get_match_data() to get match data
  mailbox/omap: switch to SPDX license identifier
  mailbox: xgene-slimpro: Fix potential NULL pointer dereference
 2018-08-16 10:16:08 -07:00
Yannik Sembritzki
817aef2600 Replace magic for trusting the secondary keyring with #define 
Replace the use of a magic number that indicates that verify_*_signature()
should use the secondary keyring with a symbol.

Signed-off-by: Yannik Sembritzki <yannik@sembritzki.me>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: keyrings@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-08-16 09:57:20 -07:00
Linus Torvalds
4e31843f68 Merge tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci 
Pull pci updates from Bjorn Helgaas:

 - Decode AER errors with names similar to "lspci" (Tyler Baicar)

 - Expose AER statistics in sysfs (Rajat Jain)

 - Clear AER status bits selectively based on the type of recovery (Oza
   Pawandeep)

 - Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru
   Gagniuc)

 - Don't clear AER status bits if we're using the "Firmware-First"
   strategy where firmware owns the registers (Alexandru Gagniuc)

 - Use sysfs_match_string() to simplify ASPM sysfs parsing (Andy
   Shevchenko)

 - Remove unnecessary includes of <linux/pci-aspm.h> (Bjorn Helgaas)

 - Defer DPC event handling to work queue (Keith Busch)

 - Use threaded IRQ for DPC bottom half (Keith Busch)

 - Print AER status while handling DPC events (Keith Busch)

 - Work around IDT switch ACS Source Validation erratum (James
   Puthukattukaran)

 - Emit diagnostics for all cases of PCIe Link downtraining (Links
   operating slower than they're capable of) (Alexandru Gagniuc)

 - Skip VFs when configuring Max Payload Size (Myron Stowe)

 - Reduce Root Port Max Payload Size if necessary when hot-adding a
   device below it (Myron Stowe)

 - Simplify SHPC existence/permission checks (Bjorn Helgaas)

 - Remove hotplug sample skeleton driver (Lukas Wunner)

 - Convert pciehp to threaded IRQ handling (Lukas Wunner)

 - Improve pciehp tolerance of missed events and initially unstable
   links (Lukas Wunner)

 - Clear spurious pciehp events on resume (Lukas Wunner)

 - Add pciehp runtime PM support, including for Thunderbolt controllers
   (Lukas Wunner)

 - Support interrupts from pciehp bridges in D3hot (Lukas Wunner)

 - Mark fall-through switch cases before enabling -Wimplicit-fallthrough
   (Gustavo A. R. Silva)

 - Move DMA-debug PCI init from arch code to PCI core (Christoph
   Hellwig)

 - Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is
   supplied (Heiner Kallweit)

 - Unify PCI and DMA direction #defines (Shunyong Yang)

 - Add PCI_DEVICE_DATA() macro (Andy Shevchenko)

 - Check for VPD completion before checking for timeout (Bert Kenward)

 - Limit Netronome NFP5000 config space size to work around erratum
   (Jakub Kicinski)

 - Set IRQCHIP_ONESHOT_SAFE for PCI MSI irqchips (Heiner Kallweit)

 - Document ACPI description of PCI host bridges (Bjorn Helgaas)

 - Add "pci=disable_acs_redir=" parameter to disable ACS redirection for
   peer-to-peer DMA support (we don't have the peer-to-peer support yet;
   this is just one piece) (Logan Gunthorpe)

 - Clean up devm_of_pci_get_host_bridge_resources() resource allocation
   (Jan Kiszka)

 - Fixup resizable BARs after suspend/resume (Christian König)

 - Make "pci=earlydump" generic (Sinan Kaya)

 - Fix ROM BAR access routines to stay in bounds and check for signature
   correctly (Rex Zhu)

 - Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer)

 - Expand documentation for pci_add_dma_alias() (Logan Gunthorpe)

 - To avoid bus errors, enable PASID only if entire path supports
   End-End TLP prefixes (Sinan Kaya)

 - Unify slot and bus reset functions and remove hotplug knowledge from
   callers (Sinan Kaya)

 - Add Function-Level Reset quirks for Intel and Samsung NVMe devices to
   fix guest reboot issues (Alex Williamson)

 - Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD
   Controller (Bjorn Helgaas)

 - Remove Xilinx AXI-PCIe host bridge arch dependency (Palmer Dabbelt)

 - Remove Aardvark outbound window configuration (Evan Wang)

 - Fix Aardvark bridge window sizing issue (Zachary Zhang)

 - Convert Aardvark to use pci_host_probe() to reduce code duplication
   (Thomas Petazzoni)

 - Correct the Cadence cdns_pcie_writel() signature (Alan Douglas)

 - Add Cadence support for optional generic PHYs (Alan Douglas)

 - Add Cadence power management ops (Alan Douglas)

 - Remove redundant variable from Cadence driver (Colin Ian King)

 - Add Kirin MSI support (Xiaowei Song)

 - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone,
   armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn
   Guo)

 - Move link notification settings from DesignWare core to individual
   drivers (Gustavo Pimentel)

 - Add endpoint library MSI-X interfaces (Gustavo Pimentel)

 - Correct signature of endpoint library IRQ interfaces (Gustavo
   Pimentel)

 - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel)

 - Add endpoint library MSI-X test support (Gustavo Pimentel)

 - Remove unnecessary GFP_ATOMIC from Hyper-V "new child" allocation
   (Jia-Ju Bai)

 - Add more devices to Broadcom PAXC quirk (Ray Jui)

 - Work around corrupted Broadcom PAXC config space to enable SMMU and
   GICv3 ITS (Ray Jui)

 - Disable MSI parsing to work around broken Broadcom PAXC logic in some
   devices (Ray Jui)

 - Hide unconfigured functions to work around a Broadcom PAXC defect
   (Ray Jui)

