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| author | Paul Mackerras <paulus@samba.org> | 2006-12-04 05:59:07 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-04 05:59:07 +0100 |
| commit | 79acbb3ff2d8095b692e1502b9eb2ccec348de26 (patch) | |
| tree | 6ab773e5a8f9de2cd6443362b21d0d6fffe3b35e /arch/ia64/kernel/smp.c | |
| parent | [PATCH] ppc: Fix io.h for config with CONFIG_PCI not set (diff) | |
| parent | [XFRM]: Fix aevent structuring to be more complete. (diff) | |
| download | linux-79acbb3ff2d8095b692e1502b9eb2ccec348de26.tar.xz linux-79acbb3ff2d8095b692e1502b9eb2ccec348de26.zip | |
Merge branch 'linux-2.6' into for-linus
Diffstat (limited to 'arch/ia64/kernel/smp.c')
| -rw-r--r-- | arch/ia64/kernel/smp.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c index 657ac99a451c..6ab95ceaf9d4 100644 --- a/arch/ia64/kernel/smp.c +++ b/arch/ia64/kernel/smp.c @@ -108,7 +108,7 @@ cpu_die(void) } irqreturn_t -handle_IPI (int irq, void *dev_id, struct pt_regs *regs) +handle_IPI (int irq, void *dev_id) { int this_cpu = get_cpu(); unsigned long *pending_ipis = &__ia64_per_cpu_var(ipi_operation); @@ -328,10 +328,14 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic, int wait) { struct call_data_struct data; - int cpus = num_online_cpus()-1; + int cpus; - if (!cpus) + spin_lock(&call_lock); + cpus = num_online_cpus() - 1; + if (!cpus) { + spin_unlock(&call_lock); return 0; + } /* Can deadlock when called with interrupts disabled */ WARN_ON(irqs_disabled()); @@ -343,8 +347,6 @@ smp_call_function (void (*func) (void *info), void *info, int nonatomic, int wai if (wait) atomic_set(&data.finished, 0); - spin_lock(&call_lock); - call_data = &data; mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC */ send_IPI_allbutself(IPI_CALL_FUNC); |