Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1356241
| From | "Luck, Tony" <tony.luck@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() |
| Date | 2016-03-11 23:40 +0100 |
| Message-ID | <rbDSW-4EW-3@gated-at.bofh.it> (permalink) |
| References | <rbBR8-38o-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
With this patch applied my system survives me doing several rounds of: # echo 0 | tee /sys/devices/system/cpu/cpu*/online # echo 1 | tee /sys/devices/system/cpu/cpu*/online whereas without the patch the first of those went to [152455.129604] NMI watchdog: Watchdog detected hard LOCKUP on cpu 96 [152455.136943] Kernel panic - not syncing: Hard LOCKUP I'm not sure we care to optimize the cpu offline path, but I'll note here that taking all (but one) cpus offline took 52 seconds (for a hundred and mumble logical cpus). Bringing them all back is just 4 seconds. Tested-by: Tony Luck <tony.luck@intel.com>
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH] x86/irq: Cure live lock in irq_force_complete_move() Thomas Gleixner <tglx@linutronix.de> - 2016-03-11 21:30 +0100
Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() "Luck, Tony" <tony.luck@intel.com> - 2016-03-11 23:40 +0100
Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() Thomas Gleixner <tglx@linutronix.de> - 2016-03-12 09:30 +0100
Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() Thomas Gleixner <tglx@linutronix.de> - 2016-03-12 12:00 +0100
Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() Ingo Molnar <mingo@kernel.org> - 2016-03-12 16:30 +0100
Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() Thomas Gleixner <tglx@linutronix.de> - 2016-03-12 21:00 +0100
csiph-web