Matt Fleming 961518259b rcu: Enable RCU tracepoints by default to aid in debugging ...

While debugging a performance issue I needed to understand why
RCU sofitrqs were firing so frequently.

Unfortunately, the RCU callback tracepoints are hidden behind
CONFIG_RCU_TRACE which defaults to off in the upstream kernel and is
likely to also be disabled in enterprise distribution configs.

Enable it by default for CONFIG_TREE_RCU. However, we must keep it
disabled for tiny RCU, because it would otherwise pull in a large
amount of code that would make tiny RCU less than tiny.

I ran some file system metadata intensive workloads (git checkout,
FS-Mark) on a variety of machines with this patch and saw no
detectable change in performance.

Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

2017-01-23 11:37:13 -08:00

..

842

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2016-03-17 21:38:27 -07:00

fonts

fonts: Add 6x10 font

2014-10-09 11:35:48 +03:00

lz4

lib: lz4: cleanup unaligned access efficiency detection

2016-04-13 09:22:49 -07:00

lzo

lzo: check for length overrun in variable length encoding.

2014-09-28 11:08:01 +02:00

mpi

mpi: Fix NULL ptr dereference in mpi_powm() [ver #3]

2016-11-25 12:57:50 +11:00

raid6

lib/raid6: Add AVX2 optimized xor_syndrome functions

2016-11-07 15:08:20 -08:00

reed_solomon

…

xz

lib/xz: enable all filters by default in Kconfig

2014-06-04 16:54:18 -07:00

zlib_deflate

zlib_deflate/deftree: remove bi_reverse()

2015-09-10 13:29:01 -07:00

zlib_inflate

zlib: clean up some dead code

2014-08-06 18:01:24 -07:00

.gitignore

X.509: Implement simple static OID registry

2012-10-08 13:50:18 +10:30

argv_split.c

argv_split(): teach it to handle mutable strings

2013-04-29 18:28:19 -07:00

asn1_decoder.c

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2016-05-17 09:33:39 -07:00

assoc_array.c

assoc_array: don't call compare_object() on a node

2016-04-06 14:06:48 +01:00

atomic64_test.c

atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE

2016-10-07 18:46:30 -07:00

atomic64.c

locking/atomic: Implement atomic{,64,_long}_fetch_{add,sub,and,andnot,or,xor}{,_relaxed,_acquire,_release}()

2016-06-16 10:48:32 +02:00

audit.c

syscalls: implement execveat() system call

2014-12-13 12:42:51 -08:00

bcd.c

usb/core: use bin2bcd() for bcdDevice in RH

2012-09-10 11:13:16 -07:00

bch.c

…

bitmap.c

lib/bitmap.c: enhance bitmap syntax

2016-10-11 15:06:30 -07:00

bitrev.c

ARM: 8187/1: add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction

2014-12-22 16:43:06 +00:00

bsearch.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

btree.c

treewide: Remove old email address

2015-11-23 09:44:58 +01:00

bug.c

lib/bug.c: use common WARN helper

2016-03-17 15:09:34 -07:00

build_OID_registry

X.509: do not emit any informational output

2013-06-19 17:54:06 +02:00

bust_spinlocks.c

printk: Provide a wake_up_klogd() off-case

2013-03-22 16:41:20 -07:00

chacha20.c

random: replace non-blocking pool with a Chacha20-based CRNG

2016-07-03 00:57:23 -04:00

check_signature.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

checksum.c

ipv4: Update parameters for csum_tcpudp_magic to their original types

2016-03-13 23:55:13 -04:00

clz_ctz.c

lib/clz_ctz.c: add prototype declarations in lib/clz_ctz.c

2014-04-03 16:21:12 -07:00

clz_tab.c

lib: Fix multiple definitions of clz_tab

2012-02-02 10:34:23 +11:00

cmdline.c

lib: Add a generic cmdline parse function parse_option_str

2014-10-03 18:40:58 +01:00

compat_audit.c

audit: Add generic compat syscall support

2014-03-20 10:11:35 -04:00

cordic.c

…

cpu_rmap.c

sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()

