irq-metag*: stop set_affinity vectoring to offline cpus
Fix irq_set_affinity callbacks in the Meta IRQ chip drivers to AND cpu_online_mask into the cpumask when picking a CPU to vector the interrupt to. As Thomas pointed out, the /proc/irq/$N/smp_affinity interface doesn't filter out offline CPUs, so without this patch if you offline CPU0 and set an IRQ affinity to 0x3 it vectors the interrupt onto CPU0 even though it is offline. Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-metag@vger.kernel.org Cc: stable@vger.kernel.org
This commit is contained in:
parent
e6cfc0295c
commit
f229006ec6
2 changed files with 2 additions and 2 deletions
|
@ -515,7 +515,7 @@ static int meta_intc_set_affinity(struct irq_data *data,
|
|||
* one cpu (the interrupt code doesn't support it), so we just
|
||||
* pick the first cpu we find in 'cpumask'.
|
||||
*/
|
||||
cpu = cpumask_any(cpumask);
|
||||
cpu = cpumask_any_and(cpumask, cpu_online_mask);
|
||||
thread = cpu_2_hwthread_id[cpu];
|
||||
|
||||
metag_out32(TBI_TRIG_VEC(TBID_SIGNUM_TR2(thread)), vec_addr);
|
||||
|
|
|
@ -201,7 +201,7 @@ static int metag_internal_irq_set_affinity(struct irq_data *data,
|
|||
* one cpu (the interrupt code doesn't support it), so we just
|
||||
* pick the first cpu we find in 'cpumask'.
|
||||
*/
|
||||
cpu = cpumask_any(cpumask);
|
||||
cpu = cpumask_any_and(cpumask, cpu_online_mask);
|
||||
thread = cpu_2_hwthread_id[cpu];
|
||||
|
||||
metag_out32(TBI_TRIG_VEC(TBID_SIGNUM_TR1(thread)),
|
||||
|
|
Loading…
Reference in a new issue