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authorNamhyung Kim <namhyung@kernel.org>2022-12-15 22:28:15 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-12-21 20:52:40 +0300
commitec222d7e7cfd09276891ffdf57d75858fe148c9f (patch)
treebed3839f34d535b43dcb0455911250546a4358bb /tools/perf
parentcb6e92c764272ca288398ad6442bbb0f064c2da8 (diff)
downloadlinux-ec222d7e7cfd09276891ffdf57d75858fe148c9f.tar.xz
perf hist: Improve srcline sort key performance
The sort_entry->cmp() will be called for eventy sample data to find a matching entry. When it has 'srcline' sort key, that means it needs to call addr2line or libbfd everytime. This is not optimal because many samples will have same address and it just can call addr2line once. So postpone the actual srcline check to the sort_entry->collpase() and compare addresses in ->cmp(). Also it needs to add ->init() callback to make sure it has srcline info. If a sample has a unique data, chances are the entry can be sorted out by other (previous) keys and callbacks in sort_srcline never called. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20221215192817.2734573-8-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/sort.c29
1 files changed, 27 insertions, 2 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index f6333b3dca35..913045c5b2b2 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -374,6 +374,18 @@ char *hist_entry__srcline(struct hist_entry *he)
static int64_t
sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
{
+ int64_t ret;
+
+ ret = _sort__addr_cmp(left->ip, right->ip);
+ if (ret)
+ return ret;
+
+ return sort__dso_cmp(left, right);
+}
+
+static int64_t
+sort__srcline_collapse(struct hist_entry *left, struct hist_entry *right)
+{
if (!left->srcline)
left->srcline = hist_entry__srcline(left);
if (!right->srcline)
@@ -382,18 +394,31 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
return strcmp(right->srcline, left->srcline);
}
-static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf,
- size_t size, unsigned int width)
+static int64_t
+sort__srcline_sort(struct hist_entry *left, struct hist_entry *right)
+{
+ return sort__srcline_collapse(left, right);
+}
+
+static void
+sort__srcline_init(struct hist_entry *he)
{
if (!he->srcline)
he->srcline = hist_entry__srcline(he);
+}
+static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf,
+ size_t size, unsigned int width)
+{
return repsep_snprintf(bf, size, "%-.*s", width, he->srcline);
}
struct sort_entry sort_srcline = {
.se_header = "Source:Line",
.se_cmp = sort__srcline_cmp,
+ .se_collapse = sort__srcline_collapse,
+ .se_sort = sort__srcline_sort,
+ .se_init = sort__srcline_init,
.se_snprintf = hist_entry__srcline_snprintf,
.se_width_idx = HISTC_SRCLINE,
};