 - Lower iproc log level to reduce console output during boot (Ray Jui)

 - Fix mobiveil iomem/phys_addr_t type usage (Lorenzo Pieralisi)

 - Fix mobiveil missing include file (Lorenzo Pieralisi)

 - Add mobiveil Kconfig/Makefile support (Lorenzo Pieralisi)

 - Fix mvebu I/O space remapping issues (Thomas Petazzoni)

 - Use generic pci_host_bridge in mvebu instead of ARM-specific API
   (Thomas Petazzoni)

 - Whitelist VMD devices with fast interrupt handlers to avoid sharing
   vectors with slow handlers (Keith Busch)

* tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (153 commits)
  PCI/AER: Don't clear AER bits if error handling is Firmware-First
  PCI: Limit config space size for Netronome NFP5000
  PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips
  PCI/VPD: Check for VPD access completion before checking for timeout
  PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry
  PCI: Match Root Port's MPS to endpoint's MPSS as necessary
  PCI: Skip MPS logic for Virtual Functions (VFs)
  PCI: Add function 1 DMA alias quirk for Marvell 88SS9183
  PCI: Check for PCIe Link downtraining
  PCI: Add ACS Redirect disable quirk for Intel Sunrise Point
  PCI: Add device-specific ACS Redirect disable infrastructure
  PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE
  PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support
  PCI: Allow specifying devices using a base bus and path of devfns
  PCI: Make specifying PCI devices in kernel parameters reusable
  PCI: Hide ACS quirk declarations inside PCI core
  PCI: Delay after FLR of Intel DC P3700 NVMe
  PCI: Disable Samsung SM961/PM961 NVMe before FLR
  PCI: Export pcie_has_flr()
  PCI: mvebu: Drop bogus comment above mvebu_pcie_map_registers()
  ...
 2018-08-16 09:21:54 -07:00
Linus Torvalds
f91e654474 Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 
Pull integrity updates from James Morris:
 "This adds support for EVM signatures based on larger digests, contains
  a new audit record AUDIT_INTEGRITY_POLICY_RULE to differentiate the
  IMA policy rules from the IMA-audit messages, addresses two deadlocks
  due to either loading or searching for crypto algorithms, and cleans
  up the audit messages"

* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  EVM: fix return value check in evm_write_xattrs()
  integrity: prevent deadlock during digsig verification.
  evm: Allow non-SHA1 digital signatures
  evm: Don't deadlock if a crypto algorithm is unavailable
  integrity: silence warning when CONFIG_SECURITYFS is not enabled
  ima: Differentiate auditing policy rules from "audit" actions
  ima: Do not audit if CONFIG_INTEGRITY_AUDIT is not set
  ima: Use audit_log_format() rather than audit_log_string()
  ima: Call audit_log_string() rather than logging it untrusted
 2018-08-15 22:54:12 -07:00
Linus Torvalds
c715ebeb03 Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 
Pull TPM updates from James Morris:

 - Migrate away from PM runtime as explicit cmdReady/goIdle transactions
   for every command is a spec requirement. PM runtime adds only a layer
   of complexity on our case.

 - tpm_tis drivers can now specify the hwrng quality.

 - TPM 2.0 code uses now tpm_buf for constructing messages. Jarkko
   thinks Tomas Winkler has done the same for TPM 1.2, and will start
   digging those changes from the patchwork in the near future.

 - Bug fixes and clean ups

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead
  ima: Use tpm_default_chip() and call TPM functions with a tpm_chip
  tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED
  tpm: Convert tpm_find_get_ops() to use tpm_default_chip()
  tpm: Implement tpm_default_chip() to find a TPM chip
  tpm: rename tpm_chip_find_get() to tpm_find_get_ops()
  tpm: Allow tpm_tis drivers to set hwrng quality.
  tpm: Return the actual size when receiving an unsupported command
  tpm: separate cmd_ready/go_idle from runtime_pm
  tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
  tpm_tis_spi: Pass the SPI IRQ down to the driver
  tpm: migrate tpm2_get_random() to use struct tpm_buf
  tpm: migrate tpm2_get_tpm_pt() to use struct tpm_buf
  tpm: migrate tpm2_probe() to use struct tpm_buf
  tpm: migrate tpm2_shutdown() to use struct tpm_buf
 2018-08-15 22:51:12 -07:00
Linus Torvalds
72f02ba66b Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi 
Pull SCSI updates from James Bottomley:
 "This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx,
  hisi_sas, smartpqi, megaraid_sas, arcmsr.

  In addition, with the continuing absence of Nic we have target updates
  for tcmu and target core (all with reviews and acks).

  The biggest observable change is going to be that we're (again) trying
  to switch to mulitqueue as the default (a user can still override the
  setting on the kernel command line).

  Other major core stuff is the removal of the remaining Microchannel
  drivers, an update of the internal timers and some reworks of
  completion and result handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (203 commits)
  scsi: core: use blk_mq_run_hw_queues in scsi_kick_queue
  scsi: ufs: remove unnecessary query(DM) UPIU trace
  scsi: qla2xxx: Fix issue reported by static checker for qla2x00_els_dcmd2_sp_done()
  scsi: aacraid: Spelling fix in comment
  scsi: mpt3sas: Fix calltrace observed while running IO & reset
  scsi: aic94xx: fix an error code in aic94xx_init()
  scsi: st: remove redundant pointer STbuffer
  scsi: qla2xxx: Update driver version to 10.00.00.08-k
  scsi: qla2xxx: Migrate NVME N2N handling into state machine
  scsi: qla2xxx: Save frame payload size from ICB
  scsi: qla2xxx: Fix stalled relogin
  scsi: qla2xxx: Fix race between switch cmd completion and timeout
  scsi: qla2xxx: Fix Management Server NPort handle reservation logic
  scsi: qla2xxx: Flush mailbox commands on chip reset
  scsi: qla2xxx: Fix unintended Logout
  scsi: qla2xxx: Fix session state stuck in Get Port DB
  scsi: qla2xxx: Fix redundant fc_rport registration
  scsi: qla2xxx: Silent erroneous message
  scsi: qla2xxx: Prevent sysfs access when chip is down
  scsi: qla2xxx: Add longer window for chip reset
  ...
 2018-08-15 22:06:26 -07:00
Linus Torvalds
db06f826ec Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux 
Pull clk updates from Stephen Boyd:
 "The new and exciting feature this time around is in the clk core.
  We've added duty cycle support to the clk API so that clk signal duty
  cycle ratios can be adjusted while taking into account things like clk
  dividers and clk tree hierarchy. So far only one SoC has implemented
  support for this, but I expect there will be more to come in the
  future.

