X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=lib%2Fnmi_backtrace.c;h=06410209197aee05849a696c1edde35060fdee98;hb=refs%2Fheads%2Faccepted%2Ftizen_8.0_unified;hp=f9e89001b52ebdc08e3f5e6afa8c44fbf576844d;hpb=eadeb06e7645f7a7ddbcfac39480be3892a60ae3;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
index f9e8900..06410209 100644
--- a/lib/nmi_backtrace.c
+++ b/lib/nmi_backtrace.c
@@ -75,6 +75,12 @@ void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
 		touch_softlockup_watchdog();
 	}
 
+	/*
+	 * Force flush any remote buffers that might be stuck in IRQ context
+	 * and therefore could not run their irq_work.
+	 */
+	printk_trigger_flush();
+
 	clear_bit_unlock(0, &backtrace_flag);
 	put_cpu();
 }
@@ -93,7 +99,7 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
 		 * Allow nested NMI backtraces while serializing
 		 * against other CPUs.
 		 */
-		printk_cpu_lock_irqsave(flags);
+		raw_printk_cpu_lock_irqsave(flags);
 		if (!READ_ONCE(backtrace_idle) && regs && cpu_in_idle(instruction_pointer(regs))) {
 			pr_warn("NMI backtrace for cpu %d skipped: idling at %pS\n",
 				cpu, (void *)instruction_pointer(regs));
@@ -104,7 +110,7 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
 			else
 				dump_stack();
 		}
-		printk_cpu_unlock_irqrestore(flags);
+		raw_printk_cpu_unlock_irqrestore(flags);
 		cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
 		return true;
 	}