Commit-ID: 2b1b71003ea809e619bd73e74dfc2a73069de66f Gitweb: http://git.kernel.org/tip/2b1b71003ea809e619bd73e74dfc2a73069de66f Author: Don Zickus <[email protected]> AuthorDate: Fri, 30 May 2014 16:10:05 -0400 Committer: Jiri Olsa <[email protected]> CommitDate: Mon, 9 Jun 2014 13:34:48 +0200
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 <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/perf.c | 1 + tools/perf/util/util.c | 1 + tools/perf/util/util.h | 1 + 3 files changed, 3 insertions(+) diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 78f7b92..95c58fc 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 7fff6be..95aefa7 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 b03da44..6686436 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
