| /linux-6.8/tools/perf/util/ |
| D | thread_map.c | 36 struct perf_thread_map *threads; in thread_map__new_by_pid() local
47 threads = thread_map__alloc(items); in thread_map__new_by_pid()
48 if (threads != NULL) { in thread_map__new_by_pid()
50 perf_thread_map__set_pid(threads, i, atoi(namelist[i]->d_name)); in thread_map__new_by_pid()
51 threads->nr = items; in thread_map__new_by_pid()
52 refcount_set(&threads->refcnt, 1); in thread_map__new_by_pid()
59 return threads; in thread_map__new_by_pid()
64 struct perf_thread_map *threads = thread_map__alloc(1); in thread_map__new_by_tid() local
66 if (threads != NULL) { in thread_map__new_by_tid()
67 perf_thread_map__set_pid(threads, 0, tid); in thread_map__new_by_tid()
[all …]
|
| /linux-6.8/tools/perf/tests/ |
| D | thread-map.c | 69 struct perf_thread_map *threads; in process_event() local
75 threads = thread_map__new_event(&event->thread_map); in process_event()
76 TEST_ASSERT_VAL("failed to alloc map", threads); in process_event()
78 TEST_ASSERT_VAL("wrong nr", threads->nr == 1); in process_event()
80 perf_thread_map__pid(threads, 0) == getpid()); in process_event()
82 perf_thread_map__comm(threads, 0) && in process_event()
83 !strcmp(perf_thread_map__comm(threads, 0), NAME)); in process_event()
85 refcount_read(&threads->refcnt) == 1); in process_event()
86 perf_thread_map__put(threads); in process_event()
92 struct perf_thread_map *threads; in test__thread_map_synthesize() local
[all …]
|
| D | mmap-thread-lookup.c | 21 #define THREADS 4 macro
32 static struct thread_data threads[THREADS]; variable
81 struct thread_data *td = &threads[i]; in thread_create()
101 struct thread_data *td0 = &threads[0]; in threads_create()
110 for (i = 1; !err && i < THREADS; i++) in threads_create()
118 struct thread_data *td0 = &threads[0]; in threads_destroy()
126 for (i = 1; !err && i < THREADS; i++) in threads_destroy()
127 err = pthread_join(threads[i].pt, NULL); in threads_destroy()
162 * The threads_create will not return before all threads in mmap_events()
168 TEST_ASSERT_VAL("failed to create threads", !threads_create()); in mmap_events()
[all …]
|
| /linux-6.8/tools/lib/perf/tests/ |
| D | test-evsel.c | 56 struct perf_thread_map *threads; in test_stat_thread() local
64 threads = perf_thread_map__new_dummy(); in test_stat_thread()
65 __T("failed to create threads", threads); in test_stat_thread()
67 perf_thread_map__set_pid(threads, 0, 0); in test_stat_thread()
72 err = perf_evsel__open(evsel, NULL, threads); in test_stat_thread()
81 perf_thread_map__put(threads); in test_stat_thread()
88 struct perf_thread_map *threads; in test_stat_thread_enable() local
97 threads = perf_thread_map__new_dummy(); in test_stat_thread_enable()
98 __T("failed to create threads", threads); in test_stat_thread_enable()
100 perf_thread_map__set_pid(threads, 0, 0); in test_stat_thread_enable()
[all …]
|
| D | test-threadmap.c | 16 struct perf_thread_map *threads; in test_threadmap_array() local
19 threads = perf_thread_map__new_array(nr, array); in test_threadmap_array()
20 __T("Failed to allocate new thread map", threads); in test_threadmap_array()
22 __T("Unexpected number of threads", perf_thread_map__nr(threads) == nr); in test_threadmap_array()
26 perf_thread_map__pid(threads, i) == (array ? array[i] : -1)); in test_threadmap_array()
30 perf_thread_map__set_pid(threads, i, i * 100); in test_threadmap_array()
33 perf_thread_map__pid(threads, 0) == (array ? array[0] : -1)); in test_threadmap_array()
37 perf_thread_map__pid(threads, i) == i * 100); in test_threadmap_array()
40 perf_thread_map__put(threads); in test_threadmap_array()
48 struct perf_thread_map *threads; in test_threadmap() local
[all …]
|
| D | test-evlist.c | 95 struct perf_thread_map *threads; in test_stat_thread() local
108 threads = perf_thread_map__new_dummy(); in test_stat_thread()
109 __T("failed to create threads", threads); in test_stat_thread()
111 perf_thread_map__set_pid(threads, 0, 0); in test_stat_thread()
130 perf_evlist__set_maps(evlist, NULL, threads); in test_stat_thread()
143 perf_thread_map__put(threads); in test_stat_thread()
150 struct perf_thread_map *threads; in test_stat_thread_enable() local
165 threads = perf_thread_map__new_dummy(); in test_stat_thread_enable()
