linux-stable.git/arch/c6x/include/asm, branch linux-3.16.y

Make asm/word-at-a-time.h available on all architectures

2018-10-21T07:46:11+00:00

commit a6e2f029ae34f41adb6ae3812c32c5d326e1abd2 upstream.

Added the x86 implementation of word-at-a-time to the
generic version, which previously only supported big-endian.

Omitted the x86-specific load_unaligned_zeropad(), which in
any case is also not present for the existing BE-only
implementation of a word-at-a-time, and is only used under
CONFIG_DCACHE_WORD_ACCESS.

Added as a "generic-y" to the Kbuilds of all architectures
that didn't previously have it.

Signed-off-by: Chris Metcalf 
[bwh: Backported to 3.16:
 - Drop change in arch/nios2
 - Adjust context]
Signed-off-by: Ben Hutchings

c6x: drop pte_file()

2018-10-03T03:09:54+00:00

commit f5b45de9b00eb53d11ada85c61e4ea1c31ab8218 upstream.

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov 
Acked-by: Mark Salter 
Cc: Aurelien Jacquiot 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Ben Hutchings

arch,c6x: Convert smp_mb__*()

2014-04-18T09:40:34+00:00

c6x doesn't have a barrier.h and completely relies on
asm-generic/barrier.h. Therefore its smp_mb() is barrier() and we can
use the default versions that are smp_mb().

Signed-off-by: Peter Zijlstra 
Acked-by: Mark Salter 
Acked-by: Paul E. McKenney 
Link: http://lkml.kernel.org/n/tip-kl53k3pyj0rbd80jq8ralpf3@git.kernel.org
Cc: Aurelien Jacquiot 
Cc: Linus Torvalds 
Cc: Mark Salter 
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-03-31T17:59:39+00:00

Pull core locking updates from Ingo Molnar:
 "The biggest change is the MCS spinlock generalization changes from Tim
  Chen, Peter Zijlstra, Jason Low et al.  There's also lockdep
  fixes/enhancements from Oleg Nesterov, in particular a false negative
  fix related to lockdep_set_novalidate_class() usage"

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  locking/mutex: Fix debug checks
  locking/mutexes: Add extra reschedule point
  locking/mutexes: Introduce cancelable MCS lock for adaptive spinning
  locking/mutexes: Unlock the mutex without the wait_lock
  locking/mutexes: Modify the way optimistic spinners are queued
  locking/mutexes: Return false if task need_resched() in mutex_can_spin_on_owner()
  locking: Move mcs_spinlock.h into kernel/locking/
  m68k: Skip futex_atomic_cmpxchg_inatomic() test
  futex: Allow architectures to skip futex_atomic_cmpxchg_inatomic() test
  Revert "sched/wait: Suppress Sparse 'variable shadowing' warning"
  lockdep: Change lockdep_set_novalidate_class() to use _and_name
  lockdep: Change mark_held_locks() to check hlock->check instead of lockdep_no_validate
  lockdep: Don't create the wrong dependency on hlock->check == 0
  lockdep: Make held_lock->check and "int check" argument bool
  locking/mcs: Allow architecture specific asm files to be used for contended case
  locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order
  sched/wait: Suppress Sparse 'variable shadowing' warning
  hung_task/Documentation: Fix hung_task_warnings description
  locking/mcs: Allow architectures to hook in to contended paths
  locking/mcs: Micro-optimize the MCS code, add extra comments
  ...

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2014-03-07T17:52:46+00:00

Pull c6x build fix from Mark Salter:
 "Build fix for c6x"

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  c6x: fix build failure caused by cache.h

c6x: fix build failure caused by cache.h

2014-03-04T22:21:58+00:00

A patch to linux/irqflags.h uncovered a problem with c6x asm/cache.h
which causes a build failure:

/arch/c6x/include/asm/cache.h:63:20: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘c6x_cache_init’
 extern void __init c6x_cache_init(void);

The asm/cache.h was relying on linux/irqflags.h to pull in linux/init.h
but the recent patch changed that. The c6x header should have included
linux/init.h all along.

Signed-off-by: Mark Salter

locking/mcs: Allow architecture specific asm files to be used for contended case

2014-02-09T20:18:52+00:00

This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.

Signed-off-by: Tim Chen 
Cc: Scott J Norton 
Cc: Raghavendra K T 
Cc: AswinChandramouleeswaran 
Cc: George Spelvin 
Cc: Rik vanRiel 
Cc: Andrea Arcangeli 
Cc: MichelLespinasse 
Cc: Peter Hurley 
Cc: Andi Kleen 
Cc: Alex Shi 
Cc: Dave Hansen 
Cc: Tim Chen 
Cc: Arnd Bergmann 
Cc: "Figo.zhang" 
Cc: "Paul E.McKenney" 
Cc: "H. Peter Anvin" 
Cc: Davidlohr Bueso 
Cc: Waiman Long 
Cc: Ingo Molnar 
Cc: Will Deacon 
Cc: Andrew Morton 
Cc: Linus Torvalds 
Cc: Matthew R Wilcox 
Signed-off-by: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar

locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order

2014-02-09T20:17:50+00:00

We perform a clean up of the Kbuid files in each architecture.
We order the files in each Kbuild in alphabetical order
by running the below script.

for i in arch/*/include/asm/Kbuild
do
        cat $i | gawk '/^generic-y/ {
                i = 3;
                do {
                        for (; i <= NF; i++) {
                                if ($i == "\\") {
                                        getline;
                                        i = 1;
                                        continue;
                                }
                                if ($i != "")
                                        hdr[$i] = $i;
                        }
                        break;
                } while (1);
                next;
        }
        // {
                print $0;
        }
        END {
                n = asort(hdr);
                for (i = 1; i <= n; i++)
                        print "generic-y += " hdr[i];
        }' > ${i}.sorted;
        mv ${i}.sorted $i;
done

Signed-off-by: Tim Chen 
Cc: Arnd Bergmann 
Cc: Matthew R Wilcox 
Cc: AswinChandramouleeswaran 
Cc: Dave Hansen 
Cc: "Paul E.McKenney" 
Cc: Scott J Norton 
Cc: Will Deacon 
Cc: "Figo.zhang" 
Cc: Linus Torvalds 
Cc: Rik van Riel 
Cc: Waiman Long 
Cc: Peter Hurley 
Cc: Andrea Arcangeli 
Cc: Tim Chen 
Cc: Alex Shi 
Cc: Raghavendra K T 
Cc: Andi Kleen 
Cc: George Spelvin 
Cc: MichelLespinasse 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Cc: Davidlohr Bueso 
Cc: Andrew Morton 
Signed-off-by: Peter Zijlstra 
[ Fixed build bug. ]
Signed-off-by: Ingo Molnar

lib: Add missing arch generic-y entries for asm-generic/hash.h

2013-12-18T02:26:19+00:00

Reported-by: Stephen Rothwell 
Signed-off-by: David S. Miller

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-11-19T18:40:00+00:00

Pull irq cleanups from Ingo Molnar:
 "This is a multi-arch cleanup series from Thomas Gleixner, which we
  kept to near the end of the merge window, to not interfere with
  architecture updates.

  This series (motivated by the -rt kernel) unifies more aspects of IRQ
  handling and generalizes PREEMPT_ACTIVE"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  preempt: Make PREEMPT_ACTIVE generic
  sparc: Use preempt_schedule_irq
  ia64: Use preempt_schedule_irq
  m32r: Use preempt_schedule_irq
  hardirq: Make hardirq bits generic
  m68k: Simplify low level interrupt handling code
  genirq: Prevent spurious detection for unconditionally polled interrupts