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/lib/perf/TODO | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 tools/lib/perf/TODO (limited to 'tools/lib/perf/TODO') diff --git a/tools/lib/perf/TODO b/tools/lib/perf/TODO new file mode 100644 index 000000000..e17972869 --- /dev/null +++ b/tools/lib/perf/TODO @@ -0,0 +1,30 @@ +Future ABI changes +================== + +This file collects items that require a libperf ABI bump. Each entry +should describe the current limitation, the desired end state, and the +scope of the change so that a future ABI revision can batch them +together. + +1. Widen struct perf_cpu.cpu from int16_t to int + - Current limit: 32767 CPUs. No architecture exceeds this today + (x86_64 max is 8192, arm64 is 4096), but NR_CPUS limits keep + growing. perf clamps to INT16_MAX in set_max_cpu_num() as a + safety net. + - Code simplification: the int16_t forces defensive truncation + checks at every boundary where a wider CPU index (int from + sample->cpu, al->cpu, etc.) is narrowed into struct perf_cpu. + Without these checks, values > 32767 silently wrap to negative + numbers (two's complement), bypassing bounds validation. + Widening to int eliminates this entire class of silent + truncation bugs and removes the need for the INT16_MAX clamp + in set_max_cpu_num(). + - Scope: struct perf_cpu is embedded everywhere — perf_cpu_map__cpu(), + perf_cpu_map__min(), perf_cpu_map__max(), perf_cpu_map__has(), the + for_each_cpu macros, and all internal callers. The perf_cpu_map + internal array (RC_CHK_ACCESS(map)->map[]) stores struct perf_cpu + directly. Widening changes the struct layout and every function + that returns or accepts struct perf_cpu by value. + - Migration: bump LIBPERF version in libperf.map, audit all + sizeof(struct perf_cpu) assumptions, update perf.data + serialization if needed. -- cgit v1.3.1