166 __T("failed to create threads", threads); in test_stat_thread_enable()
168 perf_thread_map__set_pid(threads, 0, 0); in test_stat_thread_enable()
[all …]
|
| /linux-6.8/tools/lib/perf/ |
| D | threadmap.c | 47 struct perf_thread_map *threads = thread_map__alloc(nr_threads); in perf_thread_map__new_array() local
50 if (!threads) in perf_thread_map__new_array()
54 perf_thread_map__set_pid(threads, i, array ? array[i] : -1); in perf_thread_map__new_array()
56 threads->nr = nr_threads; in perf_thread_map__new_array()
57 refcount_set(&threads->refcnt, 1); in perf_thread_map__new_array()
59 return threads; in perf_thread_map__new_array()
67 static void perf_thread_map__delete(struct perf_thread_map *threads) in perf_thread_map__delete() argument
69 if (threads) { in perf_thread_map__delete()
72 WARN_ONCE(refcount_read(&threads->refcnt) != 0, in perf_thread_map__delete()
74 for (i = 0; i < threads->nr; i++) in perf_thread_map__delete()
[all …]
|
| /linux-6.8/tools/perf/bench/ |
| D | breakpoint.c | 33 OPT_UINTEGER('t', "threads", &thread_params.nthreads, "Specify amount of threads"),
89 pthread_t *threads; in breakpoint_thread() local
91 threads = calloc(thread_params.nthreads, sizeof(threads[0])); in breakpoint_thread()
92 if (!threads) in breakpoint_thread()
98 if (pthread_create(&threads[i], NULL, passive_thread, &done)) in breakpoint_thread()
104 pthread_join(threads[i], NULL); in breakpoint_thread()
106 free(threads); in breakpoint_thread()
111 // then starts nparallel threads which create and join bench_repeat batches of nthreads threads.
155 printf("# Created/joined %d threads with %d breakpoints and %d parallelism\n", in bench_breakpoint_thread()
185 OPT_UINTEGER('p', "passive", &enable_params.npassive, "Specify amount of passive threads"),
[all …]
|
| D | synthesize.c | 34 OPT_UINTEGER('m', "min-threads", &min_threads,
35 "Minimum number of threads in multithreaded bench"),
36 OPT_UINTEGER('M', "max-threads", &max_threads,
37 "Maximum number of threads in multithreaded bench"),
62 struct perf_thread_map *threads, in do_run_single_threaded() argument
81 target, threads, in do_run_single_threaded()
116 struct perf_thread_map *threads; in run_single_threaded() local
125 threads = thread_map__new_by_pid(getpid()); in run_single_threaded()
126 if (!threads) { in run_single_threaded()
136 err = do_run_single_threaded(session, threads, &target, false); in run_single_threaded()
[all …]
|
| D | futex-wake.c | 5 * futex-wake: Block a bunch of threads on a futex and wake'em up, N at a time.
33 /* all threads will block on the same futex */
53 OPT_UINTEGER('t', "threads", ¶ms.nthreads, "Specify amount of threads"),
54 OPT_UINTEGER('w', "nwakes", ¶ms.nwakes, "Specify amount of threads to wake at once"),
91 printf("Wokeup %d of %d threads in %.4f ms (+-%.2f%%)\n", in print_summary()
110 /* create and block all threads */ in block_threads()
176 printf("Run summary [PID %d]: blocking on %d threads (at [%s] futex %p), " in bench_futex_wake()
191 /* create, launch & block all threads */ in bench_futex_wake()
194 /* make sure all threads are already blocked */ in bench_futex_wake()
203 /* Ok, all threads are patiently blocked, start waking folks up */ in bench_futex_wake()
[all …]
|
| D | futex-wake-parallel.c | 5 * Block a bunch of threads and let parallel waker threads wakeup an
48 /* all threads will block on the same futex -- hash bucket chaos ;) */
63 OPT_UINTEGER('t', "threads", ¶ms.nthreads, "Specify amount of threads"),
64 OPT_UINTEGER('w', "nwakers", ¶ms.nwakes, "Specify amount of waking threads"),
108 /* create and block all threads */ in wakeup_threads()
161 /* create and block all threads */ in block_threads()
201 printf("[Run %d]: Avg per-thread latency (waking %d/%d threads) " in print_run()
216 printf("Avg per-thread latency (waking %d/%d threads) in %.4f ms (+-%.2f%%)\n", in print_summary()
294 printf("Run summary [PID %d]: blocking on %d threads (at [%s] " in bench_futex_wake_parallel()
295 "futex %p), %d threads waking up %d at a time.\n\n", in bench_futex_wake_parallel()
[all …]
|
| /linux-6.8/Documentation/driver-api/dmaengine/ |
| D | dmatest.rst | 16 test multiple channels at the same time, and it can start multiple threads
73 (shared) parameters used for all threads will use the new values.
