perf evsel: Cache associated event_format
We already lookup the associated event_format when reading the perf.data
header, so that we can cache the tracepoint name in evsel->name, so do
it a little further and save the event_format itself, so that we can
avoid relookups in tools that need to access it.
Change the tools to take the most obvious advantage, when they were
using pevent_find_event directly. More work is needed for further
removing the need of a pointer to pevent, such as when asking for event
field values ("common_pid" and the other common fields and per
event_format fields).
This is something that was planned but only got actually done when
Andrey Wagin needed to do this lookup at perf_tool->sample() time, when
we don't have access to pevent (session->pevent) to use with
pevent_find_event().
Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-txkvew2ckko0b594ae8fbnyk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
Родитель
8b6ee4c5d4
Коммит
fcf65bf149
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@ -1,6 +1,7 @@
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#include "builtin.h"
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#include "perf.h"
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#include "util/evsel.h"
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#include "util/util.h"
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#include "util/cache.h"
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#include "util/symbol.h"
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@ -57,11 +58,6 @@ static unsigned long nr_allocs, nr_cross_allocs;
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#define PATH_SYS_NODE "/sys/devices/system/node"
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struct perf_kmem {
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struct perf_tool tool;
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struct perf_session *session;
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};
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static void init_cpunode_map(void)
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{
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FILE *fp;
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@ -283,16 +279,10 @@ static void process_free_event(void *data,
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s_alloc->alloc_cpu = -1;
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}
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static void process_raw_event(struct perf_tool *tool,
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union perf_event *raw_event __used, void *data,
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static void process_raw_event(struct perf_evsel *evsel, void *data,
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int cpu, u64 timestamp, struct thread *thread)
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{
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struct perf_kmem *kmem = container_of(tool, struct perf_kmem, tool);
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struct event_format *event;
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int type;
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type = trace_parse_common_type(kmem->session->pevent, data);
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event = pevent_find_event(kmem->session->pevent, type);
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struct event_format *event = evsel->tp_format;
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if (!strcmp(event->name, "kmalloc") ||
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!strcmp(event->name, "kmem_cache_alloc")) {
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@ -313,10 +303,10 @@ static void process_raw_event(struct perf_tool *tool,
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}
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}
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static int process_sample_event(struct perf_tool *tool,
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static int process_sample_event(struct perf_tool *tool __used,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel __used,
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struct perf_evsel *evsel,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
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@ -329,18 +319,16 @@ static int process_sample_event(struct perf_tool *tool,
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dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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process_raw_event(tool, event, sample->raw_data, sample->cpu,
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process_raw_event(evsel, sample->raw_data, sample->cpu,
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sample->time, thread);
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return 0;
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}
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static struct perf_kmem perf_kmem = {
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.tool = {
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.sample = process_sample_event,
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.comm = perf_event__process_comm,
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.ordered_samples = true,
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},
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static struct perf_tool perf_kmem = {
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.sample = process_sample_event,
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.comm = perf_event__process_comm,
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.ordered_samples = true,
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};
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static double fragmentation(unsigned long n_req, unsigned long n_alloc)
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@ -497,13 +485,10 @@ static int __cmd_kmem(void)
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int err = -EINVAL;
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struct perf_session *session;
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session = perf_session__new(input_name, O_RDONLY, 0, false,
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&perf_kmem.tool);
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session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem);
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if (session == NULL)
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return -ENOMEM;
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perf_kmem.session = session;
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if (perf_session__create_kernel_maps(session) < 0)
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goto out_delete;
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@ -511,7 +496,7 @@ static int __cmd_kmem(void)
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goto out_delete;
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setup_pager();
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err = perf_session__process_events(session, &perf_kmem.tool);
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err = perf_session__process_events(session, &perf_kmem);
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if (err != 0)
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goto out_delete;
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sort_result();
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@ -1,6 +1,7 @@
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#include "builtin.h"
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#include "perf.h"
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#include "util/evsel.h"
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#include "util/util.h"
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#include "util/cache.h"
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#include "util/symbol.h"
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@ -718,14 +719,10 @@ process_lock_release_event(void *data,
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trace_handler->release_event(&release_event, event, cpu, timestamp, thread);
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}
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static void
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process_raw_event(void *data, int cpu, u64 timestamp, struct thread *thread)
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static void process_raw_event(struct perf_evsel *evsel, void *data, int cpu,
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u64 timestamp, struct thread *thread)
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{
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struct event_format *event;
