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authorArnaldo Carvalho de Melo <acme@redhat.com>2012-04-05 16:15:59 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-04-05 18:49:18 -0300
commit8b84a568117fde9b77575f2060274eddab424c32 (patch)
treedadc32f7df64619334f252c9c5206b82b99a73a6
parentperf top: Add intel_idle to the skip list (diff)
downloadlinux-dev-8b84a568117fde9b77575f2060274eddab424c32.tar.xz
linux-dev-8b84a568117fde9b77575f2060274eddab424c32.zip
perf annotate: Fix hist decay
We were only decaying the entries for the offsets that were associated with an objdump line. That way, when we accrued the whole instruction addr range, more than 100% was appearing in some cases in the live annotation TUI. Fix it by not traversing the source code line at all, just iterate thru the complete addr range decaying each one. Reported-by: Mike Galbraith <mgalbraith@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-hcae5oxa22syjrnalsxz7s6n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
-rw-r--r--tools/perf/util/annotate.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 199f69ec656f..70f5a4dc17e9 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -561,16 +561,12 @@ void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
{
struct annotation *notes = symbol__annotation(sym);
struct sym_hist *h = annotation__histogram(notes, evidx);
- struct objdump_line *pos;
- int len = sym->end - sym->start;
+ int len = sym->end - sym->start, offset;
h->sum = 0;
-
- list_for_each_entry(pos, &notes->src->source, node) {
- if (pos->offset != -1 && pos->offset < len) {
- h->addr[pos->offset] = h->addr[pos->offset] * 7 / 8;
- h->sum += h->addr[pos->offset];
- }
+ for (offset = 0; offset < len; ++offset) {
+ h->addr[offset] = h->addr[offset] * 7 / 8;
+ h->sum += h->addr[offset];
}
}