X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Flib%2Fdump_stack.c;h=c30d07e99dba4cc32be6aeb4d353d79058509b4b;hb=2dd9dea0edaf1157e4cb914240821d22fe1ca5b0;hp=7ccbc6ff80eac1db3ecbbb87a586d1bbac99f09b;hpb=41f827bfbb10e03c4d228fbcc801dd51fb9983b0;p=kvmfornfv.git

diff --git a/kernel/lib/dump_stack.c b/kernel/lib/dump_stack.c
index 7ccbc6ff8..c30d07e99 100644
--- a/kernel/lib/dump_stack.c
+++ b/kernel/lib/dump_stack.c
@@ -25,6 +25,7 @@ static atomic_t dump_lock = ATOMIC_INIT(-1);
 
 asmlinkage __visible void dump_stack(void)
 {
+	unsigned long flags;
 	int was_locked;
 	int old;
 	int cpu;
@@ -33,9 +34,8 @@ asmlinkage __visible void dump_stack(void)
 	 * Permit this cpu to perform nested stack dumps while serialising
 	 * against other CPUs
 	 */
-	migrate_disable();
-
 retry:
+	local_irq_save(flags);
 	cpu = smp_processor_id();
 	old = atomic_cmpxchg(&dump_lock, -1, cpu);
 	if (old == -1) {
@@ -43,6 +43,7 @@ retry:
 	} else if (old == cpu) {
 		was_locked = 1;
 	} else {
+		local_irq_restore(flags);
 		cpu_relax();
 		goto retry;
 	}
@@ -52,7 +53,7 @@ retry:
 	if (!was_locked)
 		atomic_set(&dump_lock, -1);
 
-	migrate_enable();
+	local_irq_restore(flags);
 }
 #else
 asmlinkage __visible void dump_stack(void)