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int type;
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type = trace_parse_common_type(session->pevent, data);
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event = pevent_find_event(session->pevent, type);
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struct event_format *event = evsel->tp_format;
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if (!strcmp(event->name, "lock_acquire"))
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process_lock_acquire_event(data, event, cpu, timestamp, thread);
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@ -849,7 +846,7 @@ static void dump_info(void)
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static int process_sample_event(struct perf_tool *tool __used,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel __used,
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struct perf_evsel *evsel,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine, sample->tid);
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@ -860,7 +857,7 @@ static int process_sample_event(struct perf_tool *tool __used,
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return -1;
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}
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process_raw_event(sample->raw_data, sample->cpu, sample->time, thread);
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process_raw_event(evsel, sample->raw_data, sample->cpu, sample->time, thread);
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return 0;
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}
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@ -43,11 +43,6 @@ static u64 sleep_measurement_overhead;
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static unsigned long nr_tasks;
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struct perf_sched {
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struct perf_tool tool;
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struct perf_session *session;
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};
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struct sched_atom;
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struct task_desc {
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@ -1596,14 +1591,12 @@ typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event_format *
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struct machine *machine,
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struct thread *thread);
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static int perf_sched__process_tracepoint_sample(struct perf_tool *tool,
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static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __used,
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union perf_event *event __used,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine)
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{
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struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
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struct pevent *pevent = sched->session->pevent;
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struct thread *thread = machine__findnew_thread(machine, sample->pid);
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if (thread == NULL) {
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@ -1617,25 +1610,18 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool,
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if (evsel->handler.func != NULL) {
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tracepoint_handler f = evsel->handler.func;
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if (evsel->handler.data == NULL)
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evsel->handler.data = pevent_find_event(pevent,
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evsel->attr.config);
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f(tool, evsel->handler.data, sample, machine, thread);
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f(tool, evsel->tp_format, sample, machine, thread);
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}
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return 0;
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}
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static struct perf_sched perf_sched = {
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.tool = {
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.sample = perf_sched__process_tracepoint_sample,
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.comm = perf_event__process_comm,
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.lost = perf_event__process_lost,
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.fork = perf_event__process_task,
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.ordered_samples = true,
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},
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static struct perf_tool perf_sched = {
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.sample = perf_sched__process_tracepoint_sample,
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.comm = perf_event__process_comm,
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.lost = perf_event__process_lost,
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.fork = perf_event__process_task,
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.ordered_samples = true,
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};
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static void read_events(bool destroy, struct perf_session **psession)
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@ -1652,18 +1638,15 @@ static void read_events(bool destroy, struct perf_session **psession)
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};
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struct perf_session *session;
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session = perf_session__new(input_name, O_RDONLY, 0, false,
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&perf_sched.tool);
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session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_sched);
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if (session == NULL)
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die("No Memory");
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perf_sched.session = session;
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err = perf_session__set_tracepoints_handlers(session, handlers);
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assert(err == 0);
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if (perf_session__has_traces(session, "record -R")) {
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err = perf_session__process_events(session, &perf_sched.tool);
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err = perf_session__process_events(session, &perf_sched);
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if (err)
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die("Failed to process events, error %d", err);
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@ -262,14 +262,11 @@ static int perf_session__check_output_opt(struct perf_session *session)
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return 0;
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}
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static void print_sample_start(struct pevent *pevent,
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struct perf_sample *sample,
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static void print_sample_start(struct perf_sample *sample,
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struct thread *thread,
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struct perf_evsel *evsel)
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{
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int type;
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struct perf_event_attr *attr = &evsel->attr;
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struct event_format *event;
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const char *evname = NULL;
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unsigned long secs;
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unsigned long usecs;
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@ -307,20 +304,7 @@ static void print_sample_start(struct pevent *pevent,
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}
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if (PRINT_FIELD(EVNAME)) {
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if (attr->type == PERF_TYPE_TRACEPOINT) {
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/*
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* XXX Do we really need this here?
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* perf_evlist__set_tracepoint_names should have done
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* this already
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*/
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type = trace_parse_common_type(pevent,
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sample->raw_data);
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event = pevent_find_event(pevent, type);
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if (event)
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evname = event->name;
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} else
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evname = perf_evsel__name(evsel);
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evname = perf_evsel__name(evsel);
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printf("%s: ", evname ? evname : "[unknown]");
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}
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}
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@ -416,7 +400,7 @@ static void print_sample_bts(union perf_event *event,
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}
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static void process_event(union perf_event *event __unused,
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struct pevent *pevent,
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struct pevent *pevent __unused,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine,
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@ -427,7 +411,7 @@ static void process_event(union perf_event *event __unused,
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if (output[attr->type].fields == 0)
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return;
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print_sample_start(pevent, sample, thread, evsel);
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print_sample_start(sample, thread, evsel);
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if (is_bts_event(attr)) {
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print_sample_bts(event, sample, evsel, machine, thread);
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@ -435,9 +419,8 @@ static void process_event(union perf_event *event __unused,
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}
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if (PRINT_FIELD(TRACE))
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print_trace_event(pevent, sample->cpu, sample->raw_data,
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sample->raw_size);
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event_format__print(evsel->tp_format, sample->cpu,
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sample->raw_data, sample->raw_size);
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if (PRINT_FIELD(ADDR))
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print_sample_addr(event, sample, machine, thread, attr);
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@ -56,6 +56,7 @@ struct perf_evsel {
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int ids;
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struct hists hists;
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char *name;
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struct event_format *tp_format;
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union {
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void *priv;
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off_t id_offset;
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@ -2123,6 +2123,7 @@ static int perf_evsel__set_tracepoint_name(struct perf_evsel *evsel,
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if (event->name == NULL)
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return -1;
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evsel->tp_format = event;
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return 0;
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}
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|
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@ -237,16 +237,16 @@ static void define_event_symbols(struct event_format *event,
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define_event_symbols(event, ev_name, args->next);
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}
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static inline
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struct event_format *find_cache_event(struct pevent *pevent, int type)
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static inline struct event_format *find_cache_event(struct perf_evsel *evsel)
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{
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static char ev_name[256];
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struct event_format *event;
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int type = evsel->attr.config;
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if (events[type])
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return events[type];
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events[type] = event = pevent_find_event(pevent, type);
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events[type] = event = evsel->tp_format;
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if (!event)
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return NULL;
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@ -269,7 +269,6 @@ static void perl_process_tracepoint(union perf_event *perf_event __unused,
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unsigned long long val;
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unsigned long s, ns;
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struct event_format *event;
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int type;
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int pid;
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int cpu = sample->cpu;
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void *data = sample->raw_data;
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|
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@ -281,11 +280,9 @@ static void perl_process_tracepoint(union perf_event *perf_event __unused,
