Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:31:02 +0000 (11:31 -0800)]
x86: unify pmd_offset
Impact: cleanup
Unify and demacro pmd_offset.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:31:01 +0000 (11:31 -0800)]
x86: unify pmd_index
Impact: cleanup
Unify and demacro pmd_index.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:31:00 +0000 (11:31 -0800)]
x86: unify pmd_page
Impact: cleanup
Unify and demacro pmd_page.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:59 +0000 (11:30 -0800)]
x86: unify pmd_page_vaddr
Impact: cleanup
Unify and demacro pmd_page_vaddr.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:58 +0000 (11:30 -0800)]
x86: unify pud_offset
Impact: cleanup
Unify and demacro pud_offset.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:57 +0000 (11:30 -0800)]
x86: unify pud_index
Impact: cleanup
Unify and demacro pud_index.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:56 +0000 (11:30 -0800)]
x86: unify pgd_page
Impact: cleanup
Unify and demacro pgd_page.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:55 +0000 (11:30 -0800)]
x86: unify pud_page
Impact: cleanup
Unify and demacro pud_page.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:54 +0000 (11:30 -0800)]
x86: include pgtable_SIZE.h earlier
We'll need the definitions sooner.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:53 +0000 (11:30 -0800)]
x86: unify pud_page_vaddr
Impact: cleanup
Unify and demacro pud_page_vaddr.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:52 +0000 (11:30 -0800)]
x86: unify pgd_page_vaddr
Impact: cleanup
Unify and demacro pgd_page_vaddr.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:51 +0000 (11:30 -0800)]
x86: unify pmd_none
Impact: cleanup
Unify and demacro pmd_none.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:50 +0000 (11:30 -0800)]
x86: unify pmd_present
Impact: cleanup
Unify and demacro pmd_present.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:49 +0000 (11:30 -0800)]
x86: unify pgd_present
Impact: cleanup
Unify and demacro pgd_present.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:48 +0000 (11:30 -0800)]
x86: unify pud_present
Impact: cleanup
Unify and demacro pud_present.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:45 +0000 (11:30 -0800)]
x86: unify pte_present
Impact: cleanup
Unify and demacro pte_present.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:44 +0000 (11:30 -0800)]
x86: unify pte_same
Impact: cleanup
Unify and demacro pte_same.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 5 Feb 2009 19:30:43 +0000 (11:30 -0800)]
x86: unify pte_none
Impact: cleanup
Unify and demacro pte_none.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Linus Torvalds [Sat, 31 Jan 2009 23:56:23 +0000 (15:56 -0800)]
Merge branch 'header-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (90 commits)
headers_check fix: x86, swab.h
headers_check fix: x86, sigcontext32.h
headers_check fix: x86, sigcontext.h
headers_check fix: x86, ptrace-abi.h
headers_check fix: x86, mtrr.h
headers_check fix: x86, mce.h
headers_check fix: x86, kvm.h
headers_check fix: x86, e820.h
headers_check fix: linux/rtnetlink.h
headers_check fix: linux/nubus.h
headers_check fix: video/uvesafb.h
headers_check fix: video/sisfb.h
headers_check fix: sound/hdsp.h
headers_check fix: mtd/inftl-user.h
headers_check fix: linux/virtio_net.h
headers_check fix: linux/virtio_console.h
headers_check fix: linux/virtio_blk.h
headers_check fix: linux/videodev.h
headers_check fix: linux/video_encoder.h
headers_check fix: linux/video_decoder.h
...
