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| author | Don Zickus <dzickus@redhat.com> | 2014-05-31 00:10:05 +0400 |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-09 15:34:48 +0400 |
| commit | 2b1b71003ea809e619bd73e74dfc2a73069de66f (patch) | |
| tree | 314e28161d9cebf3630eaf46b9096abb73e3316a | |
| parent | 7365be55eee37ddb4f487263b4ba5bc8beb9638f (diff) | |
| download | linux-2b1b71003ea809e619bd73e74dfc2a73069de66f.tar.xz | |
perf tools: Add support to dynamically get cacheline size
Different arches may have different cacheline sizes. Look it up and set
a global variable for reference.
Signed-off-by: Don Zickus <dzickus@redhat.com>
Link: http://lkml.kernel.org/r/1401480605-97442-1-git-send-email-dzickus@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
| -rw-r--r-- | tools/perf/perf.c | 1 | ||||
| -rw-r--r-- | tools/perf/util/util.c | 1 | ||||
| -rw-r--r-- | tools/perf/util/util.h | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 78f7b920e548..95c58fc15284 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -458,6 +458,7 @@ int main(int argc, const char **argv) /* The page_size is placed in util object. */ page_size = sysconf(_SC_PAGE_SIZE); + cacheline_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); cmd = perf_extract_argv0_path(argv[0]); if (!cmd) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 7fff6be07f07..95aefa78bb07 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -17,6 +17,7 @@ * XXX We need to find a better place for these things... */ unsigned int page_size; +int cacheline_size; bool test_attr__enabled; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index b03da44e94e4..66864364ccb4 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -304,6 +304,7 @@ char *rtrim(char *s); void dump_stack(void); extern unsigned int page_size; +extern int cacheline_size; void get_term_dimensions(struct winsize *ws); |