| Commit message (Collapse) | Author | Age | Files | Lines |
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Commits 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE
have same value for all architectures") and ef58978f1eaa ("mm: define
MADV_FREE for some arches") both defined MADV_FREE, but did not use the
same values. This results in build errors such as
./arch/alpha/include/uapi/asm/mman.h:53:0: error: "MADV_FREE" redefined
./arch/alpha/include/uapi/asm/mman.h:50:0: note: this is the location of the previous definition
for the affected architectures.
Fixes: 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all architectures")
Fixes: ef58978f1eaa ("mm: define MADV_FREE for some arches")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Chen Gang <gang.chen.5i5j@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Acked-by: Helge Deller <deller@gmx.de> [parisc]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
"Add intel punit and telemetry driver for APL SoCs.
Add intel-hid driver for various laptop hotkey support.
Add asus-wireless radio control driver.
Keyboard backlight support/improvements for ThinkPads, Vaio, and Toshiba.
Several hotkey related fixes and improvements for dell and toshiba.
Fix oops on dual GPU Macs in apple-gmux.
A few new device IDs and quirks.
Various minor config related build issues and cleanups.
surface pro 4:
- fix compare_const_fl.cocci warnings
- Add support for Surface Pro 4 Buttons
platform/x86:
- Add Intel Telemetry Debugfs interfaces
- Add Intel telemetry platform device
- Add Intel telemetry platform driver
- Add Intel Telemetry Core Driver
- add NULL check for input parameters
- add Intel P-Unit mailbox IPC driver
- update acpi resource structure for Punit
thinkpad_acpi:
- Add support for keyboard backlight
dell-wmi:
- Process only one event on devices with interface version 0
- Check if Dell WMI descriptor structure is valid
- Improve unknown hotkey handling
- Use a C99-style array for bios_to_linux_keycode
tc1100-wmi:
- fix build warning when CONFIG_PM not enabled
asus-wireless:
- Add ACPI HID ATK4001
- Add Asus Wireless Radio Control driver
asus-wmi:
- drop to_platform_driver macro
intel-hid:
- new hid event driver for hotkeys
sony-laptop:
- Keyboard backlight control for some Vaio Fit models
ideapad-laptop:
- Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list
apple-gmux:
- Assign apple_gmux_data before registering
toshiba_acpi:
- Add rfkill dependency to ACPI_TOSHIBA entry
- Fix keyboard backlight sysfs entries not being updated
- Add WWAN RFKill support
- Add support for WWAN devices
- Fix blank screen at boot if transflective backlight is supported
- Propagate the hotkey value via genetlink
toshiba_bluetooth:
- Add missing newline in toshiba_bluetooth_present function"
* tag 'platform-drivers-x86-v4.5-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (29 commits)
surface pro 4: fix compare_const_fl.cocci warnings
surface pro 4: Add support for Surface Pro 4 Buttons
platform:x86: Add Intel Telemetry Debugfs interfaces
platform:x86: Add Intel telemetry platform device
platform:x86: Add Intel telemetry platform driver
platform/x86: Add Intel Telemetry Core Driver
intel_punit_ipc: add NULL check for input parameters
thinkpad_acpi: Add support for keyboard backlight
dell-wmi: Process only one event on devices with interface version 0
dell-wmi: Check if Dell WMI descriptor structure is valid
tc1100-wmi: fix build warning when CONFIG_PM not enabled
asus-wireless: Add ACPI HID ATK4001
platform/x86: Add Asus Wireless Radio Control driver
asus-wmi: drop to_platform_driver macro
intel-hid: new hid event driver for hotkeys
Keyboard backlight control for some Vaio Fit models
platform/x86: Add rfkill dependency to ACPI_TOSHIBA entry
platform:x86: add Intel P-Unit mailbox IPC driver
intel_pmc_ipc: update acpi resource structure for Punit
ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list
...
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Intel PM Telemetry is a software mechanism via which various SoC
PM and performance related parameters like PM counters, firmware
trace verbosity, the status of different devices inside the SoC, etc.
can be monitored and analyzed. The different samples that may be
monitored can be configured at runtime via exported APIs.