Linus Torvalds [Sat, 31 Jan 2009 23:55:05 +0000 (15:55 -0800)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
generic-ipi: use per cpu data for single cpu ipi calls
cpumask: convert lib/smp_processor_id to new cpumask ops
signals, debug: fix BUG: using smp_processor_id() in preemptible code in print_fatal_signal()
Linus Torvalds [Sat, 31 Jan 2009 23:54:30 +0000 (15:54 -0800)]
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
irq: export __set_irq_handler() and handle_level_irq()
Linus Torvalds [Sat, 31 Jan 2009 23:54:06 +0000 (15:54 -0800)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
hrtimer: prevent negative expiry value after clock_was_set()
hrtimers: allow the hot-unplugging of all cpus
hrtimers: increase clock min delta threshold while interrupt hanging
Linus Torvalds [Sat, 31 Jan 2009 23:53:30 +0000 (15:53 -0800)]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, ds, bts: cleanup/fix DS configuration
ring-buffer: reset timestamps when ring buffer is reset
trace: set max latency variable to zero on default
trace: stop all recording to ring buffer on ftrace_dump
trace: print ftrace_dump at KERN_EMERG log level
ring_buffer: reset write when reserve buffer fail
tracing/function-graph-tracer: fix a regression while suspend to disk
ring-buffer: fix alignment problem
Linus Torvalds [Sat, 31 Jan 2009 23:52:46 +0000 (15:52 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 setup: fix asm constraints in vesa_store_edid
xen: make sysfs files behave as their names suggest
x86: tone down mtrr_trim_uncached_memory() warning
x86: correct the CPUID pattern for MSR_IA32_MISC_ENABLE availability
Linus Torvalds [Sat, 31 Jan 2009 23:52:25 +0000 (15:52 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
leds: Fix bounds checking of wm8350->pmic.led
regulator: move bq24022 init back to module_init instead of subsys_initcall
Linus Torvalds [Sat, 31 Jan 2009 23:52:02 +0000 (15:52 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (27 commits)
MIPS: Alchemy: time.c build fix
MIPS: RB532: Export rb532_gpio_set_func()
MIPS: RB532: Update headers
MIPS: RB532: Simplify dev3 init
MIPS: RB532: Remove {get,set}_434_reg()
MIPS: RB532: Move dev3 init code to devices.c
MIPS: RB532: Fix set_latch_u5()
MIPS: RB532: Fix init of rb532_dev3_ctl_res
MIPS: RB532: Use driver_data instead of platform_data
MIPS: RB532: Detect uart type, add platform device
MIPS: RB532: remove useless CF GPIO initialisation
MIPS: RB532: Auto disable GPIO alternate function
MIPS: RB532: Add set_type() function to IRQ struct.
MIPS: RC32434: Define io_map_base for PCI controller
MIPS: RB532: Fix bit swapping in rb532_set_bit()
MIPS: Use hardware watchpoints on all R1 and R2 CPUs.
MIPS: Read watch registers with interrupts disabled.
MIPS: Fix a typo in watchpoint register structure.
MIPS: TXx9: Add support for TX4939 internal RTC
MIPS: R2: Fix broken installation of cache error handler.
...
Mikulas Patocka [Fri, 30 Jan 2009 20:27:14 +0000 (15:27 -0500)]
Fix memory corruption in console selection
Fix an off-by-two memory error in console selection.
The loop below goes from sel_start to sel_end (inclusive), so it writes
one more character. This one more character was added to the allocated
size (+1), but it was not multiplied by an UTF-8 multiplier.
This patch fixes a memory corruption when UTF-8 console is used and the
user selects a few characters, all of them 3-byte in UTF-8 (for example
a frame line).
When memory redzones are enabled, a redzone corruption is reported.
