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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
perf: Make common SAMPLE_EVENT parser
Currently, sample event data is parsed for each commands, and it is assuming that the data is not including other data. (E.g. timechart, trace, etc. can't parse the event if it has PERF_SAMPLE_CALLCHAIN) So, even if we record the superset data for multiple commands at a time, commands can't parse. etc. To fix it, this makes common sample event parser, and use it to parse sample event correctly. (PERF_SAMPLE_READ is unsupported for now though, it seems to be not using.) Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <87hbs48imv.fsf@devron.myhome.or.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
parent
028c515253
commit
180f95e29a
7 changed files with 155 additions and 146 deletions
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@ -320,35 +320,23 @@ process_raw_event(event_t *raw_event __used, void *more_data,
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static int process_sample_event(event_t *event)
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{
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u64 ip = event->ip.ip;
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u64 timestamp = -1;
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u32 cpu = -1;
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u64 period = 1;
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void *more_data = event->ip.__more_data;
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struct thread *thread = threads__findnew(event->ip.pid);
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struct sample_data data;
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struct thread *thread;
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if (sample_type & PERF_SAMPLE_TIME) {
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timestamp = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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memset(&data, 0, sizeof(data));
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data.time = -1;
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data.cpu = -1;
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data.period = 1;
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if (sample_type & PERF_SAMPLE_CPU) {
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cpu = *(u32 *)more_data;
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more_data += sizeof(u32);
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more_data += sizeof(u32); /* reserved */
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}
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if (sample_type & PERF_SAMPLE_PERIOD) {
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period = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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event__parse_sample(event, sample_type, &data);
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dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
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event->header.misc,
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event->ip.pid, event->ip.tid,
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(void *)(long)ip,
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(long long)period);
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data.pid, data.tid,
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(void *)(long)data.ip,
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(long long)data.period);
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thread = threads__findnew(event->ip.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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@ -357,7 +345,7 @@ static int process_sample_event(event_t *event)
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dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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process_raw_event(event, more_data, cpu, timestamp, thread);
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process_raw_event(event, data.raw_data, data.cpu, data.time, thread);
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return 0;
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}
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@ -605,44 +605,41 @@ static int validate_chain(struct ip_callchain *chain, event_t *event)
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static int process_sample_event(event_t *event)
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{
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u64 ip = event->ip.ip;
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u64 period = 1;
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void *more_data = event->ip.__more_data;
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struct ip_callchain *chain = NULL;
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struct sample_data data;
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int cpumode;
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struct addr_location al;
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struct thread *thread = threads__findnew(event->ip.pid);
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struct thread *thread;
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if (sample_type & PERF_SAMPLE_PERIOD) {
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period = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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memset(&data, 0, sizeof(data));
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data.period = 1;
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event__parse_sample(event, sample_type, &data);
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dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
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event->header.misc,
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event->ip.pid, event->ip.tid,
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(void *)(long)ip,
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(long long)period);
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data.pid, data.tid,
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(void *)(long)data.ip,
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(long long)data.period);
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if (sample_type & PERF_SAMPLE_CALLCHAIN) {
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unsigned int i;
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chain = (void *)more_data;
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dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
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dump_printf("... chain: nr:%Lu\n", chain->nr);
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if (validate_chain(chain, event) < 0) {
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if (validate_chain(data.callchain, event) < 0) {
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pr_debug("call-chain problem with event, "
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"skipping it.\n");
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return 0;
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}
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if (dump_trace) {
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for (i = 0; i < chain->nr; i++)
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dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
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for (i = 0; i < data.callchain->nr; i++)
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dump_printf("..... %2d: %016Lx\n",
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i, data.callchain->ips[i]);
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}
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}
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thread = threads__findnew(data.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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@ -657,7 +654,7 @@ static int process_sample_event(event_t *event)
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cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
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thread__find_addr_location(thread, cpumode,
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MAP__FUNCTION, ip, &al, NULL);
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MAP__FUNCTION, data.ip, &al, NULL);
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/*
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* We have to do this here as we may have a dso with no symbol hit that
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* has a name longer than the ones with symbols sampled.
