diff options
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index c9a07a1a75af..b21a8769db21 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -71,6 +71,7 @@ #include <linux/time64.h> #include <linux/zalloc.h> #include <linux/bitmap.h> +#include <sys/time.h> struct switch_output { bool enabled; @@ -1204,6 +1205,9 @@ static void record__init_features(struct record *rec) if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns)) perf_header__clear_feat(&session->header, HEADER_CLOCKID); + if (!rec->opts.use_clockid) + perf_header__clear_feat(&session->header, HEADER_CLOCK_DATA); + perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); if (!record__comp_enabled(rec)) perf_header__clear_feat(&session->header, HEADER_COMPRESSED); @@ -1552,6 +1556,40 @@ static int record__setup_sb_evlist(struct record *rec) return 0; } +static int record__init_clock(struct record *rec) +{ + struct perf_session *session = rec->session; + struct timespec ref_clockid; + struct timeval ref_tod; + u64 ref; + + if (!rec->opts.use_clockid) + return 0; + + session->header.env.clock.clockid = rec->opts.clockid; + + if (gettimeofday(&ref_tod, NULL) != 0) { + pr_err("gettimeofday failed, cannot set reference time.\n"); + return -1; + } + + if (clock_gettime(rec->opts.clockid, &ref_clockid)) { + pr_err("clock_gettime failed, cannot set reference time.\n"); + return -1; + } + + ref = (u64) ref_tod.tv_sec * NSEC_PER_SEC + + (u64) ref_tod.tv_usec * NSEC_PER_USEC; + + session->header.env.clock.tod_ns = ref; + + ref = (u64) ref_clockid.tv_sec * NSEC_PER_SEC + + (u64) ref_clockid.tv_nsec; + + session->header.env.clock.clockid_ns = ref; + return 0; +} + static int __cmd_record(struct record *rec, int argc, const char **argv) { int err; @@ -1632,6 +1670,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) return -1; } + if (record__init_clock(rec)) + return -1; + record__init_features(rec); if (rec->opts.use_clockid && rec->opts.clockid_res_ns) |