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https://github.com/torvalds/linux
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81f17c90f1
This way we'll be able to pass more test specific parameters without having to change this function signature. Will be used by the upcoming 'shell tests', shell scripts that will call perf tools and check if they work as expected, comparing its effects on the system (think 'perf probe foo') the output produced, etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-wq250w7j1opbzyiynozuajbl@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
#include "tests.h"
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#include "machine.h"
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#include "thread.h"
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#include "map.h"
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#include "debug.h"
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int test__thread_mg_share(struct test *test __maybe_unused, int subtest __maybe_unused)
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{
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struct machines machines;
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struct machine *machine;
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/* thread group */
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struct thread *leader;
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struct thread *t1, *t2, *t3;
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struct map_groups *mg;
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/* other process */
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struct thread *other, *other_leader;
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struct map_groups *other_mg;
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/*
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* This test create 2 processes abstractions (struct thread)
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* with several threads and checks they properly share and
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* maintain map groups info (struct map_groups).
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*
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* thread group (pid: 0, tids: 0, 1, 2, 3)
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* other group (pid: 4, tids: 4, 5)
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*/
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machines__init(&machines);
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machine = &machines.host;
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/* create process with 4 threads */
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leader = machine__findnew_thread(machine, 0, 0);
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t1 = machine__findnew_thread(machine, 0, 1);
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t2 = machine__findnew_thread(machine, 0, 2);
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t3 = machine__findnew_thread(machine, 0, 3);
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/* and create 1 separated process, without thread leader */
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other = machine__findnew_thread(machine, 4, 5);
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TEST_ASSERT_VAL("failed to create threads",
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leader && t1 && t2 && t3 && other);
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mg = leader->mg;
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&mg->refcnt), 4);
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/* test the map groups pointer is shared */
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TEST_ASSERT_VAL("map groups don't match", mg == t1->mg);
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TEST_ASSERT_VAL("map groups don't match", mg == t2->mg);
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TEST_ASSERT_VAL("map groups don't match", mg == t3->mg);
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/*
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* Verify the other leader was created by previous call.
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* It should have shared map groups with no change in
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* refcnt.
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*/
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other_leader = machine__find_thread(machine, 4, 4);
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TEST_ASSERT_VAL("failed to find other leader", other_leader);
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/*
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* Ok, now that all the rbtree related operations were done,
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* lets remove all of them from there so that we can do the
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* refcounting tests.
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*/
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machine__remove_thread(machine, leader);
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machine__remove_thread(machine, t1);
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machine__remove_thread(machine, t2);
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machine__remove_thread(machine, t3);
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machine__remove_thread(machine, other);
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machine__remove_thread(machine, other_leader);
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other_mg = other->mg;
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_mg->refcnt), 2);
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TEST_ASSERT_VAL("map groups don't match", other_mg == other_leader->mg);
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/* release thread group */
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thread__put(leader);
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&mg->refcnt), 3);
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thread__put(t1);
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&mg->refcnt), 2);
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thread__put(t2);
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&mg->refcnt), 1);
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thread__put(t3);
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/* release other group */
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thread__put(other_leader);
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TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_mg->refcnt), 1);
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thread__put(other);
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machines__exit(&machines);
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return 0;
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}
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