74 After the channels are specified, each thread is set as pending. All threads
82 Once started a message like " dmatest: Added 1 threads using dma0chan0" is
171 dmatest: Added 1 threads using dma0chan2
179 dmatest: Added 1 threads using dma0chan1
181 dmatest: Added 1 threads using dma0chan2
191 dmatest: Added 1 threads using dma0chan0
192 dmatest: Added 1 threads using dma0chan3
193 dmatest: Added 1 threads using dma0chan4
[all …]
|
| /linux-6.8/Documentation/arch/x86/ |
| D | topology.rst | 24 threads, cores, packages, etc.
37 - threads
93 A core consists of 1 or more threads. It does not matter whether the threads
94 are SMT- or CMT-type threads.
103 The number of threads in a core. The number of threads in a package can be
109 Threads chapter
114 AMDs nomenclature for CMT threads is "Compute Unit Core". The kernel always
121 The cpumask contains all online threads in the package to which a thread
124 The number of online threads is also printed in /proc/cpuinfo "siblings."
128 The cpumask contains all online threads in the core to which a thread
[all …]
|
| /linux-6.8/tools/testing/selftests/powerpc/dscr/ |
| D | dscr_default_test.c | 6 * it's sysfs interface and then verifies that all threads
121 struct random_thread_args threads[THREADS]; in dscr_default_random_test() local
132 FAIL_IF(pthread_barrier_init(&barrier, NULL, THREADS)); in dscr_default_random_test()
136 for (int i = 0; i < THREADS; i++) { in dscr_default_random_test()
137 threads[i].expected_system_dscr = &expected_system_dscr; in dscr_default_random_test()
138 threads[i].rw_lock = &rw_lock; in dscr_default_random_test()
139 threads[i].barrier = &barrier; in dscr_default_random_test()
141 FAIL_IF(pthread_create(&threads[i].thread_id, NULL, in dscr_default_random_test()
142 dscr_default_random_thread, (void *)&threads[i])); in dscr_default_random_test()
145 for (int i = 0; i < THREADS; i++) in dscr_default_random_test()
[all …]
|
| D | dscr_explicit_test.c | 135 struct random_thread_args threads[THREADS]; in dscr_explicit_random_test() local
140 FAIL_IF(pthread_barrier_init(&barrier, NULL, THREADS)); in dscr_explicit_random_test()
142 for (int i = 0; i < THREADS; i++) { in dscr_explicit_random_test()
143 threads[i].do_yields = i % 2 == 0; in dscr_explicit_random_test()
144 threads[i].barrier = &barrier; in dscr_explicit_random_test()
146 FAIL_IF(pthread_create(&threads[i].thread_id, NULL, in dscr_explicit_random_test()
147 dscr_explicit_random_thread, (void *)&threads[i])); in dscr_explicit_random_test()
150 for (int i = 0; i < THREADS; i++) in dscr_explicit_random_test()
151 FAIL_IF(pthread_join(threads[i].thread_id, NULL)); in dscr_explicit_random_test()
|
| /linux-6.8/include/uapi/linux/ |
| D | membarrier.h | 34 * @MEMBARRIER_CMD_GLOBAL: Execute a memory barrier on all running threads.
36 * is ensured that all running threads have passed
40 * (non-running threads are de facto in such a
41 * state). This covers threads from all processes
44 * Execute a memory barrier on all running threads
48 * is ensured that all running threads have passed
52 * (non-running threads are de facto in such a
53 * state). This only covers threads from processes
70 * threads siblings have passed through a state
74 * (non-running threads are de facto in such a
[all …]
|
| /linux-6.8/Documentation/power/ |
| D | freezing-of-tasks.rst | 11 kernel threads are controlled during hibernation or system-wide suspend (on some
20 threads) are regarded as 'freezable' and treated in a special way before the
31 wakes up all the kernel threads. All freezable tasks must react to that by
38 tasks are generally frozen before kernel threads.
