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recover LLD EQs for DB drop interrupts. This includes adding a new
db_lock, a spin lock disabling BH too, used by the recovery thread and
the ring_tx_db() paths to allow db drop recovery.
Clean up initial DB avoidance code.
Add read_eq_indices() - this allows the LLD to use the PCIe mw to
efficiently read hw eq contexts.
Add cxgb4_sync_txq_pidx() - called by iw_cxgb4 to sync up the sw/hw
pidx value.
Add flush_eq_cache() and cxgb4_flush_eq_cache(). This allows iw_cxgb4
to flush the sge eq context cache before beginning db drop recovery.
Add module parameter, dbfoifo_int_thresh, to allow tuning the db
interrupt threshold value.
Add dbfifo_int_thresh to cxgb4_lld_info so iw_cxgb4 knows the threshold.
Add module parameter, dbfoifo_drain_delay, to allow tuning the amount
of time delay between DB FULL and EMPTY upcalls to iw_cxgb4.
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Add platform-specific callback functions for interrupts. This is
needed to do a single read-clear of the CAUSE register and then call
out to platform specific functions for DB threshold interrupts and DB
drop interrupts.
Add t4_mem_win_read_len() - mem-window reads for arbitrary lengths.
This is used to read the CIDX/PIDX values from EC contexts during DB
drop recovery.
Add t4_fwaddrspace_write() - sends addrspace write cmds to the fw.
Needed to flush the sge eq context cache.
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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These new ioctls make it possible for the dv_timings API to replace
the dv_preset API eventually.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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764e16a changed perf-record to create events disabled by default and
enable them once perf initializations are done. This setting was dropped
by 0f82ebc. Now perf events are once again generated during perf's
initialization phase (e.g., generating maps).
As an example, perf opens a lot of files at startup. Unpatched:
perf record -e syscalls:sys_enter_open -ga -fo /tmp/perf.data -- sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.087 MB /tmp/perf.data (~3798 samples) ]
Using perf-script to look at the samples shows the perf command generating
563 of the 566 total events.
Patched:
perf record -e syscalls:sys_enter_open -ga -fo /tmp/perf.data -- sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.028 MB /tmp/perf.data (~1206 samples) ]
Using perf-script to look at the samples does not show perf command.
Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1336968088-11531-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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When the device is physically unplugged but there are still
open file handles, resource release is defered until last
opened handle is closed.
This patch fixes a missing em28xx_fh struct release.
Tested by compilation only.
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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* pm-sleep:
PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format
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* pm-domains:
PM / Domains: Make it possible to add devices to inactive domains
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The generic PM domains core code currently requires domains to be in
the "power on" state for adding devices to them, but this limitation
turns out to be inconvenient in some situations, so remove it.
For this purpose, make __pm_genpd_add_device() set the device's
need_restore flag if the domain is in the "power off" state, so that
the device's "restore state" (usually .runtime_resume()) callback
is executed when it is resumed after the domain has been turned on.
If the domain is in the "power on" state, the device's need_restore
flag will be cleared by __pm_genpd_add_device(), so that its "save
state" (usually .runtime_suspend()) callback is executed when the
domain is about to be turned off. However, since that default
behavior need not be always desirable, add a helper function
pm_genpd_dev_need_restore() allowing a device's need_restore flag
to be set/unset at any time.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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integer format
Sometimes resume= parameter comes in integer style (e.g. major:minor)
and then name_to_dev_t can not detect partition properly. (especially
async device like usb, mmc).
This patch calls get_gendisk() if resumewait is true and resume_file
is in integer format to work around this problem.
Signed-off-by: Minho Ban <mhban@samsung.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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The PRE_BUILD and POST_BUILD options of ktest are added to allow the
user to add temporary patch to the system and remove it on builds. This
is sometimes use to take a change from another git branch and add it to
a series without the fix so that this series can be tested, when an
unrelated bug exists in the series.
The problem comes when a tagged commit is being used. For example, if
v3.2 is being tested, and we add a patch to it, the kernelrelease for
that commit will be 3.2.0+, but without the patch the version will be
3.2.0. This can cause problems when the kernelrelease is determined for
creating the /lib/modules directory. The kernel booting has the '+' but
the module directory will not, and the modules will be missing for that
boot, and may not allow the kernel to succeed.
The fix is to put the creation of the kernelrelease in the POST_BUILD
logic, before it applies the POST_BUILD operation. The POST_BUILD is
where the patch may be removed, removing the '+' from the kernelrelease.
The calculation of the kernelrelease will also stay in its current
location but will be ignored if it was already calculated previously.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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BugLink: http://bugs.launchpad.net/bugs/955892
All failures from __d_path where being treated as disconnected paths,
however __d_path can also fail when the generated pathname is too long.
The initial ENAMETOOLONG error was being lost, and ENAMETOOLONG was only
returned if the subsequent dentry_path call resulted in that error. Other
wise if the path was split across a mount point such that the dentry_path
fit within the buffer when the __d_path did not the failure was treated
as a disconnected path.
Signed-off-by: John Johansen <john.johansen@canonical.com>
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BugLink: http://bugs.launchpad.net/bugs/978038
also affects apparmor portion of
BugLink: http://bugs.launchpad.net/bugs/987371
The unconfined profile is not stored in the regular profile list, but
change_profile and exec transitions may want access to it when setting
up specialized transitions like switch to the unconfined profile of a
new policy namespace.
Signed-off-by: John Johansen <john.johansen@canonical.com>
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commit c57b5468406 (pktgen: fix crash at module unload) did a very poor
job with list primitives.
1) list_splice() arguments were in the wrong order
2) list_splice(list, head) has undefined behavior if head is not
initialized.
3) We should use the list_splice_init() variant to clear pktgen_threads
list.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Patch re-spin.
Incorporated review comments by Ben Hutchings.
Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some discussion with the glibc mailing lists revealed that this was
necessary for 64-bit platforms with MIPS-like sign-extension rules
for 32-bit values. The original symptom was that passing (uid_t)-1 to
setreuid() was failing in programs linked -pthread because of the "setxid"
mechanism for passing setxid-type function arguments to the syscall code.
SYSCALL_WRAPPERS handles ensuring that all syscall arguments end up with
proper sign-extension and is thus the appropriate fix for this problem.
On other platforms (s390, powerpc, sparc64, and mips) this was fixed
in 2.6.28.6. The general issue is tracked as CVE-2009-0029.
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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csummode variable is always CHECKSUM_NONE in ip6_append_data()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix two issues introduced in commit a1c7fff7e18f5
( net: netdev_alloc_skb() use build_skb() )
- Must be IRQ safe (non NAPI drivers can use it)
- Must not leak the frag if build_skb() fails to allocate sk_buff
This patch introduces netdev_alloc_frag() for drivers willing to
use build_skb() instead of __netdev_alloc_skb() variants.
Factorize code so that :
__dev_alloc_skb() is a wrapper around __netdev_alloc_skb(), and
dev_alloc_skb() a wrapper around netdev_alloc_skb()
Use __GFP_COLD flag.
Almost all network drivers now benefit from skb->head_frag
infrastructure.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As iwlwifi use fat skbs, it should not pull too much data in skb->head,
and particularly no tcp data payload, or splice() is slower, and TCP
coalescing is disabled. Copying payload to userland also involves at
least two copies (part from header, part from fragment)
Each layer will pull its header from the fragment as needed.
(on 64bit arches, skb_tailroom(skb) at this point is 192 bytes)
With this patch applied, I have a major reduction of collapsed/pruned
TCP packets, a nice increase of TCPRcvCoalesce counter, and overall
better Internet User experience.
Small packets are still using a fragless skb, so that page can be reused
by the driver.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull a machine check recovery fix from Tony Luck.
I really don't like how the MCE code does some of the things it does,
but this does seem to be an improvement.
* tag 'linus-mce-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
x86/mce: Only restart instruction after machine check recovery if it is safe
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Introduce codec for HDMI. At the moment, this is a dummy codec. In the
future it will parse the EDID to modify the supported parameters, such
as the number of channels and the sample rates. At the moment, it blindly
supports all the sample rates and audio channels described in the HDMI
1.4a specification.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Merge reason: We are going to queue up a dependent patch:
"perf tools: Move parse event automated tests to separated object"
That depends on:
commit e7c72d8
perf tools: Add 'G' and 'H' modifiers to event parsing
Conflicts:
tools/perf/builtin-stat.c
Conflicted with the recent 'perf_target' patches when checking the
result of perf_evsel open routines to see if a retry is needed to cope
with older kernels where the exclude guest/host perf_event_attr bits
were not used.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Add the new palmas MFD to Kconfig and Makefile
Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Palmas is a PMIC from Texas Instruments and this is the MFD part of the
driver for this chip. The PMIC has SMPS and LDO regulators, a general
purpose ADC, GPIO, USB OTG mode detection, watchdog and RTC features.
Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Here we use the previous regulator register code separated from probe to
register each of the regulators mentioned in Device Tree.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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This will provide us with a convenient way to register regulators when
booting with Device Tree both enabled & disabled and will save us a
great deal of code duplication in time.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Introducing type_val and type_term for term instead of a single type
value. Currently the term type marked out the value type as well.