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if (evsel->attr.type != PERF_TYPE_TRACEPOINT)
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return;
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type = trace_parse_common_type(pevent, data);
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event = find_cache_event(pevent, type);
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event = find_cache_event(evsel);
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if (!event)
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die("ug! no event found for type %d", type);
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die("ug! no event found for type %d", evsel->attr.config);
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|
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pid = trace_parse_common_pid(pevent, data);
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|
|
|
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|
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@ -27,6 +27,7 @@
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#include <errno.h>
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|
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#include "../../perf.h"
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#include "../evsel.h"
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#include "../util.h"
|
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#include "../event.h"
|
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#include "../thread.h"
|
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|
|
@ -194,16 +195,21 @@ static void define_event_symbols(struct event_format *event,
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define_event_symbols(event, ev_name, args->next);
|
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}
|
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|
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static inline
|
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struct event_format *find_cache_event(struct pevent *pevent, int type)
|
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static inline struct event_format *find_cache_event(struct perf_evsel *evsel)
|
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{
|
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static char ev_name[256];
|
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struct event_format *event;
|
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int type = evsel->attr.config;
|
||||
|
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/*
|
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* XXX: Do we really need to cache this since now we have evsel->tp_format
|
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* cached already? Need to re-read this "cache" routine that as well calls
|
||||
* define_event_symbols() :-\
|
||||
*/
|
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if (events[type])
|
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return events[type];
|
||||
|
||||
events[type] = event = pevent_find_event(pevent, type);
|
||||
events[type] = event = evsel->tp_format;
|
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if (!event)
|
||||
return NULL;
|
||||
|
||||
|
|
@ -217,7 +223,7 @@ struct event_format *find_cache_event(struct pevent *pevent, int type)
|
|||
static void python_process_event(union perf_event *perf_event __unused,
|
||||
struct pevent *pevent,
|
||||
struct perf_sample *sample,
|
||||
struct perf_evsel *evsel __unused,
|
||||
struct perf_evsel *evsel,
|
||||
struct machine *machine __unused,
|
||||
struct thread *thread)
|
||||
{
|
||||
|
|
@ -228,7 +234,6 @@ static void python_process_event(union perf_event *perf_event __unused,
|
|||
unsigned long s, ns;
|
||||
struct event_format *event;
|
||||
unsigned n = 0;
|
||||
int type;
|
||||
int pid;
|
||||
int cpu = sample->cpu;
|
||||
void *data = sample->raw_data;
|
||||
|
|
@ -239,11 +244,9 @@ static void python_process_event(union perf_event *perf_event __unused,
|
|||
if (!t)
|
||||
Py_FatalError("couldn't create Python tuple");
|
||||
|
||||
type = trace_parse_common_type(pevent, data);
|
||||
|
||||
event = find_cache_event(pevent, type);
|
||||
event = find_cache_event(evsel);
|
||||
if (!event)
|
||||
die("ug! no event found for type %d", type);
|
||||
die("ug! no event found for type %d", (int)evsel->attr.config);
|
||||
|
||||
pid = trace_parse_common_pid(pevent, data);
|
||||
|
||||
|
|
|
|||
|
|
@ -167,20 +167,11 @@ unsigned long long read_size(struct pevent *pevent, void *ptr, int size)
|
|||
return pevent_read_number(pevent, ptr, size);
|
||||
}
|
||||
|
||||
void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
|
||||
void event_format__print(struct event_format *event,
|
||||
int cpu, void *data, int size)
|
||||
{
|
||||
struct event_format *event;
|
||||
struct pevent_record record;
|
||||
struct trace_seq s;
|
||||
int type;
|
||||
|
||||
type = trace_parse_common_type(pevent, data);
|
||||
|
||||
event = pevent_find_event(pevent, type);
|
||||
if (!event) {
|
||||
warning("ug! no event found for type %d", type);
|
||||
return;
|
||||
}
|
||||
|
||||
memset(&record, 0, sizeof(record));
|
||||
record.cpu = cpu;
|
||||
|
|
@ -192,6 +183,19 @@ void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
|
|||
trace_seq_do_printf(&s);
|
||||
}
|
||||
|
||||
void print_trace_event(struct pevent *pevent, int cpu, void *data, int size)
|
||||
{
|
||||
int type = trace_parse_common_type(pevent, data);
|
||||
struct event_format *event = pevent_find_event(pevent, type);
|
||||
|
||||
if (!event) {
|
||||
warning("ug! no event found for type %d", type);
|
||||
return;
|
||||
}
|
||||
|
||||
event_format__print(event, cpu, data, size);
|
||||
}
|
||||
|
||||
void print_event(struct pevent *pevent, int cpu, void *data, int size,
|
||||
unsigned long long nsecs, char *comm)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -32,6 +32,8 @@ int bigendian(void);
|
|||
|
||||
struct pevent *read_trace_init(int file_bigendian, int host_bigendian);
|
||||
void print_trace_event(struct pevent *pevent, int cpu, void *data, int size);
|
||||
void event_format__print(struct event_format *event,
|
||||
int cpu, void *data, int size);
|
||||
|
||||
void print_event(struct pevent *pevent, int cpu, void *data, int size,
|
||||
unsigned long long nsecs, char *comm);
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче