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| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-12-10 08:21:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-10 08:30:27 +0100 |
| commit | 90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9 (patch) | |
| tree | 3cb7015aa85ed6410eb9947f9bfd607f74f36f95 /tools/perf/Documentation/perf-kmem.txt | |
| parent | sched: Mark sched_clock() as notrace (diff) | |
| download | linux-90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9.tar.xz linux-90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9.zip | |
perf kmem: Show usage if no option is specified
As Ingo suggested, make "perf kmem" show help information.
"perf kmem stat [--caller] [--alloc] .." will show memory
statistics.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <4B20A195.8030106@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/Documentation/perf-kmem.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-kmem.txt | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/tools/perf/Documentation/perf-kmem.txt b/tools/perf/Documentation/perf-kmem.txt index 44b0ce35c28a..eac4d852e7cd 100644 --- a/tools/perf/Documentation/perf-kmem.txt +++ b/tools/perf/Documentation/perf-kmem.txt @@ -8,16 +8,16 @@ perf-kmem - Tool to trace/measure kernel memory(slab) properties SYNOPSIS -------- [verse] -'perf kmem' {record} [<options>] +'perf kmem' {record|stat} [<options>] DESCRIPTION ----------- -There's two variants of perf kmem: +There are two variants of perf kmem: 'perf kmem record <command>' to record the kmem events of an arbitrary workload. - 'perf kmem' to report kernel memory statistics. + 'perf kmem stat' to report kernel memory statistics. OPTIONS ------- @@ -25,8 +25,11 @@ OPTIONS --input=<file>:: Select the input file (default: perf.data) ---stat=<caller|alloc>:: - Select per callsite or per allocation statistics +--caller:: + Show per-callsite statistics + +--alloc:: + Show per-allocation statistics -s <key[,key2...]>:: --sort=<key[,key2...]>:: |