linux-kernel - [PATCH v4 0/2] PM / Hibernate: sysfs resume

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Message-Id: <1391039304-3172-1-git-send-email-sebastian.capella@linaro.org>
Date:	Wed, 29 Jan 2014 15:48:22 -0800
From:	Sebastian Capella <sebastian.capella@...aro.org>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-pm@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	patches@...aro.org
Subject: [PATCH v4 0/2] PM / Hibernate: sysfs resume

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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