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PM: Add initcall_debug style timing for suspend/resume

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In order to diagnose overall suspend/resume times, we need
basic instrumentation to break down the total time into per
device timing, similar to initcall_debug.

This patch adds the basic timing instrumentation, needed
for a scritps/bootgraph.pl equivalent or humans.
The bootgraph.pl program is still a work in progress, but
is far enough along to know that this patch is sufficient.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Arjan van de Ven 2009-12-13 20:29:01 +01:00 • committed by Rafael J. Wysocki
parent 1d531c14d2
commit f251177486
2 changed files with 33 additions and 0 deletions
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2
include/linux/init.h
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@ -149,6 +149,8 @@ void prepare_namespace(void);
extern void (*late_time_init)(void);
extern int initcall_debug;
#endif
#ifndef MODULE