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authorLinus Torvalds <torvalds@g5.osdl.org>2006-06-24 14:27:42 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-24 14:44:01 -0700
commiteb71c87a492b7090ff9e8ac46912c480a1687e38 (patch)
tree1136213dee0f942866b6c2c65de7e7c63ca94fda /kernel/power
parentd384ea691fe4ea8c2dd5b9b8d9042eb181776f18 (diff)
Add some basic resume trace facilities
Considering that there isn't a lot of hw we can depend on during resume, this is about as good as it gets. This is x86-only for now, although the basic concept (and most of the code) will certainly work on almost any platform. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index ce0dfb8f4a4..cdf315e794f 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -36,6 +36,15 @@ config PM_DEBUG
code. This is helpful when debugging and reporting various PM bugs,
like suspend support.
+config PM_TRACE
+ bool "Suspend/resume event tracing"
+ depends on PM && PM_DEBUG && X86
+ default y
+ ---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).
+
config SOFTWARE_SUSPEND
bool "Software Suspend"
depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP)