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author | Jiri Olsa <jolsa@kernel.org> | 2014-03-17 17:39:00 +0400 |
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committer | Jiri Olsa <jolsa@kernel.org> | 2014-04-28 15:43:40 +0400 |
commit | fabf01238289e9ae009499594fc54642f5802a24 (patch) | |
tree | fbfa52100f795fd9f048d7c08050f4f733bd7fa1 /tools/perf/tests/thread-mg-share.c | |
parent | cddcef607782966f1601808c17fe9c4c5f79f9f4 (diff) | |
download | linux-fabf01238289e9ae009499594fc54642f5802a24.tar.xz |
perf tests: Add map groups sharing with thread object test
This test create 2 processes abstractions, with several threads
and checks they properly share and maintain map groups info.
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1397490723-1992-6-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/tests/thread-mg-share.c')
-rw-r--r-- | tools/perf/tests/thread-mg-share.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/tools/perf/tests/thread-mg-share.c b/tools/perf/tests/thread-mg-share.c new file mode 100644 index 000000000000..2b2e0dbe114f --- /dev/null +++ b/tools/perf/tests/thread-mg-share.c @@ -0,0 +1,90 @@ +#include "tests.h" +#include "machine.h" +#include "thread.h" +#include "map.h" + +int test__thread_mg_share(void) +{ + struct machines machines; + struct machine *machine; + + /* thread group */ + struct thread *leader; + struct thread *t1, *t2, *t3; + struct map_groups *mg; + + /* other process */ + struct thread *other, *other_leader; + struct map_groups *other_mg; + + /* + * This test create 2 processes abstractions (struct thread) + * with several threads and checks they properly share and + * maintain map groups info (struct map_groups). + * + * 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); + + mg = leader->mg; + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 4); + + /* test the map groups pointer is shared */ + TEST_ASSERT_VAL("map groups don't match", mg == t1->mg); + TEST_ASSERT_VAL("map groups don't match", mg == t2->mg); + TEST_ASSERT_VAL("map groups don't match", mg == t3->mg); + + /* + * Verify the other leader was created by previous call. + * It should have shared map groups with no change in + * refcnt. + */ + other_leader = machine__find_thread(machine, 4, 4); + TEST_ASSERT_VAL("failed to find other leader", other_leader); + + other_mg = other->mg; + TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 2); + + TEST_ASSERT_VAL("map groups don't match", other_mg == other_leader->mg); + + /* release thread group */ + thread__delete(leader); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 3); + + thread__delete(t1); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 2); + + thread__delete(t2); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 1); + + thread__delete(t3); + + /* release other group */ + thread__delete(other_leader); + TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 1); + + thread__delete(other); + + /* + * Cannot call machine__delete_threads(machine) now, + * because we've already released all the threads. + */ + + machines__exit(&machines); + return 0; +} |