linux-stable.git/arch/xtensa/include/asm, branch v3.15.2

Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux

2014-05-05T22:36:59+00:00

Pull Xtensa fixes from Chris Zankel:
 - Fixes allmodconfig, allnoconfig builds
 - Adds highmem support
 - Enables build-time exception table sorting.

* tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux:
  xtensa: ISS: don't depend on CONFIG_TTY
  xtensa: xt2000: drop redundant sysmem initialization
  xtensa: add support for KC705
  xtensa: xtfpga: introduce SoC I/O bus
  xtensa: add HIGHMEM support
  xtensa: optimize local_flush_tlb_kernel_range
  xtensa: dump sysmem from the bootmem_init
  xtensa: handle memmap kernel option
  xtensa: keep sysmem banks ordered in mem_reserve
  xtensa: keep sysmem banks ordered in add_sysmem_bank
  xtensa: split bootparam and kernel meminfo
  xtensa: enable sorting extable at build time
  xtensa: export __{invalidate,flush}_dcache_range
  xtensa: Export __invalidate_icache_range

xtensa: add HIGHMEM support

2014-04-06T17:29:21+00:00

Introduce fixmap area just below the vmalloc region. Use it for atomic
mapping of high memory pages.
High memory on cores with cache aliasing is not supported and is still
to be implemented. Fail build for such configurations for now.

Signed-off-by: Max Filippov

xtensa: optimize local_flush_tlb_kernel_range

2014-04-06T17:29:17+00:00

Don't flush whole TLB if only a small kernel range is requested.

Signed-off-by: Max Filippov

xtensa: keep sysmem banks ordered in add_sysmem_bank

2014-04-01T21:35:52+00:00

Rewrite add_sysmem_bank so that it keeps bank order and merges
adjacent/overlapping banks.

Signed-off-by: Max Filippov

xtensa: split bootparam and kernel meminfo

2014-04-01T21:35:51+00:00

Bootparam meminfo is a bootloader ABI, kernel meminfo is for the kernel
bookkeeping, keep them separate. Kernel doesn't care of memory region
types, so drop the type field and don't pass it to add_sysmem_bank.
Move kernel sysmem structures and prototypes to asm/sysmem.h and sysmem
variable and add_sysmem_bank to mm/init.c

Signed-off-by: Max Filippov

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 'xtensa-for-next-20140221-1' into for_next

2014-02-24T08:34:36+00:00

Xtensa fixes for 3.14:
- allow booting xtfpga on boards with new uBoot and >128MBytes memory;
- drop nonexistent GPIO32 support from fsf variant;
- don't select USE_GENERIC_SMP_HELPERS;
- enable common clock framework support, set up ethoc clock on xtfpga;
- wire up sched_setattr and sched_getattr syscalls.

Signed-off-by: Chris Zankel

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

xtensa: introduce spill_registers_kernel macro

2014-01-25T19:20:09+00:00

Most in-kernel users want registers spilled on the kernel stack and
don't require PS.EXCM to be set. That means that they don't need fixup
routine and could reuse regular window overflow mechanism for that,
which makes spill routine very simple.

Cc: stable@vger.kernel.org
Suggested-by: Chris Zankel 
Signed-off-by: Max Filippov