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@ -675,12 +672,12 @@ static int process_sample_event(event_t *event)
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if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
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return 0;
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if (hist_entry__add(&al, chain, period)) {
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if (hist_entry__add(&al, data.callchain, data.period)) {
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pr_debug("problem incrementing symbol count, skipping event\n");
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return -1;
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}
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event__stats.total += period;
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event__stats.total += data.period;
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return 0;
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}
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@ -1598,40 +1598,26 @@ process_raw_event(event_t *raw_event __used, void *more_data,
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static int process_sample_event(event_t *event)
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{
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struct sample_data data;
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struct thread *thread;
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u64 ip = event->ip.ip;
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u64 timestamp = -1;
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u32 cpu = -1;
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u64 period = 1;
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void *more_data = event->ip.__more_data;
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if (!(sample_type & PERF_SAMPLE_RAW))
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return 0;
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thread = threads__findnew(event->ip.pid);
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memset(&data, 0, sizeof(data));
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data.time = -1;
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data.cpu = -1;
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data.period = -1;
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if (sample_type & PERF_SAMPLE_TIME) {
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timestamp = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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cpu = *(u32 *)more_data;
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more_data += sizeof(u32);
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more_data += sizeof(u32); /* reserved */
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}
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if (sample_type & PERF_SAMPLE_PERIOD) {
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period = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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event__parse_sample(event, sample_type, &data);
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dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
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event->header.misc,
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event->ip.pid, event->ip.tid,
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(void *)(long)ip,
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(long long)period);
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data.pid, data.tid,
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(void *)(long)data.ip,
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(long long)data.period);
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thread = threads__findnew(data.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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@ -1640,10 +1626,10 @@ static int process_sample_event(event_t *event)
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dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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if (profile_cpu != -1 && profile_cpu != (int) cpu)
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if (profile_cpu != -1 && profile_cpu != (int)data.cpu)
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return 0;
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process_raw_event(event, more_data, cpu, timestamp, thread);
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process_raw_event(event, data.raw_data, data.cpu, data.time, thread);
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return 0;
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}
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@ -483,48 +483,22 @@ static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
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static int
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process_sample_event(event_t *event)
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{
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int cursor = 0;
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u64 addr = 0;
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u64 stamp = 0;
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u32 cpu = 0;
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u32 pid = 0;
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u32 size, *size_ptr;
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struct sample_data data;
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struct trace_entry *te;
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if (sample_type & PERF_SAMPLE_IP)
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cursor++;
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memset(&data, 0, sizeof(data));
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event__parse_sample(event, sample_type, &data);
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if (sample_type & PERF_SAMPLE_TID) {
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pid = event->sample.array[cursor]>>32;
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cursor++;
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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stamp = event->sample.array[cursor++];
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if (!first_time || first_time > stamp)
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first_time = stamp;
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if (last_time < stamp)
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last_time = stamp;
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if (!first_time || first_time > data.time)
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first_time = data.time;
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if (last_time < data.time)
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last_time = data.time;
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}
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if (sample_type & PERF_SAMPLE_ADDR)
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addr = event->sample.array[cursor++];
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if (sample_type & PERF_SAMPLE_ID)
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cursor++;
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if (sample_type & PERF_SAMPLE_STREAM_ID)
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cursor++;
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if (sample_type & PERF_SAMPLE_CPU)
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cpu = event->sample.array[cursor++] & 0xFFFFFFFF;
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if (sample_type & PERF_SAMPLE_PERIOD)
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cursor++;
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size_ptr = (void *)&event->sample.array[cursor];
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size = *size_ptr;
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size_ptr++;
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te = (void *)size_ptr;
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if (sample_type & PERF_SAMPLE_RAW && size > 0) {
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te = (void *)data.raw_data;
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if (sample_type & PERF_SAMPLE_RAW && data.raw_size > 0) {
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char *event_str;
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struct power_entry *pe;
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return 0;
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if (strcmp(event_str, "power:power_start") == 0)
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c_state_start(cpu, stamp, pe->value);
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c_state_start(data.cpu, data.time, pe->value);
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if (strcmp(event_str, "power:power_end") == 0)
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c_state_end(cpu, stamp);
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c_state_end(data.cpu, data.time);
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if (strcmp(event_str, "power:power_frequency") == 0)
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p_state_change(cpu, stamp, pe->value);
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p_state_change(data.cpu, data.time, pe->value);
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if (strcmp(event_str, "sched:sched_wakeup") == 0)
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sched_wakeup(cpu, stamp, pid, te);
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sched_wakeup(data.cpu, data.time, data.pid, te);
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if (strcmp(event_str, "sched:sched_switch") == 0)
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sched_switch(cpu, stamp, te);
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sched_switch(data.cpu, data.time, te);
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}
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return 0;
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}
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@ -66,58 +66,40 @@ static u64 sample_type;
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static int process_sample_event(event_t *event)
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{
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u64 ip = event->ip.ip;
