[PATCH 2/7] x86, lib: Drop the unused return value from wbinvd_on_all_cpus()

Sean Christopherson
2025-02-27T01:49:07Z

Drop wbinvd_on_all_cpus()'s return value; both the "real" version and the
stub always return '0', and none of the callers check the return.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/include/asm/smp.h | 5 ++---
arch/x86/lib/cache-smp.c | 3 +--
2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index ca073f40698f..ee61e322e2a1 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -111,7 +111,7 @@ void __noreturn hlt_play_dead(void);
void native_play_dead(void);
void play_dead_common(void);
void wbinvd_on_cpu(int cpu);
-int wbinvd_on_all_cpus(void);
+void wbinvd_on_all_cpus(void);

void smp_kick_mwait_play_dead(void);

@@ -154,10 +154,9 @@ static inline struct cpumask *cpu_l2c_shared_mask(int cpu)

#else /* !CONFIG_SMP */
#define wbinvd_on_cpu(cpu) wbinvd()
-static inline int wbinvd_on_all_cpus(void)
+static inline void wbinvd_on_all_cpus(void)
{
wbinvd();
- return 0;
}

static inline struct cpumask *cpu_llc_shared_mask(int cpu)
diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c
index 7af743bd3b13..079c3f3cd32c 100644
--- a/arch/x86/lib/cache-smp.c
+++ b/arch/x86/lib/cache-smp.c
@@ -14,9 +14,8 @@ void wbinvd_on_cpu(int cpu)
}
EXPORT_SYMBOL(wbinvd_on_cpu);

-int wbinvd_on_all_cpus(void)
+void wbinvd_on_all_cpus(void)
{
on_each_cpu(__wbinvd, NULL, 1);
- return 0;
}
EXPORT_SYMBOL(wbinvd_on_all_cpus);