When they are not enabled, trashing of random memory occurs.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 31 Jan 2009 23:50:43 +0000 (15:50 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
igb: fix link reporting when using sgmii
igb: prevent skb_over panic w/ mtu smaller than 1K
igb: Fix DCA errors and do not use context index for 82576
ipv6: compile fix for ip6mr.c
packet: Avoid lock_sock in mmap handler
sfc: Replace stats_enabled flag with a disable count
sfc: SFX7101/SFT9001: Fix AN advertisements
sfc: SFT9001: Always enable XNP exchange on SFT9001 rev B
sfc: Update board info for hardware monitor on SFN4111T-R5 and later
sfc: Test for PHYXS faults whenever we cannot test link state bits
sfc: Reinitialise the PHY completely in case of a PHY or NIC reset
sfc: Fix post-reset MAC selection
sfc: SFN4111T: Fix GPIO sharing between I2C and FLASH_CFG_1
sfc: SFT9001: Fix speed reporting in 1G PHY loopback
sfc: SFX7101: Remove workaround for bad link training
sfc: SFT9001: Enable robust link training
sky2: fix hard hang with netconsoling and iface going up
Linus Torvalds [Sat, 31 Jan 2009 23:08:56 +0000 (15:08 -0800)]
Stop playing silly games with the VM_ACCOUNT flag
The mmap_region() code would temporarily set the VM_ACCOUNT flag for
anonymous shared mappings just to inform shmem_zero_setup() that it
should enable accounting for the resulting shm object. It would then
clear the flag after calling ->mmap (for the /dev/zero case) or doing
shmem_zero_setup() (for the MAP_ANON case).
This just resulted in vma merge issues, but also made for just
unnecessary confusion. Use the already-existing VM_NORESERVE flag for
this instead, and let shmem_{zero|file}_setup() just figure it out from
that.
This also happens to make it obvious that the new DRI2 GEM layer uses a
non-reserving backing store for its object allocation - which is quite
possibly not intentional. But since I didn't want to change semantics
in this patch, I left it alone, and just updated the caller to use the
new flag semantics.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexander Duyck [Sat, 31 Jan 2009 08:53:18 +0000 (00:53 -0800)]
igb: fix link reporting when using sgmii
When using sgmii the link was not being properly passed up to the driver
from the underlying link management functions. This change corrects it so
that get_link_status is cleared when a link has been found.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Sat, 31 Jan 2009 08:52:57 +0000 (00:52 -0800)]
igb: prevent skb_over panic w/ mtu smaller than 1K
A panic has been observed with frame sizes smaller than 1K. This has been
root caused to the hardware spanning larger frames across multiple buffers
and then reporting the original frame size in the first descriptor. To
prevent this we can enable set the LPE bit which in turn will restrict
packet sizes to those set in the RLPML register.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Sat, 31 Jan 2009 08:52:30 +0000 (00:52 -0800)]
igb: Fix DCA errors and do not use context index for 82576
82576 was being incorrectly flagged as needing a context index. It does not as
each ring has it's own table of 2 contexts.
Driver was registering after registering the driver instead of the other way around.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Jones [Sat, 31 Jan 2009 08:51:49 +0000 (00:51 -0800)]
ipv6: compile fix for ip6mr.c
net/ipv6/ip6mr.c: In function 'pim6_rcv':
net/ipv6/ip6mr.c:368: error: implicit declaration of function 'csum_ipv6_magic'
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andreas Schwab [Tue, 27 Jan 2009 20:45:57 +0000 (21:45 +0100)]
x86 setup: fix asm constraints in vesa_store_edid
Impact: fix potential miscompile (currently believed non-manifest)
As the comment explains, the VBE DDC call can clobber any register.
Tell the compiler about that fact.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Herbert Xu [Fri, 30 Jan 2009 22:12:06 +0000 (14:12 -0800)]
packet: Avoid lock_sock in mmap handler
As the mmap handler gets called under mmap_sem, and we may grab
mmap_sem elsewhere under the socket lock to access user data, we
should avoid grabbing the socket lock in the mmap handler.
Since the only thing we care about in the mmap handler is for
pg_vec* to be invariant, i.e., to exclude packet_set_ring, we
can achieve this by simply using a new mutex.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Martin MOKREJŠ <mmokrejs@ribosome.natur.cuni.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 29 Jan 2009 18:00:07 +0000 (18:00 +0000)]
sfc: Replace stats_enabled flag with a disable count
Currently we use a spin-lock to serialise statistics fetches and also
to inhibit them for short periods of time, plus a flag to
enable/disable statistics fetches for longer periods of time, during
online reset. This was apparently insufficient to deal with the several
reasons for stats being disabled.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 29 Jan 2009 17:59:37 +0000 (17:59 +0000)]
sfc: SFX7101/SFT9001: Fix AN advertisements
All 10Xpress PHYs require autonegotiation all the time; enforce this
in the set_settings() method and do not treat it as a workaround.
