https://github.com/torvalds/linux
Revision f8953856eb8dd62232aee6cacb46993dc2ac4869 authored by Thomas Gleixner on 06 March 2007, 09:42:08 UTC, committed by Linus Torvalds on 06 March 2007, 17:30:25 UTC
The TIMER_SOFTIRQ runs the hrtimers during bootup until a usable clocksource and clock event sources are registered. The switch to high resolution mode happens inside of the TIMER_SOFTIRQ, but runs the softirq afterwards. That way the tick emulation timer, which was set up in the switch to highres might be executed in the softirq context, which is a BUG. The rbtree has not to be touched by the softirq after the highres switch. This BUG was observed by Andres Salomon, who provided the information to debug it. Return early from the softirq, when the switch was sucessful. [dilinger@debian.org: add debug warning] [akpm@linux-foundation.org: make debug warning compile] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andres Salomon <dilinger@debian.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andres Salomon <dilinger@debian.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: f8953856eb8dd62232aee6cacb46993dc2ac4869 authored by Thomas Gleixner on 06 March 2007, 09:42:08 UTC
[PATCH] highres: do not run the TIMER_SOFTIRQ after switching to highres mode
[PATCH] highres: do not run the TIMER_SOFTIRQ after switching to highres mode
Tip revision: f895385
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| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| scripts | ||
| security | ||
| sound | ||
| usr | ||
| .gitignore | -rw-r--r-- | 572 bytes |
| .mailmap | -rw-r--r-- | 3.5 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 88.9 KB |
| Kbuild | -rw-r--r-- | 1.2 KB |
| MAINTAINERS | -rw-r--r-- | 82.0 KB |
| Makefile | -rw-r--r-- | 49.1 KB |
| README | -rw-r--r-- | 16.5 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.0 KB |
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