2015-05-27 15:22:15 +02:00

cpumask.c

cpumask: Export cpumask_any_but()

2016-02-29 09:35:20 +01:00

crc7.c

lib/crc7: Shift crc7() output left 1 bit

2014-05-16 14:26:52 -04:00

crc8.c

…

crc16.c

…

crc32.c

crc32: use ktime_get_ns() for measurement

2016-08-02 19:35:08 -04:00

crc32defs.h

crc32: select an algorithm via Kconfig

2012-03-23 16:58:38 -07:00

crc-ccitt.c

…

crc-itu-t.c

lib: crc-itu-t.[ch] fix 0x0x prefix in integer constants

2015-05-26 15:26:43 +02:00

crc-t10dif.c

lib: introduce crc_t10dif_update()

2015-05-30 22:42:24 -07:00

ctype.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

debug_info.c

kbuild: include core debug info when DEBUG_INFO_REDUCED

2015-06-11 15:08:32 +02:00

debug_locks.c

mutex: Add support for wound/wait style locks

2013-06-26 12:10:56 +02:00

debugobjects.c

Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2016-12-13 12:59:57 -08:00

dec_and_lock.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

decompress_bunzip2.c

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-10 13:29:01 -07:00

decompress_inflate.c

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-10 13:29:01 -07:00

decompress_unlz4.c

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-10 13:29:01 -07:00

decompress_unlzma.c

lib/decompress_unlzma: Do a NULL check for pointer

2015-09-10 13:29:01 -07:00

decompress_unlzo.c

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-10 13:29:01 -07:00

decompress_unxz.c

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-10 13:29:01 -07:00

decompress.c

lib/decompress: set the compressor name to NULL on error

2015-07-17 16:39:54 -07:00

devres.c

devres: use to_pci_dev()

2016-02-07 23:17:59 -08:00

digsig.c

lib/digsig: digsig_verify_rsa(): return -EINVAL if modulo length is zero

2016-05-31 16:42:00 +08:00

div64.c

__div64_32(): make it overridable at compile time

2015-11-16 14:42:12 -05:00

dma-debug.c

Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma

2016-10-06 17:13:54 -07:00

dma-noop.c

dma-mapping: use unsigned long for dma_attrs

2016-08-04 08:50:07 -04:00

dump_stack.c

dump_stack: avoid potential deadlocks

2016-02-05 18:10:40 -08:00

dynamic_debug.c

dynamic_debug: add jump label support

2016-08-04 08:50:07 -04:00

dynamic_queue_limits.c

lib/dynamic_queue_limits.c: simplify includes

2015-02-12 18:54:15 -08:00

earlycpio.c

lib/cpio: Make find_cpio_data()'s offset arg optional

2016-06-08 11:04:19 +02:00

extable.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

fault-inject.c

fault-inject: fix inverted interval/probability values in printk

2015-10-23 17:55:10 +09:00

fdt_empty_tree.c

lib: add fdt_empty_tree.c

2014-04-30 19:49:37 +01:00

fdt_ro.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_rw.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_strerror.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_sw.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt_wip.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

