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Commit 67fda0f3 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf machine: Add threads__set_last_match function 



Separating threads::last_match cache set into separate
threads__set_last_match function.  This will be useful in following
patch.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Lukasz Odzioba <lukasz.odzioba@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20180719143345.12963-3-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f8b2ebb5

tools/perf/util/machine.c

+9 −3
Original line number Diff line number Diff line
@@ -431,6 +431,12 @@ threads__get_last_match(struct threads *threads, struct machine *machine, 
	return NULL;

}



static void

threads__set_last_match(struct threads *threads, struct thread *th)

{

	threads->last_match = th;

}



/*

 * Caller must eventually drop thread->refcnt returned with a successful

 * lookup/new thread inserted.
@@ -453,7 +459,7 @@ static struct thread *____machine__findnew_thread(struct machine *machine, 
		th = rb_entry(parent, struct thread, rb_node);



		if (th->tid == tid) {

			threads->last_match = th;

			threads__set_last_match(threads, th);

			machine__update_thread_pid(machine, th, pid);

			return thread__get(th);

		}
@@ -490,7 +496,7 @@ static struct thread *____machine__findnew_thread(struct machine *machine, 
		 * It is now in the rbtree, get a ref

		 */

		thread__get(th);

		threads->last_match = th;

		threads__set_last_match(threads, th);

		++threads->nr;

	}
@@ -1648,7 +1654,7 @@ static void __machine__remove_thread(struct machine *machine, struct thread *th, 
	struct threads *threads = machine__threads(machine, th->tid);



	if (threads->last_match == th)

		threads->last_match = NULL;

		threads__set_last_match(threads, NULL);



	BUG_ON(refcount_read(&th->refcnt) == 0);

	if (lock)