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authorNamhyung Kim <namhyung.kim@lge.com>2012-06-20 08:08:06 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-06-27 18:17:48 +0200
commit08942f6d5d992e9486b07653fd87ea8182a22fa0 (patch)
treec2e7389b108f1951841b0024a02b7fc90950f07b /tools/perf/bench
parentperf symbols: Follow .gnu_debuglink section to find separate symbols (diff)
downloadlinux-08942f6d5d992e9486b07653fd87ea8182a22fa0.tar.xz
linux-08942f6d5d992e9486b07653fd87ea8182a22fa0.zip
perf bench: Documentation update
The current perf-bench documentation has a couple of typos and even lacks entire description of mem subsystem. Fix it. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1340172486-17805-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/bench')
-rw-r--r--tools/perf/bench/mem-memcpy.c4
-rw-r--r--tools/perf/bench/mem-memset.c8
2 files changed, 6 insertions, 6 deletions
diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c
index 71557225bf92..d990365cafa0 100644
--- a/tools/perf/bench/mem-memcpy.c
+++ b/tools/perf/bench/mem-memcpy.c
@@ -32,13 +32,13 @@ static bool no_prefault;
static const struct option options[] = {
OPT_STRING('l', "length", &length_str, "1MB",
"Specify length of memory to copy. "
- "available unit: B, MB, GB (upper and lower)"),
+ "Available units: B, KB, MB, GB and TB (upper and lower)"),
OPT_STRING('r', "routine", &routine, "default",
"Specify routine to copy"),
OPT_INTEGER('i', "iterations", &iterations,
"repeat memcpy() invocation this number of times"),
OPT_BOOLEAN('c', "clock", &use_clock,
- "Use CPU clock for measuring"),
+ "Use cycles event instead of gettimeofday() for measuring"),
OPT_BOOLEAN('o', "only-prefault", &only_prefault,
"Show only the result with page faults before memcpy()"),
OPT_BOOLEAN('n', "no-prefault", &no_prefault,
diff --git a/tools/perf/bench/mem-memset.c b/tools/perf/bench/mem-memset.c
index e9079185bd72..bf0d5f552017 100644
--- a/tools/perf/bench/mem-memset.c
+++ b/tools/perf/bench/mem-memset.c
@@ -31,14 +31,14 @@ static bool no_prefault;
static const struct option options[] = {
OPT_STRING('l', "length", &length_str, "1MB",
- "Specify length of memory to copy. "
- "available unit: B, MB, GB (upper and lower)"),
+ "Specify length of memory to set. "
+ "Available units: B, KB, MB, GB and TB (upper and lower)"),
OPT_STRING('r', "routine", &routine, "default",
- "Specify routine to copy"),
+ "Specify routine to set"),
OPT_INTEGER('i', "iterations", &iterations,
"repeat memset() invocation this number of times"),
OPT_BOOLEAN('c', "clock", &use_clock,
- "Use CPU clock for measuring"),
+ "Use cycles event instead of gettimeofday() for measuring"),
OPT_BOOLEAN('o', "only-prefault", &only_prefault,
"Show only the result with page faults before memset()"),
OPT_BOOLEAN('n', "no-prefault", &no_prefault,