Commit-ID: 0dd945ff4647a1f29c6ae8f4f9a69c8f37c994cf
Gitweb: http://git.kernel.org/tip/0dd945ff4647a1f29c6ae8f4f9a69c8f37c994cf
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 20 Jun 2017 01:37:25 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 22 Jun 2017 18:21:16 +0200
genirq/cpuhotplug: Remove irq disabling logic
This is called from stop_machine() with interrupts disabled. No point in
disabling them some more.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Keith Busch <keith.busch@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Link: http://lkml.kernel.org/r/20170619235445.198042748@xxxxxxxxxxxxx
---
kernel/irq/cpuhotplug.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/kernel/irq/cpuhotplug.c b/kernel/irq/cpuhotplug.c
index 011f8c4..7051398 100644
--- a/kernel/irq/cpuhotplug.c
+++ b/kernel/irq/cpuhotplug.c
@@ -59,11 +59,8 @@ static bool migrate_one_irq(struct irq_desc *desc)
*/
void irq_migrate_all_off_this_cpu(void)
{
- unsigned int irq;
struct irq_desc *desc;
- unsigned long flags;
-
- local_irq_save(flags);
+ unsigned int irq;
for_each_active_irq(irq) {
bool affinity_broken;
@@ -73,10 +70,9 @@ void irq_migrate_all_off_this_cpu(void)
affinity_broken = migrate_one_irq(desc);
raw_spin_unlock(&desc->lock);
- if (affinity_broken)
- pr_warn_ratelimited("IRQ%u no longer affine to CPU%u\n",
+ if (affinity_broken) {
+ pr_warn_ratelimited("IRQ %u: no longer affine to CPU%u\n",
irq, smp_processor_id());
+ }
}
-
- local_irq_restore(flags);
}
--
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