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| author | Juergen Gross <jgross@suse.com> | 2021-03-11 15:23:09 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-03-11 16:17:52 +0100 |
| commit | a0e2bf7cb7006b5a58ee81f4da4fe575875f2781 (patch) | |
| tree | 74da4d815e17d058066f7d615e0b6c462b155f71 /arch/x86/include/asm/paravirt.h | |
| parent | 6ea312d95e0226b306bb4b8ee3a0727d880378cb (diff) | |
| download | linux-a0e2bf7cb7006b5a58ee81f4da4fe575875f2781.tar.bz2 | |
x86/paravirt: Switch time pvops functions to use static_call()
The time pvops functions are the only ones left which might be
used in 32-bit mode and which return a 64-bit value.
Switch them to use the static_call() mechanism instead of pvops, as
this allows quite some simplification of the pvops implementation.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210311142319.4723-5-jgross@suse.com
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 4abf110e2243..6408fd0f55ab 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -15,11 +15,20 @@ #include <linux/bug.h> #include <linux/types.h> #include <linux/cpumask.h> +#include <linux/static_call_types.h> #include <asm/frame.h> -static inline unsigned long long paravirt_sched_clock(void) +u64 dummy_steal_clock(int cpu); +u64 dummy_sched_clock(void); + +DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock); +DECLARE_STATIC_CALL(pv_sched_clock, dummy_sched_clock); + +void paravirt_set_sched_clock(u64 (*func)(void)); + +static inline u64 paravirt_sched_clock(void) { - return PVOP_CALL0(unsigned long long, time.sched_clock); + return static_call(pv_sched_clock)(); } struct static_key; @@ -33,7 +42,7 @@ bool pv_is_native_vcpu_is_preempted(void); static inline u64 paravirt_steal_clock(int cpu) { - return PVOP_CALL1(u64, time.steal_clock, cpu); + return static_call(pv_steal_clock)(cpu); } /* The paravirtualized I/O functions */ |