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364fed3513
The refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Kook <keescook@chromium.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Windsor <dwindsor@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: alsa-devel@alsa-project.org Link: http://lkml.kernel.org/r/1487691303-31858-10-git-send-email-elena.reshetova@intel.com [ Did missing tests/thread-map.c conversion ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/prctl.h>
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#include "tests.h"
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#include "thread_map.h"
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#include "debug.h"
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#define NAME (const char *) "perf"
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#define NAMEUL (unsigned long) NAME
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int test__thread_map(int subtest __maybe_unused)
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{
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struct thread_map *map;
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TEST_ASSERT_VAL("failed to set process name",
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!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
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/* test map on current pid */
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map = thread_map__new_by_pid(getpid());
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TEST_ASSERT_VAL("failed to alloc map", map);
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thread_map__read_comms(map);
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TEST_ASSERT_VAL("wrong nr", map->nr == 1);
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TEST_ASSERT_VAL("wrong pid",
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thread_map__pid(map, 0) == getpid());
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TEST_ASSERT_VAL("wrong comm",
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thread_map__comm(map, 0) &&
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!strcmp(thread_map__comm(map, 0), NAME));
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TEST_ASSERT_VAL("wrong refcnt",
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refcount_read(&map->refcnt) == 1);
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thread_map__put(map);
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/* test dummy pid */
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map = thread_map__new_dummy();
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TEST_ASSERT_VAL("failed to alloc map", map);
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thread_map__read_comms(map);
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TEST_ASSERT_VAL("wrong nr", map->nr == 1);
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TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
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TEST_ASSERT_VAL("wrong comm",
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thread_map__comm(map, 0) &&
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!strcmp(thread_map__comm(map, 0), "dummy"));
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TEST_ASSERT_VAL("wrong refcnt",
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refcount_read(&map->refcnt) == 1);
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thread_map__put(map);
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return 0;
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}
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static int process_event(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct thread_map_event *map = &event->thread_map;
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struct thread_map *threads;
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TEST_ASSERT_VAL("wrong nr", map->nr == 1);
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TEST_ASSERT_VAL("wrong pid", map->entries[0].pid == (u64) getpid());
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TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
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threads = thread_map__new_event(&event->thread_map);
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TEST_ASSERT_VAL("failed to alloc map", threads);
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TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
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TEST_ASSERT_VAL("wrong pid",
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thread_map__pid(threads, 0) == getpid());
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TEST_ASSERT_VAL("wrong comm",
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thread_map__comm(threads, 0) &&
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!strcmp(thread_map__comm(threads, 0), NAME));
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TEST_ASSERT_VAL("wrong refcnt",
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refcount_read(&threads->refcnt) == 1);
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thread_map__put(threads);
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return 0;
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}
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int test__thread_map_synthesize(int subtest __maybe_unused)
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{
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struct thread_map *threads;
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TEST_ASSERT_VAL("failed to set process name",
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!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
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/* test map on current pid */
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threads = thread_map__new_by_pid(getpid());
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TEST_ASSERT_VAL("failed to alloc map", threads);
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thread_map__read_comms(threads);
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TEST_ASSERT_VAL("failed to synthesize map",
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!perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
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return 0;
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}
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int test__thread_map_remove(int subtest __maybe_unused)
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{
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struct thread_map *threads;
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char *str;
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int i;
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TEST_ASSERT_VAL("failed to allocate map string",
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asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
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threads = thread_map__new_str(str, NULL, 0);
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TEST_ASSERT_VAL("failed to allocate thread_map",
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threads);
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if (verbose > 0)
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thread_map__fprintf(threads, stderr);
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TEST_ASSERT_VAL("failed to remove thread",
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!thread_map__remove(threads, 0));
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TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
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if (verbose > 0)
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thread_map__fprintf(threads, stderr);
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TEST_ASSERT_VAL("failed to remove thread",
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!thread_map__remove(threads, 0));
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TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
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if (verbose > 0)
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thread_map__fprintf(threads, stderr);
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TEST_ASSERT_VAL("failed to not remove thread",
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thread_map__remove(threads, 0));
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for (i = 0; i < threads->nr; i++)
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free(threads->map[i].comm);
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free(threads);
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return 0;
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}
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