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Message-ID: <20220908021141.27134-4-shangxiaojing@huawei.com>
Date: Thu, 8 Sep 2022 10:11:40 +0800
From: Shang XiaoJing <shangxiaojing@...wei.com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
<mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
<jolsa@...nel.org>, <namhyung@...nel.org>,
<linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <shangxiaojing@...wei.com>
Subject: [PATCH 3/4] perf timechart: Add create_pidcomm helper
Wrap repeated code combined with alloc of per_pidcomm in helper function
create_pidcomm.
Signed-off-by: Shang XiaoJing <shangxiaojing@...wei.com>
---
tools/perf/builtin-timechart.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index e2e9ad929baf..667a94d45493 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -215,6 +215,19 @@ static struct per_pid *find_create_pid(struct timechart *tchart, int pid)
return cursor;
}
+static struct per_pidcomm *create_pidcomm(struct per_pid *p)
+{
+ struct per_pidcomm *c;
+
+ c = zalloc(sizeof(*c));
+ if (!c)
+ return NULL;
+ p->current = c;
+ c->next = p->all;
+ p->all = c;
+ return c;
+}
+
static void pid_set_comm(struct timechart *tchart, int pid, char *comm)
{
struct per_pid *p;
@@ -233,12 +246,9 @@ static void pid_set_comm(struct timechart *tchart, int pid, char *comm)
}
c = c->next;
}
- c = zalloc(sizeof(*c));
+ c = create_pidcomm(p);
assert(c != NULL);
c->comm = strdup(comm);
- p->current = c;
- c->next = p->all;
- p->all = c;
}
static void pid_fork(struct timechart *tchart, int pid, int ppid, u64 timestamp)
@@ -277,11 +287,8 @@ static void pid_put_sample(struct timechart *tchart, int pid, int type,
p = find_create_pid(tchart, pid);
c = p->current;
if (!c) {
- c = zalloc(sizeof(*c));
+ c = create_pidcomm(p);
assert(c != NULL);
- p->current = c;
- c->next = p->all;
- p->all = c;
}
sample = zalloc(sizeof(*sample));
@@ -726,12 +733,9 @@ static int pid_begin_io_sample(struct timechart *tchart, int pid, int type,
struct io_sample *prev;
if (!c) {
- c = zalloc(sizeof(*c));
+ c = create_pidcomm(p);
if (!c)
return -ENOMEM;
- p->current = c;
- c->next = p->all;
- p->all = c;
}
prev = c->io_samples;
--
2.17.1
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