Remove claimed support for 100M HD mode since it is not supported by
current firmware.
Do not set speed override bits when AN is enabled, and do not use
register 1.49192 for AN configuration as it can override what we set
elsewhere.
Always set the AN selector bits to 1 (802.3).
Fix confusion between Next Page and Extended Next Page.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 29 Jan 2009 17:52:11 +0000 (17:52 +0000)]
sfc: SFT9001: Always enable XNP exchange on SFT9001 rev B
This workaround is not specific to rev A.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 29 Jan 2009 17:51:48 +0000 (17:51 +0000)]
sfc: Update board info for hardware monitor on SFN4111T-R5 and later
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:51:15 +0000 (17:51 +0000)]
sfc: Test for PHYXS faults whenever we cannot test link state bits
Depending on the loopback mode, there may be no pertinent link state
bits. In this case we test the PHYXS RX fault bit instead. Make
sure to do this in all cases where there are no link state bits.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:50:51 +0000 (17:50 +0000)]
sfc: Reinitialise the PHY completely in case of a PHY or NIC reset
In particular, set pause advertising bits properly.
A PHY reset is not necessary to recover from the register self-test,
so use a "invisible" reset there instead.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:49:59 +0000 (17:49 +0000)]
sfc: Fix post-reset MAC selection
Modify falcon_switch_mac() to always set NIC_STAT_REG, even if the the
MAC is the same as it was before. This ensures that the value is
correct after an online reset.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 29 Jan 2009 17:49:29 +0000 (17:49 +0000)]
sfc: SFN4111T: Fix GPIO sharing between I2C and FLASH_CFG_1
Change sfn4111t_reset() to change only GPIO output enables so that it
doesn't break subsequent I2C operations.
Update comments to explain exactly what we're doing.
Add a short sleep to make sure the FLASH_CFG_1 value is latched before
any subsequent I2C operations.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:49:09 +0000 (17:49 +0000)]
sfc: SFT9001: Fix speed reporting in 1G PHY loopback
Instead of disabling AN in loopback, just prevent restarting AN and
override the speed in sft9001_get_settings().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:48:43 +0000 (17:48 +0000)]
sfc: SFX7101: Remove workaround for bad link training
Early versions of the SFX7101 firmware could complete link training in
a state where it would not adequately cancel noise (Solarflare bug
10750). We previously worked around this by resetting the PHY after
seeing many Ethernet CRC errors. This workaround is unsafe since it
takes no account of the interval between errors; it also appears to
be unnecessary with production firmware. Therefore remove it.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Hodgson [Thu, 29 Jan 2009 17:48:10 +0000 (17:48 +0000)]
sfc: SFT9001: Enable robust link training
Enable a firmware option that appears to be necessary for reliable
operation.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexey Dobriyan [Fri, 30 Jan 2009 21:45:31 +0000 (13:45 -0800)]
sky2: fix hard hang with netconsoling and iface going up
Printing anything over netconsole before hw is up and running is,
of course, not going to work.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roel Kluin [Sat, 17 Jan 2009 15:06:40 +0000 (16:06 +0100)]
leds: Fix bounds checking of wm8350->pmic.led
Fix bounds checking of wm8350->pmic.led
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Philipp Zabel [Sun, 18 Jan 2009 13:32:27 +0000 (14:32 +0100)]
regulator: move bq24022 init back to module_init instead of subsys_initcall
This workaround was needed when regulator/ was not linked before both
power/ and usb/otg/ in drivers/Makefile. Now that it is even linked
before mfd/, this patch makes sure that bq24022 isn't probed before the
GPIO expander is set up.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Thomas Gleixner [Sun, 25 Jan 2009 10:31:36 +0000 (11:31 +0100)]
hrtimer: prevent negative expiry value after clock_was_set()
Impact: prevent false positive WARN_ON() in clockevents_program_event()
clock_was_set() changes the base->offset of CLOCK_REALTIME and
enforces the reprogramming of the clockevent device to expire timers
which are based on CLOCK_REALTIME. If the clock change is large enough
then the subtraction of the timer expiry value and base->offset can
become negative which triggers the warning in
clockevents_program_event().
