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perf tests: Add map groups sharing with thread object test

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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>
This commit is contained in:
Jiri Olsa 2014-03-17 14:39:00 +01:00
parent cddcef6077
commit fabf012382
4 changed files with 96 additions and 0 deletions
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1
tools/perf/Makefile.perf
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@ -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

4
tools/perf/tests/builtin-test.c
View File

@ -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,
},

1
tools/perf/tests/tests.h
View File

@ -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

90
tools/perf/tests/thread-mg-share.c Normal file
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@ -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;
}