  Outside of the core, we have the usual pile of clk driver updates and
  additions. The Amlogic meson driver got the most lines in the diffstat
  this time around because it added support for a whole bunch of
  hardware and duty cycle configuration. After that the Rockchip PX30,
  Qualcomm SDM845, and Renesas SoC drivers fill in a majority of the
  diff. We're left with the collection of non-critical fixes after that.
  Overall it looks pretty quiet this time.

  Core:
   - Clk duty cycle support
   - Proper CLK_SET_RATE_GATE support throughout the tree

  New Drivers:
   - Actions Semi Owl series S700 SoC clk driver
   - Qualcomm SDM845 display clock controller
   - i.MX6SX ocram_s clk support
   - Uniphier NAND, USB3 PHY, and SPI clk support
   - Qualcomm RPMh clk driver
   - i.MX7D mailbox clk support
   - Maxim 9485 Programmable Clock Generator
   - expose 32 kHz PLL on PXA SoCs
   - imx6sll GPIO clk gate support
   - Atmel at91 I2S audio clk support
   - SI544/SI514 clk on/off support
   - i.MX6UL GPIO clock gates in CCM CCGR
   - Renesas Crypto Engine clocks on R-Car H3
   - Renesas clk support for the new RZ/N1D SoC
   - Allwinner A64 display engine clock support
   - support for Rockchip's PX30 SoC
   - Amlogic Meson axg PCIe and audio clocks
   - Amlogic Meson GEN CLK on gxbb, gxl and axg

  Updates:
   - remove an unused variable from Exynos4412 ISP driver
   - fix a thinko bug in SCMI clk division logic
   - add missing of_node_put()s in some i.MX clk drivers
   - Tegra SDMMC clk jitter improvements with high speed signaling modes
   - SPDX tagging for qcom and cs2000-cp drivers
   - stop leaking con ids in __clk_put()
   - fix a corner case in fixed factor clk probing where node is in DT
     but parent clk is registered much later
   - Marvell Armada 3700 clk_pm_cpu_get_parent() had an invalid return
     value
   - i.MX clk init arrays removed in place of CLK_IS_CRITICAL
   - convert to CLK_IS_CRITICAL for i.MX51/53 driver
   - fix Tegra BPMP driver oops when xlating a NULL clk
   - proper default configuration for vic03 and vde clks on Tegra124
   - mark Tegra memory controller clks as critical
   - fix array bounds clamp in Tegra's emc determine_rate() op
   - Ingenic i2s bit update and allow UDC clk to gate
   - fix name of aspeed SDC clk define to have only one 'CLK'
   - fix i.MX6QDL video clk parent
   - critical clk markings for qcom SDM845
   - fix Stratix10 mpu_free_clk and sdmmc_free_clk parents
   - mark Rockchip's pclk_rkpwm_pmu as critical clock, due to it
     supplying the pwm used to drive the logic supply of the rk3399
     core"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (85 commits)
  clk: rockchip: Add pclk_rkpwm_pmu to PMU critical clocks in rk3399
  clk: cs2000-cp: convert to SPDX identifiers
  clk: scmi: Fix the rounding of clock rate
  clk: qcom: Add display clock controller driver for SDM845
  clk: mvebu: armada-37xx-periph: Remove unused var num_parents
  clk: samsung: Remove unused mout_user_aclk400_mcuisp_p4x12 variable
  clk: actions: Add S700 SoC clock support
  dt-bindings: clock: Add S700 support for Actions Semi Soc's
  clk: actions: Add missing REGMAP_MMIO dependency
  clk: uniphier: add clock frequency support for SPI
  clk: uniphier: add more USB3 PHY clocks
  clk: uniphier: add NAND 200MHz clock
  clk: tegra: make sdmmc2 and sdmmc4 as sdmmc clocks
  clk: tegra: Add sdmmc mux divider clock
  clk: tegra: Refactor fractional divider calculation
  clk: tegra: Fix includes required by fence_udelay()
  clk: imx6sll: fix missing of_node_put()
  clk: imx6ul: fix missing of_node_put()
  clk: imx: add ocram_s clock for i.mx6sx
  clk: mvebu: armada-37xx-periph: Fix wrong return value in get_parent
  ...
 2018-08-15 21:41:21 -07:00
Linus Torvalds
6de4c691ea Merge tag 'gpio-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio 
Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.19 kernel cycle.

  I don't know if anything in particular stands out. Maybe the Aspeed
  coprocessor thing from Benji: Aspeed is doing baseboard management
  chips (BMC's) for servers etc.

  These Aspeed's are ARM processors that exist inside (I guess) Intel
  servers, and they are moving forward to using mainline Linux in those.
  This is one of the pieces of the puzzle to achive that. They are doing
  OpenBMC, it's pretty cool: https://lwn.net/Articles/683320/

  Summary:

  Core changes:

   - Add a new API for explicitly naming GPIO consumers, when needed.