fdt.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

2012-07-23 13:54:52 +01:00

find_bit.c

lib: rename lib/find_next_bit.c to lib/find_bit.c

2015-04-17 09:03:54 -04:00

flex_array.c

reciprocal_divide: update/correction of the algorithm

2014-01-21 23:17:20 -08:00

flex_proportions.c

lib+mm: fix few spelling mistakes

2016-02-15 11:18:23 +01:00

gcd.c

lib/GCD.c: use binary GCD algorithm instead of Euclidean

2016-05-20 17:58:30 -07:00

gen_crc32table.c

lib: crc32: constify crc32 lookup table

2015-02-13 21:21:35 -08:00

genalloc.c

lib/genalloc.c: start search from start of chunk

2016-10-27 18:43:43 -07:00

glob.c

lib/glob.c: add CONFIG_GLOB_SELFTEST

2014-08-06 18:01:25 -07:00

halfmd4.c

lib/halfmd4.c: use rol32 inline function in the ROUND macro

2015-11-06 17:50:42 -08:00

hexdump.c

lib/hexdump.c: truncate output in case of overflow

2015-11-06 17:50:42 -08:00

hweight.c

x86/hweight: Get rid of the special calling convention

2016-06-08 15:01:02 +02:00

idr.c

lib/ida: document locking requirements a bit better

2016-12-12 18:55:09 -08:00

inflate.c

…

int_sqrt.c

lib/int_sqrt.c: optimize square root algorithm

2013-04-29 18:28:19 -07:00

interval_tree_test.c

lib: Export interval_tree

2014-05-05 09:09:14 +02:00

interval_tree.c

lib/interval_tree.c: simplify includes

2015-02-12 18:54:15 -08:00

iomap_copy.c

lib/iomap_copy.c: add __ioread32_copy()

2016-01-20 17:09:18 -08:00

iomap.c

Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP

2014-04-07 16:36:11 -07:00

iommu-common.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

2015-11-05 16:34:48 -08:00

iommu-helper.c

lib/iommu-helper: skip to next segment

2016-08-02 19:35:07 -04:00

ioremap.c

x86, mm: support huge KVA mappings on x86

2015-04-14 16:49:04 -07:00

iov_iter.c

[iov_iter] fix iterate_all_kinds() on empty iterators

2016-12-22 23:00:22 -05:00

irq_poll.c

Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2016-10-15 10:03:15 -07:00

irq_regs.c

lib: reduce the use of module.h wherever possible

2012-03-07 15:04:04 -05:00

is_single_threaded.c

lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread()

2015-11-06 17:50:42 -08:00

jedec_ddr_data.c

ddr: add LPDDR2 data from JESD209-2

2012-05-02 00:04:06 -07:00

kasprintf.c

lib/kasprintf.c: add sanity check to kvasprintf

2016-01-16 11:17:27 -08:00

Kconfig

Merge branch 'akpm' (patches from Andrew)

2016-10-07 21:38:00 -07:00

Kconfig.debug

rcu: Enable RCU tracepoints by default to aid in debugging

2017-01-23 11:37:13 -08:00

Kconfig.kasan

mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB

2016-07-28 16:07:41 -07:00

Kconfig.kgdb

kgdb: depends on VT

2016-05-23 17:04:14 -07:00

Kconfig.kmemcheck

…

Kconfig.ubsan

Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation

2016-12-14 16:04:08 -08:00

kfifo.c

kfifo: use BUG_ON

2014-08-08 15:57:25 -07:00

klist.c

klist: fix starting point removed bug in klist iterators

2016-02-07 22:18:47 -08:00

kobject_uevent.c

kobject: improve function-level documentation

2016-10-28 02:42:10 -04:00

kobject.c

kobject: export kset_find_obj() for module use

2016-02-09 17:36:34 -08:00

kstrtox.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

kstrtox.h

…

lcm.c

block: fix blk_stack_limits() regression due to lcm() change

2015-03-31 09:45:50 -06:00

libcrc32c.c

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2016-01-22 11:58:43 -08:00

list_debug.c

bug: Provide toggle for BUG on data corruption

2016-10-31 13:01:58 -07:00

list_sort.c

lib/list_sort: use late_initcall to hook in self tests

2015-06-16 14:12:35 -04:00

llist.c

lib/llist.c: fix data race in llist_del_first

2015-11-06 17:50:42 -08:00

locking-selftest-hardirq.h

…

locking-selftest-mutex.h

…

locking-selftest-rlock-hardirq.h

…

locking-selftest-rlock-softirq.h

…

locking-selftest-rlock.h

…

locking-selftest-rsem.h

…

locking-selftest-softirq.h

…

locking-selftest-spin-hardirq.h

…

locking-selftest-spin-softirq.h

…

locking-selftest-spin.h

…

locking-selftest-wlock-hardirq.h

…

locking-selftest-wlock-softirq.h

…

locking-selftest-wlock.h

…

locking-selftest-wsem.h

…

locking-selftest.c

locking/selftest: Fix output since KERN_CONT changes

2016-11-25 07:12:19 +01:00

lockref.c

locking/core: Remove cpu_relax_lowlatency() users

2016-11-16 10:15:10 +01:00

lru_cache.c

lru_cache: Converted lc_seq_printf_status to return void

2015-11-25 09:22:02 -07:00

Makefile

cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions

2016-12-25 10:47:43 +01:00

md5.c

lib/md5.c: simplify include

2015-02-12 18:54:15 -08:00

memory-notifier-error-inject.c

memory: memory notifier error injection module

2012-07-30 17:25:22 -07:00

memweight.c

string: introduce memweight()

