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| author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2019-01-22 20:47:43 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-02-06 10:00:39 -0300 |
| commit | 9d2ed64587c045304efe8872b0258c30803d370c (patch) | |
| tree | 719b794d0f9b543636b4bdef56d13516c2936d38 /tools/perf/builtin-record.c | |
| parent | 159b0da50adb021fe452d849fb73b408f21de3f8 (diff) | |
| download | lwn-9d2ed64587c045304efe8872b0258c30803d370c.tar.gz lwn-9d2ed64587c045304efe8872b0258c30803d370c.zip | |
perf record: Allocate affinity masks
Allocate affinity option and masks for mmap data buffers and record
thread as well as initialize allocated objects.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/526fa2b0-07de-6dbd-a7e9-26ba875593c9@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 56e9d9e8c174..7ced5f3e8100 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -81,12 +81,17 @@ struct record { bool timestamp_boundary; struct switch_output switch_output; unsigned long long samples; + cpu_set_t affinity_mask; }; static volatile int auxtrace_record__snapshot_started; static DEFINE_TRIGGER(auxtrace_snapshot_trigger); static DEFINE_TRIGGER(switch_output_trigger); +static const char *affinity_tags[PERF_AFFINITY_MAX] = { + "SYS", "NODE", "CPU" +}; + static bool switch_output_signal(struct record *rec) { return rec->switch_output.signal && @@ -533,7 +538,8 @@ static int record__mmap_evlist(struct record *rec, if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, opts->auxtrace_mmap_pages, - opts->auxtrace_snapshot_mode, opts->nr_cblocks) < 0) { + opts->auxtrace_snapshot_mode, + opts->nr_cblocks, opts->affinity) < 0) { if (errno == EPERM) { pr_err("Permission error mapping pages.\n" "Consider increasing " @@ -1977,6 +1983,9 @@ int cmd_record(int argc, const char **argv) # undef REASON #endif + CPU_ZERO(&rec->affinity_mask); + rec->opts.affinity = PERF_AFFINITY_SYS; + rec->evlist = perf_evlist__new(); if (rec->evlist == NULL) return -ENOMEM; @@ -2140,6 +2149,8 @@ int cmd_record(int argc, const char **argv) if (verbose > 0) pr_info("nr_cblocks: %d\n", rec->opts.nr_cblocks); + pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]); + err = __cmd_record(&record, argc, argv); out: perf_evlist__delete(rec->evlist); |