This patch adds the telemetry core driver that implements basic
exported APIs.
Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This driver provides support for P-Unit mailbox IPC on Intel platforms.
The heart of the P-Unit is the Foxton microcontroller and its firmware,
which provide mailbox interface for power management usage.
Signed-off-by: Qipeng Zha <qipeng.zha@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Pull virtio barrier rework+fixes from Michael Tsirkin:
"This adds a new kind of barrier, and reworks virtio and xen to use it.
Plus some fixes here and there"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (44 commits)
checkpatch: add virt barriers
checkpatch: check for __smp outside barrier.h
checkpatch.pl: add missing memory barriers
virtio: make find_vqs() checkpatch.pl-friendly
virtio_balloon: fix race between migration and ballooning
virtio_balloon: fix race by fill and leak
s390: more efficient smp barriers
s390: use generic memory barriers
xen/events: use virt_xxx barriers
xen/io: use virt_xxx barriers
xenbus: use virt_xxx barriers
virtio_ring: use virt_store_mb
sh: move xchg_cmpxchg to a header by itself
sh: support 1 and 2 byte xchg
virtio_ring: update weak barriers to use virt_xxx
Revert "virtio_ring: Update weak barriers to use dma_wmb/rmb"
asm-generic: implement virt_xxx memory barriers
x86: define __smp_xxx
xtensa: define __smp_xxx
tile: define __smp_xxx
...
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As per: lkml.kernel.org/r/20150921112252.3c2937e1@mschwide
atomics imply a barrier on s390, so s390 should change
smp_mb__before_atomic and smp_mb__after_atomic to barrier() instead of
smp_mb() and hence should not use the generic versions.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Suggested-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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The s390 kernel is SMP to 99.99%, we just didn't bother with a
non-smp variant for the memory-barriers. If the generic header
is used we'd get the non-smp version for free. It will save a
small amount of text space for CONFIG_SMP=n.
Suggested-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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Looks like future sh variants will support a 4-byte cas which will be
used to implement 1 and 2 byte xchg.
This is exactly what we do for llsc now, move the portable part of the
code into a separate header so it's easy to reuse.
Suggested-by: Rich Felker <dalias@libc.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This completes the xchg implementation for sh architecture. Note: The
llsc variant is tricky since this only supports 4 byte atomics, the
existing implementation of 1 byte xchg is wrong: we need to do a 4 byte
cmpxchg and retry if any bytes changed meanwhile.
Write this in C for clarity.
Suggested-by: Rich Felker <dalias@libc.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for x86,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
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This defines __smp_xxx barriers for xtensa,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for tile,
for use by virtualization.
Some smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: for 32 bit, keep smp_mb__after_atomic around since it's faster
than the generic implementation.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for sparc,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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sh variant of smp_store_mb() calls xchg() on !SMP which is stronger than
implied by both the name and the documentation.
define __smp_store_mb instead: code in asm-generic/barrier.h
will then define smp_store_mb correctly depending on
CONFIG_SMP.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for s390,
for use by virtualization.
Some smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: smp_mb, smp_rmb and smp_wmb are defined as full barriers
unconditionally on this architecture.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for mips,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: the only exception is smp_mb__before_llsc which is mips-specific.
We define both the __smp_mb__before_llsc variant (for use in
asm/barriers.h) and smp_mb__before_llsc (for use elsewhere on this
architecture).
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for metag,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not
use the existing fence() macro since that is defined differently between
SMP and !SMP. For this reason, this patch introduces a wrapper
metag_fence() that doesn't depend on CONFIG_SMP.
