diff options
| author | Thomas Gleixner <[email protected]> | 2015-12-31 16:30:52 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2016-01-15 13:44:01 +0100 |
| commit | 56d7d2f4bbd00fb198b7907cb3ab657d06115a42 (patch) | |
| tree | 68abc85548849ef65c4501c647e1ae3e2d0015be | |
| parent | 5da0c1217f05d2ccc9a8ed6e6e5c23a8a1d24dd6 (diff) | |
x86/irq: Remove outgoing CPU from vector cleanup mask
We want to synchronize new vector assignments with a pending cleanup. Remove a
dying cpu from a pending cleanup mask.
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Tested-by: Joe Lawrence <[email protected]>
Cc: Jiang Liu <[email protected]>
Cc: Jeremiah Mahler <[email protected]>
Cc: [email protected]
Cc: Guenter Roeck <[email protected]>
Cc: [email protected] #4.3+
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
| -rw-r--r-- | arch/x86/kernel/apic/vector.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 91dc2742cfb1..a7fa11e49582 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -633,9 +633,23 @@ void irq_complete_move(struct irq_cfg *cfg) void irq_force_complete_move(int irq) { struct irq_cfg *cfg = irq_cfg(irq); + struct apic_chip_data *data; + + if (!cfg) + return; - if (cfg) - __irq_complete_move(cfg, cfg->vector); + __irq_complete_move(cfg, cfg->vector); + + /* + * Remove this cpu from the cleanup mask. The IPI might have been sent + * just before the cpu was removed from the offline mask, but has not + * been processed because the CPU has interrupts disabled and is on + * the way out. + */ + raw_spin_lock(&vector_lock); + data = container_of(cfg, struct apic_chip_data, cfg); + cpumask_clear_cpu(smp_processor_id(), data->old_domain); + raw_spin_unlock(&vector_lock); } #endif |