   - Don't let userspace set values on input lines. While we do not
     think anyone would do this crazy thing we better plug the hole
     before someone uses it and think it's a nifty feature.

   - Avoid calling chip->request() for unused GPIOs.

  New drivers/subdrivers:

   - The Mediatek MT7621 is supported which is a big win for OpenWRT and
     similar router distributions using this chip, as it seems every
     major router manufacturer on the planet has made products using
     this chip: https://wikidevi.com/wiki/MediaTek_MT7621

   - The Tegra 194 is now supported.

   - The IT87 driver now supports IT8786E and IT8718F super-IO chips.

   - Add support for Rockchip RK3328 in the syscon GPIO driver.

  Driver changes:

   - Handle the get/set_multiple() properly on MMIO chips with inverted
     direction registers. We didn't have this problem until a new chip
     appear that has get/set registers AND inverted direction bits, OK
     now we handle it.

   - A patch series making more error codes percolate upward properly
     for different errors on gpiochip_lock_as_irq().

   - Get/set multiple for the OMAP driver, accelerating these multiple
     line operations if possible.

   - A coprocessor interface for the Aspeed driver. Sometimes a few GPIO
     lines need to be grabbed by a co-processor for doing automated
     tasks, sometimes they are available as GPIO lines. By adding an
     explicit API in this driver we make it possible for the two line
     consumers to coexist. (This work was made available on the
     ib-aspeed branch, which may be appearing in other pull requests.)

   - Implemented .get_direction() and open drain in the SCH311x driver.

   - Continuing cleanup of included headers in GPIO drivers"

* tag 'gpio-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (80 commits)
  gpio: it87: Add support for IT8613
  gpio: it87: add support for IT8718F Super I/O.
  gpiolib: Avoid calling chip->request() for unused gpios
  gpio: tegra: Include the right header
  gpio: mmio: Fix up inverted direction registers
  gpio: xilinx: Use the right include
  gpio: timberdale: Include the right header
  gpio: tb10x: Use the right include
  gpiolib: Fix of_node inconsistency
  gpio: vr41xx: Bail out on gpiochip_lock_as_irq() error
  gpio: uniphier: Bail out on gpiochip_lock_as_irq() error
  gpio: xgene-sb: Don't shadow error code of gpiochip_lock_as_irq()
  gpio: em: Don't shadow error code of gpiochip_lock_as_irq()
  gpio: dwapb: Don't shadow error code of gpiochip_lock_as_irq()
  gpio: bcm-kona: Don't shadow error code of gpiochip_lock_as_irq()
  gpiolib: Don't shadow error code of gpiochip_lock_as_irq()
  gpio: syscon: rockchip: add GRF GPIO support for rk3328
  gpio: omap: Add get/set_multiple() callbacks
  gpio: pxa: remove set but not used variable 'gpio_offset'
  gpio-it87: add support for IT8786E Super I/O
  ...
 2018-08-15 21:35:38 -07:00
Linus Torvalds
99a2c789dd Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random 
Pull random updates from Ted Ts'o:
 "Some changes to trust cpu-based hwrng (such as RDRAND) for
  initializing hashed pointers and (optionally, controlled by a config
  option) to initialize the CRNG to avoid boot hangs"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: Make crng state queryable
  random: remove preempt disabled region
  random: add a config option to trust the CPU's hwrng
  vsprintf: Add command line option debug_boot_weak_hash
  vsprintf: Use hw RNG for ptr_key
  random: Return nbytes filled from hw RNG
  random: Fix whitespace pre random-bytes work
 2018-08-15 21:16:02 -07:00
Linus Torvalds
71f3a82fab Merge tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 
Pull media updates from Mauro Carvalho Chehab:

 - new Socionext MN88443x ISDB-S/T demodulator driver: mn88443x

 - new sensor drivers: ak7375, ov2680 and rj54n1cb0c

 - an old soc-camera sensor driver converted to the V4L2 framework:
   mt9v111

 - a new Voice-Coil Motor (VCM) driver: dw9807-vcm

 - some cleanups at cx25821, removing legacy unused code

 - some improvements at ddbridge driver

 - new platform driver: vicodec

 - some DVB API cleanups, removing ioctls and compat code for old
   out-of-tree drivers that were never merged upstream

 - improvements at DVB core to support frontents that support both
   Satellite and non-satellite delivery systems

 - got rid of the unused VIDIOC_RESERVED V4L2 ioctl

 - some cleanups/improvements at gl861 ISDB driver

 - several improvements on ov772x, ov7670 and ov5640, imx274, ov5645,
   and smiapp sensor drivers

 - fixes at em28xx to support dual TS devices

 - some cleanups at V4L2/VB2 locking logic

 - some API improvements at media controller

 - some cec core and drivers improvements

 - some uvcvideo improvements

 - some improvements at platform drivers: stm32-dcmi, rcar-vin, coda,
   reneseas-ceu, imx, vsp1, venus, camss

 - lots of other cleanups and fixes

* tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (406 commits)
  Revert "media: vivid: shut up warnings due to a non-trivial logic"
  siano: get rid of an unused return code for debugfs register
  media: isp: fix a warning about a wrong struct initializer
  media: radio-wl1273: fix return code for the polling routine
  media: s3c-camif: fix return code for the polling routine
  media: saa7164: fix return codes for the polling routine
  media: exynos-gsc: fix return code if mutex was interrupted
  media: mt9v111: Fix build error with no VIDEO_V4L2_SUBDEV_API
  media: xc4000: get rid of uneeded casts
  media: drxj: get rid of uneeded casts
  media: tuner-xc2028: don't use casts for printing sizes
  media: cleanup fall-through comments
  media: vivid: shut up warnings due to a non-trivial logic
  media: rtl28xxu: be sure that it won't go past the array size
  media: mt9v111: avoid going past the buffer
  media: vsp1_dl: add a description for cmdpool field
  media: sta2x11: add a missing parameter description
  media: v4l2-mem2mem: add descriptions to MC fields
  media: i2c: fix warning in Aptina MT9V111
  media: imx: shut up a false positive warning
  ...
 2018-08-15 18:29:14 -07:00
Linus Torvalds
54dbe75bbf Merge tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm 
Pull drm updates from Dave Airlie:
 "This is the main drm pull request for 4.19.

