The patch titled
swsusp: document testing code
has been removed from the -mm tree. Its filename was
swsusp-debugging-doc.patch
This patch was dropped because it was folded into swsusp-debugging.patch
------------------------------------------------------
Subject: swsusp: document testing code
From: "Rafael J. Wysocki" <rjw@xxxxxxx>
Update the swsusp documentation to cover the recently introduced testing code.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
Documentation/ABI/testing/sysfs-power | 17 ++++++++++++++++-
Documentation/power/interface.txt | 13 +++++++++++++
2 files changed, 29 insertions(+), 1 deletion(-)
diff -puN Documentation/ABI/testing/sysfs-power~swsusp-debugging-doc Documentation/ABI/testing/sysfs-power
--- a/Documentation/ABI/testing/sysfs-power~swsusp-debugging-doc
+++ a/Documentation/ABI/testing/sysfs-power
@@ -21,7 +21,7 @@ Description:
these states.
What: /sys/power/disk
-Date: August 2006
+Date: September 2006
Contact: Rafael J. Wysocki <rjw@xxxxxxx>
Description:
The /sys/power/disk file controls the operating mode of the
@@ -39,6 +39,19 @@ Description:
'reboot' - the memory image will be saved by the kernel and
the system will be rebooted.
+ Additionally, /sys/power/disk can be used to turn on one of the
+ two testing modes of the suspend-to-disk mechanism: 'testproc'
+ or 'test'. If the suspend-to-disk mechanism is in the
+ 'testproc' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, wait for 5
+ seconds, unfreeze tasks and enable nonboot CPUs. If it is in
+ the 'test' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, shrink
+ memory, suspend devices, wait for 5 seconds, resume devices,
+ unfreeze tasks and enable nonboot CPUs. Then, we are able to
+ look in the log messages and work out, for example, which code
+ is being slow and which device drivers are misbehaving.
+
The suspend-to-disk method may be chosen by writing to this
file one of the accepted strings:
@@ -46,6 +59,8 @@ Description:
'platform'
'shutdown'
'reboot'
+ 'testproc'
+ 'test'
It will only change to 'firmware' or 'platform' if the system
supports that.
diff -puN Documentation/power/interface.txt~swsusp-debugging-doc Documentation/power/interface.txt
--- a/Documentation/power/interface.txt~swsusp-debugging-doc
+++ a/Documentation/power/interface.txt
@@ -30,6 +30,17 @@ testing). The system will support either
that is known a priori. But, the user may choose 'shutdown' or
'reboot' as alternatives.
+Additionally, /sys/power/disk can be used to turn on one of the two testing
+modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the
+suspend-to-disk mechanism is in the 'testproc' mode, writing 'disk' to
+/sys/power/state will cause the kernel to disable nonboot CPUs and freeze
+tasks, wait for 5 seconds, unfreeze tasks and enable nonboot CPUs. If it is
+in the 'test' mode, writing 'disk' to /sys/power/state will cause the kernel
+to disable nonboot CPUs and freeze tasks, shrink memory, suspend devices, wait
+for 5 seconds, resume devices, unfreeze tasks and enable nonboot CPUs. Then,
+we are able to look in the log messages and work out, for example, which code
+is being slow and which device drivers are misbehaving.
+
Reading from this file will display what the mode is currently set
to. Writing to this file will accept one of
@@ -37,6 +48,8 @@ to. Writing to this file will accept one
'platform'
'shutdown'
'reboot'
+ 'testproc'
+ 'test'
It will only change to 'firmware' or 'platform' if the system supports
it.
_
Patches currently in -mm which might be from rjw@xxxxxxx are
swsusp-debugging.patch
swsusp-debugging-doc.patch
revert-pci-i386-x86_84-disable-pci-resource-decode-on-device-disable.patch
uswsusp-add-pmops-prepareenterfinish-support-aka-platform-mode.patch
swsusp-use-partition-device-and-offset-to-identify-swap-areas.patch
swsusp-rearrange-swap-handling-code.patch
swsusp-use-block-device-offsets-to-identify-swap-locations-rev-2.patch
swsusp-add-resume_offset-command-line-parameter-rev-2.patch
swsusp-document-support-for-swap-files-rev-2.patch
swsusp-add-ioctl-for-swap-files-support.patch
swsusp-update-userland-interface-documentation.patch
swsusp-improve-handling-of-highmem.patch
swsusp-improve-handling-of-highmem-fix.patch
swsusp-use-__gfp_wait.patch
swsusp-fix-platform-mode.patch
add-include-linux-freezerh-and-move-definitions-from.patch
add-include-linux-freezerh-and-move-definitions-from-ueagle-fix.patch
quieten-freezer-if-config_pm_debug.patch
swsusp-cleanup-whitespace-in-freezer-output.patch
swsusp-thaw-userspace-and-kernel-space-separately.patch
swsusp-support-i386-systems-with-pae-or-without-pse.patch
swsusp-freeze-filesystems-during-suspend-rev-2.patch
swsusp-freeze-filesystems-during-suspend-rev-2-comments.patch
swsusp-use-platform-mode-by-default.patch
suspend-dont-change-cpus_allowed-for-task-initiating-the-suspend.patch
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