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authorAndrew Morton <akpm@osdl.org>2006-06-27 05:53:26 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 20:32:35 -0400
commit5c31f2738ab124ebc1f8948a5fc17dd7a08ed1ec (patch)
tree87b8f11652781ee6c50422ba42976f634ca2cd89 /kernel
parentb762450e84e20a179ee5993b065caaad99a65fbf (diff)
[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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/Kconfig13
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index fc311a4673a2..857b4fa09124 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -38,13 +38,22 @@ config PM_DEBUG
38 38
39config PM_TRACE 39config PM_TRACE
40 bool "Suspend/resume event tracing" 40 bool "Suspend/resume event tracing"
41 depends on PM && PM_DEBUG && X86_32 41 depends on PM && PM_DEBUG && X86_32 && EXPERIMENTAL
42 default y 42 default n
43 ---help--- 43 ---help---
44 This enables some cheesy code to save the last PM event point in the 44 This enables some cheesy code to save the last PM event point in the
45 RTC across reboots, so that you can debug a machine that just hangs 45 RTC across reboots, so that you can debug a machine that just hangs
46 during suspend (or more commonly, during resume). 46 during suspend (or more commonly, during resume).
47 47
48 To use this debugging feature you should attempt to suspend the machine,
49 then reboot it, then run
50
51 dmesg -s 1000000 | grep 'hash matches'
52
53 CAUTION: this option will cause your machine's real-time clock to be
54 set to an invalid time after a resume.
55
56
48config SOFTWARE_SUSPEND 57config SOFTWARE_SUSPEND
49 bool "Software Suspend" 58 bool "Software Suspend"
50 depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP) 59 depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP)