Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fabf0123 authored by Jiri Olsa's avatar Jiri Olsa
Browse files

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: default avatarNamhyung 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: default avatarJiri Olsa <jolsa@kernel.org>
parent cddcef60

tools/perf/Makefile.perf

+1 −0
Original line number Diff line number Diff line
@@ -417,6 +417,7 @@ 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

tools/perf/tests/builtin-test.c

+4 −0
Original line number Diff line number Diff line
@@ -131,6 +131,10 @@ static struct test { 
		.desc = "Test mmap thread lookup",

		.func = test__mmap_thread_lookup,

	},

	{

		.desc = "Test thread mg sharing",

		.func = test__thread_mg_share,

	},

	{

		.func = NULL,

	},

tools/perf/tests/tests.h

+1 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ int test__parse_no_sample_id_all(void); 
int test__dwarf_unwind(void);

int test__hists_filter(void);

int test__mmap_thread_lookup(void);

int test__thread_mg_share(void);



#if defined(__x86_64__) || defined(__i386__)

#ifdef HAVE_DWARF_UNWIND_SUPPORT

tools/perf/tests/thread-mg-share.c

0 → 100644
+90 −0
Original line number Diff line number Diff line 
#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;

}