diff options
| author | Juergen Gross <jgross@suse.com> | 2026-01-05 12:05:05 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2026-01-12 15:39:14 +0100 |
| commit | e6b2aa6d40045a3149071ca3af950ea8e6ff79c4 (patch) | |
| tree | 3df4f881bb3f28e0293ace54e3db62f15967f255 /include/linux | |
| parent | 68b10fd40d492ebfaebe716dbe21fc559a128065 (diff) | |
sched: Move clock related paravirt code to kernel/sched
Paravirt clock related functions are available in multiple archs.
In order to share the common parts, move the common static keys
to kernel/sched/ and remove them from the arch specific files.
Make a common paravirt_steal_clock() implementation available in
kernel/sched/cputime.c, guarding it with a new config option
CONFIG_HAVE_PV_STEAL_CLOCK_GEN, which can be selected by an arch
in case it wants to use that common variant.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260105110520.21356-7-jgross@suse.com
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched/cputime.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/sched/cputime.h b/include/linux/sched/cputime.h index 5f8fd5b24a2e..e90efaf6d26e 100644 --- a/include/linux/sched/cputime.h +++ b/include/linux/sched/cputime.h @@ -2,6 +2,7 @@ #ifndef _LINUX_SCHED_CPUTIME_H #define _LINUX_SCHED_CPUTIME_H +#include <linux/static_call_types.h> #include <linux/sched/signal.h> /* @@ -180,4 +181,21 @@ static inline void prev_cputime_init(struct prev_cputime *prev) extern unsigned long long task_sched_runtime(struct task_struct *task); +#ifdef CONFIG_PARAVIRT +struct static_key; +extern struct static_key paravirt_steal_enabled; +extern struct static_key paravirt_steal_rq_enabled; + +#ifdef CONFIG_HAVE_PV_STEAL_CLOCK_GEN +u64 dummy_steal_clock(int cpu); + +DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock); + +static inline u64 paravirt_steal_clock(int cpu) +{ + return static_call(pv_steal_clock)(cpu); +} +#endif +#endif + #endif /* _LINUX_SCHED_CPUTIME_H */ |