Commit 70c57efb authored by David Ahern's avatar David Ahern Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Save parent pid in thread struct 



Information is available, so why not save it in case some command wants
to use it.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1369543631-5106-1-git-send-email-dsahern@gmail.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 45528f7c

tools/perf/util/thread.c

+4 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ struct thread *thread__new(pid_t pid) 
	if (self != NULL) {

		map_groups__init(&self->mg);

		self->pid = pid;

		self->ppid = -1;

		self->comm = malloc(32);

		if (self->comm)

			snprintf(self->comm, 32, ":%d", self->pid);
@@ -82,5 +83,8 @@ int thread__fork(struct thread *self, struct thread *parent) 
	for (i = 0; i < MAP__NR_TYPES; ++i)

		if (map_groups__clone(&self->mg, &parent->mg, i) < 0)

			return -ENOMEM;



	self->ppid = parent->pid;



	return 0;

}

tools/perf/util/thread.h

+1 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ struct thread { 
	};

	struct map_groups	mg;

	pid_t			pid;

	pid_t			ppid;

	char			shortname[3];

	bool			comm_set;

	char			*comm;

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