diff options
Diffstat (limited to 'tools/perf/builtin-kvm.c')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 0c36f2ac6a0e..72e2ca096bf5 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -26,6 +26,9 @@ #include <sys/timerfd.h> #endif #include <sys/time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> #include <linux/kernel.h> #include <linux/time64.h> @@ -740,26 +743,33 @@ static bool verify_vcpu(int vcpu) static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, u64 *mmap_time) { + struct perf_evlist *evlist = kvm->evlist; union perf_event *event; - struct perf_sample sample; + struct perf_mmap *md; + u64 timestamp; s64 n = 0; int err; *mmap_time = ULLONG_MAX; - while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { - err = perf_evlist__parse_sample(kvm->evlist, event, &sample); + md = &evlist->mmap[idx]; + err = perf_mmap__read_init(md); + if (err < 0) + return (err == -EAGAIN) ? 0 : -1; + + while ((event = perf_mmap__read_event(md)) != NULL) { + err = perf_evlist__parse_sample_timestamp(evlist, event, ×tamp); if (err) { - perf_evlist__mmap_consume(kvm->evlist, idx); + perf_mmap__consume(md); pr_err("Failed to parse sample\n"); return -1; } - err = perf_session__queue_event(kvm->session, event, &sample, 0); + err = perf_session__queue_event(kvm->session, event, timestamp, 0); /* * FIXME: Here we can't consume the event, as perf_session__queue_event will * point to it, and it'll get possibly overwritten by the kernel. */ - perf_evlist__mmap_consume(kvm->evlist, idx); + perf_mmap__consume(md); if (err) { pr_err("Failed to enqueue sample: %d\n", err); @@ -768,7 +778,7 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, /* save time stamp of our first sample for this mmap */ if (n == 0) - *mmap_time = sample.time; + *mmap_time = timestamp; /* limit events per mmap handled all at once */ n++; @@ -776,6 +786,7 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, break; } + perf_mmap__read_done(md); return n; } @@ -1044,7 +1055,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm) goto out; } - if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { + if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages) < 0) { ui__error("Failed to mmap the events: %s\n", str_error_r(errno, sbuf, sizeof(sbuf))); perf_evlist__close(evlist); |
