diff options
| author | Tiwei Bie <tiwei.btw@antgroup.com> | 2025-10-27 08:18:11 +0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2025-10-27 16:41:15 +0100 |
| commit | 9c82de55d4783e906f18219f833ad97fd8d9c5df (patch) | |
| tree | ea9428edb6dd080e20e1a0508f5b5797dabf0b45 /arch/um/include | |
| parent | 2670917c2fc8902558f3aba4f41e5cc5bf6e18fa (diff) | |
| download | lwn-9c82de55d4783e906f18219f833ad97fd8d9c5df.tar.gz lwn-9c82de55d4783e906f18219f833ad97fd8d9c5df.zip | |
um: Define timers on a per-CPU basis
Define timers on a per-CPU basis to enable each CPU to have its
own timer. This is a preparation for adding SMP support.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-5-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'arch/um/include')
| -rw-r--r-- | arch/um/include/linux/time-internal.h | 3 | ||||
| -rw-r--r-- | arch/um/include/shared/os.h | 6 |
2 files changed, 6 insertions, 3 deletions
diff --git a/arch/um/include/linux/time-internal.h b/arch/um/include/linux/time-internal.h index 138908b999d7..c274eb5ad55e 100644 --- a/arch/um/include/linux/time-internal.h +++ b/arch/um/include/linux/time-internal.h @@ -90,4 +90,7 @@ extern unsigned long tt_extra_sched_jiffies; * which is intentional since we really shouldn't link it in that case. */ void time_travel_ndelay(unsigned long nsec); + +int um_setup_timer(void); + #endif /* __TIMER_INTERNAL_H__ */ diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index 324d4eed3385..0ca6e4548671 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -269,9 +269,9 @@ extern void os_warn(const char *fmt, ...) /* time.c */ extern void os_idle_sleep(void); extern int os_timer_create(void); -extern int os_timer_set_interval(unsigned long long nsecs); -extern int os_timer_one_shot(unsigned long long nsecs); -extern void os_timer_disable(void); +extern int os_timer_set_interval(int cpu, unsigned long long nsecs); +extern int os_timer_one_shot(int cpu, unsigned long long nsecs); +extern void os_timer_disable(int cpu); extern long long os_persistent_clock_emulation(void); extern long long os_nsecs(void); |