summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAndrew Morton <akpm@osdl.org>2006-06-27 02:53:26 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:35 -0700
commit5c31f2738ab124ebc1f8948a5fc17dd7a08ed1ec (patch)
tree87b8f11652781ee6c50422ba42976f634ca2cd89
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>
-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
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)