diff options
| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2026-09-09 10:51:14 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-10-15 17:33:18 +0200 |
| commit | 35f0a96848a730495ff310645387578ca68934cd (patch) | |
| tree | bc4e9e14a5d8db7e952346525b1c8e9c2eff3660 /kernel/time | |
| parent | 72d3fcf802c45d00b300f25b848a93c3a2bd7c7e (diff) | |
vdso: Move the kernel-side time update helpers to a new header
The vdso/ header namespace is meant for symbols which are usable from
vDSO userspace code. However vdso_update_begin() and vdso_update_end()
are only usable from the kernel.
Move them into a new header in the linux/ namespace. Also rename them to
make clear that they are only for time-related data.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260909-vdso-asm-generic-vsyscall-h-v1-1-63ae856cc659@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/vsyscall.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/kernel/time/vsyscall.c b/kernel/time/vsyscall.c index aa59919b8f2c..4b96a8b23294 100644 --- a/kernel/time/vsyscall.c +++ b/kernel/time/vsyscall.c @@ -9,6 +9,7 @@ #include <linux/hrtimer.h> #include <linux/timekeeper_internal.h> +#include <linux/vdso_time.h> #include <vdso/datapage.h> #include <vdso/helpers.h> #include <vdso/vsyscall.h> @@ -177,7 +178,7 @@ void vdso_time_update_aux(struct timekeeper *tk) #endif /** - * vdso_update_begin - Start of a VDSO update section + * vdso_time_update_begin - Start of a VDSO update section * * Allows architecture code to safely update the architecture specific VDSO * data. Disables interrupts, acquires timekeeper lock to serialize against @@ -186,9 +187,9 @@ void vdso_time_update_aux(struct timekeeper *tk) * inconsistent data. * * Returns: Saved interrupt flags which need to be handed in to - * vdso_update_end(). + * vdso_time_update_end(). */ -unsigned long vdso_update_begin(void) +unsigned long vdso_time_update_begin(void) { struct vdso_time_data *vdata = vdso_k_time_data; unsigned long flags = timekeeper_lock_irqsave(); @@ -198,14 +199,14 @@ unsigned long vdso_update_begin(void) } /** - * vdso_update_end - End of a VDSO update section - * @flags: Interrupt flags as returned from vdso_update_begin() + * vdso_time_update_end - End of a VDSO update section + * @flags: Interrupt flags as returned from vdso_time_update_begin() * - * Pairs with vdso_update_begin(). Marks vdso data consistent, invokes data + * Pairs with vdso_time_update_begin(). Marks vdso data consistent, invokes data * synchronization if the architecture requires it, drops timekeeper lock * and restores interrupt flags. */ -void vdso_update_end(unsigned long flags) +void vdso_time_update_end(unsigned long flags) { struct vdso_time_data *vdata = vdso_k_time_data; |