With this change we can have future string term values being specified
by user and translated into proper number along the processing.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1335371102-11358-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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commit 1b1287032 (gpio/omap: fix missing check in *_runtime_suspend())
broke wakeups on level-triggered GPIOs by adding the enabled
non-wakeup GPIO check before the workaround that enables wakeups
on level-triggered IRQs, effectively disabling that workaround.
To fix, move the enabled non-wakeup GPIO check after the
level-triggered IRQ workaround.
Reported-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Tested-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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The fix in commit 1b1287032 (gpio/omap: fix missing check in
*_runtime_suspend()) exposed another bug in the context restore path.
Currently, the per-bank context restore happens whenever the context
loss count is different in runtime suspend and runtime resume *and*
whenever the per-bank contex_loss_count == 0:
if (context_lost_cnt_after != bank->context_loss_count ||
!context_lost_cnt_after) {
omap_gpio_restore_context(bank);
Restoring context when the context_lost_cnt_after == 0 is clearly
wrong, since this will be true until the first off-mode transition
(which could be never, if off-mode is never enabled.) This check
causes the context to be restored on *every* runtime PM transition.
Before commit 1b1287032 (gpio/omap: fix missing check in
*_runtime_suspend()), this code was never executed in non-OFF mode, so
there were never spurious context restores happening. After that
change though, spurious context restores could happen.
To fix, simply remove the !context_lost_cnt_after check. It is not
needed.
This bug was found when noticing that the smc911x NIC on 3530/Overo
was not working, and git bisect tracked it down to this patch. It
seems that the spurious context restore was causing the smsc911x to
not be properly probed on this platform.
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Signed-off-by: Mark Salter <msalter@redhat.com>
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There is an spin_unlock() missing on this error path.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The function is ext2_free_blocks(), not ext2_free_blocks_sb().
Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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This should help the merge with the at91 adc driver that is currently
in the staging tree.
* at91/dt:
ARM: at91: Add ADC driver to at91sam9260/at91sam9g20 dtsi files
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Now that the bulk of at91sam9g20-related nodes are located in at91sam9260.dtsi,
we have to re-create the path to this ADC node for SoC specific parts.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This update is for newer family 15h cpu models from 0x02 to 0x1f.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: stable@vger.kernel.org # v2.6.39+
Link: http://lkml.kernel.org/r/1337337642-1621-1-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Usually sleep-in-atomic bugs are followed by dozens other warnings.
This patch should help to figure out original source of problem.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120510122004.4873.12726.stgit@zurg
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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With the previous attempt reverted this switches to conditionalizing the
end address. Nominally VMALLOC_END, but extended for P3_ADDR_MAX in the
store queue case.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This reverts commit 20e7c297efeca0861adcca073a0d283da659834b.
With store queues enabled the area above P4SEG has special properties
from the MMU's point of view, which was causing fixmap failure. We'll
have to do something else to satisfy the vmalloc range check.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This lets the kernel tell userspace if the device supports prime
import/export.
This is useful for -modesetting at least, but would be nice for other
drivers.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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In doing the evt2irq() + muxed vector conversion for various port types
it became apparent that some of the legacy port types will presently
error out due to the irq requesting logic attempting to acquire the
non-existent BRI IRQ. This adds some sanity checks to the request/free
path to ensure that non-existence of a source in itself is not an error.
This should restore functionality for legacy PORT_SCI ports.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Conflicts:
arch/sh/kernel/cpu/sh3/setup-sh770x.c
arch/sh/kernel/cpu/sh3/setup-sh7710.c
arch/sh/kernel/cpu/sh3/setup-sh7720.c
arch/sh/kernel/cpu/sh4/setup-sh7750.c
arch/sh/kernel/cpu/sh4a/setup-sh7343.c
arch/sh/kernel/cpu/sh4a/setup-sh7366.c
arch/sh/kernel/cpu/sh4a/setup-sh7722.c
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
arch/sh/kernel/cpu/sh4a/setup-sh7724.c
arch/sh/kernel/cpu/sh4a/setup-sh7757.c
arch/sh/kernel/cpu/sh4a/setup-sh7763.c
arch/sh/kernel/cpu/sh4a/setup-sh7770.c
arch/sh/kernel/cpu/sh4a/setup-sh7785.c
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This converts over the legacy PCI IRQs to evt2irq() backed hwirq lookups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This migrates the cpu-family relative DMA IRQ definitions over to
evt2irq() backed hwirq lookups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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