From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- tools/perf/util/perf-hooks.c | 90 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 tools/perf/util/perf-hooks.c (limited to 'tools/perf/util/perf-hooks.c') diff --git a/tools/perf/util/perf-hooks.c b/tools/perf/util/perf-hooks.c new file mode 100644 index 000000000..7a0ab3507 --- /dev/null +++ b/tools/perf/util/perf-hooks.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * perf_hooks.c + * + * Copyright (C) 2016 Wang Nan + * Copyright (C) 2016 Huawei Inc. + */ + +#include +#include +#include +#include +#include +#include +#include "util/debug.h" +#include "util/perf-hooks.h" + +static sigjmp_buf jmpbuf; +static const struct perf_hook_desc *current_perf_hook; + +void perf_hooks__invoke(const struct perf_hook_desc *desc) +{ + if (!(desc && desc->p_hook_func && *desc->p_hook_func)) + return; + + if (sigsetjmp(jmpbuf, 1)) { + pr_warning("Fatal error (SEGFAULT) in perf hook '%s'\n", + desc->hook_name); + *(current_perf_hook->p_hook_func) = NULL; + } else { + current_perf_hook = desc; + (**desc->p_hook_func)(desc->hook_ctx); + } + current_perf_hook = NULL; +} + +void perf_hooks__recover(void) +{ + if (current_perf_hook) + siglongjmp(jmpbuf, 1); +} + +#define PERF_HOOK(name) \ +perf_hook_func_t __perf_hook_func_##name = NULL; \ +struct perf_hook_desc __perf_hook_desc_##name = \ + {.hook_name = #name, \ + .p_hook_func = &__perf_hook_func_##name, \ + .hook_ctx = NULL}; +#include "perf-hooks-list.h" +#undef PERF_HOOK + +#define PERF_HOOK(name) \ + &__perf_hook_desc_##name, + +static struct perf_hook_desc *perf_hooks[] = { +#include "perf-hooks-list.h" +}; +#undef PERF_HOOK + +int perf_hooks__set_hook(const char *hook_name, + perf_hook_func_t hook_func, + void *hook_ctx) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) { + if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0) + continue; + + if (*(perf_hooks[i]->p_hook_func)) + pr_warning("Overwrite existing hook: %s\n", hook_name); + *(perf_hooks[i]->p_hook_func) = hook_func; + perf_hooks[i]->hook_ctx = hook_ctx; + return 0; + } + return -ENOENT; +} + +perf_hook_func_t perf_hooks__get_hook(const char *hook_name) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) { + if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0) + continue; + + return *(perf_hooks[i]->p_hook_func); + } + return ERR_PTR(-ENOENT); +} -- cgit v1.3.1