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authorMarcin Nowakowski <marcin.nowakowski@imgtec.com>2017-04-07 14:40:28 +0300
committerRalf Baechle <ralf@linux-mips.org>2017-04-12 14:52:14 +0300
commit1f83f5e42b5b17f844955b49e986c3f1f187dd54 (patch)
tree9ebb381797b435e6bb54070bfdb8e50d67c6ed9c /arch/mips
parent8bcd84a4a37c88d8304ca3a64f0461a51487e239 (diff)
downloadlinux-1f83f5e42b5b17f844955b49e986c3f1f187dd54.tar.xz
MIPS: Use common outgoing-CPU-notification code
Replace the open-coded CPU-offline notification with common code. In particular avoid calling scheduler code using RCU from an offline CPU that RCU is ignoring. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15921/ Patchwork: https://patchwork.linux-mips.org/patch/15953/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/kernel/smp-cps.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 6d45f05538c8..306b4a64cb8f 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -8,6 +8,7 @@
* option) any later version.
*/
+#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/irqchip/mips-gic.h>
@@ -408,7 +409,6 @@ static int cps_cpu_disable(void)
return 0;
}
-static DECLARE_COMPLETION(cpu_death_chosen);
static unsigned cpu_death_sibling;
static enum {
CPU_DEATH_HALT,
@@ -444,7 +444,7 @@ void play_dead(void)
}
/* This CPU has chosen its way out */
- complete(&cpu_death_chosen);
+ (void)cpu_report_death();
if (cpu_death == CPU_DEATH_HALT) {
vpe_id = cpu_vpe_id(&cpu_data[cpu]);
@@ -493,8 +493,7 @@ static void cps_cpu_die(unsigned int cpu)
int err;
/* Wait for the cpu to choose its way out */
- if (!wait_for_completion_timeout(&cpu_death_chosen,
- msecs_to_jiffies(5000))) {
+ if (!cpu_wait_death(cpu, 5)) {
pr_err("CPU%u: didn't offline\n", cpu);
return;
}