Displaying 3 results from an estimated 3 matches for "__irq_work_queue".
2012 Apr 20
1
[PATCH v2 0/2] fix "perf top" soft lockups under Xen
...IG_SMP, Konrad Rzeszutek Wilk
- move inc_irq_stat after irq_work_run
These 2 patches fixed the "perf top" soft lockups under Xen
reported by Steven at: https://lkml.org/lkml/2012/2/9/506
Both Steven and I tested it and "perf top" works well now.
The soft lockup code path is:
__irq_work_queue
arch_irq_work_raise
apic->send_IPI_self(IRQ_WORK_VECTOR);
apic_send_IPI_self
__default_send_IPI_shortcut
__xapic_wait_icr_idle
static inline void __xapic_wait_icr_idle(void)
{
while (native_apic_mem_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_re...
2012 Apr 15
0
(no subject)
Hi all,
These 2 patches try to fix the "perf top" soft lockups under Xen
reported by Steven at: https://lkml.org/lkml/2012/2/9/506
I tested it with 3.4-rc2 and "perf top" works well now.
Steven,
Could you please help to test it too?
The soft lockup code path is:
__irq_work_queue
arch_irq_work_raise
apic->send_IPI_self(IRQ_WORK_VECTOR);
apic_send_IPI_self
__default_send_IPI_shortcut
__xapic_wait_icr_idle
static inline void __xapic_wait_icr_idle(void)
{
while (native_apic_mem_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_re...
2012 Apr 15
0
Re: [PATCH 0/2] fix "perf top" soft lockups under Xen
...x the "perf top" soft lockups under Xen
> reported by Steven at: https://lkml.org/lkml/2012/2/9/506
>
> I tested it with 3.4-rc2 and "perf top" works well now.
>
> Steven,
> Could you please help to test it too?
>
> The soft lockup code path is:
>
> __irq_work_queue
> arch_irq_work_raise
> apic->send_IPI_self(IRQ_WORK_VECTOR);
> apic_send_IPI_self
> __default_send_IPI_shortcut
> __xapic_wait_icr_idle
>
> static inline void __xapic_wait_icr_idle(void)
> {
> while (native_apic_mem_read(APIC_ICR) &...