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authorLi Zefan <lizf@cn.fujitsu.com>2009-12-10 15:21:57 +0800
committerIngo Molnar <mingo@elte.hu>2009-12-10 08:30:27 +0100
commit90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9 (patch)
tree3cb7015aa85ed6410eb9947f9bfd607f74f36f95 /tools/perf/Documentation
parent1bbfa6f25673019dc0acc9308b667c96f6cda8bf (diff)
downloadop-kernel-dev-90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9.zip
op-kernel-dev-90b86a9f7dc22e7ff8e8c79ed553860454ff8dd9.tar.gz
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')
-rw-r--r--tools/perf/Documentation/perf-kmem.txt13
1 files changed, 8 insertions, 5 deletions
diff --git a/tools/perf/Documentation/perf-kmem.txt b/tools/perf/Documentation/perf-kmem.txt
index 44b0ce3..eac4d852e 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...]>::
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