On SMP r4k cache style systems, we cannot issue a
smp_function_call_many() like what __flush_cache_all() does *after* we
have disabled interrupts for the calling CPU. Add a special check, and
do a local cache operation instead.
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
arch/mips/mm/c-r4k.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index e7f798d55fbc..ea2998f1f5c5 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -19,6 +19,7 @@
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/bitops.h>
+#include <linux/kexec.h>
#include <asm/bcache.h>
#include <asm/bootinfo.h>
@@ -494,7 +495,10 @@ static inline void local_r4k___flush_cache_all(void * args)
static void r4k___flush_cache_all(void)
{
- r4k_on_each_cpu(R4K_INDEX, local_r4k___flush_cache_all, NULL);
+ if (!kexec_in_progress)
+ r4k_on_each_cpu(R4K_INDEX, local_r4k___flush_cache_all, NULL);
+ else
+ local_r4k___flush_cache_all(NULL);
}
/**
--
2.9.3