45 signal-handling code, but the freezable kernel threads need to call it
74 kernel threads must call try_to_freeze() somewhere or use one of the
90 - freezes all tasks (including kernel threads) because we can't freeze
91 kernel threads without freezing userspace tasks
94 - thaws only kernel threads; this is particularly useful if we need to do
95 anything special in between thawing of kernel threads and thawing of
[all …]
|
| /linux-6.8/tools/testing/selftests/mm/ |
| D | migration.c | 25 pthread_t *threads; in FIXTURE() local
51 self->threads = malloc(self->nthreads * sizeof(*self->threads)); in FIXTURE_SETUP()
52 ASSERT_NE(self->threads, NULL); in FIXTURE_SETUP()
59 free(self->threads); in FIXTURE_TEARDOWN()
115 * between nodes whilst other threads try and access them triggering the
124 SKIP(return, "Not enough threads or NUMA nodes available");
132 if (pthread_create(&self->threads[i], NULL, access_mem, ptr))
137 ASSERT_EQ(pthread_cancel(self->threads[i]), 0);
150 SKIP(return, "Not enough threads or NUMA nodes available");
184 SKIP(return, "Not enough threads or NUMA nodes available");
[all …]
|
| /linux-6.8/tools/testing/selftests/powerpc/math/ |
| D | fpu_signal.c | 27 * worker threads
73 int i, j, rc, threads; in test_signal_fpu() local
77 threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR; in test_signal_fpu()
78 tids = malloc(threads * sizeof(pthread_t)); in test_signal_fpu()
82 threads_starting = threads; in test_signal_fpu()
83 for (i = 0; i < threads; i++) { in test_signal_fpu()
94 printf("\tSending signals to all threads %d times...", ITERATIONS); in test_signal_fpu()
96 for (j = 0; j < threads; j++) { in test_signal_fpu()
105 for (i = 0; i < threads; i++) { in test_signal_fpu()
|
| D | fpu_preempt.c | 8 * threads and a long wait. As such, a successful test doesn't mean much but
28 * worker threads
53 int i, rc, threads; in test_preempt_fpu() local
56 threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR; in test_preempt_fpu()
57 tids = malloc((threads) * sizeof(pthread_t)); in test_preempt_fpu()
61 threads_starting = threads; in test_preempt_fpu()
62 for (i = 0; i < threads; i++) { in test_preempt_fpu()
84 for (i = 0; i < threads; i++) { in test_preempt_fpu()
|
| /linux-6.8/arch/powerpc/kvm/ |
| D | book3s_hv_ras.c | 258 * - On TB error, HMI interrupt is reported on all the threads of the core
267 * All threads need to co-ordinate before making opal hmi handler.
268 * All threads will use sibling_subcore_state->in_guest[] (shared by all
269 * threads in the core) in paca which holds information about whether
272 * subcore status. Only primary threads from each subcore is responsible
279 * primary threads to decide who takes up the responsibility.
286 * - All other threads which are in host will call
291 * - Once all primary threads clear in_guest[0-3], all of them will invoke
293 * - Now all threads will wait for TB resync to complete by invoking
297 * - All other threads will now come out of resync wait loop and proceed
[all …]
|
| /linux-6.8/samples/pktgen/ |
| D | pktgen_sample06_numa_awared_queue_irq_affinity.sh | 3 # Multiqueue: Using pktgen threads for sending on multiple CPUs
4 # * adding devices to kernel threads which are in the same NUMA node
5 # * bound devices queue's irq affinity to the threads, 1:1 mapping
32 [ $THREADS -gt ${#irq_array[*]} -o $THREADS -gt ${#cpu_array[*]} ] && \
33 err 1 "Thread number $THREADS exceeds: min (${#irq_array[*]},${#cpu_array[*]})"
52 # Threads are specified with parameter -t value in $THREADS
53 for ((i = 0; i < $THREADS; i++)); do
109 for ((i = 0; i < $THREADS; i++)); do
|
| /linux-6.8/tools/testing/selftests/dma/ |
| D | dma_map_benchmark.c | 29 int threads = 1, seconds = 20, node = -1; in main() local
41 threads = atoi(optarg); in main()
66 if (threads <= 0 || threads > DMA_MAP_MAX_THREADS) { in main()
67 fprintf(stderr, "invalid number of threads, must be in 1-%d\n", in main()
109 map.threads = threads; in main()
121 printf("dma mapping benchmark: threads:%d seconds:%d node:%d dir:%s granule: %d\n", in main()
122 threads, seconds, node, dir[directions], granule); in main()
|
| /linux-6.8/tools/lib/perf/Documentation/examples/ |
| D | counting.c | 23 struct perf_thread_map *threads; in main() local
40 threads = perf_thread_map__new_dummy(); in main()
41 if (!threads) { in main()
42 fprintf(stderr, "failed to create threads\n"); in main()
45 perf_thread_map__set_pid(threads, 0, 0); in main()
63 perf_evlist__set_maps(evlist, NULL, threads); in main()
81 perf_thread_map__put(threads); in main()
|
| /linux-6.8/tools/perf/python/ |
| D | twatch.py | 13 threads = perf.thread_map(thread)
21 """What we want are just the PERF_RECORD_ lifetime events for threads,
25 threads comes and goes... So use (perf.TYPE_SOFTWARE, perf_COUNT_SW_DUMMY,
28 evsel.open(cpus = cpus, threads = threads);
29 evlist = perf.evlist(cpus, threads)
56 to figure out if this is a context switch in or out of the monitored threads.
|