kernel/linux.git/include/linux/hrtimer.h, branch v7.0-rc7

Merge tag 'timers-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-02-11T00:41:59+00:00

Pull timer core updates from Thomas Gleixner: - Inline timecounter_cyc2time() as that is now used in the networking hotpath. Inlining it significantly improves performance. - Optimize the tick dependency check in case that the tracepoint is disabled, which improves the hotpath performance in the tick management code, which is a hotpath on transitions in and out of idle. - The usual cleanups and improvements * tag 'timers-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time/kunit: Document handling of negative years of is_leap() tick/nohz: Optimize check_tick_dependency() with early return time/sched_clock: Use ACCESS_PRIVATE() to evaluate hrtimer::function hrtimer: Drop _tv64() helpers hrtimer: Remove public definition of HIGH_RES_NSEC hrtimer: Remove unused resolution constants time/timecounter: Inline timecounter_cyc2time()

hrtimer: Drop _tv64() helpers

2026-01-13T10:05:49+00:00

Since ktime_t has become an alias to s64, these helpers are unnecessary. Migrate the few remaining users to the regular helpers and remove the now dead code. Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260107-hrtimer-header-cleanup-v1-3-1a698ef0ddae@linutronix.de

treewide: Update email address

2026-01-11T16:09:11+00:00

In a vain attempt to consolidate the email zoo switch everything to the kernel.org account. Signed-off-by: Thomas Gleixner Signed-off-by: Linus Torvalds

hrtimer: Remove hrtimer_clock_base:: Get_time

2025-09-09T10:27:18+00:00

The get_time() callbacks always need to match the bases clockid. Instead of maintaining that association twice in hrtimer_bases, use a helper. Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/all/20250821-hrtimer-cleanup-get_time-v2-8-3ae822e5bfbd@linutronix.de

hrtimer: Use hrtimer_cb_get_time() helper

2025-09-09T10:27:18+00:00

Various other helpers contain open-coded implementations of hrtimer_cb_get_time(). This prevents refactoring the implementation. Reuse the existing helper. For this to work, move hrtimer_cb_get_time() a bit up in the file and also make its argument 'const'. Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/all/20250821-hrtimer-cleanup-get_time-v2-7-3ae822e5bfbd@linutronix.de

hrtimer: Add missing ACCESS_PRIVATE() for hrtimer::function

2025-04-09T19:00:42+00:00

The "function" field of struct hrtimer has been changed to private, but two instances have not been converted to use ACCESS_PRIVATE(). Convert them to use ACCESS_PRIVATE(). Fixes: 04257da0c99c ("hrtimers: Make callback function pointer private") Reported-by: kernel test robot Signed-off-by: Nam Cao Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250408103854.1851093-1-namcao@linutronix.de Closes: https://lore.kernel.org/oe-kbuild-all/202504071931.vOVl13tt-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202504072155.5UAZjYGU-lkp@intel.com/

hrtimers: Delete hrtimer_init()

2025-04-05T08:30:17+00:00

hrtimer_init() is now unused. Delete it. Signed-off-by: Nam Cao Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/all/003722f60c7a2a4f8d4ed24fb741aa313b7e5136.1738746927.git.namcao@linutronix.de

Merge tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-03-25T17:54:15+00:00

Pull timer cleanups from Thomas Gleixner: "A treewide hrtimer timer cleanup hrtimers are initialized with hrtimer_init() and a subsequent store to the callback pointer. This turned out to be suboptimal for the upcoming Rust integration and is obviously a silly implementation to begin with. This cleanup replaces the hrtimer_init(T); T->function = cb; sequence with hrtimer_setup(T, cb); The conversion was done with Coccinelle and a few manual fixups. Once the conversion has completely landed in mainline, hrtimer_init() will be removed and the hrtimer::function becomes a private member" * tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits) wifi: rt2x00: Switch to use hrtimer_update_function() io_uring: Use helper function hrtimer_update_function() serial: xilinx_uartps: Use helper function hrtimer_update_function() ASoC: fsl: imx-pcm-fiq: Switch to use hrtimer_setup() RDMA: Switch to use hrtimer_setup() virtio: mem: Switch to use hrtimer_setup() drm/vmwgfx: Switch to use hrtimer_setup() drm/xe/oa: Switch to use hrtimer_setup() drm/vkms: Switch to use hrtimer_setup() drm/msm: Switch to use hrtimer_setup() drm/i915/request: Switch to use hrtimer_setup() drm/i915/uncore: Switch to use hrtimer_setup() drm/i915/pmu: Switch to use hrtimer_setup() drm/i915/perf: Switch to use hrtimer_setup() drm/i915/gvt: Switch to use hrtimer_setup() drm/i915/huc: Switch to use hrtimer_setup() drm/amdgpu: Switch to use hrtimer_setup() stm class: heartbeat: Switch to use hrtimer_setup() i2c: Switch to use hrtimer_setup() iio: Switch to use hrtimer_setup() ...

can: Switch to use hrtimer_setup()

2025-02-18T09:35:45+00:00

hrtimer_setup() takes the callback function pointer as argument and initializes the timer completely. Replace hrtimer_init() and the open coded initialization of hrtimer::function with the new setup mechanism. Most of this patch is generated by Coccinelle. Except for the TX thrtimer in bcm_tx_setup() because this timer is not used and the callback function is never set. For this particular case, set the callback to hrtimer_dummy_timeout() Signed-off-by: Nam Cao Signed-off-by: Thomas Gleixner Reviewed-by: Marc Kleine-Budde Link: https://lore.kernel.org/all/a3a6be42c818722ad41758457408a32163bfd9a0.1738746872.git.namcao@linutronix.de

hrtimers: Make hrtimer_update_function() less expensive

2025-02-10T19:51:12+00:00

The sanity checks in hrtimer_update_function() are expensive for high frequency usage like in the io/uring code due to locking. Hide the sanity checks behind CONFIG_PROVE_LOCKING, which has a decent chance to be enabled on a regular basis for testing. Fixes: 8f02e3563bb5 ("hrtimers: Introduce hrtimer_update_function()") Reported-by: Jens Axboe Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/87ikpllali.ffs@tglx