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This patch adds a new kernel debug feature: CONFIG_DETECT_SOFTLOCKUP. When enabled then per-CPU watchdog threads are started, which try to run once per second. If they get delayed for more than 10 seconds then a callback from the timer interrupt detects this condition and prints out a warning message and a stack dump (once per lockup incident). The feature is otherwise non-intrusive, it doesnt try to unlock the box in any way, it only gets the debug info out, automatically, and on all CPUs affected by the lockup. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| .. | ||
| au1550nd.c | ||
| autcpu12.c | ||
| diskonchip.c | ||
| edb7312.c | ||
| h1910.c | ||
| Kconfig | ||
| Makefile | ||
| nand_base.c | ||
| nand_bbt.c | ||
| nand_ecc.c | ||
| nand_ids.c | ||
| nandsim.c | ||
| ppchameleonevb.c | ||
| rtc_from4.c | ||
| s3c2410.c | ||
| sharpsl.c | ||
| spia.c | ||
| toto.c | ||