Check the subtraction result and set a negative value to 0.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Sebastien Dugue [Mon, 1 Dec 2008 13:09:07 +0000 (14:09 +0100)]
hrtimers: allow the hot-unplugging of all cpus
Impact: fix CPU hotplug hang on Power6 testbox
On architectures that support offlining all cpus (at least powerpc/pseries),
hot-unpluging the tick_do_timer_cpu can result in a system hang.
This comes from the fact that if the cpu going down happens to be the
cpu doing the tick, then as the tick_do_timer_cpu handover happens after the
cpu is dead (via the CPU_DEAD notification), we're left without ticks,
jiffies are frozen and any task relying on timers (msleep, ...) is stuck.
That's particularly the case for the cpu looping in __cpu_die() waiting
for the dying cpu to be dead.
This patch addresses this by having the tick_do_timer_cpu handover happen
earlier during the CPU_DYING notification. For this, a new clockevent
notification type is introduced (CLOCK_EVT_NOTIFY_CPU_DYING) which is triggered
in hrtimer_cpu_notify().
Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Frederic Weisbecker [Mon, 22 Dec 2008 01:24:48 +0000 (02:24 +0100)]
hrtimers: increase clock min delta threshold while interrupt hanging
Impact: avoid timer IRQ hanging slow systems
While using the function graph tracer on a virtualized system, the
hrtimer_interrupt can hang the system on an infinite loop.
This can be caused in several situations:
- the hardware is very slow and HZ is set too high
- something intrusive is slowing the system down (tracing under emulation)
... and the next clock events to program are always before the current time.
This patch implements a reasonable compromise: if such a situation is
detected, we share the CPUs time in 1/4 to process the hrtimer interrupts.
This is enough to let the system running without serious starvation.
It has been successfully tested under VirtualBox with 1000 HZ and 100 HZ
with function graph tracer launched. On both cases, the clock events were
increased until about 25 ms periodic ticks, which means 40 HZ.
So we change a hard to debug hang into a warning message and a system that
still manages to limp along.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Manuel Lauss [Tue, 6 Jan 2009 09:34:52 +0000 (10:34 +0100)]
MIPS: Alchemy: time.c build fix
In Linus' current -git the cpumask member is now a pointer.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Thu, 22 Jan 2009 18:32:43 +0000 (19:32 +0100)]
MIPS: RB532: Export rb532_gpio_set_func()
This kernel symbol provides a way for drivers to switch on alternate
function for a certain GPIO pin. Turning it off is done implicitly when
changing the GPIO direction, as that would be fixed when using the given
pin als alternate function.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Thu, 22 Jan 2009 18:28:50 +0000 (19:28 +0100)]
MIPS: RB532: Update headers
Remove the {set,get}_434_reg() prototypes, as the functions have been
removed. Also move the prototypes for {get,set}_latch_u5() to the correct
place.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Mon, 19 Jan 2009 22:42:54 +0000 (23:42 +0100)]
MIPS: RB532: Simplify dev3 init
As rb532_dev3_ctl_res is not used by any platform device, it can be dropped
when not used for holding the physical address of the device 3 controller.
