linux-toradex.git/arch/alpha/Kconfig, branch v4.3.1

alpha: select CONFIG_ARCH_USE_CMPXCHG_LOCKREF.

2015-08-31T01:01:16+00:00

On Alpha we have spinlocks that are 32b in size and an efficient
cmpxchg64 implementation, so we qualify to make use of cmpxchg backed
lockrefs. Select the ARCH_USE_CMPXCHG_LOCKREF Kconfig symbol and provide
a trivial implementation of arch_spin_value_unlocked to satisfy the
lockref code.

Using Linus' simple testcase from
http://article.gmane.org/gmane.linux.file-systems/77466 on a dual CPU
ES47 system I see around an 8% gain:

    N       Min       Max    Median       Avg      Stddev
x  30   6194580   6295654   6272504   6272514   17694.232
+  30   6731164   6786334   6767982   6764274   13738.863
Difference at 95.0% confidence
        491760 +/- 8188.17
        7.83992% +/- 0.130541%
        (Student's t, pooled s = 15840.5)

Signed-off-by: Matt Turner

alpha: expose number of page table levels on Kconfig level

2015-04-14T23:49:01+00:00

I've implemented accounting for pmd page tables as we have for pte (see
mm->nr_ptes).  It's requires a new counter in mm_struct: mm->nr_pmds.

But the feature doesn't make any sense if an architecture has PMD level
folded and it would be nice get rid of the counter in this case.

The problem is that we cannot use __PAGETABLE_PMD_FOLDED in
 due to circular dependencies:

 ->  -> 

In most cases  wants  to get definition
of struct page and struct vm_area_struct.  I've tried to split mm_struct
into separate header file to be able to user  there.

But it doesn't fly on some architectures, like ARM: it wants mm_struct
 to implement tlb flushing.  I don't see how to fix it
without massive de-inlining or coverting a lot for inline functions to
macros.

This is other approach: expose number of page tables in use via Kconfig
and use it in  instead of __PAGETABLE_PMD_FOLDED from
.

This patch (of 19):

We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov 
Acked-by: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Tested-by: Guenter Roeck 
Cc: "David S. Miller" 
Cc: "H. Peter Anvin" 
Cc: "James E.J. Bottomley" 
Cc: Benjamin Herrenschmidt 
Cc: Catalin Marinas 
Cc: Chris Metcalf 
Cc: David Howells 
Cc: Fenghua Yu 
Cc: Geert Uytterhoeven 
Cc: Heiko Carstens 
Cc: Helge Deller 
Cc: Ingo Molnar 
Cc: Jeff Dike 
Cc: Kirill A. Shutemov 
Cc: Koichi Yasutake 
Cc: Martin Schwidefsky 
Cc: Michael Ellerman 
Cc: Paul Mackerras 
Cc: Ralf Baechle 
Cc: Richard Weinberger 
Cc: Russell King 
Cc: Thomas Gleixner 
Cc: Tony Luck 
Cc: Will Deacon 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge git://git.infradead.org/users/eparis/audit

2014-04-12T19:38:53+00:00

Pull audit updates from Eric Paris.

* git://git.infradead.org/users/eparis/audit: (28 commits)
  AUDIT: make audit_is_compat depend on CONFIG_AUDIT_COMPAT_GENERIC
  audit: renumber AUDIT_FEATURE_CHANGE into the 1300 range
  audit: do not cast audit_rule_data pointers pointlesly
  AUDIT: Allow login in non-init namespaces
  audit: define audit_is_compat in kernel internal header
  kernel: Use RCU_INIT_POINTER(x, NULL) in audit.c
  sched: declare pid_alive as inline
  audit: use uapi/linux/audit.h for AUDIT_ARCH declarations
  syscall_get_arch: remove useless function arguments
  audit: remove stray newline from audit_log_execve_info() audit_panic() call
  audit: remove stray newlines from audit_log_lost messages
  audit: include subject in login records
  audit: remove superfluous new- prefix in AUDIT_LOGIN messages
  audit: allow user processes to log from another PID namespace
  audit: anchor all pid references in the initial pid namespace
  audit: convert PPIDs to the inital PID namespace.
  pid: get pid_t ppid of task in init_pid_ns
  audit: rename the misleading audit_get_context() to audit_take_context()
  audit: Add generic compat syscall support
  audit: Add CONFIG_HAVE_ARCH_AUDITSYSCALL
  ...

audit: Add CONFIG_HAVE_ARCH_AUDITSYSCALL

2014-03-20T14:11:10+00:00

Currently AUDITSYSCALL has a long list of architecture depencency:
       depends on AUDIT && (X86 || PARISC || PPC || S390 || IA64 || UML ||
		SPARC64 || SUPERH || (ARM && AEABI && !OABI_COMPAT) || ALPHA)
The purpose of this patch is to replace it with HAVE_ARCH_AUDITSYSCALL
for simplicity.

Signed-off-by: AKASHI Takahiro 
Acked-by: Will Deacon  (arm)
Acked-by: Richard Guy Briggs  (audit)
Acked-by: Matt Turner  (alpha)
Acked-by: Michael Ellerman  (powerpc)
Signed-off-by: Eric Paris

alpha: Enable system-call auditing support.

2014-03-20T14:11:09+00:00

Signed-off-by: Zhenglong.cai 
Signed-off-by: Matt Turner

alpha: Enable system-call auditing support.

2014-01-31T17:21:55+00:00

Signed-off-by: Zhenglong.cai 
Signed-off-by: Matt Turner

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2014-01-25T01:17:30+00:00

Pull input subsystem updates from Dmitry Torokhov:
 "Just a swath of driver fixes and cleanups, no new drivers this time
  (although ALPS now supports one of the newer protocols, more to come)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits)
  Input: wacom - add support for DTU-1031
  Input: wacom - fix wacom->shared guards for dual input devices
  Input: edt_ft5x06 - use devm_* functions where appropriate
  Input: hyperv-keyboard - pass through 0xE1 prefix
  Input: logips2pp - fix spelling s/reciver/receiver/
  Input: delete non-required instances of include 
  Input: twl4030-keypad - convert to using managed resources
  Input: twl6040-vibra - remove unneeded check for CONFIG_OF
  Input: twl4030-keypad - add device tree support
  Input: twl6040-vibra - add missing of_node_put
  Input: twl4030-vibra - add missing of_node_put
  Input: i8042 - cleanup SERIO_I8042 dependencies
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on x86
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on unicore32
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on sparc
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO for SH_CAYMAN
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on powerpc
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on mips
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on IA64
  Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on ARM/Footbridge
  ...

Kconfig: update flightly outdated CONFIG_SMP documentation

2014-01-24T00:37:01+00:00

Remove an outdated reference to "most personal computers" having only one
CPU, and change the use of "singleprocessor" and "single processor" in
CONFIG_SMP's documentation to "uniprocessor" across all arches where that
documentation is present.

Signed-off-by: Robert Graffham 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on alpha

2014-01-02T23:48:19+00:00

Architectures which might use an i8042 for serial IO to keyboard,
mouse, etc should select ARCH_MIGHT_HAVE_PC_SERIO.

Signed-off-by: Mark Salter 
Acked-by: Matt Turner 
Signed-off-by: Dmitry Torokhov

alpha: Switch to GENERIC_CLOCKEVENTS

2013-11-17T00:33:19+00:00

This allows us to get rid of some hacky code for SMP.  Get rid of
some cycle counter hackery that's now handled by generic code via
clocksource + clock_event_device objects.

Signed-off-by: Richard Henderson