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u64 timestamp = -1;
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u32 cpu = -1;
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u64 period = 1;
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void *more_data = event->ip.__more_data;
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struct thread *thread = threads__findnew(event->ip.pid);
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struct sample_data data;
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struct thread *thread;
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if (sample_type & PERF_SAMPLE_TIME) {
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timestamp = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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memset(&data, 0, sizeof(data));
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data.time = -1;
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data.cpu = -1;
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data.period = 1;
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if (sample_type & PERF_SAMPLE_CPU) {
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cpu = *(u32 *)more_data;
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more_data += sizeof(u32);
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more_data += sizeof(u32); /* reserved */
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}
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if (sample_type & PERF_SAMPLE_PERIOD) {
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period = *(u64 *)more_data;
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more_data += sizeof(u64);
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}
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event__parse_sample(event, sample_type, &data);
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dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
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event->header.misc,
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event->ip.pid, event->ip.tid,
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(void *)(long)ip,
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(long long)period);
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data.pid, data.tid,
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(void *)(long)data.ip,
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(long long)data.period);
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thread = threads__findnew(event->ip.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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if (sample_type & PERF_SAMPLE_RAW) {
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struct {
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u32 size;
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char data[0];
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} *raw = more_data;
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/*
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* FIXME: better resolve from pid from the struct trace_entry
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* field, although it should be the same than this perf
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* event pid
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*/
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scripting_ops->process_event(cpu, raw->data, raw->size,
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timestamp, thread->comm);
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scripting_ops->process_event(data.cpu, data.raw_data,
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data.raw_size,
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data.time, thread->comm);
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}
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event__stats.total += period;
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event__stats.total += data.period;
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return 0;
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}
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@ -310,3 +310,70 @@ int event__preprocess_sample(const event_t *self, struct addr_location *al,
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al->level == 'H' ? "[hypervisor]" : "<not found>");
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return 0;
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}
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int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
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{
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u64 *array = event->sample.array;
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if (type & PERF_SAMPLE_IP) {
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data->ip = event->ip.ip;
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array++;
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}
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if (type & PERF_SAMPLE_TID) {
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u32 *p = (u32 *)array;
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data->pid = p[0];
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data->tid = p[1];
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array++;
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}
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if (type & PERF_SAMPLE_TIME) {
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data->time = *array;
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array++;
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}
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if (type & PERF_SAMPLE_ADDR) {
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data->addr = *array;
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array++;
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}
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if (type & PERF_SAMPLE_ID) {
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data->id = *array;
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array++;
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}
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if (type & PERF_SAMPLE_STREAM_ID) {
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data->stream_id = *array;
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array++;
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}
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if (type & PERF_SAMPLE_CPU) {
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u32 *p = (u32 *)array;
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data->cpu = *p;
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array++;
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}
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if (type & PERF_SAMPLE_PERIOD) {
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data->period = *array;
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array++;
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}
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if (type & PERF_SAMPLE_READ) {
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pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
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return -1;
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}
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if (type & PERF_SAMPLE_CALLCHAIN) {
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data->callchain = (struct ip_callchain *)array;
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array += 1 + data->callchain->nr;
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}
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if (type & PERF_SAMPLE_RAW) {
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u32 *p = (u32 *)array;
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data->raw_size = *p;
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p++;
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data->raw_data = p;
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}
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return 0;
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}
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@ -56,11 +56,25 @@ struct read_event {
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u64 id;
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};
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struct sample_event{
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struct sample_event {
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struct perf_event_header header;
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u64 array[];
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};
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struct sample_data {
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u64 ip;
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u32 pid, tid;
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u64 time;
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u64 addr;
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u64 id;
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u64 stream_id;
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u32 cpu;
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u64 period;
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struct ip_callchain *callchain;
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u32 raw_size;
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void *raw_data;
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};
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#define BUILD_ID_SIZE 20
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struct build_id_event {
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@ -155,5 +169,6 @@ int event__process_task(event_t *self);
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struct addr_location;
|
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int event__preprocess_sample(const event_t *self, struct addr_location *al,
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symbol_filter_t filter);
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int event__parse_sample(event_t *event, u64 type, struct sample_data *data);
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|
||||
#endif /* __PERF_RECORD_H */
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||||
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Reference in a new issue