[PATCH v5 30/51] x86/paravirt: Remove unnecessary PARAVIRT=n stub for paravirt_set_sched_clock()
From: Sean Christopherson <seanjc@google.com>
Date: 2026-07-01 19:33:05
Also in:
kvm, linux-coco, linux-doc, lkml, virtualization, xen-devel
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Remove the unnecessary paravirt_set_sched_clock() stub for PARAVIRT=n, as
all callers are gated by PARAVIRT=y. Eliminating the stub will avoid a
pile of pointless churn as the "real" implementation evolves.
No functional change intended.
Fixes: 39965afb1151 ("x86/paravirt: Move paravirt_sched_clock() related code into tsc.c")
Reviewed-by: David Woodhouse <redacted>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/include/asm/timer.h | 3 +++
arch/x86/kernel/tsc.c | 1 -
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/timer.h b/arch/x86/include/asm/timer.h
index fda18bcb19b4..c71b466d6ace 100644
--- a/arch/x86/include/asm/timer.h
+++ b/arch/x86/include/asm/timer.h@@ -12,7 +12,10 @@ extern void recalibrate_cpu_khz(void); extern int no_timer_check; extern bool using_native_sched_clock(void); + +#ifdef CONFIG_PARAVIRT void paravirt_set_sched_clock(u64 (*func)(void)); +#endif /* * We use the full linear equation: f(x) = a + b*x, in order to allow
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 56e73e96920a..375b0279df66 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c@@ -288,7 +288,6 @@ void paravirt_set_sched_clock(u64 (*func)(void)) u64 sched_clock_noinstr(void) __attribute__((alias("native_sched_clock"))); bool using_native_sched_clock(void) { return true; } -void paravirt_set_sched_clock(u64 (*func)(void)) { } #endif notrace u64 sched_clock(void)
--
2.55.0.rc0.799.gd6f94ed593-goog