kernel_optimize_test/tools/perf
Yunlong Song e366a6d894 perf trace: Support using -f to override perf.data file ownership
Enable perf trace to use perf.data when it is not owned by current user
or root.

Example:

 # perf trace record ls
 # chown Yunlong.Song:Yunlong.Song perf.data
 # ls -al perf.data
 -rw------- 1 Yunlong.Song Yunlong.Song 4153101 Apr  2 15:28 perf.data
 # id
 uid=0(root) gid=0(root) groups=0(root),64(pkcs11)

Before this patch:

 # perf trace -i perf.data
 File perf.data not owned by current user or root (use -f to override)
 # perf trace -i perf.data -f
   Error: unknown switch `f'

  usage: perf trace [<options>] [<command>]
     or: perf trace [<options>] -- <command> [<options>]
     or: perf trace record [<options>] [<command>]
     or: perf trace record [<options>] -- <command> [<options>]

         --event <event>   event selector. use 'perf list' to list
 						  available events
         --comm            show the thread COMM next to its id
         --tool_stats      show tool stats
     -e, --expr <expr>     list of events to trace
     -o, --output <file>   output file name
     -i, --input <file>    Analyze events in file
     -p, --pid <pid>       trace events on existing process id
     -t, --tid <tid>       trace events on existing thread id
         --filter-pids <float>
  ...

As shown above, the -f option does not work at all.

After this patch:

 # perf trace -i perf.data
 File perf.data not owned by current user or root (use -f to override)
 # perf trace -i perf.data -f
 0.056 ( 0.002 ms): ls/47325 brk(                                 ...
 0.108 ( 0.018 ms): ls/47325 mmap(len: 4096, prot: READ|WRITE,    ...
 0.145 ( 0.013 ms): ls/47325 access(filename: 0x7f31259a0eb0,     ...
 0.172 ( 0.008 ms): ls/47325 open(filename: 0x7fffeb9a0d00,       ...
 0.180 ( 0.004 ms): ls/47325 stat(filename: 0x7fffeb9a0d00,       ...
 0.185 ( 0.004 ms): ls/47325 open(filename: 0x7fffeb9a0d00,       ...
 0.189 ( 0.003 ms): ls/47325 stat(filename: 0x7fffeb9a0d00,       ...
 0.195 ( 0.004 ms): ls/47325 open(filename: 0x7fffeb9a0d00,       ...
 0.199 ( 0.002 ms): ls/47325 stat(filename: 0x7fffeb9a0d00,       ...
 0.205 ( 0.004 ms): ls/47325 open(filename: 0x7fffeb9a0d00,       ...
 0.211 ( 0.004 ms): ls/47325 stat(filename: 0x7fffeb9a0d00,       ...
 0.220 ( 0.007 ms): ls/47325 open(filename: 0x7f312599e8ff,       ...
 ...
 ...

