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Subject[tip:irq/core] softirq: Use __this_cpu_write() in takeover_tasklets()
Commit-ID:  8afecaa68df1e94a9d634f1f961533a925f239fc
Gitweb: https://git.kernel.org/tip/8afecaa68df1e94a9d634f1f961533a925f239fc
Author: Muchun Song <smuchun@gmail.com>
AuthorDate: Tue, 18 Jun 2019 22:33:05 +0800
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Sun, 23 Jun 2019 18:14:27 +0200

softirq: Use __this_cpu_write() in takeover_tasklets()

The code is executed with interrupts disabled, so it's safe to use
__this_cpu_write().

[ tglx: Massaged changelog ]

Signed-off-by: Muchun Song <smuchun@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: joel@joelfernandes.org
Cc: rostedt@goodmis.org
Cc: frederic@kernel.org
Cc: paulmck@linux.vnet.ibm.com
Cc: alexander.levin@verizon.com
Cc: peterz@infradead.org
Link: https://lkml.kernel.org/r/20190618143305.2038-1-smuchun@gmail.com

---
kernel/softirq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 2c3382378d94..eaf3bdf7c749 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -650,7 +650,7 @@ static int takeover_tasklets(unsigned int cpu)
/* Find end, append list for that CPU. */
if (&per_cpu(tasklet_vec, cpu).head != per_cpu(tasklet_vec, cpu).tail) {
*__this_cpu_read(tasklet_vec.tail) = per_cpu(tasklet_vec, cpu).head;
- this_cpu_write(tasklet_vec.tail, per_cpu(tasklet_vec, cpu).tail);
+ __this_cpu_write(tasklet_vec.tail, per_cpu(tasklet_vec, cpu).tail);
per_cpu(tasklet_vec, cpu).head = NULL;
per_cpu(tasklet_vec, cpu).tail = &per_cpu(tasklet_vec, cpu).head;
}
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