Also a size of one byte should suffice when ioremapping the physical
address mentioned above, as only a single byte is being read from and
written to it.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Mon, 19 Jan 2009 22:42:53 +0000 (23:42 +0100)]
MIPS: RB532: Remove {get,set}_434_reg()
These kernel symbols are unused. Also, since dev3 init has been moved to
devices.c, set_434_reg() breaks compiling as it uses dev3.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Mon, 19 Jan 2009 22:42:52 +0000 (23:42 +0100)]
MIPS: RB532: Move dev3 init code to devices.c
This code doesn't belong to gpio.c, as it's completely unrelated to
GPIO. As dev1 and dev2 init code is in devices.c, it seems to be a more
adequate place.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Mon, 19 Jan 2009 22:42:51 +0000 (23:42 +0100)]
MIPS: RB532: Fix set_latch_u5()
The data to be written is just a byte, so use writeb instead of writel.
Also, dev3.base contains the address, not the data so referencing here
is wrong.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Mon, 19 Jan 2009 22:42:50 +0000 (23:42 +0100)]
MIPS: RB532: Fix init of rb532_dev3_ctl_res
This register just contains the address of the actual resource, so
initialisation has to be the same as cf_slot0_res and nand_slot0_res.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Thu, 15 Jan 2009 14:41:44 +0000 (15:41 +0100)]
MIPS: RB532: Use driver_data instead of platform_data
As the korina ethernet driver uses platform_get_drvdata() to extract the
driver specific data from the platform device, driver_data has to be
used here.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Thu, 15 Jan 2009 14:38:38 +0000 (15:38 +0100)]
MIPS: RB532: Detect uart type, add platform device
Auto-detection works just fine, so use it instead of specifying the type
manually. Also define a platform device for the uart, as suggested by
David Daney.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Fri, 28 Nov 2008 19:46:22 +0000 (20:46 +0100)]
MIPS: RB532: remove useless CF GPIO initialisation
As the pata-rb532-cf driver calls gpio_direction_input(), the calls to
rb532_gpio_set_func() and rb532_gpio_direction_input() are not needed since
the alternate function is automatically being disabled when changing the
GPIO pin direction.
The later two calls to rb532_gpio_set_{ilevel,istat}() are implicitly being
done by the IRQ initialisation of pata-rb532-cf.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Fri, 28 Nov 2008 19:46:09 +0000 (20:46 +0100)]
MIPS: RB532: Auto disable GPIO alternate function
When a driver calls gpio_set_direction_{input,output}(), it obviously
doesn't want the alternate function for that pin to be active (as the
direction would not matter in that case). This patch ensures alternate
function is disabled when the direction is being changed.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Fri, 28 Nov 2008 19:45:10 +0000 (20:45 +0100)]
MIPS: RB532: Add set_type() function to IRQ struct.
Interrupt Group 4 mapps the GPIO pins enabled as interrupt sources;
add defines to make this clear when addressing them later in code.
The mapped GPIOs support triggering on either level high or low. To
achieve this, the set_type() function calls rb532_gpio_set_ilevel() for
interrupts of the above mentioned group.
As there is no way to alter the triggering characteristics of the other
interrupts, accept level triggering on status high only. (This is just a
guess; but as the system boots fine and interrupt-driven devices (e.g.
serial console) work with no implications, it seems to be right.)
To clear a GPIO mapped IRQ, the source has to be cleared (i.e., the
interrupt status bit of the corresponding GPIO pin). This is done inside
rb532_disable_irq().
After applying these changes I could undo most of my former "fixes" to
pata-rb532-cf. Particularly all interrupt handling can be done
generically via set_irq_type() as it was before.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Tue, 11 Nov 2008 23:16:04 +0000 (00:16 +0100)]
MIPS: RC32434: Define io_map_base for PCI controller
The code is rather based on trial-and-error than knowledge. Verified Via
Rhine functionality in PIO as well as MMIO mode.
[Looks sane -- Ralf]
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Phil Sutter [Tue, 11 Nov 2008 23:09:30 +0000 (00:09 +0100)]
MIPS: RB532: Fix bit swapping in rb532_set_bit()
The algorithm works unconditionally. If bitval is one, the first line is
a no op and the second line sets the bit at offset position. Vice versa,
if bitval is zero, the first line clears the bit at offset position and
the second line is a no op.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 5 Jan 2009 23:29:14 +0000 (15:29 -0800)]
MIPS: Use hardware watchpoints on all R1 and R2 CPUs.