  Rob has some new hardware support for new qualcomm hw that I'll send
  along separately. This has the display part of it, the remaining pull
  is for the acceleration engine.

  This also contains a wound-wait/wait-die mutex rework, Peter has acked
  it for merging via my tree.

  Otherwise mostly the usual level of activity. Summary:

  core:
   - Wound-wait/wait-die mutex rework
   - Add writeback connector type
   - Add "content type" property for HDMI
   - Move GEM bo to drm_framebuffer
   - Initial gpu scheduler documentation
   - GPU scheduler fixes for dying processes
   - Console deferred fbcon takeover support
   - Displayport support for CEC tunneling over AUX

  panel:
   - otm8009a panel driver fixes
   - Innolux TV123WAM and G070Y2-L01 panel driver
   - Ilitek ILI9881c panel driver
   - Rocktech RK070ER9427 LCD
   - EDT ETM0700G0EDH6 and EDT ETM0700G0BDH6
   - DLC DLC0700YZG-1
   - BOE HV070WSA-100
   - newhaven, nhd-4.3-480272ef-atxl LCD
   - DataImage SCF0700C48GGU18
   - Sharp LQ035Q7DB03
   - p079zca: Refactor to support multiple panels

  tinydrm:
   - ILI9341 display panel

  New driver:
   - vkms - virtual kms driver to testing.

  i915:
   - Icelake:
        Display enablement
        DSI support
        IRQ support
        Powerwell support
   - GPU reset fixes and improvements
   - Full ppgtt support refactoring
   - PSR fixes and improvements
   - Execlist improvments
   - GuC related fixes

  amdgpu:
   - Initial amdgpu documentation
   - JPEG engine support on VCN
   - CIK uses powerplay by default
   - Move to using core PCIE functionality for gens/lanes
   - DC/Powerplay interface rework
   - Stutter mode support for RV
   - Vega12 Powerplay updates
   - GFXOFF fixes
   - GPUVM fault debugging
   - Vega12 GFXOFF
   - DC improvements
   - DC i2c/aux changes
   - UVD 7.2 fixes
   - Powerplay fixes for Polaris12, CZ/ST
   - command submission bo_list fixes

  amdkfd:
   - Raven support
   - Power management fixes

  udl:
   - Cleanups and fixes

  nouveau:
   - misc fixes and cleanups.

  msm:
   - DPU1 support display controller in sdm845
   - GPU coredump support.

  vmwgfx:
   - Atomic modesetting validation fixes
   - Support for multisample surfaces

  armada:
   - Atomic modesetting support completed.

  exynos:
   - IPPv2 fixes
   - Move g2d to component framework
   - Suspend/resume support cleanups
   - Driver cleanups

  imx:
   - CSI configuration improvements
   - Driver cleanups
   - Use atomic suspend/resume helpers
   - ipu-v3 V4L2 XRGB32/XBGR32 support

  pl111:
   - Add Nomadik LCDC variant

  v3d:
   - GPU scheduler jobs management

  sun4i:
   - R40 display engine support
   - TCON TOP driver

  mediatek:
   - MT2712 SoC support

  rockchip:
   - vop fixes

  omapdrm:
   - Workaround for DRA7 errata i932
   - Fix mm_list locking

  mali-dp:
   - Writeback implementation
        PM improvements
   - Internal error reporting debugfs

  tilcdc:
   - Single fix for deferred probing

  hdlcd:
   - Teardown fixes

  tda998x:
   - Converted to a bridge driver.

  etnaviv:
   - Misc fixes"

* tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm: (1506 commits)
  drm/amdgpu/sriov: give 8s for recover vram under RUNTIME
  drm/scheduler: fix param documentation
  drm/i2c: tda998x: correct PLL divider calculation
  drm/i2c: tda998x: get rid of private fill_modes function
  drm/i2c: tda998x: move mode_valid() to bridge
  drm/i2c: tda998x: register bridge outside of component helper
  drm/i2c: tda998x: cleanup from previous changes
  drm/i2c: tda998x: allocate tda998x_priv inside tda998x_create()
  drm/i2c: tda998x: convert to bridge driver
  drm/scheduler: fix timeout worker setup for out of order job completions
  drm/amd/display: display connected to dp-1 does not light up
  drm/amd/display: update clk for various HDMI color depths
  drm/amd/display: program display clock on cache match
  drm/amd/display: Add NULL check for enabling dp ss
  drm/amd/display: add vbios table check for enabling dp ss
  drm/amd/display: Don't share clk source between DP and HDMI
  drm/amd/display: Fix DP HBR2 Eye Diagram Pattern on Carrizo
  drm/amd/display: Use calculated disp_clk_khz value for dce110
  drm/amd/display: Implement custom degamma lut on dcn
  drm/amd/display: Destroy aux_engines only once
  ...
 2018-08-15 17:39:07 -07:00
Linus Torvalds
dafa5f6577 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 
Pull crypto updates from Herbert Xu:
 "API:
   - Fix dcache flushing crash in skcipher.
   - Add hash finup self-tests.
   - Reschedule during speed tests.

  Algorithms:
   - Remove insecure vmac and replace it with vmac64.
   - Add public key verification for DH/ECDH.

