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kernel-fxtec-pro1x/tools/perf
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Arnaldo Carvalho de Melo caa470475d perf header: Fixup reading of HEADER_NRCPUS feature 
The original patch introducing this header wrote the number of CPUs available
and online in one order and then swapped those values when reading, fix it.

Before:

  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 4
  # echo 0 > /sys/devices/system/cpu/cpu2/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 3
  # echo 0 > /sys/devices/system/cpu/cpu1/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 2

After the fix, bringing back the CPUs online:

  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 2
  # nrcpus avail : 4
  # echo 1 > /sys/devices/system/cpu/cpu2/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 3
  # nrcpus avail : 4
  # echo 1 > /sys/devices/system/cpu/cpu1/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 4

Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: fbe96f29ce ("perf tools: Make perf.data more self-descriptive (v8)")
Link: http://lkml.kernel.org/r/20150911153323.GP23511@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-13 11:41:34 -03:00
..
arch perf tools: Fix link time error with sample_reg_masks on non x86 2015-09-01 13:04:41 -03:00
bench perf bench futex: Add lock_pi stresser 2015-07-20 17:49:51 -03:00
config perf tools: Support static linking with libdw 2015-08-13 14:49:11 -03:00
Documentation perf record: Add ability to name registers to record 2015-08-31 18:01:33 -03:00
python perf python: Make twatch.py use soft dummy event, freq=0 2015-07-29 10:51:45 -03:00
scripts perf scripts python: Add new compaction-times script 2015-08-28 14:53:40 -03:00
tests bpf tools: New API to get name from a BPF object 2015-08-31 16:53:15 -03:00
trace/strace/groups perf trace: Support 'strace' syscall event groups 2015-07-20 15:16:32 -03:00
ui perf tools: Rename perf_session_env to perf_env 2015-08-28 14:53:55 -03:00
util perf header: Fixup reading of HEADER_NRCPUS feature 2015-09-13 11:41:34 -03:00
.gitignore perf tools: Add Intel PT instruction decoder 2015-08-17 11:11:36 -03:00
Build perf trace: Support 'strace' syscall event groups 2015-07-20 15:16:32 -03:00
builtin-annotate.c perf annotate: Reset the dso find_symbol cache when removing symbols 2015-08-24 13:33:14 -03:00
builtin-bench.c perf bench futex: Add lock_pi stresser 2015-07-20 17:49:51 -03:00
builtin-buildid-cache.c perf buildid: Introduce sysfs/filename__sprintf_build_id 2015-08-28 14:53:50 -03:00
builtin-buildid-list.c perf buildid: Introduce sysfs/filename__sprintf_build_id 2015-08-28 14:53:50 -03:00
builtin-data.c
builtin-diff.c perf callchain: Allow disabling call graphs per event 2015-08-12 13:20:28 -03:00
builtin-evlist.c
builtin-help.c
builtin-inject.c perf tools: Add new PERF_RECORD_SWITCH event 2015-07-23 22:51:13 -03:00
builtin-kmem.c perf kmem: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-kvm.c perf kvm: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-list.c
builtin-lock.c perf machine: Protect the machine->threads with a rwlock 2015-05-08 16:19:27 -03:00
builtin-mem.c perf mem: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-probe.c perf probe: Delete an unnecessary check before the function call "strfilter__delete" 2015-07-06 08:58:36 -03:00
builtin-record.c perf record: Add ability to name registers to record 2015-08-31 18:01:33 -03:00
builtin-report.c perf report: Show call graph from reference events 2015-08-12 13:20:28 -03:00
builtin-sched.c perf sched: Add option to merge like comms to lat output 2015-05-27 12:21:45 -03:00
builtin-script.c perf tools: Fix use of wrong event when processing exit events 2015-09-02 17:46:26 -03:00
builtin-stat.c Merge branch 'perf/urgent' into perf/core, to pick up fixes 2015-08-31 10:25:26 +02:00
builtin-timechart.c perf tools: Elliminate alignment holes 2015-05-18 10:17:33 -03:00
builtin-top.c Merge branch 'perf/urgent' into perf/core, to pick up fixes before adding more changes 2015-08-20 11:48:56 +02:00
builtin-trace.c perf trace: Add header with copyright and background info 2015-08-28 14:53:48 -03:00
builtin.h
command-list.txt
CREDITS
design.txt
Makefile perf build: Fix single target build dependency check 2015-06-22 11:27:09 -03:00
Makefile.perf perf tools: Add Intel PT instruction decoder 2015-08-17 11:11:36 -03:00
MANIFEST perf tools: Remove export.h from MANIFEST 2015-08-26 10:34:57 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf tools: Move generic barriers out of perf-sys.h 2015-05-08 16:05:08 -03:00
perf-with-kcore.sh perf tools: Fix perf-with-kcore handling of arguments containing spaces 2015-08-06 16:48:27 -03:00
perf.c perf tools: Do not change lib/api/fs/debugfs directly 2015-08-28 14:53:53 -03:00
perf.h perf record: Add ability to name registers to record 2015-08-31 18:01:33 -03:00