2012-07-30 17:25:16 -07:00

net_utils.c

mac_pton: Use bool not int return

2014-06-25 17:45:43 -07:00

netdev-notifier-error-inject.c

net: Add support for CHANGEUPPER notifier error injection

2015-12-03 11:49:23 -05:00

nlattr.c

netlink: smaller nla_attr_minlen table

2016-11-19 22:11:25 -05:00

nmi_backtrace.c

nmi_backtrace: generate one-line reports for idle cpus

2016-10-07 18:46:30 -07:00

nodemask.c

include/linux/nodemask.h: create next_node_in() helper

2016-05-19 19:12:14 -07:00

notifier-error-inject.c

mode_t, whack-a-mole at 11...

2013-04-09 14:13:05 -04:00

notifier-error-inject.h

fault-injection: notifier error injection

2012-07-30 17:25:22 -07:00

of-reconfig-notifier-error-inject.c

powerpc+of: Rename and fix OF reconfig notifier error inject module

2012-12-14 10:32:52 +11:00

oid_registry.c

Give the OID registry file module info to avoid kernel tainting

2013-05-05 14:38:00 -07:00

once.c

once: make helper generic for calling functions once

2015-10-08 05:26:36 -07:00

parser.c

parser: add u64 number parser

2016-12-06 10:17:03 +02:00

pci_iomap.c

Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2015-09-08 14:35:59 -07:00

percpu_counter.c

lib/percpu_counter: Convert to hotplug state machine

2016-11-09 23:45:26 +01:00

percpu_ida.c

mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

2015-11-06 17:50:42 -08:00

percpu_test.c

percpu: add test module for various percpu operations

2013-11-13 12:09:11 +09:00

percpu-refcount.c

percpu-refcount: init ->confirm_switch member properly

2016-08-11 13:52:23 -04:00

plist.c

lib/plist.c: remove redundant include

2015-02-12 18:54:16 -08:00

pm-notifier-error-inject.c

PM: PM notifier error injection module

2012-07-30 17:25:22 -07:00

radix-tree.c

mm: workingset: fix use-after-free in shadow node shrinker

2017-01-07 18:22:40 -08:00

random32.c

Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2016-10-15 10:03:15 -07:00

ratelimit.c

ratelimit: extend to print suppressed messages on release

2016-08-02 19:35:06 -04:00

rational.c

lib: Change mail address of Oskar Schirmer

2012-05-17 15:18:37 +02:00

rbtree_test.c

rbtree/test: test rbtree_postorder_for_each_entry_safe()

2014-01-23 16:37:03 -08:00

rbtree.c

lib/rbtree.c: fix typo in comment of ____rb_erase_color

2016-12-12 18:55:09 -08:00

reciprocal_div.c

reciprocal_divide: update/correction of the algorithm

2014-01-21 23:17:20 -08:00

rhashtable.c

rhashtable: Add rhlist interface

2016-09-20 04:43:36 -04:00

sbitmap.c

sbitmap: initialize weight to zero

2016-09-19 08:19:40 -06:00

scatterlist.c

scatterlist: fix a typo in comment block of sg_miter_stop()

