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| author | Heiko Carstens | 2007-05-17 07:11:09 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2007-05-17 14:23:04 +0200 |
| commit | 79974a0e4c6be6e9a3717b4c5a5d5c44c36b1653 (patch) | |
| tree | 0bf5e98710fa4ae970728ceea7d7d5324f65abcc | |
| parent | simplify compat_sys_timerfd (diff) | |
| download | kernel-qcow2-linux-79974a0e4c6be6e9a3717b4c5a5d5c44c36b1653.tar.gz kernel-qcow2-linux-79974a0e4c6be6e9a3717b4c5a5d5c44c36b1653.tar.xz kernel-qcow2-linux-79974a0e4c6be6e9a3717b4c5a5d5c44c36b1653.zip | |
Let smp_call_function_single return -EBUSY on UP
All architectures that have an implementation of smp_call_function_single
let it return -EBUSY if it is asked to execute func on the current cpu.
(akpm: except for x86_64). Therefore the UP version must always return
-EBUSY.
[akpm@linux-foundation.org: build fix]
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/smp.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h index 3f70149eabbb..96ac21f8dd73 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -6,6 +6,7 @@ * Alan Cox. <alan@redhat.com> */ +#include <linux/errno.h> extern void cpu_idle(void); @@ -99,11 +100,9 @@ static inline void smp_send_reschedule(int cpu) { } #define num_booting_cpus() 1 #define smp_prepare_boot_cpu() do {} while (0) static inline int smp_call_function_single(int cpuid, void (*func) (void *info), - void *info, int retry, int wait) + void *info, int retry, int wait) { - /* Disable interrupts here? */ - func(info); - return 0; + return -EBUSY; } #endif /* !SMP */ |