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06280e3b15
Add option --data-page-size in "perf mem" to record/report data page
size.
Here are some examples:
# perf mem --phys-data --data-page-size report -D
# PID, TID, IP, ADDR, PHYS ADDR, DATA PAGE SIZE, LOCAL WEIGHT, DSRC, SYMBOL
20134 20134 0xffffffffb5bd2fd0 0x016ffff9a274e96a308 0x000000044e96a308 4K 1168 0x5080144 /lib/modules/4.18.0-rc7+/build/vmlinux:perf_ctx_unlock
20134 20134 0xffffffffb63f645c 0xffffffffb752b814 0xcfb52b814 2M 225 0x26a100142 /lib/modules/4.18.0-rc7+/build/vmlinux:_raw_spin_lock
20134 20134 0xffffffffb660300c 0xfffffe00016b8bb0 0x0 4K 0 0x5080144 /lib/modules/4.18.0-rc7+/build/vmlinux:__x86_indirect_thunk_rax
#
# perf mem --phys-data --data-page-size report --stdio
# To display the perf.data header info, please use
# --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 5K of event 'cpu/mem-loads,ldlat=30/P'
# Total weight : 281234
# Sort order :
# mem,sym,dso,symbol_daddr,dso_daddr,tlb,locked,phys_daddr,data_page_size
#
# Overhead Samples Memory access Symbol Shared Object Data Symbol Data Object TLB access Locked Data Physical Address Data Page Size
# ........ ....... ............. ............................ ................ ...................... ........... ............ ...... ...................... ..............
28.54% 1826 L1 or L1 hit [k] __x86_indirect_thunk_rax [kernel.vmlinux] [k] 0xffffb0df31b0ff28 [unknown] L1 or L2 hit No [k] 0x0000000000000000 4K
6.02% 256 L1 or L1 hit [.] touch_buffer dtlb [.] 0x00007ffd50109da8 [stack] L1 or L2 hit No [.] 0x000000042454ada8 4K
3.23% 5 L1 or L1 hit [k] clear_huge_page [kernel.vmlinux] [k] 0xffff9a2753b8ce60 [unknown] L1 or L2 hit No [k] 0x0000000453b8ce60 2M
2.98% 4 L1 or L1 hit [k] clear_page_erms [kernel.vmlinux] [k] 0xffffb0df31b0fd00 [unknown] L1 or L2 hit No [k] 0x0000000000000000 4K
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Stephane Eranian <eranian@google.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210105195752.43489-3-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.