The previous definition inadvertently omits Octeon which currently is
treated as an architecture variant separate from MIPS32 and MIPS64.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 5 Jan 2009 23:29:58 +0000 (15:29 -0800)]
MIPS: Read watch registers with interrupts disabled.
If a context switch occurred between the watch exception and reading the
watch registers, it would be possible for the new process to corrupt their
state. Enabling interrupts only after the watch registers are read avoids
this race.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Wed, 24 Dec 2008 23:44:26 +0000 (15:44 -0800)]
MIPS: Fix a typo in watchpoint register structure.
This fixes the ptrace ABI for watch registers, and should allow 64bit
kernels to use the watch register support.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Atsushi Nemoto [Tue, 20 Jan 2009 14:07:41 +0000 (23:07 +0900)]
MIPS: TXx9: Add support for TX4939 internal RTC
Add platform support to use rtc-tx4939 driver.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 28 Jan 2009 18:48:23 +0000 (18:48 +0000)]
MIPS: R2: Fix broken installation of cache error handler.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 28 Jan 2009 17:48:40 +0000 (17:48 +0000)]
MIPS: IP27: Switch from DMA_IP27 to DMA_COHERENT
The special IP27 DMA code selected by DMA_IP27 has been removed a while
ago turning DMA_IP27 into almost a nop. Also fixup the broken logic of
its last users memcpy.S and memcpy-inatomic.s.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 28 Jan 2009 14:13:37 +0000 (14:13 +0000)]
MIPS: Add return value checks to user_termio_to_kernel_termios()
And while at it, convert all functions from macros to inline functions
for sanity.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Huang Weiyi [Wed, 14 Jan 2009 22:56:46 +0000 (06:56 +0800)]
MIPS: Octeon: Remove duplicated #includes
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Mon, 12 Jan 2009 00:52:18 +0000 (00:52 +0000)]
MIPS: atomic_*(): Change type of intermediate variables.
This shaves of 1912 bytes of an IP27 defconfig kernel and avoids
unexpected overflow behaviour in atomic_sub_if_positive. Apply the same
changes to the atomic64_* functions for consistency.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Mon, 12 Jan 2009 00:09:13 +0000 (00:09 +0000)]
MIPS: Port "mm: invoke oom-killer from page fault" from UML / x86
Original commit
1c0fe6e3bda0464728c23c8d84aa47567e8b716c.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Sun, 11 Jan 2009 18:44:49 +0000 (18:44 +0000)]
MIPS: Avoid destructive invalidation on partial cachelines.
See discussion e9c3a7c20901051031y528d0d31r18d44c5096c59e0@mail.gmail.com.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Sun, 11 Jan 2009 18:27:10 +0000 (18:27 +0000)]
MIPS: SMTC: Fix build after recent creditial changes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Fri, 30 Jan 2009 19:37:22 +0000 (11:37 -0800)]
Allow opportunistic merging of VM_CAN_NONLINEAR areas
Commit
de33c8db5910cda599899dd431cc30d7c1018cbf ("Fix OOPS in
mmap_region() when merging adjacent VM_LOCKED file segments") unified
the vma merging of anonymous and file maps to just one place, which
simplified the code and fixed a use-after-free bug that could cause an
oops.
But by doing the merge opportunistically before even having called
->mmap() on the file method, it now compares two different 'vm_flags'
values: the pre-mmap() value of the new not-yet-formed vma, and previous
mappings of the same file around it.
And in doing so, it refused to merge the common file case, which adds a
marker to say "I can be made non-linear".
This fixes it by just adding a set of flags that don't have to match,
because we know they are ok to merge. Currently it's only that single
VM_CAN_NONLINEAR flag, but at least conceptually there could be others
in the future.