2016-02-08 10:15:17 -08:00

seq_buf.c

tracing: Use seq_buf_used() in seq_buf_to_user() instead of len

2015-12-23 14:27:20 -05:00

sg_pool.c

lib: scatterlist: move SG pool code from SCSI driver to lib/sg_pool.c

2016-04-15 16:53:14 -04:00

sg_split.c

lib: scatterlist: add sg splitting function

2015-08-24 14:28:01 -06:00

sha1.c

lib: EXPORT_SYMBOL sha_init

2015-03-23 22:12:08 -04:00

show_mem.c

lib/show_mem.c: correct reserved memory calculation

2015-09-08 15:35:28 -07:00

smp_processor_id.c

percpu: add preemption checks to __this_cpu ops

2014-04-07 16:36:14 -07:00

sort.c

lib/sort: Add 64 bit swap function

2015-06-25 17:00:40 -07:00

stackdepot.c

lib/stackdepot: export save/fetch stack for drivers

2016-11-11 08:12:37 -08:00

stmp_device.c

lib/stmp_device.c: replace module.h include

2015-02-12 18:54:16 -08:00

string_helpers.c

string_helpers: add kstrdup_quotable_file

2016-04-21 10:47:26 +10:00

string.c

lib: move strtobool() to kstrtobool()

2016-03-17 15:09:34 -07:00

strncpy_from_user.c

lib: harden strncpy_from_user

2016-10-11 15:06:30 -07:00

strnlen_user.c

unsafe_[get|put]_user: change interface to use a error target label

2016-08-08 13:02:01 -07:00

swiotlb.c

swiotlb: Export swiotlb_max_segment to users

2017-01-06 13:00:01 -05:00

syscall.c

lib/syscall: Pin the task stack in collect_syscall()

2016-09-16 09:18:53 +02:00

test_bitmap.c

test_bitmap: unit tests for lib/bitmap.c

2016-02-19 22:54:09 -05:00

test_bpf.c

bpf, test: fix ld_abs + vlan push/pop stress test

2016-10-20 14:39:06 -04:00

test_firmware.c

test: firmware_class: add asynchronous request trigger

2016-01-07 13:44:22 -07:00

test_hash.c

lib/test_hash.c: fix warning in preprocessor symbol evaluation

2016-09-01 17:52:01 -07:00

test_hexdump.c

test_hexdump: print statistics at the end

2016-01-20 17:09:18 -08:00

test_kasan.c

kasan: support use-after-scope detection

2016-11-30 16:32:52 -08:00

test_module.c

test: add minimal module for verification testing

2014-01-23 16:36:57 -08:00

test_printf.c

mm, printk: introduce new format string for flags

2016-03-15 16:55:16 -07:00

test_rhashtable.c

rhashtable-test: Fix max_size parameter description

2016-08-08 12:52:42 -07:00

test_static_key_base.c

locking/static_keys: Provide a selftest

2015-08-03 11:51:12 +02:00

test_static_keys.c

locking/static_keys: Avoid nested functions

2016-02-09 10:27:29 +01:00

test_user_copy.c

test: check copy_to/from_user boundary validation

2014-01-23 16:36:57 -08:00

test_uuid.c

lib/uuid: add a test module

2016-05-30 15:26:57 -07:00

test-kstrtox.c

kstrto*: accept "-0" for signed conversion

2015-09-10 13:29:01 -07:00

test-string_helpers.c

lib/test-string_helpers.c: fix and improve string_get_size() tests

2016-02-03 08:28:43 -08:00

textsearch.c

lib/textsearch.c: remove textsearch_put reference from comments

2014-10-14 02:18:14 +02:00

timerqueue.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

ts_bm.c

…

ts_fsm.c

…

ts_kmp.c

…

ubsan.c

UBSAN: fix typo in format string

2016-08-02 17:31:41 -04:00

ubsan.h

UBSAN: run-time undefined behavior sanity checker

2016-01-20 17:09:18 -08:00

ucs2_string.c

lib/ucs2_string: Speed up ucs2_utf8size()

2016-09-09 16:08:46 +01:00

uuid.c

lib/uuid.c: use correct offset in uuid parser

2016-05-30 15:26:57 -07:00

vsprintf.c

lib/uuid.c: introduce a few more generic helpers

2016-05-20 17:58:30 -07:00

win_minmax.c

lib/win_minmax: windowed min or max estimator

2016-09-21 00:22:59 -04:00