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perf annotate: Cleanup disasm__calc_percent()

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The loop end condition is calculated from next disasm_line or the symbol
size if it's the last disasm_line.  But it doesn't need to be calculated
at every iteration.  Moving it out of the function can simplify code a
bit.  Also the src_line doesn't need to be checked in every time.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1362462812-30885-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-03-05 14:53:24 +09:00 committed by Arnaldo Carvalho de Melo
parent e5ccf9f45d
commit bd64fcb880
1 changed files with 15 additions and 15 deletions
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30
tools/perf/util/annotate.c
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@ -603,30 +603,29 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
return NULL;
}
static double disasm__calc_percent(struct disasm_line *next,
struct annotation *notes, int evidx,
s64 offset, u64 len, const char **path)
static double disasm__calc_percent(struct annotation *notes, int evidx,
s64 offset, s64 end, const char **path)
{
struct source_line *src_line = notes->src->lines;
struct sym_hist *h = annotation__histogram(notes, evidx);
unsigned int hits = 0;
double percent = 0.0;
while (offset < (s64)len &&
(next == NULL || offset < next->offset)) {
if (src_line) {
if (src_line) {
while (offset < end) {
if (*path == NULL)
*path = src_line[offset].path;
percent += src_line[offset].percent;
} else
hits += h->addr[offset];
++offset;
percent += src_line[offset++].percent;
}
} else {
while (offset < end)
hits += h->addr[offset++];
if (h->sum)
percent = 100.0 * hits / h->sum;
}
if (src_line == NULL && h->sum)
percent = 100.0 * hits / h->sum;
return percent;
}
@ -648,8 +647,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
next = disasm__get_next_ip_line(&notes->src->source, dl);
percent = disasm__calc_percent(next, notes, evsel->idx,
offset, len, &path);
percent = disasm__calc_percent(notes, evsel->idx, offset,
next ? next->offset : (s64) len,
&path);
if (percent < min_pcnt)
return -1;