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| author | Ingo Molnar <mingo@elte.hu> | 2011-04-19 07:55:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-04-19 07:56:17 +0200 |
| commit | 68d2cf25d39324c54b5e42de7915c623a0917abe (patch) | |
| tree | ff1291450d7e6630bc77ec1363c3db8d74fa58b0 /tools/perf/builtin-record.c | |
| parent | 176fcc5c5f0131504a55e1e1d35389c49a9177c2 (diff) | |
| parent | 5d2cd90922c778908bd0cd669e572a5b5eafd737 (diff) | |
| download | linux-68d2cf25d39324c54b5e42de7915c623a0917abe.tar.gz linux-68d2cf25d39324c54b5e42de7915c623a0917abe.tar.bz2 linux-68d2cf25d39324c54b5e42de7915c623a0917abe.zip | |
Merge branch 'perf/urgent' into perf/core
Merge reason: we'll be queueing up dependent changes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index db6adecf46f1..416538248a4b 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -41,7 +41,7 @@ static u64 user_interval = ULLONG_MAX; static u64 default_interval = 0; static unsigned int page_size; -static unsigned int mmap_pages = 128; +static unsigned int mmap_pages = UINT_MAX; static unsigned int user_freq = UINT_MAX; static int freq = 1000; static int output; @@ -163,6 +163,7 @@ static void config_attr(struct perf_evsel *evsel, struct perf_evlist *evlist) struct perf_event_attr *attr = &evsel->attr; int track = !evsel->idx; /* only the first counter needs these */ + attr->inherit = !no_inherit; attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID; @@ -251,6 +252,9 @@ static void open_counters(struct perf_evlist *evlist) { struct perf_evsel *pos; + if (evlist->cpus->map[0] < 0) + no_inherit = true; + list_for_each_entry(pos, &evlist->entries, node) { struct perf_event_attr *attr = &pos->attr; /* @@ -271,8 +275,7 @@ static void open_counters(struct perf_evlist *evlist) retry_sample_id: attr->sample_id_all = sample_id_all_avail ? 1 : 0; try_again: - if (perf_evsel__open(pos, evlist->cpus, evlist->threads, group, - !no_inherit) < 0) { + if (perf_evsel__open(pos, evlist->cpus, evlist->threads, group) < 0) { int err = errno; if (err == EPERM || err == EACCES) { @@ -513,6 +516,10 @@ static int __cmd_record(int argc, const char **argv) if (have_tracepoints(&evsel_list->entries)) perf_header__set_feat(&session->header, HEADER_TRACE_INFO); + /* 512 kiB: default amount of unprivileged mlocked memory */ + if (mmap_pages == UINT_MAX) + mmap_pages = (512 * 1024) / page_size; + if (forks) { child_pid = fork(); if (child_pid < 0) { |