As shown above, the -f option really works now.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1427982439-27388-10-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-02 13:18:51 -03:00
..
arch perf build: Add arch sparc objects building 2015-02-12 13:22:01 -03:00
bench Merge 'tip/perf/urgent' into perf/core to pick fixes 2015-03-02 11:45:49 -03:00
config perf build: Disable libbabeltrace check by default 2015-03-30 10:24:27 -03:00
Documentation perf tools: Add pid/tid filtering to report and script commands 2015-03-24 13:02:46 -03:00
python
scripts perf build: Add scripts objects building 2015-02-12 11:49:53 -03:00
tests perf tools: Add kmod_path__parse function 2015-03-21 14:53:41 -03:00
ui perf hists browser: Indicate which callchain entries are annotated 2015-03-21 14:53:37 -03:00
util perf kvm: Support using -f to override perf.data.guest file ownership 2015-04-02 13:18:47 -03:00
.gitignore perf build: Use FEATURE-DUMP instead of PERF-FEATURES in the .gitignore file 2015-03-20 17:49:51 -03:00
Build perf tools: Add new 'perf data' command 2015-02-25 12:42:25 -03:00
builtin-annotate.c perf ordered_events: Shorten function signatures 2015-03-11 10:17:09 -03:00
builtin-bench.c perf bench: Add --repeat option 2014-06-19 16:13:15 -03:00
builtin-buildid-cache.c perf buildid-cache: Show usage with incorrect params 2015-02-27 15:52:40 -03:00
builtin-buildid-list.c perf ordered_events: Shorten function signatures 2015-03-11 10:17:09 -03:00
builtin-data.c perf tools: Add the bash completion for listing subsubcommands of perf data 2015-03-19 13:49:38 -03:00
builtin-diff.c perf diff: Add kallsyms option 2015-03-24 13:01:54 -03:00
builtin-evlist.c perf evlist: Support using -f to override perf.data file ownership 2015-04-02 13:18:45 -03:00
builtin-help.c perf tools: Add the bash completion for listing subsubcommands of perf help 2015-03-19 13:49:39 -03:00
builtin-inject.c perf inject: Support using -f to override perf.data file ownership 2015-04-02 13:18:45 -03:00
builtin-kmem.c perf kmem: Support using -f to override perf.data file ownership 2015-04-02 13:18:46 -03:00
builtin-kvm.c perf kvm: Support using -f to override perf.data.guest file ownership 2015-04-02 13:18:47 -03:00
builtin-list.c perf list: Extend raw-dump to certain kind of events 2015-02-27 15:52:24 -03:00
builtin-lock.c perf lock: Support using -f to override perf.data file ownership 2015-04-02 13:18:48 -03:00
builtin-mem.c perf mem: Support using -f to override perf.data file ownership 2015-04-02 13:18:49 -03:00
builtin-probe.c perf probe: Add --quiet option to suppress output result message 2014-10-29 10:32:49 -02:00
builtin-record.c perf evlist: Return the first evsel with an invalid filter in apply_filters() 2015-03-26 10:52:28 -03:00
builtin-report.c perf tools: Add pid/tid filtering to report and script commands 2015-03-24 13:02:46 -03:00
builtin-sched.c perf ordered_events: Shorten function signatures 2015-03-11 10:17:09 -03:00
builtin-script.c perf script: Support using -f to override perf.data file ownership 2015-04-02 13:18:50 -03:00
builtin-stat.c perf evlist: Return the first evsel with an invalid filter in apply_filters() 2015-03-26 10:52:28 -03:00
builtin-timechart.c perf timechart: Support using -f to override perf.data file ownership 2015-04-02 13:18:50 -03:00
builtin-top.c perf symbols: Save DSO loading errno to better report errors 2015-03-24 12:08:43 -03:00
builtin-trace.c perf trace: Support using -f to override perf.data file ownership 2015-04-02 13:18:51 -03:00
builtin.h perf tools: Add new 'perf data' command 2015-02-25 12:42:25 -03:00
command-list.txt perf tools: Add new 'perf data' command 2015-02-25 12:42:25 -03:00
CREDITS
design.txt
Makefile perf tools: Set JOBS based on CPU or processor 2015-03-26 10:52:28 -03:00
Makefile.perf perf build: Disable libbabeltrace check by default 2015-03-30 10:24:27 -03:00
MANIFEST tools build: Add new build support 2015-02-11 18:30:03 -03:00
perf-archive.sh
perf-completion.sh perf tools: Avoid confusion with preloaded bash function for perf bash completion 2015-03-19 13:53:27 -03:00
perf-read-vdso.c perf tools: Build programs to copy 32-bit compatibility 2014-10-29 10:32:48 -02:00
perf-sys.h perf tools: Avoid build splat for syscall numbers with uclibc 2015-01-16 17:49:29 -03:00
perf-with-kcore.sh perf tools: Add perf-with-kcore script 2014-09-17 17:08:08 -03:00
perf.c perf tools: Fix the bash completion problem of 'perf --*' 2015-02-27 15:52:28 -03:00
perf.h perf: Bump max number of cpus to 1024 2015-03-26 10:52:28 -03:00