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perf bench mem: The -o and -n options are mutually exclusive 

-o, --only-prefault   Show only the result with page faults before mem*
 -n, --no-prefault     Show only the result without page faults before mem*

Makes no sense to call together. Applies to both memset and memcpy.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-8-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Davidlohr Bueso 2014-06-16 11:14:25 -07:00 committed by Arnaldo Carvalho de Melo
parent d9de84afd1
commit 424e963488
2 changed files with 10 additions and 0 deletions
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5
tools/perf/bench/mem-memcpy.c
View File

@ -189,6 +189,11 @@ int bench_mem_memcpy(int argc, const char **argv,
argc = parse_options(argc, argv, options,
bench_mem_memcpy_usage, 0);
if (no_prefault && only_prefault) {
fprintf(stderr, "Invalid options: -o and -n are mutually exclusive\n");
return 1;
}
if (use_cycle)
init_cycle();

5
tools/perf/bench/mem-memset.c
View File

@ -181,6 +181,11 @@ int bench_mem_memset(int argc, const char **argv,
argc = parse_options(argc, argv, options,
bench_mem_memset_usage, 0);
if (no_prefault && only_prefault) {
fprintf(stderr, "Invalid options: -o and -n are mutually exclusive\n");
return 1;
}
if (use_cycle)
init_cycle();