perf annotate: Cleanup disasm__calc_percent()
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>
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@ -603,29 +603,28 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
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return NULL;
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}
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static double disasm__calc_percent(struct disasm_line *next,
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struct annotation *notes, int evidx,
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s64 offset, u64 len, const char **path)
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static double disasm__calc_percent(struct annotation *notes, int evidx,
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s64 offset, s64 end, const char **path)
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{
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struct source_line *src_line = notes->src->lines;
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struct sym_hist *h = annotation__histogram(notes, evidx);
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unsigned int hits = 0;
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double percent = 0.0;
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while (offset < (s64)len &&
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(next == NULL || offset < next->offset)) {
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if (src_line) {
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while (offset < end) {
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if (*path == NULL)
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*path = src_line[offset].path;
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percent += src_line[offset].percent;
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} else
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hits += h->addr[offset];
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++offset;
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percent += src_line[offset++].percent;
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}
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} else {
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while (offset < end)
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hits += h->addr[offset++];
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if (src_line == NULL && h->sum)
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if (h->sum)
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percent = 100.0 * hits / h->sum;
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}
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return percent;
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}
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@ -648,8 +647,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
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next = disasm__get_next_ip_line(¬es->src->source, dl);
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percent = disasm__calc_percent(next, notes, evsel->idx,
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offset, len, &path);
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percent = disasm__calc_percent(notes, evsel->idx, offset,
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next ? next->offset : (s64) len,
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&path);
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if (percent < min_pcnt)
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return -1;
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