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| author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2019-03-18 20:42:19 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-05-15 16:36:49 -0300 |
| commit | 51255a8af7c41c876c2d715a35ab03c13302a607 (patch) | |
| tree | 1e9f55e736eae22639f35ca94d7defc15e67dfdc /tools/perf/builtin-record.c | |
| parent | 42e1fd80a5b8bf9188ddb502b788433ece189aae (diff) | |
| download | linux-51255a8af7c41c876c2d715a35ab03c13302a607.tar.bz2 | |
perf mmap: Implement dedicated memory buffer for data compression
Implemented mmap data buffer that is used as the memory to operate
on when compressing data in case of serial trace streaming.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
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/49b31321-0f70-392b-9a4f-649d3affe090@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 | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 45a80b3584ad..ca6d7488e34b 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -372,6 +372,8 @@ static int record__mmap_flush_parse(const struct option *opt, return 0; } +static unsigned int comp_level_max = 22; + static int record__comp_enabled(struct record *rec) { return rec->opts.comp_level > 0; @@ -587,7 +589,7 @@ static int record__mmap_evlist(struct record *rec, opts->auxtrace_mmap_pages, opts->auxtrace_snapshot_mode, opts->nr_cblocks, opts->affinity, - opts->mmap_flush) < 0) { + opts->mmap_flush, opts->comp_level) < 0) { if (errno == EPERM) { pr_err("Permission error mapping pages.\n" "Consider increasing " @@ -2298,6 +2300,10 @@ int cmd_record(int argc, const char **argv) pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]); pr_debug("mmap flush: %d\n", rec->opts.mmap_flush); + if (rec->opts.comp_level > comp_level_max) + rec->opts.comp_level = comp_level_max; + pr_debug("comp level: %d\n", rec->opts.comp_level); + err = __cmd_record(&record, argc, argv); out: perf_evlist__delete(rec->evlist); |