diff options
| author | Ian Rogers <irogers@google.com> | 2023-12-07 03:16:27 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-01-03 21:55:01 +0100 |
| commit | 7d1405c71df21f6c394b8a885aa8a133f749fa22 (patch) | |
| tree | 26f84e8727e43deffcf5d67d32f801325e8fc441 /tools/perf | |
| parent | perf env: Avoid recursively taking env->bpf_progs.lock (diff) | |
| download | linux-7d1405c71df21f6c394b8a885aa8a133f749fa22.tar.xz linux-7d1405c71df21f6c394b8a885aa8a133f749fa22.zip | |
perf record: Reduce memory for recording PERF_RECORD_LOST_SAMPLES event
Reduce from PERF_SAMPLE_MAX_SIZE to "sizeof(*lost) +
session->machines.host.id_hdr_size".
Suggested-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231207021627.1322884-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-record.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a89013c44fd5..91e6828c38cc 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1954,7 +1954,8 @@ static void record__read_lost_samples(struct record *rec) if (count.lost) { if (!lost) { - lost = zalloc(PERF_SAMPLE_MAX_SIZE); + lost = zalloc(sizeof(*lost) + + session->machines.host.id_hdr_size); if (!lost) { pr_debug("Memory allocation failed\n"); return; @@ -1970,7 +1971,8 @@ static void record__read_lost_samples(struct record *rec) lost_count = perf_bpf_filter__lost_count(evsel); if (lost_count) { if (!lost) { - lost = zalloc(PERF_SAMPLE_MAX_SIZE); + lost = zalloc(sizeof(*lost) + + session->machines.host.id_hdr_size); if (!lost) { pr_debug("Memory allocation failed\n"); return; |