Sometimes we will use the memory dump to figure out what has happened.
Flush the local cache is needed to make the memory content be updated.
Signed-off-by: Neil Zhang <neilzhang1...@hotmail.com>
---
kernel/panic.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/panic.c b/kernel/panic.c
index 8136ad7..e9457ca 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -23,6 +23,7 @@
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/nmi.h>
+#include <asm/cacheflush.h>
#define PANIC_TIMER_STEP 100
#define PANIC_BLINK_SPD 18
@@ -56,6 +57,8 @@ EXPORT_SYMBOL(panic_blink);
*/
void __weak panic_smp_self_stop(void)
{
+ flush_cache_all();
+
while (1)
cpu_relax();
}
--
1.7.9.5
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