  Drivers:
   - Decrease priority of sha-mb on x86.
   - Improve NEON latency/throughput on ARM64.
   - Add md5/sha384/sha512/des/3des to inside-secure.
   - Support eip197d in inside-secure.
   - Only register algorithms supported by the host in virtio.
   - Add cts and remove incompatible cts1 from ccree.
   - Add hisilicon SEC security accelerator driver.
   - Replace msm hwrng driver with qcom pseudo rng driver.

  Misc:
   - Centralize CRC polynomials"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (121 commits)
  crypto: arm64/ghash-ce - implement 4-way aggregation
  crypto: arm64/ghash-ce - replace NEON yield check with block limit
  crypto: hisilicon - sec_send_request() can be static
  lib/mpi: remove redundant variable esign
  crypto: arm64/aes-ce-gcm - don't reload key schedule if avoidable
  crypto: arm64/aes-ce-gcm - implement 2-way aggregation
  crypto: arm64/aes-ce-gcm - operate on two input blocks at a time
  crypto: dh - make crypto_dh_encode_key() make robust
  crypto: dh - fix calculating encoded key size
  crypto: ccp - Check for NULL PSP pointer at module unload
  crypto: arm/chacha20 - always use vrev for 16-bit rotates
  crypto: ccree - allow bigger than sector XTS op
  crypto: ccree - zero all of request ctx before use
  crypto: ccree - remove cipher ivgen left overs
  crypto: ccree - drop useless type flag during reg
  crypto: ablkcipher - fix crash flushing dcache in error path
  crypto: blkcipher - fix crash flushing dcache in error path
  crypto: skcipher - fix crash flushing dcache in error path
  crypto: skcipher - remove unnecessary setting of walk->nbytes
  crypto: scatterwalk - remove scatterwalk_samebuf()
  ...
 2018-08-15 16:01:47 -07:00
Linus Torvalds
9a76aba02a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 
Pull networking updates from David Miller:
 "Highlights:

   - Gustavo A. R. Silva keeps working on the implicit switch fallthru
     changes.

   - Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
     Luca Coelho.

   - Re-enable ASPM in r8169, from Kai-Heng Feng.

   - Add virtual XFRM interfaces, which avoids all of the limitations of
     existing IPSEC tunnels. From Steffen Klassert.

   - Convert GRO over to use a hash table, so that when we have many
     flows active we don't traverse a long list during accumluation.

   - Many new self tests for routing, TC, tunnels, etc. Too many
     contributors to mention them all, but I'm really happy to keep
     seeing this stuff.

   - Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.

   - Lots of cleanups and fixes in L2TP code from Guillaume Nault.

   - Add IPSEC offload support to netdevsim, from Shannon Nelson.

   - Add support for slotting with non-uniform distribution to netem
     packet scheduler, from Yousuk Seung.

   - Add UDP GSO support to mlx5e, from Boris Pismenny.

   - Support offloading of Team LAG in NFP, from John Hurley.

   - Allow to configure TX queue selection based upon RX queue, from
     Amritha Nambiar.

   - Support ethtool ring size configuration in aquantia, from Anton
     Mikaev.

   - Support DSCP and flowlabel per-transport in SCTP, from Xin Long.

   - Support list based batching and stack traversal of SKBs, this is
     very exciting work. From Edward Cree.

   - Busyloop optimizations in vhost_net, from Toshiaki Makita.

   - Introduce the ETF qdisc, which allows time based transmissions. IGB
     can offload this in hardware. From Vinicius Costa Gomes.

   - Add parameter support to devlink, from Moshe Shemesh.

   - Several multiplication and division optimizations for BPF JIT in
     nfp driver, from Jiong Wang.

   - Lots of prepatory work to make more of the packet scheduler layer
     lockless, when possible, from Vlad Buslov.

   - Add ACK filter and NAT awareness to sch_cake packet scheduler, from
     Toke Høiland-Jørgensen.

   - Support regions and region snapshots in devlink, from Alex Vesker.

   - Allow to attach XDP programs to both HW and SW at the same time on
     a given device, with initial support in nfp. From Jakub Kicinski.

   - Add TLS RX offload and support in mlx5, from Ilya Lesokhin.

   - Use PHYLIB in r8169 driver, from Heiner Kallweit.

   - All sorts of changes to support Spectrum 2 in mlxsw driver, from
     Ido Schimmel.

   - PTP support in mv88e6xxx DSA driver, from Andrew Lunn.

   - Make TCP_USER_TIMEOUT socket option more accurate, from Jon
     Maxwell.

   - Support for templates in packet scheduler classifier, from Jiri
     Pirko.

   - IPV6 support in RDS, from Ka-Cheong Poon.

   - Native tproxy support in nf_tables, from Máté Eckl.

   - Maintain IP fragment queue in an rbtree, but optimize properly for
     in-order frags. From Peter Oskolkov.

   - Improvde handling of ACKs on hole repairs, from Yuchung Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
  bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
  hv/netvsc: Fix NULL dereference at single queue mode fallback
  net: filter: mark expected switch fall-through
  xen-netfront: fix warn message as irq device name has '/'
  cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
  net: dsa: mv88e6xxx: missing unlock on error path
  rds: fix building with IPV6=m
  inet/connection_sock: prefer _THIS_IP_ to current_text_addr
  net: dsa: mv88e6xxx: bitwise vs logical bug
  net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
  ieee802154: hwsim: using right kind of iteration
  net: hns3: Add vlan filter setting by ethtool command -K
  net: hns3: Set tx ring' tc info when netdev is up
  net: hns3: Remove tx ring BD len register in hns3_enet
  net: hns3: Fix desc num set to default when setting channel
  net: hns3: Fix for phy link issue when using marvell phy driver
  net: hns3: Fix for information of phydev lost problem when down/up
  net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
  net: hns3: Add support for serdes loopback selftest
  bnxt_en: take coredump_record structure off stack
  ...
 2018-08-15 15:04:25 -07:00
Bjorn Helgaas
0c38011aba Merge branch 'remotes/lorenzo/pci/dwc' 
- Add Kirin MSI support (Xiaowei Song)

  - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone,
    armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn Guo)

  - Move link notification settings from DesignWare core to individual
    drivers (Gustavo Pimentel)

  - Add endpoint library MSI-X interfaces (Gustavo Pimentel)

  - Correct signature of endpoint library IRQ interfaces (Gustavo Pimentel)

  - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel)

  - Add endpoint library MSI-X test support (Gustavo Pimentel)

* remotes/lorenzo/pci/dwc:
  PCI: endpoint: Add MSI set maximum restriction
  tools: PCI: Add MSI-X support
  pci_endpoint_test: Add 2 ioctl commands
  pci-epf-test/pci_endpoint_test: Add MSI-X support
  pci-epf-test/pci_endpoint_test: Use irq_type module parameter
  pci-epf-test/pci_endpoint_test: Cleanup PCI_ENDPOINT_TEST memspace
  PCI: dwc: Add legacy interrupt callback handler
  PCI: dwc: Rework MSI callbacks handler
  PCI: dwc: Add MSI-X callbacks handler
  PCI: Update xxx_pcie_ep_raise_irq() and pci_epc_raise_irq() signatures
  PCI: endpoint: Add MSI-X interfaces
  PCI: dwc: Fix EP link notification implementation
  PCI: spear13xx: Drop unnecessary root_bus_nr setting
  PCI: qcom: Drop unnecessary root_bus_nr setting
  PCI: histb: Drop unnecessary root_bus_nr setting
  PCI: designware-plat: Drop unnecessary root_bus_nr setting
  PCI: artpec6: Drop unnecessary root_bus_nr setting
  PCI: armada8k: Drop unnecessary root_bus_nr setting
  PCI: keystone: Drop unnecessary root_bus_nr setting
  PCI: imx6: Drop unnecessary root_bus_nr setting
  PCI: exynos: Drop unnecessary root_bus_nr setting
  PCI: kirin: Add MSI support
 2018-08-15 14:59:11 -05:00
Bjorn Helgaas
3a48dc6fc2 Merge branch 'pci/virtualization' 
- To avoid bus errors, enable PASID only if entire path supports End-End
    TLP prefixes (Sinan Kaya)

  - Unify slot and bus reset functions and remove hotplug knowledge from
    callers (Sinan Kaya)

  - Add Function-Level Reset quirks for Intel and Samsung NVMe devices to
    fix guest reboot issues (Alex Williamson)

  - Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD Controller
    (Bjorn Helgaas)

* pci/virtualization:
  PCI: Add function 1 DMA alias quirk for Marvell 88SS9183
  PCI: Delay after FLR of Intel DC P3700 NVMe
  PCI: Disable Samsung SM961/PM961 NVMe before FLR
  PCI: Export pcie_has_flr()
  PCI: Rename pci_try_reset_bus() to pci_reset_bus()
  PCI: Deprecate pci_reset_bus() and pci_reset_slot() functions
  PCI: Unify try slot and bus reset API
  PCI: Hide pci_reset_bridge_secondary_bus() from drivers
  IB/hfi1: Use pci_try_reset_bus() for initiating PCI Secondary Bus Reset
  PCI: Handle error return from pci_reset_bridge_secondary_bus()
  PCI/IOV: Tidy pci_sriov_set_totalvfs()
  PCI: Enable PASID only if entire path supports End-End TLP prefixes

# Conflicts:
#	drivers/pci/hotplug/pciehp_hpc.c
 2018-08-15 14:59:06 -05:00
Bjorn Helgaas
e7aaf90f9d Merge branch 'pci/switchtec' 
- Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer)

  - Expand documentation for pci_add_dma_alias() (Logan Gunthorpe)

* pci/switchtec:
  PCI: Expand documentation for pci_add_dma_alias()
  PCI: Add DMA alias quirk for Microsemi Switchtec NTB
  switchtec: Use generic PCI Vendor ID and Class Code

# Conflicts:
#	drivers/pci/quirks.c
 2018-08-15 14:59:03 -05:00
Bjorn Helgaas
5fc054a544 Merge branch 'pci/resource' 
- Clean up devm_of_pci_get_host_bridge_resources() resource allocation
    (Jan Kiszka)

  - Fixup resizable BARs after suspend/resume (Christian König)

  - Make "pci=earlydump" generic (Sinan Kaya)

  - Fix ROM BAR access routines to stay in bounds and check for signature
    correctly (Rex Zhu)

* pci/resource:
  PCI: Make pci_get_rom_size() static
  PCI: Add check code for last image indicator not set
  PCI: Avoid accessing memory outside the ROM BAR
  PCI: Make early dump functionality generic
  PCI: Cleanup PCI_REBAR_CTRL_BAR_SHIFT handling
  PCI: Restore resized BAR state on resume
  PCI: Clean up resource allocation in devm_of_pci_get_host_bridge_resources()

# Conflicts:
#	Documentation/admin-guide/kernel-parameters.txt
 2018-08-15 14:59:01 -05:00
Bjorn Helgaas
c689209be2 Merge branch 'pci/peer-to-peer' 
- Add "pci=disable_acs_redir=" parameter to disable ACS redirection for
    peer-to-peer DMA support (we don't have the peer-to-peer support yet;
    this is just one piece) (Logan Gunthorpe)

* pci/peer-to-peer:
  PCI: Add ACS Redirect disable quirk for Intel Sunrise Point
  PCI: Add device-specific ACS Redirect disable infrastructure
  PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE
  PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support
  PCI: Allow specifying devices using a base bus and path of devfns
  PCI: Make specifying PCI devices in kernel parameters reusable
  PCI: Hide ACS quirk declarations inside PCI core
 2018-08-15 14:58:58 -05:00
Bjorn Helgaas
a40f72db8a Merge branch 'pci/misc' 
- Mark fall-through switch cases before enabling -Wimplicit-fallthrough
    (Gustavo A. R. Silva)