Reported-and-acked-by: Hugh Dickins <hugh@veritas.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:27:38 +0000 (22:57 +0530)]
headers_check fix: x86, swab.h
fix the following 'make headers_check' warnings:
usr/include/asm/swab.h:4: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/asm/swab.h:7: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:25:20 +0000 (22:55 +0530)]
headers_check fix: x86, sigcontext32.h
fix the following 'make headers_check' warning:
usr/include/asm/sigcontext32.h:20: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:23:49 +0000 (22:53 +0530)]
headers_check fix: x86, sigcontext.h
fix the following 'make headers_check' warnings:
usr/include/asm/sigcontext.h:5: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/asm/sigcontext.h:24: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:22:16 +0000 (22:52 +0530)]
headers_check fix: x86, ptrace-abi.h
fix the following 'make headers_check' warnings:
usr/include/asm/ptrace-abi.h:86: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/asm/ptrace-abi.h:93: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:18:17 +0000 (22:48 +0530)]
headers_check fix: x86, mtrr.h
fix the following 'make headers_check' warning:
usr/include/asm/mtrr.h:61: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:17:27 +0000 (22:47 +0530)]
headers_check fix: x86, mce.h
fix the following 'make headers_check' warnings:
usr/include/asm/mce.h:7: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/asm/mce.h:29: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:16:08 +0000 (22:46 +0530)]
headers_check fix: x86, kvm.h
fix the following 'make headers_check' warnings:
usr/include/asm/kvm.h:9: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/asm/kvm.h:16: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:14:58 +0000 (22:44 +0530)]
headers_check fix: x86, e820.h
fix the following 'make headers_check' warning:
usr/include/asm/e820.h:44: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:10:32 +0000 (22:40 +0530)]
headers_check fix: linux/rtnetlink.h
fix the following 'make headers_check' warning:
usr/include/linux/rtnetlink.h:328: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:09:17 +0000 (22:39 +0530)]
headers_check fix: linux/nubus.h
fix the following 'make headers_check' warning:
usr/include/linux/nubus.h:232: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:05:17 +0000 (22:35 +0530)]
headers_check fix: video/uvesafb.h
fix the following 'make headers_check' warning:
usr/include/video/uvesafb.h:5: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:04:29 +0000 (22:34 +0530)]
headers_check fix: video/sisfb.h
fix the following 'make headers_check' warnings:
usr/include/video/sisfb.h:25: include of <linux/types.h> is preferred over <asm/types.h>
usr/include/video/sisfb.h:78: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:03:29 +0000 (22:33 +0530)]
headers_check fix: sound/hdsp.h
fix the following 'make headers_check' warning:
usr/include/sound/hdsp.h:33: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:02:35 +0000 (22:32 +0530)]
headers_check fix: mtd/inftl-user.h
fix the following 'make headers_check' warning:
usr/include/mtd/inftl-user.h:61: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 17:01:05 +0000 (22:31 +0530)]
headers_check fix: linux/virtio_net.h
fix the following 'make headers_check' warning:
usr/include/linux/virtio_net.h:28: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 16:59:33 +0000 (22:29 +0530)]
headers_check fix: linux/virtio_console.h
fix the following 'make headers_check' warning:
usr/include/linux/virtio_console.h:15: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 16:57:58 +0000 (22:27 +0530)]
headers_check fix: linux/virtio_blk.h
fix the following 'make headers_check' warning:
usr/include/linux/virtio_blk.h:21: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 16:56:01 +0000 (22:26 +0530)]
headers_check fix: linux/videodev.h
fix the following 'make headers_check' warning:
usr/include/linux/videodev.h:53: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 16:54:09 +0000 (22:24 +0530)]
headers_check fix: linux/video_encoder.h
fix the following 'make headers_check' warning:
usr/include/linux/video_encoder.h:5: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Jaswinder Singh Rajput [Fri, 30 Jan 2009 16:52:51 +0000 (22:22 +0530)]
headers_check fix: linux/video_decoder.h
fix the following 'make headers_check' warning:
usr/include/linux/video_decoder.h:7: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>