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Subject[PATCH v4 0/2] PM / Hibernate: sysfs resume
Date
Patchset related to hibernation resume:
- enhancement to make the use of an existing resume file more general
- add kstrimdup function which trims and duplicates a string

Both patches are based on the 3.13 tag. This was tested on a
Beaglebone black with partial hibernation support, and compiled for
x86_64.

[PATCH v4 1/2] mm: add kstrimdup function
include/linux/string.h | 1 +
mm/util.c | 19 +++++++++++++++++++
2 files changed, 20 insertions(+)

Adds the kstrimdup function to duplicate and trim whitespace
from a string. This is useful for working with user input to
sysfs.

[PATCH v4 2/2] PM / Hibernate: use name_to_dev_t to parse resume
kernel/power/hibernate.c | 33
+++++++++++++++++----------------
1 file changed, 17 insertions(+), 16 deletions(-)

Use name_to_dev_t to parse the /sys/power/resume file making the
syntax more flexible. It supports the previous use syntax
and additionally can support other formats such as
/dev/devicenode and UUID= formats.

By changing /sys/debug/resume to accept the same syntax as
the resume=device parameter, we can parse the resume=device
in the initrd init script and use the resume device directly
from the kernel command line.

Changes in v4:
--------------
* Dropped name_to_dev_t rework in favor of adding kstrimdup
* adjusted resume_store

Changes in v3:
--------------
* Dropped documentation patch as it went in through trivial
* Added patch for name_to_dev_t to support directly parsing userspace
buffer

Changes in v2:
--------------
* Added check for null return of kstrndup in hibernate.c


Thanks,

Sebastian




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