Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 6/6] perf tests: Add map groups sharing with thread object test | Date | Tue, 18 Mar 2014 15:46:56 +0100 |
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This test create 2 processes abstractions, with several threads and checks they properly share and maintain map groups info.
Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> --- tools/perf/Makefile.perf | 1 + tools/perf/tests/builtin-test.c | 4 ++ tools/perf/tests/tests.h | 1 + tools/perf/tests/thread-mg-share.c | 110 +++++++++++++++++++++++++++++++++++++ 4 files changed, 116 insertions(+) create mode 100644 tools/perf/tests/thread-mg-share.c
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 667e85a..ffa6cac 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -415,6 +415,7 @@ LIB_OBJS += $(OUTPUT)tests/dwarf-unwind.o endif endif LIB_OBJS += $(OUTPUT)tests/mmap-thread-lookup.o +LIB_OBJS += $(OUTPUT)tests/thread-mg-share.o BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o BUILTIN_OBJS += $(OUTPUT)builtin-bench.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index d947d1a..a1145d1 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -128,6 +128,10 @@ static struct test { .func = test__mmap_thread_lookup, }, { + .desc = "Test thread mg sharing", + .func = test__thread_mg_share, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 6db764c..5ed3bd5 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -42,6 +42,7 @@ int test__keep_tracking(void); int test__parse_no_sample_id_all(void); int test__dwarf_unwind(void); int test__mmap_thread_lookup(void); +int test__thread_mg_share(void); #if defined(__x86_64__) || defined(__i386__) #ifdef HAVE_DWARF_UNWIND_SUPPORT diff --git a/tools/perf/tests/thread-mg-share.c b/tools/perf/tests/thread-mg-share.c new file mode 100644 index 0000000..43cbd8b --- /dev/null +++ b/tools/perf/tests/thread-mg-share.c @@ -0,0 +1,110 @@ +#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; + struct map_groups *mg1, *mg2, *mg3; + + /* other process */ + struct thread *other, *other_leader; + struct map_groups *mg_other, *mg_other_leader; + + /* + * 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); + + /* requests map groups for each thread in the group */ + mg = thread__map_groups_get(leader); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 1); + + mg1 = thread__map_groups_get(t1); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 2); + + mg2 = thread__map_groups_get(t2); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 3); + + mg3 = thread__map_groups_get(t3); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 4); + + /* test the map groups pointer is shared */ + TEST_ASSERT_VAL("map groups don't match", mg == mg1); + TEST_ASSERT_VAL("map groups don't match", mg == mg2); + TEST_ASSERT_VAL("map groups don't match", mg == mg3); + + /* + * Now get map groups for other thread (not thread leader) + * Its refcnt should be 2 because of the thread leader being + * included. + */ + mg_other = thread__map_groups_get(other); + TEST_ASSERT_VAL("wrong refcnt", mg_other->refcnt == 2); + + /* + * 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); + + mg_other_leader = thread__map_groups_get(other_leader); + TEST_ASSERT_VAL("map groups don't match", mg_other_leader == mg_other); + TEST_ASSERT_VAL("wrong refcnt", mg_other_leader->refcnt == 2); + + /* release thread group */ + thread__map_groups_put(leader); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 3); + TEST_ASSERT_VAL("wrong mg", leader->mg == NULL); + + thread__map_groups_put(t1); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 2); + TEST_ASSERT_VAL("wrong mg", t1->mg == NULL); + + thread__map_groups_put(t2); + TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 1); + TEST_ASSERT_VAL("wrong mg", t2->mg == NULL); + + thread__map_groups_put(t3); + TEST_ASSERT_VAL("wrong mg", t3->mg == NULL); + + /* release other group */ + thread__map_groups_put(other_leader); + TEST_ASSERT_VAL("wrong refcnt", mg_other_leader->refcnt == 1); + TEST_ASSERT_VAL("wrong mg", other_leader->mg == NULL); + + thread__map_groups_put(other); + TEST_ASSERT_VAL("wrong mg", other->mg == NULL); + + machine__delete_threads(machine); + machines__exit(&machines); + return 0; +} -- 1.8.3.1
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