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| author | Andrew Morton <akpm@osdl.org> | 2006-06-27 09:53:26 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 00:32:35 (GMT) |
| commit | 5c31f2738ab124ebc1f8948a5fc17dd7a08ed1ec (patch) | |
| tree | 87b8f11652781ee6c50422ba42976f634ca2cd89 | |
| parent | b762450e84e20a179ee5993b065caaad99a65fbf (diff) | |
| download | linux-5c31f2738ab124ebc1f8948a5fc17dd7a08ed1ec.tar.xz | |
[PATCH] pm_trace is dangerous
CONFIG_PM_TRACES scrogs your RTC. Mark it as experimental, and defaulting to
`off'.
Also beef up the help message a bit.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | kernel/power/Kconfig | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index fc311a4..857b4fa 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -38,13 +38,22 @@ config PM_DEBUG config PM_TRACE bool "Suspend/resume event tracing" - depends on PM && PM_DEBUG && X86_32 - default y + depends on PM && PM_DEBUG && X86_32 && EXPERIMENTAL + default n ---help--- This enables some cheesy code to save the last PM event point in the RTC across reboots, so that you can debug a machine that just hangs during suspend (or more commonly, during resume). + To use this debugging feature you should attempt to suspend the machine, + then reboot it, then run + + dmesg -s 1000000 | grep 'hash matches' + + CAUTION: this option will cause your machine's real-time clock to be + set to an invalid time after a resume. + + config SOFTWARE_SUSPEND bool "Software Suspend" depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP) |