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authorRafael J. Wysocki <rjw@sisk.pl>2007-11-19 23:43:34 +0100
committerLen Brown <len.brown@intel.com>2008-02-01 18:30:54 -0500
commitce2b7147bb83b7d729b17c1638f092a1bcba4981 (patch)
treed059713440585840a31a174a0f4e56ad9109cbca /Documentation/power/drivers-testing.txt
parent4cc79776c9ea431790e04fcacbebb30d28eb1570 (diff)
PM: Suspend/hibernation debug documentation update (rev. 2)
Update the suspend/hibernation debugging and testing documentation to describe the newly introduced testing facilities. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/power/drivers-testing.txt')
-rw-r--r--Documentation/power/drivers-testing.txt30
1 files changed, 17 insertions, 13 deletions
diff --git a/Documentation/power/drivers-testing.txt b/Documentation/power/drivers-testing.txt
index e4bdcaee24e..7f7a737f7f9 100644
--- a/Documentation/power/drivers-testing.txt
+++ b/Documentation/power/drivers-testing.txt
@@ -6,9 +6,9 @@ Testing suspend and resume support in device drivers
Unfortunately, to effectively test the support for the system-wide suspend and
resume transitions in a driver, it is necessary to suspend and resume a fully
functional system with this driver loaded. Moreover, that should be done
-several times, preferably several times in a row, and separately for the suspend
-to disk (STD) and the suspend to RAM (STR) transitions, because each of these
-cases involves different ordering of operations and different interactions with
+several times, preferably several times in a row, and separately for hibernation
+(aka suspend to disk or STD) and suspend to RAM (STR), because each of these
+cases involves slightly different operations and different interactions with
the machine's BIOS.
Of course, for this purpose the test system has to be known to suspend and
@@ -22,20 +22,24 @@ for more information about the debugging of suspend/resume functionality.
Once you have resolved the suspend/resume-related problems with your test system
without the new driver, you are ready to test it:
-a) Build the driver as a module, load it and try the STD in the test mode (see:
-Documents/power/basic-pm-debugging.txt, 1a)).
+a) Build the driver as a module, load it and try the test modes of hibernation
+ (see: Documents/power/basic-pm-debugging.txt, 1).
-b) Load the driver and attempt to suspend to disk in the "reboot", "shutdown"
-and "platform" modes (see: Documents/power/basic-pm-debugging.txt, 1).
+b) Load the driver and attempt to hibernate in the "reboot", "shutdown" and
+ "platform" modes (see: Documents/power/basic-pm-debugging.txt, 1).
-c) Compile the driver directly into the kernel and try the STD in the test mode.
+c) Compile the driver directly into the kernel and try the test modes of
+ hibernation.
-d) Attempt to suspend to disk with the driver compiled directly into the kernel
-in the "reboot", "shutdown" and "platform" modes.
+d) Attempt to hibernate with the driver compiled directly into the kernel
+ in the "reboot", "shutdown" and "platform" modes.
-e) Attempt to suspend to RAM using the s2ram tool with the driver loaded (see:
-Documents/power/basic-pm-debugging.txt, 2). As far as the STR tests are
-concerned, it should not matter whether or not the driver is built as a module.
+e) Try the test modes of suspend (see: Documents/power/basic-pm-debugging.txt,
+ 2). [As far as the STR tests are concerned, it should not matter whether or
+ not the driver is built as a module.]
+
+f) Attempt to suspend to RAM using the s2ram tool with the driver loaded
+ (see: Documents/power/basic-pm-debugging.txt, 2).
Each of the above tests should be repeated several times and the STD tests
should be mixed with the STR tests. If any of them fails, the driver cannot be