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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-08-07 12:58:03 (GMT) |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-08-08 02:43:37 (GMT) |
commit | fcf65bf149afa91b875ffde4455967cb63ee0be9 (patch) | |
tree | 9b6137e60d4142b1aa00f9e20860bdd8374035d3 /tools/perf/builtin-kmem.c | |
parent | 8b6ee4c5d48d93527dcf6e36c51cbb7703d7fffb (diff) | |
download | linux-fcf65bf149afa91b875ffde4455967cb63ee0be9.tar.xz |
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>
Diffstat (limited to 'tools/perf/builtin-kmem.c')
-rw-r--r-- | tools/perf/builtin-kmem.c | 39 |
1 files changed, 12 insertions, 27 deletions
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index ce35015..ffb93f42 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -1,6 +1,7 @@ #include "builtin.h" #include "perf.h" +#include "util/evsel.h" #include "util/util.h" #include "util/cache.h" #include "util/symbol.h" @@ -57,11 +58,6 @@ static unsigned long nr_allocs, nr_cross_allocs; #define PATH_SYS_NODE "/sys/devices/system/node" -struct perf_kmem { - struct perf_tool tool; - struct perf_session *session; -}; - static void init_cpunode_map(void) { FILE *fp; @@ -283,16 +279,10 @@ static void process_free_event(void *data, s_alloc->alloc_cpu = -1; } -static void process_raw_event(struct perf_tool *tool, - union perf_event *raw_event __used, void *data, +static void process_raw_event(struct perf_evsel *evsel, void *data, int cpu, u64 timestamp, struct thread *thread) { - struct perf_kmem *kmem = container_of(tool, struct perf_kmem, tool); - struct event_format *event; - int type; - - type = trace_parse_common_type(kmem->session->pevent, data); - event = pevent_find_event(kmem->session->pevent, type); + struct event_format *event = evsel->tp_format; if (!strcmp(event->name, "kmalloc") || !strcmp(event->name, "kmem_cache_alloc")) { @@ -313,10 +303,10 @@ static void process_raw_event(struct perf_tool *tool, } } -static int process_sample_event(struct perf_tool *tool, +static int process_sample_event(struct perf_tool *tool __used, union perf_event *event, struct perf_sample *sample, - struct perf_evsel *evsel __used, + struct perf_evsel *evsel, struct machine *machine) { struct thread *thread = machine__findnew_thread(machine, event->ip.pid); @@ -329,18 +319,16 @@ static int process_sample_event(struct perf_tool *tool, dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); - process_raw_event(tool, event, sample->raw_data, sample->cpu, + process_raw_event(evsel, sample->raw_data, sample->cpu, sample->time, thread); return 0; } -static struct perf_kmem perf_kmem = { - .tool = { - .sample = process_sample_event, - .comm = perf_event__process_comm, - .ordered_samples = true, - }, +static struct perf_tool perf_kmem = { + .sample = process_sample_event, + .comm = perf_event__process_comm, + .ordered_samples = true, }; static double fragmentation(unsigned long n_req, unsigned long n_alloc) @@ -497,13 +485,10 @@ static int __cmd_kmem(void) int err = -EINVAL; struct perf_session *session; - session = perf_session__new(input_name, O_RDONLY, 0, false, - &perf_kmem.tool); + session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem); if (session == NULL) return -ENOMEM; - perf_kmem.session = session; - if (perf_session__create_kernel_maps(session) < 0) goto out_delete; @@ -511,7 +496,7 @@ static int __cmd_kmem(void) goto out_delete; setup_pager(); - err = perf_session__process_events(session, &perf_kmem.tool); + err = perf_session__process_events(session, &perf_kmem); if (err != 0) goto out_delete; sort_result(); |