fence() is then defined using that, depending on CONFIG_SMP.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for ia64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for blackfin,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for arm,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for arm64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: arm64 does not support !SMP config,
so smp_xxx and __smp_xxx are always equivalent.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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This defines __smp_xxx barriers for powerpc
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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As on most architectures, on x86 read_barrier_depends and
smp_read_barrier_depends are empty. Drop the local definitions and pull
the generic ones from asm-generic/barrier.h instead: they are identical.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
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On x86/um CONFIG_SMP is never defined. As a result, several macros
match the asm-generic variant exactly. Drop the local definitions and
pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On mips dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends,
smp_read_barrier_depends, smp_store_release and smp_load_acquire match
the asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On metag dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends,
smp_read_barrier_depends, smp_store_release and smp_load_acquire match
the asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On arm64 nop, read_barrier_depends, smp_read_barrier_depends
smp_store_mb(), smp_mb__before_atomic and smp_mb__after_atomic match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On arm smp_store_mb, read_barrier_depends, smp_read_barrier_depends,
smp_store_release, smp_load_acquire, smp_mb__before_atomic and
smp_mb__after_atomic match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On sparc 64 bit dma_rmb, dma_wmb, smp_store_mb, smp_mb, smp_rmb,
smp_wmb, read_barrier_depends and smp_read_barrier_depends match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
nop uses __asm__ __volatile but is otherwise identical to
the generic version, drop that as well.
This is in preparation to refactoring this code area.
Note: nop() was in processor.h and not in barrier.h as on other
architectures. Nothing seems to depend on it being there though.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On s390 read_barrier_depends, smp_read_barrier_depends
smp_store_mb(), smp_mb__before_atomic and smp_mb__after_atomic match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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On powerpc read_barrier_depends, smp_read_barrier_depends
smp_store_mb(), smp_mb__before_atomic and smp_mb__after_atomic match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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On ia64 smp_rmb, smp_wmb, read_barrier_depends, smp_read_barrier_depends
and smp_store_mb() match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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asm-generic/barrier.h defines a nop() macro.
To be able to use this header on ia64, we shouldn't
call local functions/variables nop().
There's one instance where this breaks on ia64:
rename the function to iosapic_nop to avoid the conflict.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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With commit b92b8b35a2e ("locking/arch: Rename set_mb() to smp_store_mb()")
it was made clear that the context of this call (and thus set_mb)
is strictly for CPU ordering, as opposed to IO. As such all archs
should use the smp variant of mb(), respecting the semantics and
saving a mandatory barrier on UP.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <linux-arch@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: dave@stgolabs.net
Link: http://lkml.kernel.org/r/1445975631-17047-3-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Pull arch/tile updates from Chris Metcalf:
"This is a grab bag of changes that includes some NOHZ and
context-tracking related changes, some debugging improvements,
JUMP_LABEL support, and some fixes for tilepro allmodconfig support.
We also remove the now-unused node_has_online_mem() definitions both
for tile's asm/topology.h as well as in linux/topology.h itself"
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
numa: remove stale node_has_online_mem() define
arch/tile: move user_exit() to early kernel entry sequence
tile: fix bug in setting PT_FLAGS_DISABLE_IRQ on kernel entry
tile: fix tilepro casts for readl, writel, etc
tile: fix a -Wframe-larger-than warning
tile: include the syscall number in the backtrace
MAINTAINERS: add git URL for tile
arch/tile: adopt prepare_exit_to_usermode() model from x86
tile/jump_label: add jump label support for TILE-Gx
tile: define a macro ktext_writable_addr to get writable kernel text address
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This isn't used anywhere, so delete it.
Looks like the last usage (in x86-specific code) was removed by Tejun
in 2011 in commit bd6709a91a59 ("x86, NUMA: Make 32bit use common NUMA
init path").
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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This ensures that we always notify context tracking that we
have exited from user space no matter how we enter the kernel.
It is similar to how arm64 handles context tracking, for example.
This allows the removal of all the exception_enter() calls that
were added in commit 49e4e15619cd ("tile: support CONTEXT_TRACKING and
thus NOHZ_FULL").
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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This flag value is saved in ptregs and used to decide whether
to disable irqs when returning from the kernel. Commit 1168df528fe4
("tile: don't assume user privilege is zero") performed a bad
merge from some KVM-enabled code that had not yet been upstreamed.
The only issue with the old code is that we will read the interrupt
mask in more conditions than we need to (e.g., coming from user
space when user space has the Interrupt Critical Section bit set, or
coming from a guest kernel), which is a slow multi-cycle operation.
This change saves those few cycles in the common case.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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Missing parentheses could cause an argument of the form
"integer + pointer" to get cast to "(long)integer + pointer"
and remain a pointer type, causing compiler warnings.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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The warning occurs in setup.c, where it is known that it can't be
a problem, but it's still a good idea to silence the warning.
