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Groups > linux.kernel > #1681309
| From | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus |
| Date | 2017-07-05 08:50 +0200 |
| Message-ID | <tZMil-2GU-3@gated-at.bofh.it> (permalink) |
| References | <tzGUW-48t-7@gated-at.bofh.it> <tOK0y-1qd-19@gated-at.bofh.it> <tZa3s-2gz-117@gated-at.bofh.it> <tZrQC-5Zf-25@gated-at.bofh.it> <tZJaO-CS-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, 5 Jul 2017, Chen Yu wrote: > On Tue, Jul 04, 2017 at 10:50:33AM +0200, Thomas Gleixner wrote: > Here's the test result for affinity: > # uname -r > 4.12.0+ > # cat /proc/irq/32/smp_affinity > 00000000,80000000 > # echo 0 > /sys/devices/system/cpu/cpu31/online > # cat /proc/irq/32/smp_affinity > 00000000,ffffffff > Looks like cpu31 is till included in the irq mask. Yes, because the offline broke affinity and now it's reset to the default affinity mask. /proc/irq/*/affinity is the affinity which is allowed by the admin, not the one which is effective. Look at /proc/irq/32/effective_affinity to see where it's really routed to. Thanks, tglx
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Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus Chen Yu <yu.c.chen@intel.com> - 2017-07-03 16:00 +0200
Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus Thomas Gleixner <tglx@linutronix.de> - 2017-07-04 11:00 +0200
Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus Chen Yu <yu.c.chen@intel.com> - 2017-07-05 05:30 +0200
Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus Thomas Gleixner <tglx@linutronix.de> - 2017-07-05 08:50 +0200
Re: [PATCH][RFC] x86: Fix the irq affinity in fixup_cpus Chen Yu <yu.c.chen@intel.com> - 2017-07-05 16:20 +0200
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