[RFC PATCH v2 9/9] x86: refactor wbinvd_on_all_cpus to void function

From: Gilad Ben-Yossef
Date: Sun Jan 08 2012 - 08:33:53 EST


wbvind_on_all_cpus returns the value from on_each_cpu as return
value.

on_each_cpu always returns a hard coded zero value and none of
the callers to wbinvd_on_all_cpu check for its return value
so we might as well just drop it.

Signed-off-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Reviewed-by: Michal Nazarewicz <mina86@xxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: "H. Peter Anvin" <hpa@xxxxxxxxx>
CC: x86@xxxxxxxxxx
---
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 73b11bc..989e4a8 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -158,7 +158,7 @@ void native_cpu_die(unsigned int cpu);
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 native_send_call_func_ipi(const struct cpumask *mask);
void native_send_call_func_single_ipi(int cpu);
@@ -173,10 +173,9 @@ static inline int num_booting_cpus(void)
}
#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;
}
#endif /* CONFIG_SMP */

diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c
index 760f7e1..db2eee1 100644
--- a/arch/x86/lib/cache-smp.c
+++ b/arch/x86/lib/cache-smp.c
@@ -12,9 +12,8 @@ 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);
--
1.7.0.4

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