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  1. 28 6月, 2017 1 次提交
    • P
      vsprintf: Add %p extension "%pOF" for device tree · ce4fecf1
      由 Pantelis Antoniou 提交于 
      90% of the usage of device node's full_name is printing it out in a
kernel message. However, storing the full path for every node is
wasteful and redundant. With a custom format specifier, we can generate
the full path at run-time and eventually remove the full path from every
node.

For instance typical use is:
	pr_info("Frobbing node %s\n", node->full_name);

Which can be written now as:
	pr_info("Frobbing node %pOF\n", node);

'%pO' is the base specifier to represent kobjects with '%pOF'
representing struct device_node. Currently, struct device_node is the
only supported type of kobject.

More fine-grained control of formatting includes printing the name,
flags, path-spec name and others, explained in the documentation entry.

Originally written by Pantelis, but pretty much rewrote the core
function using existing string/number functions. The 2 passes were
unnecessary and have been removed. Also, updated the checkpatch.pl
check. The unittest code was written by Grant Likely.
Signed-off-by: NPantelis Antoniou <pantelis.antoniou@konsulko.com>
Acked-by: NJoe Perches <joe@perches.com>
Signed-off-by: NRob Herring <robh@kernel.org>
      ce4fecf1
  3. 08 6月, 2017 1 次提交
    • P
      checkpatch: Remove checks for expedited grace periods · 98953135
      由 Paul E. McKenney 提交于 
      There was a time when the expedited grace-period primitives
(synchronize_rcu_expedited(), synchronize_rcu_bh_expedited(), and
synchronize_sched_expedited()) used rather antisocial kernel
facilities like try_stop_cpus().  However, they have since been
housebroken to use only single-CPU IPIs, and typically cause less
disturbance than a scheduling-clock interrupt.  Furthermore, this
disturbance can be eliminated entirely using NO_HZ_FULL on the
one hand or the rcupdate.rcu_normal boot parameter on the other.

This commit therefore removes checkpatch's complaints about use
of the expedited RCU primitives.
Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      98953135
  5. 14 5月, 2017 1 次提交
    • K
      scripts: Switch to more portable Perl shebang · cb77f0d6
      由 Kamil Rytarowski 提交于 
      The default NetBSD package manager is pkgsrc and it installs Perl
along other third party programs under custom and configurable prefix.
The default prefix for binary prebuilt packages is /usr/pkg, and the
Perl executable lands in /usr/pkg/bin/perl.

This change switches "/usr/bin/perl" to "/usr/bin/env perl" as it's
the most portable solution that should work for almost everybody.
Perl's executable is detected automatically.

This change switches -w option passed to the executable with more
modern "use warnings;" approach. There is no functional change to the
default behavior.

While there, drop "require 5" from scripts/namespace.pl (Perl from 1994?).
Signed-off-by: NKamil Rytarowski <n54@gmx.com>
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
      cb77f0d6
  7. 09 5月, 2017 12 次提交
  9. 28 2月, 2017 1 次提交
  11. 25 2月, 2017 6 次提交
  13. 16 12月, 2016 1 次提交
  15. 13 12月, 2016 6 次提交
  17. 15 11月, 2016 1 次提交
    • P
      locking/mutex, drm: Introduce mutex_trylock_recursive() · 0f5225b0
      由 Peter Zijlstra 提交于 
      By popular DRM demand, introduce mutex_trylock_recursive() to fix up the
two GEM users.

Without this it is very easy for these drivers to get stuck in
low-memory situations and trigger OOM. Work is in progress to remove the
need for this in at least i915.
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jason Low <jason.low2@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Terry Rudd <terry.rudd@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Will Deacon <Will.Deacon@arm.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NIngo Molnar <mingo@kernel.org>
      0f5225b0
  19. 24 10月, 2016 1 次提交
  21. 12 10月, 2016 9 次提交