diff options
| author | Andi Kleen <ak@linux.intel.com> | 2015-07-18 08:24:46 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-08-06 16:29:45 -0300 |
| commit | 0e332f033a8216fa03792fde69882f66500848c7 (patch) | |
| tree | b88becef22fec7eb369b5dec4ba58e57985fd4b5 /tools/perf/util/sort.c | |
| parent | 93df8a1ed6231727c5db94a80b1a6bd5ee67cec3 (diff) | |
| download | linux-0e332f033a8216fa03792fde69882f66500848c7.tar.bz2 | |
perf tools: Add support for cycles, weight branch_info field
cycles is a new branch_info field available on some CPUs that indicates
the time deltas between branches in the LBR.
Add a sort key and output code for the cycles to allow to display the
basic block cycles individually in perf report.
We also pass in the cycles for weight when LBRs are processed, which
allows to get global and local weight, to get an estimate of the total
cost.
And also print the cycles information for perf report -D. I also added
printing for the previously missing LBR flags (mispredict etc.)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1437233094-12844-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/sort.c')
| -rw-r--r-- | tools/perf/util/sort.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 4c65a143a34c..5b7a50c04e45 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -526,6 +526,29 @@ static int hist_entry__mispredict_snprintf(struct hist_entry *he, char *bf, return repsep_snprintf(bf, size, "%-*.*s", width, width, out); } +static int64_t +sort__cycles_cmp(struct hist_entry *left, struct hist_entry *right) +{ + return left->branch_info->flags.cycles - + right->branch_info->flags.cycles; +} + +static int hist_entry__cycles_snprintf(struct hist_entry *he, char *bf, + size_t size, unsigned int width) +{ + if (he->branch_info->flags.cycles == 0) + return repsep_snprintf(bf, size, "%-*s", width, "-"); + return repsep_snprintf(bf, size, "%-*hd", width, + he->branch_info->flags.cycles); +} + +struct sort_entry sort_cycles = { + .se_header = "Basic Block Cycles", + .se_cmp = sort__cycles_cmp, + .se_snprintf = hist_entry__cycles_snprintf, + .se_width_idx = HISTC_CYCLES, +}; + /* --sort daddr_sym */ static int64_t sort__daddr_cmp(struct hist_entry *left, struct hist_entry *right) @@ -1190,6 +1213,7 @@ static struct sort_dimension bstack_sort_dimensions[] = { DIM(SORT_MISPREDICT, "mispredict", sort_mispredict), DIM(SORT_IN_TX, "in_tx", sort_in_tx), DIM(SORT_ABORT, "abort", sort_abort), + DIM(SORT_CYCLES, "cycles", sort_cycles), }; #undef DIM |