cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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thread-map.c (4272B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <stdlib.h>
      3#include <string.h>
      4#include <sys/types.h>
      5#include <unistd.h>
      6#include <sys/prctl.h>
      7#include "tests.h"
      8#include "thread_map.h"
      9#include "debug.h"
     10#include "event.h"
     11#include "util/synthetic-events.h"
     12#include <linux/zalloc.h>
     13#include <perf/event.h>
     14
     15struct perf_sample;
     16struct perf_tool;
     17struct machine;
     18
     19#define NAME	(const char *) "perf"
     20#define NAMEUL	(unsigned long) NAME
     21
     22static int test__thread_map(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
     23{
     24	struct perf_thread_map *map;
     25
     26	TEST_ASSERT_VAL("failed to set process name",
     27			!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
     28
     29	/* test map on current pid */
     30	map = thread_map__new_by_pid(getpid());
     31	TEST_ASSERT_VAL("failed to alloc map", map);
     32
     33	thread_map__read_comms(map);
     34
     35	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
     36	TEST_ASSERT_VAL("wrong pid",
     37			perf_thread_map__pid(map, 0) == getpid());
     38	TEST_ASSERT_VAL("wrong comm",
     39			perf_thread_map__comm(map, 0) &&
     40			!strcmp(perf_thread_map__comm(map, 0), NAME));
     41	TEST_ASSERT_VAL("wrong refcnt",
     42			refcount_read(&map->refcnt) == 1);
     43	perf_thread_map__put(map);
     44
     45	/* test dummy pid */
     46	map = perf_thread_map__new_dummy();
     47	TEST_ASSERT_VAL("failed to alloc map", map);
     48
     49	thread_map__read_comms(map);
     50
     51	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
     52	TEST_ASSERT_VAL("wrong pid", perf_thread_map__pid(map, 0) == -1);
     53	TEST_ASSERT_VAL("wrong comm",
     54			perf_thread_map__comm(map, 0) &&
     55			!strcmp(perf_thread_map__comm(map, 0), "dummy"));
     56	TEST_ASSERT_VAL("wrong refcnt",
     57			refcount_read(&map->refcnt) == 1);
     58	perf_thread_map__put(map);
     59	return 0;
     60}
     61
     62static int process_event(struct perf_tool *tool __maybe_unused,
     63			 union perf_event *event,
     64			 struct perf_sample *sample __maybe_unused,
     65			 struct machine *machine __maybe_unused)
     66{
     67	struct perf_record_thread_map *map = &event->thread_map;
     68	struct perf_thread_map *threads;
     69
     70	TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
     71	TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
     72	TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
     73
     74	threads = thread_map__new_event(&event->thread_map);
     75	TEST_ASSERT_VAL("failed to alloc map", threads);
     76
     77	TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
     78	TEST_ASSERT_VAL("wrong pid",
     79			perf_thread_map__pid(threads, 0) == getpid());
     80	TEST_ASSERT_VAL("wrong comm",
     81			perf_thread_map__comm(threads, 0) &&
     82			!strcmp(perf_thread_map__comm(threads, 0), NAME));
     83	TEST_ASSERT_VAL("wrong refcnt",
     84			refcount_read(&threads->refcnt) == 1);
     85	perf_thread_map__put(threads);
     86	return 0;
     87}
     88
     89static int test__thread_map_synthesize(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
     90{
     91	struct perf_thread_map *threads;
     92
     93	TEST_ASSERT_VAL("failed to set process name",
     94			!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
     95
     96	/* test map on current pid */
     97	threads = thread_map__new_by_pid(getpid());
     98	TEST_ASSERT_VAL("failed to alloc map", threads);
     99
    100	thread_map__read_comms(threads);
    101
    102	TEST_ASSERT_VAL("failed to synthesize map",
    103		!perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
    104
    105	perf_thread_map__put(threads);
    106	return 0;
    107}
    108
    109static int test__thread_map_remove(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
    110{
    111	struct perf_thread_map *threads;
    112	char *str;
    113
    114	TEST_ASSERT_VAL("failed to allocate map string",
    115			asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
    116
    117	threads = thread_map__new_str(str, NULL, 0, false);
    118	free(str);
    119
    120	TEST_ASSERT_VAL("failed to allocate thread_map",
    121			threads);
    122
    123	if (verbose > 0)
    124		thread_map__fprintf(threads, stderr);
    125
    126	TEST_ASSERT_VAL("failed to remove thread",
    127			!thread_map__remove(threads, 0));
    128
    129	TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
    130
    131	if (verbose > 0)
    132		thread_map__fprintf(threads, stderr);
    133
    134	TEST_ASSERT_VAL("failed to remove thread",
    135			!thread_map__remove(threads, 0));
    136
    137	TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
    138
    139	if (verbose > 0)
    140		thread_map__fprintf(threads, stderr);
    141
    142	TEST_ASSERT_VAL("failed to not remove thread",
    143			thread_map__remove(threads, 0));
    144
    145	perf_thread_map__put(threads);
    146	return 0;
    147}
    148
    149DEFINE_SUITE("Thread map", thread_map);
    150DEFINE_SUITE("Synthesize thread map", thread_map_synthesize);
    151DEFINE_SUITE("Remove thread map", thread_map_remove);