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Message-ID: <tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org>
Date: Wed, 26 Sep 2012 22:27:10 -0700
From: tip-bot for Arnaldo Carvalho de Melo <acme@...hat.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, eranian@...gle.com, paulus@...ba.org,
acme@...hat.com, hpa@...or.com, mingo@...nel.org,
peterz@...radead.org, efault@....de, namhyung@...il.com,
jolsa@...hat.com, fweisbec@...il.com, dsahern@...il.com,
tglx@...utronix.de
Subject: [tip:perf/core] perf kmem:
Use perf_evsel__intval and perf_session__set_tracepoints_handlers
Commit-ID: 0f7d2f1b65e3415854bbe842705f698a3350d7da
Gitweb: http://git.kernel.org/tip/0f7d2f1b65e3415854bbe842705f698a3350d7da
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Mon, 24 Sep 2012 10:46:54 -0300
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 24 Sep 2012 10:52:03 -0300
perf kmem: Use perf_evsel__intval and perf_session__set_tracepoints_handlers
Following the model of 'perf sched':
. raw_field_value searches first on the common fields, that are unused
in this tool
. Using perf_session__set_tracepoints_handlers will save all those
strcmp to find the right handler at sample processing time, do it just
once and get the handler from evsel->handler.func.
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mike Galbraith <efault@....de>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/builtin-kmem.c | 90 ++++++++++++++++++++++----------------------
1 files changed, 45 insertions(+), 45 deletions(-)
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index f5f8a6b..bc912c6 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/evlist.h"
#include "util/evsel.h"
#include "util/util.h"
#include "util/cache.h"
@@ -212,36 +213,38 @@ static int insert_caller_stat(unsigned long call_site,
}
static int perf_evsel__process_alloc_event(struct perf_evsel *evsel,
- struct perf_sample *sample, int node)
+ struct perf_sample *sample)
{
- struct event_format *event = evsel->tp_format;
- void *data = sample->raw_data;
- unsigned long call_site;
- unsigned long ptr;
- int bytes_req, cpu = sample->cpu;
- int bytes_alloc;
- int node1, node2;
-
- ptr = raw_field_value(event, "ptr", data);
- call_site = raw_field_value(event, "call_site", data);
- bytes_req = raw_field_value(event, "bytes_req", data);
- bytes_alloc = raw_field_value(event, "bytes_alloc", data);
-
- if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu) ||
+ unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"),
+ call_site = perf_evsel__intval(evsel, sample, "call_site");
+ int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"),
+ bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc");
+
+ if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) ||
insert_caller_stat(call_site, bytes_req, bytes_alloc))
return -1;
total_requested += bytes_req;
total_allocated += bytes_alloc;
- if (node) {
- node1 = cpunode_map[cpu];
- node2 = raw_field_value(event, "node", data);
+ nr_allocs++;
+ return 0;
+}
+
+static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ int ret = perf_evsel__process_alloc_event(evsel, sample);
+
+ if (!ret) {
+ int node1 = cpunode_map[sample->cpu],
+ node2 = perf_evsel__intval(evsel, sample, "node");
+
if (node1 != node2)
nr_cross_allocs++;
}
- nr_allocs++;
- return 0;
+
+ return ret;
}
static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
@@ -275,8 +278,7 @@ static struct alloc_stat *search_alloc_stat(unsigned long ptr,
static int perf_evsel__process_free_event(struct perf_evsel *evsel,
struct perf_sample *sample)
{
- unsigned long ptr = raw_field_value(evsel->tp_format, "ptr",
- sample->raw_data);
+ unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr");
struct alloc_stat *s_alloc, *s_caller;
s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
@@ -297,28 +299,8 @@ static int perf_evsel__process_free_event(struct perf_evsel *evsel,
return 0;
}
-static int perf_evsel__process_kmem_event(struct perf_evsel *evsel,
- struct perf_sample *sample)
-{
- struct event_format *event = evsel->tp_format;
-
- if (!strcmp(event->name, "kmalloc") ||
- !strcmp(event->name, "kmem_cache_alloc")) {
- return perf_evsel__process_alloc_event(evsel, sample, 0);
- }
-
- if (!strcmp(event->name, "kmalloc_node") ||
- !strcmp(event->name, "kmem_cache_alloc_node")) {
- return perf_evsel__process_alloc_event(evsel, sample, 1);
- }
-
- if (!strcmp(event->name, "kfree") ||
- !strcmp(event->name, "kmem_cache_free")) {
- return perf_evsel__process_free_event(evsel, sample);
- }
-
- return 0;
-}
+typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
+ struct perf_sample *sample);
static int process_sample_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
@@ -336,7 +318,12 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
- return perf_evsel__process_kmem_event(evsel, sample);
+ if (evsel->handler.func != NULL) {
+ tracepoint_handler f = evsel->handler.func;
+ return f(evsel, sample);
+ }
+
+ return 0;
}
static struct perf_tool perf_kmem = {
@@ -498,6 +485,14 @@ static int __cmd_kmem(void)
{
int err = -EINVAL;
struct perf_session *session;
+ const struct perf_evsel_str_handler kmem_tracepoints[] = {
+ { "kmem:kmalloc", perf_evsel__process_alloc_event, },
+ { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, },
+ { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, },
+ { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, },
+ { "kmem:kfree", perf_evsel__process_free_event, },
+ { "kmem:kmem_cache_free", perf_evsel__process_free_event, },
+ };
session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem);
if (session == NULL)
@@ -509,6 +504,11 @@ static int __cmd_kmem(void)
if (!perf_session__has_traces(session, "kmem record"))
goto out_delete;
+ if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) {
+ pr_err("Initializing perf session tracepoint handlers failed\n");
+ return -1;
+ }
+
setup_pager();
err = perf_session__process_events(session, &perf_kmem);
if (err != 0)
--
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