diff options
| -rw-r--r-- | tools/perf/builtin-record.c | 8 | ||||
| -rw-r--r-- | tools/perf/builtin-report.c | 57 |
2 files changed, 53 insertions, 12 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 0f5771f615d..a177a591b52 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -37,6 +37,7 @@ static pid_t target_pid = -1; static int inherit = 1; static int force = 0; static int append_file = 0; +static int call_graph = 0; static int verbose = 0; static long samples; @@ -351,11 +352,16 @@ static void create_counter(int counter, int cpu, pid_t pid) int track = 1; attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; + if (freq) { attr->sample_type |= PERF_SAMPLE_PERIOD; attr->freq = 1; attr->sample_freq = freq; } + + if (call_graph) + attr->sample_type |= PERF_SAMPLE_CALLCHAIN; + attr->mmap = track; attr->comm = track; attr->inherit = (cpu < 0) && inherit; @@ -555,6 +561,8 @@ static const struct option options[] = { "profile at this frequency"), OPT_INTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"), + OPT_BOOLEAN('g', "call-graph", &call_graph, + "do call-graph (stack chain/backtrace) recording"), OPT_BOOLEAN('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), OPT_END() diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 37515da637f..aebba565934 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -36,6 +36,7 @@ static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV; static int dump_trace = 0; #define dprintf(x...) do { if (dump_trace) printf(x); } while (0) +#define cdprintf(x...) do { if (dump_trace) color_fprintf(stdout, color, x); } while (0) static int verbose; static int full_paths; @@ -43,11 +44,19 @@ static int full_paths; static unsigned long page_size; static unsigned long mmap_window = 32; +struct ip_chain_event { + __u16 nr; + __u16 hv; + __u16 kernel; + __u16 user; + __u64 ips[]; +}; + struct ip_event { struct perf_event_header header; __u64 ip; __u32 pid, tid; - __u64 period; + unsigned char __more_data[]; }; struct mmap_event { @@ -944,9 +953,13 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head) __u64 ip = event->ip.ip; __u64 period = 1; struct map *map = NULL; + void *more_data = event->ip.__more_data; + struct ip_chain_event *chain; - if (event->header.type & PERF_SAMPLE_PERIOD) - period = event->ip.period; + if (event->header.type & PERF_SAMPLE_PERIOD) { + period = *(__u64 *)more_data; + more_data += sizeof(__u64); + } dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p period: %Ld\n", (void *)(offset + head), @@ -956,6 +969,22 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head) (void *)(long)ip, (long long)period); + if (event->header.type & PERF_SAMPLE_CALLCHAIN) { + int i; + + chain = (void *)more_data; + + if (dump_trace) { + dprintf("... chain: u:%d, k:%d, nr:%d\n", + chain->user, + chain->kernel, + chain->nr); + + for (i = 0; i < chain->nr; i++) + dprintf("..... %2d: %p\n", i, (void *)chain->ips[i]); + } + } + dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid); if (thread == NULL) { @@ -1098,30 +1127,34 @@ process_period_event(event_t *event, unsigned long offset, unsigned long head) static void trace_event(event_t *event) { unsigned char *raw_event = (void *)event; + char *color = PERF_COLOR_BLUE; int i, j; if (!dump_trace) return; - dprintf(".\n. ... raw event: size %d bytes\n", event->header.size); + dprintf("."); + cdprintf("\n. ... raw event: size %d bytes\n", event->header.size); for (i = 0; i < event->header.size; i++) { - if ((i & 15) == 0) - dprintf(". %04x: ", i); + if ((i & 15) == 0) { + dprintf("."); + cdprintf(" %04x: ", i); + } - dprintf(" %02x", raw_event[i]); + cdprintf(" %02x", raw_event[i]); if (((i & 15) == 15) || i == event->header.size-1) { - dprintf(" "); + cdprintf(" "); for (j = 0; j < 15-(i & 15); j++) - dprintf(" "); + cdprintf(" "); for (j = 0; j < (i & 15); j++) { if (isprint(raw_event[i-15+j])) - dprintf("%c", raw_event[i-15+j]); + cdprintf("%c", raw_event[i-15+j]); else - dprintf("."); + cdprintf("."); } - dprintf("\n"); + cdprintf("\n"); } } dprintf(".\n"); |