  - Move DMA-debug PCI init from arch code to PCI core (Christoph Hellwig)

  - Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is supplied
    (Heiner Kallweit)

  - Unify PCI and DMA direction #defines (Shunyong Yang)

  - Add PCI_DEVICE_DATA() macro (Andy Shevchenko)

  - Check for VPD completion before checking for timeout (Bert Kenward)

  - Limit Netronome NFP5000 config space size to work around erratum (Jakub
    Kicinski)

* pci/misc:
  PCI: Limit config space size for Netronome NFP5000
  PCI/VPD: Check for VPD access completion before checking for timeout
  PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry
  PCI: Unify PCI and normal DMA direction definitions
  PCI: Use IRQF_ONESHOT if pci_request_irq() called with no handler
  PCI: Call dma_debug_add_bus() for pci_bus_type from PCI core
  PCI: Mark fall-through switch cases before enabling -Wimplicit-fallthrough

# Conflicts:
#	drivers/pci/hotplug/pciehp_ctrl.c
 2018-08-15 14:58:54 -05:00
Bjorn Helgaas
c0638a4553 Merge branch 'pci/hotplug' 
- Simplify SHPC existence/permission checks (Bjorn Helgaas)

  - Remove hotplug sample skeleton driver (Lukas Wunner)

  - Convert pciehp to threaded IRQ handling (Lukas Wunner)

  - Improve pciehp tolerance of missed events and initially unstable links
    (Lukas Wunner)

  - Clear spurious pciehp events on resume (Lukas Wunner)

  - Add pciehp runtime PM support, including for Thunderbolt controllers
    (Lukas Wunner)

  - Support interrupts from pciehp bridges in D3hot (Lukas Wunner)

* pci/hotplug:
  PCI: pciehp: Deduplicate presence check on probe & resume
  PCI: pciehp: Avoid implicit fallthroughs in switch statements
  PCI: Whitelist Thunderbolt ports for runtime D3
  PCI: Whitelist native hotplug ports for runtime D3
  PCI: sysfs: Resume to D0 on function reset
  PCI: pciehp: Resume parent to D0 on config space access
  PCI: pciehp: Resume to D0 on enable/disable
  PCI: pciehp: Support interrupts sent from D3hot
  PCI: pciehp: Obey compulsory command delay after resume
  PCI: pciehp: Clear spurious events earlier on resume
  PCI: portdrv: Deduplicate PM callback iterator
  PCI: pciehp: Avoid slot access during reset
  PCI: pciehp: Always enable occupied slot on probe
  PCI: pciehp: Become resilient to missed events
  PCI: pciehp: Tolerate initially unstable link
  PCI: pciehp: Declare pciehp_enable/disable_slot() static
  PCI: pciehp: Drop enable/disable lock
  PCI: pciehp: Enable/disable exclusively from IRQ thread
  PCI: pciehp: Track enable/disable status
  PCI: pciehp: Publish to user space last on probe
  PCI: hotplug: Demidlayer registration with the core
  PCI: pciehp: Drop slot workqueue
  PCI: pciehp: Handle events synchronously
  PCI: pciehp: Stop blinking on slot enable failure
  PCI: pciehp: Convert to threaded polling
  PCI: pciehp: Convert to threaded IRQ
  PCI: pciehp: Document struct slot and struct controller
  PCI: pciehp: Declare pciehp_unconfigure_device() void
  PCI: pciehp: Drop unnecessary NULL pointer check
  PCI: pciehp: Fix unprotected list iteration in IRQ handler
  PCI: pciehp: Fix use-after-free on unplug
  PCI: hotplug: Don't leak pci_slot on registration failure
  PCI: hotplug: Delete skeleton driver
  PCI: shpchp: Separate existence of SHPC and permission to use it
 2018-08-15 14:58:52 -05:00
Bjorn Helgaas
3c3ab37f4c Merge branch 'pci/aer' 
- Decode AER errors with names similar to "lspci" (Tyler Baicar)

  - Expose AER statistics in sysfs (Rajat Jain)

  - Clear AER status bits selectively based on the type of recovery (Oza
    Pawandeep)

  - Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru
    Gagniuc)

  - Don't clear AER status bits if we're using the "Firmware-First"
    strategy where firmware owns the registers (Alexandru Gagniuc)

* pci/aer:
  PCI/AER: Don't clear AER bits if error handling is Firmware-First
  PCI/AER: Remove duplicate PCI_EXP_AER_FLAGS definition
  PCI/portdrv: Remove pcie_portdrv_err_handler.slot_reset
  PCI/AER: Clear device status bits during ERR_COR handling
  PCI/AER: Clear device status bits during ERR_FATAL and ERR_NONFATAL
  PCI/AER: Remove ERR_FATAL code from ERR_NONFATAL path
  PCI/AER: Factor out ERR_NONFATAL status bit clearing
  PCI/AER: Clear only ERR_NONFATAL bits during non-fatal recovery
  PCI/AER: Clear only ERR_FATAL status bits during fatal recovery
  PCI/AER: Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST
  PCI/AER: Add sysfs attributes for rootport cumulative stats
  PCI/AER: Add sysfs attributes to provide AER stats and breakdown
  PCI/AER: Define aer_stats structure for AER capable devices
  PCI/AER: Move internal declarations to drivers/pci/pci.h
  PCI/AER: Adopt lspci names for AER error decoding
  PCI/AER: Expose internal API for obtaining AER information

# Conflicts:
#	drivers/pci/pci.h
 2018-08-15 14:58:45 -05:00