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-rw-r--r--arch/x86/kernel/smp.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index beea2649a240..e6faa3316bd2 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -1,7 +1,7 @@
/*
* Intel SMP support routines.
*
- * (c) 1995 Alan Cox, Building #3 <alan@redhat.com>
+ * (c) 1995 Alan Cox, Building #3 <alan@lxorguk.ukuu.org.uk>
* (c) 1998-99, 2000 Ingo Molnar <mingo@redhat.com>
* (c) 2002,2003 Andi Kleen, SuSE Labs.
*
@@ -128,16 +128,23 @@ void native_send_call_func_single_ipi(int cpu)
void native_send_call_func_ipi(const struct cpumask *mask)
{
- cpumask_t allbutself;
+ cpumask_var_t allbutself;
- allbutself = cpu_online_map;
- cpu_clear(smp_processor_id(), allbutself);
+ if (!alloc_cpumask_var(&allbutself, GFP_ATOMIC)) {
+ send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+ return;
+ }
- if (cpus_equal(*mask, allbutself) &&
- cpus_equal(cpu_online_map, cpu_callout_map))
+ cpumask_copy(allbutself, cpu_online_mask);
+ cpumask_clear_cpu(smp_processor_id(), allbutself);
+
+ if (cpumask_equal(mask, allbutself) &&
+ cpumask_equal(cpu_online_mask, cpu_callout_mask))
send_IPI_allbutself(CALL_FUNCTION_VECTOR);
else
send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+
+ free_cpumask_var(allbutself);
}
/*