diff options
| author | Cédric Le Goater <clg@kaod.org> | 2021-07-19 15:06:14 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-08-10 23:15:01 +1000 |
| commit | 17df41fec5b80b16ea4774495f1eb730e2225619 (patch) | |
| tree | 3da34c823cc4ba4a235e8c921d462c8a32a02fb4 | |
| parent | 59b2bc18b1492b46d45b6b6828ba098f09b9ba67 (diff) | |
powerpc: use IRQF_NO_DEBUG for IPIs
There is no need to use the lockup detector ("noirqdebug") for IPIs.
The ipistorm benchmark measures a ~10% improvement on high systems
when this flag is set.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210719130614.195886-1-clg@kaod.org
| -rw-r--r-- | arch/powerpc/sysdev/xics/xics-common.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index 4a7687caec75..5c1a157a83b8 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -132,7 +132,7 @@ static void xics_request_ipi(void) * IPIs are marked IRQF_PERCPU. The handler was set in map. */ BUG_ON(request_irq(ipi, icp_ops->ipi_action, - IRQF_PERCPU | IRQF_NO_THREAD, "IPI", NULL)); + IRQF_NO_DEBUG | IRQF_PERCPU | IRQF_NO_THREAD, "IPI", NULL)); } void __init xics_smp_probe(void) diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index d0deaebbfeeb..4018964bbd69 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1149,7 +1149,8 @@ static int __init xive_request_ipi(void) snprintf(xid->name, sizeof(xid->name), "IPI-%d", node); ret = request_irq(xid->irq, xive_muxed_ipi_action, - IRQF_PERCPU | IRQF_NO_THREAD, xid->name, NULL); + IRQF_NO_DEBUG | IRQF_PERCPU | IRQF_NO_THREAD, + xid->name, NULL); WARN(ret < 0, "Failed to request IPI %d: %d\n", xid->irq, ret); } |