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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /tools/perf/tests/keep-tracking.c | |
| download | linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip | |
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij:
"Core changes:
- Use the non-blocking mux_state_try_select() in the generic MUX pin
control back-end
- Free pin maps on pinctrl_generic_to_map() failure in the core
helpers
New hardware pin control:
- Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
(this is for the low power audio, LPASS = Low Power Audio SubSystem
portions)
- Upboard support on top of the Intel pin controller
- Apple T6030 and T6031 support (just compatible strings)
- Samsung Exynos 8855 SoC
- Mediatek MT6858 SoC
- Rockchip RK3308B and RV1106 SoCs
- Airoha EN7523 and AN7563 SoCs
Improvements:
- Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable
- Qualcomm improvements on top of the Qualcomm PDC (power domain
controller) irqchip improvements from tglx:s tree
- Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups
- The NPCM8xx driver has been put into shape fixing many pin and
group definitions
- Some non-urgent Tegra 264 pin assignments are fixed up
- Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
pin assignments, missing features etc"
* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
pinctrl: meson: sync some modify from A4
pinctrl: meson: a4: Add input enable pin configuration
pinctrl: realtek: rtd1625: remove unused group name spdif_sel
pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
Revert "Merge branch 'ib-rsk7204' into devel"
pinctrl: rockchip: Add RV1106 pinctrl support
dt-bindings: pinctrl: rockchip: Add RV1106 compatible
pinctrl: rockchip: Decode drive strength in the get function
pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
pinctrl: airoha: add support of an7563 SoC
dt-bindings: pinctrl: airoha: add support of an7563 pin controller
pinctrl: airoha: try to find chip scu node by phandle first
pinctrl: airoha: add support of en7523 SoC
dt-bindings: pinctrl: airoha: add support of en7523 pin controller
pinctrl: airoha: an7583: add support for olt pinmux
pinctrl: airoha: an7583: add support for pon_alt pinmux
pinctrl: airoha: an7583: add support for npu_uart pinmux
dt-bindings: pinctrl: airoha: an7583: add missed features
...
Diffstat (limited to 'tools/perf/tests/keep-tracking.c')
| -rw-r--r-- | tools/perf/tests/keep-tracking.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c new file mode 100644 index 000000000..b760041be --- /dev/null +++ b/tools/perf/tests/keep-tracking.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/types.h> +#include <limits.h> +#include <unistd.h> +#include <sys/prctl.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +#include "debug.h" +#include "parse-events.h" +#include "evlist.h" +#include "evsel.h" +#include "record.h" +#include "thread_map.h" +#include "tests.h" +#include "util/mmap.h" + +#define CHECK__(x) { \ + while ((x) < 0) { \ + pr_debug(#x " failed!\n"); \ + goto out_err; \ + } \ +} + +#define CHECK_NOT_NULL__(x) { \ + while ((x) == NULL) { \ + pr_debug(#x " failed!\n"); \ + goto out_err; \ + } \ +} + +static int find_comm(struct evlist *evlist, const char *comm) +{ + union perf_event *event; + struct mmap *md; + int i, found; + + found = 0; + for (i = 0; i < evlist__core(evlist)->nr_mmaps; i++) { + md = &evlist__mmap(evlist)[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + if (event->header.type == PERF_RECORD_COMM && + (pid_t)event->comm.pid == getpid() && + (pid_t)event->comm.tid == getpid() && + strcmp(event->comm.comm, comm) == 0) + found += 1; + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + } + return found; +} + +/** + * test__keep_tracking - test using a dummy software event to keep tracking. + * + * This function implements a test that checks that tracking events continue + * when an event is disabled but a dummy software event is not disabled. If the + * test passes %0 is returned, otherwise %-1 is returned. + */ +static int test__keep_tracking(struct test_suite *test __maybe_unused, int subtest __maybe_unused) +{ + struct record_opts opts = { + .mmap_pages = UINT_MAX, + .user_freq = UINT_MAX, + .user_interval = ULLONG_MAX, + .target = { + .uses_mmap = true, + }, + }; + struct perf_thread_map *threads = NULL; + struct perf_cpu_map *cpus = NULL; + struct evlist *evlist = NULL; + struct evsel *evsel = NULL; + int found, err = -1; + const char *comm; + + threads = thread_map__new_by_tid(getpid()); + CHECK_NOT_NULL__(threads); + + cpus = perf_cpu_map__new_online_cpus(); + CHECK_NOT_NULL__(cpus); + + evlist = evlist__new(); + CHECK_NOT_NULL__(evlist); + + perf_evlist__set_maps(evlist__core(evlist), cpus, threads); + + CHECK__(parse_event(evlist, "dummy:u")); + CHECK__(parse_event(evlist, "cpu-cycles:u")); + + evlist__config(evlist, &opts, NULL); + + evsel = evlist__first(evlist); + + evsel->core.attr.comm = 1; + evsel->core.attr.disabled = 1; + evsel->core.attr.enable_on_exec = 0; + + if (evlist__open(evlist) < 0) { + pr_debug("Unable to open dummy and cycles event\n"); + err = TEST_SKIP; + goto out_err; + } + + CHECK__(evlist__do_mmap(evlist, UINT_MAX)); + + /* + * First, test that a 'comm' event can be found when the event is + * enabled. + */ + + evlist__enable(evlist); + + comm = "Test COMM 1"; + CHECK__(prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0)); + + evlist__disable(evlist); + + found = find_comm(evlist, comm); + if (found != 1) { + pr_debug("First time, failed to find tracking event.\n"); + goto out_err; + } + + /* + * Secondly, test that a 'comm' event can be found when the event is + * disabled with the dummy event still enabled. + */ + + evlist__enable(evlist); + + evsel = evlist__last(evlist); + + CHECK__(evsel__disable(evsel)); + + comm = "Test COMM 2"; + CHECK__(prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0)); + + evlist__disable(evlist); + + found = find_comm(evlist, comm); + if (found != 1) { + pr_debug("Second time, failed to find tracking event.\n"); + goto out_err; + } + + err = 0; + +out_err: + if (evlist) { + evlist__disable(evlist); + evlist__put(evlist); + } + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); + + return err; +} + +DEFINE_SUITE("Use a dummy software event to keep tracking", keep_tracking); |
