mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
6d38267cf9
One more step in merging 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-naxsl3g4ou3fyxb8l8e0pn5e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include "tests.h"
|
|
#include "machine.h"
|
|
#include "thread.h"
|
|
#include "debug.h"
|
|
|
|
int test__thread_maps_share(struct test *test __maybe_unused, int subtest __maybe_unused)
|
|
{
|
|
struct machines machines;
|
|
struct machine *machine;
|
|
|
|
/* thread group */
|
|
struct thread *leader;
|
|
struct thread *t1, *t2, *t3;
|
|
struct maps *maps;
|
|
|
|
/* other process */
|
|
struct thread *other, *other_leader;
|
|
struct maps *other_maps;
|
|
|
|
/*
|
|
* This test create 2 processes abstractions (struct thread)
|
|
* with several threads and checks they properly share and
|
|
* maintain maps info (struct maps).
|
|
*
|
|
* thread group (pid: 0, tids: 0, 1, 2, 3)
|
|
* other group (pid: 4, tids: 4, 5)
|
|
*/
|
|
|
|
machines__init(&machines);
|
|
machine = &machines.host;
|
|
|
|
/* create process with 4 threads */
|
|
leader = machine__findnew_thread(machine, 0, 0);
|
|
t1 = machine__findnew_thread(machine, 0, 1);
|
|
t2 = machine__findnew_thread(machine, 0, 2);
|
|
t3 = machine__findnew_thread(machine, 0, 3);
|
|
|
|
/* and create 1 separated process, without thread leader */
|
|
other = machine__findnew_thread(machine, 4, 5);
|
|
|
|
TEST_ASSERT_VAL("failed to create threads",
|
|
leader && t1 && t2 && t3 && other);
|
|
|
|
maps = leader->maps;
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 4);
|
|
|
|
/* test the maps pointer is shared */
|
|
TEST_ASSERT_VAL("maps don't match", maps == t1->maps);
|
|
TEST_ASSERT_VAL("maps don't match", maps == t2->maps);
|
|
TEST_ASSERT_VAL("maps don't match", maps == t3->maps);
|
|
|
|
/*
|
|
* Verify the other leader was created by previous call.
|
|
* It should have shared maps with no change in
|
|
* refcnt.
|
|
*/
|
|
other_leader = machine__find_thread(machine, 4, 4);
|
|
TEST_ASSERT_VAL("failed to find other leader", other_leader);
|
|
|
|
/*
|
|
* Ok, now that all the rbtree related operations were done,
|
|
* lets remove all of them from there so that we can do the
|
|
* refcounting tests.
|
|
*/
|
|
machine__remove_thread(machine, leader);
|
|
machine__remove_thread(machine, t1);
|
|
machine__remove_thread(machine, t2);
|
|
machine__remove_thread(machine, t3);
|
|
machine__remove_thread(machine, other);
|
|
machine__remove_thread(machine, other_leader);
|
|
|
|
other_maps = other->maps;
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 2);
|
|
|
|
TEST_ASSERT_VAL("maps don't match", other_maps == other_leader->maps);
|
|
|
|
/* release thread group */
|
|
thread__put(leader);
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 3);
|
|
|
|
thread__put(t1);
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 2);
|
|
|
|
thread__put(t2);
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 1);
|
|
|
|
thread__put(t3);
|
|
|
|
/* release other group */
|
|
thread__put(other_leader);
|
|
TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 1);
|
|
|
|
thread__put(other);
|
|
|
|
machines__exit(&machines);
|
|
return 0;
|
|
}
|