The onstack array is converted from an s32 to a u8, which still
is plenty of range for the values being managed there.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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This information is easily available in the backtrace data and can
be helpful when trying to figure out the backtrace, particularly
if we're early in kernel entry or late in kernel exit.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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This change is a prerequisite change for TASK_ISOLATION but also
stands on its own for readability and maintainability. The existing
tile do_work_pending() was called in a loop from assembly on
the slow path; this change moves the loop into C code as well.
For the x86 version see commit c5c46f59e4e7 ("x86/entry: Add new,
comprehensible entry and exit handlers written in C").
This change exposes a pre-existing bug on the older tilepro platform;
the singlestep processing is done last, but on tilepro (unlike tilegx)
we enable interrupts while doing that processing, so we could in
theory miss a signal or other asynchronous event. A future change
could fix this by breaking the singlestep work into a "prepare"
step done in the main loop, and a "trigger" step done after exiting
the loop. Since this change is intended as purely a restructuring
change, we call out the bug explicitly now, but don't yet fix it.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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Add the arch-specific code to support jump label for TILE-Gx. This
code shares NOP instruction with ftrace, so we move it to a common
header file.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Zhigang Lu <zlu@ezchip.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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It is used by kgdb, ftrace, kprobe and jump label, so we factor
this out into a helper routine.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Zhigang Lu <zlu@ezchip.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 updates from Hans-Christian Noren Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
mmc: atmel: get rid of struct mci_dma_data
mmc: atmel-mci: restore dma on AVR32
avr32: wire up missing syscalls
avr32: wire up accept4 syscall
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As struct mci_dma_data is now only used by AVR32, it is nothing but
pointless indirection. Replace it with struct dw_dma_slave in the
AVR32 platform code and with a void pointer elsewhere.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
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Commit ecb89f2f5f3e7 ("mmc: atmel-mci: remove compat for non DT board
when requesting dma chan") broke dma on AVR32 and any other boards not
using DT. This restores a fallback mechanism for such cases.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
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This patch adds three missing syscalls to AVR32:
__NR_userfaultfd
__NR_membarrier
__NR_mlock2
Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
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The accept4 syscall is missing on AVR32. Fix this.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
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Pull more networking fixes from David Miller:
1) Fix brcmfmac build with older gcc, from Arend van Spriel.
2) IRQ values unintentionally truncated to u8 in mlx5 driver, from
Doron Tsur.
3) Fix build warnings wrt tcp cgroup changes, from Geert Uytterhoeven.
4) Limit deep recursion in ovs stack, from Hannes Frederic Sowa.
5) at803x phy driver bug fixes from, Martin Blumenstingl.
6) Fix TSO handling in hns driver, from Daode Huang
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
ovs: limit ovs recursions in ovs_execute_actions to not corrupt stack
team: Replace rcu_read_lock with a mutex in team_vlan_rx_kill_vid
net: hns: bug fix about hisilicon TSO BD mode
brcmfmac: fix BRCMF_FW_NVRAM_DEF macro for older gcc compilers
net: phy: at803x: Add the interrupt register bit definitions
net: phy: at803x: Clean up duplicate register definitions
net: phy: at803x: Allow specifying the RGMII RX clock delay via phy mode
net: phy: at803x: Don't set gbit features for the AR8030 phy
arm64: bpf: add extra pass to handle faulty codegen
arm64: insn: remove BUG_ON from codegen
sctp: the temp asoc's transports should not be hashed/unhashed
net/mlx5_core: Fix trimming down IRQ number
tcp_memcontrol: Forward declare cgroup_subsys and mem_cgroup stucts
batman-adv: Drop immediate orig_node free function
batman-adv: Drop immediate batadv_hard_iface free function
batman-adv: Drop immediate neigh_ifinfo free function
batman-adv: Drop immediate batadv_hardif_neigh_node free function
batman-adv: Drop immediate batadv_neigh_node free function
batman-adv: Drop immediate batadv_orig_ifinfo free function
batman-adv: Avoid recursive call_rcu for batadv_nc_node
...
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