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2011-05-24um: Use RWSEM_GENERIC_SPINLOCK on x86Richard Weinberger
Commit d12337 (rwsem: Remove redundant asmregparm annotation) broke rwsem on UML. As we cannot compile UML with -mregparm=3 and keeping asmregparm only for UML is inadequate the easiest solution is using RWSEM_GENERIC_SPINLOCK. Thanks to Thomas Gleixner for the idea. Reported-by: Toralf Förster <toralf.foerster@gmx.de> Tested-by: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Cc: <stable@kernel.org> # .39.x Link: http://lkml.kernel.org/r/%3C1306183893-26655-1-git-send-email-richard%40nod.at%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-24intel-iommu: Flush unmaps at domain_exitAlex Williamson
We typically batch unmaps to be lazily flushed out at regular intervals. When we destroy a domain, we need to force a flush of these lazy unmaps to be sure none reference the domain we're about to free. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=35062 Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2011-05-24intel-iommu: Remove obsolete comment from detect_intel_iommuJan Kiszka
Since cacd4213d8, this comment no longer applies. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-24intel-iommu: fix VT-d PMR disable for TXT on S3 resumeJoseph Cihula
This patch is a follow on to https://lkml.org/lkml/2011/3/21/239, which was merged as commit 51a63e67da6056c13b5b597dcc9e1b3bd7ceaa55. This patch adds support for S3, as pointed out by Chris Wright. Signed-off-by: Joseph Cihula <joseph.cihula@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-24oprofile: Use linux/mutex.hAnton Blanchard
The oprofile code is still including asm/mutex.h instead of linux/mutex.h. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-05-24ALSA: hda - Fix speaker auto-mute in Cxt auto-parserTakashi Iwai
Fix some logic failures in auto-mute handling in Conexant auto-parser. Also, modify codes to be a bit more understandable. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-24posix-timers: RCU conversionEric Dumazet
Ben Nagy reported a scalability problem with KVM/QEMU that hit very hard a single spinlock (idr_lock) in posix-timers code, on its 48 core machine. Even on a 16 cpu machine (2x4x2), a single test can show 98% of cpu time used in ticket_spin_lock, from lock_timer Ref: http://www.spinics.net/lists/kvm/msg51526.html Switching to RCU is quite easy, IDR being already RCU ready. idr_lock should be locked only for an insert/delete, not a lookup. Benchmark on a 2x4x2 machine, 16 processes calling timer_gettime(). Before : real 1m18.669s user 0m1.346s sys 1m17.180s After : real 0m3.296s user 0m1.366s sys 0m1.926s Reported-by: Ben Nagy <ben@iagu.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Ben Nagy <ben@iagu.net> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Richard Cochran <richard.cochran@omicron.at> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-24oprofile, powerpc: Handle events that raise an exception without overflowingEric B Munson
Commit 0837e3242c73566fc1c0196b4ec61779c25ffc93 fixes a situation on POWER7 where events can roll back if a specualtive event doesn't actually complete. This can raise a performance monitor exception. We need to catch this to ensure that we reset the PMC. In all cases the PMC will be less than 256 cycles from overflow. This patch lifts Anton's fix for the problem in perf and applies it to oprofile as well. Signed-off-by: Eric B Munson <emunson@mgebm.net> Cc: <stable@kernel.org> # as far back as it applies cleanly Tested-by: Maynard Johnson <maynardj@us.ibm.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-05-24video: s3c-fb: correct transparency checking in 32bppJingoo Han
32bpp means ARGB 8888 in the driver, therfore the transparency length and offset should be 8 and 24 respectively. However, the transparency length and offset were previously 0, which means that the driver supports RGB 888 without alpha blending when 32bpp is used. So, the transparency checking in 32bpp is corrected so that the transparency length and offset are 8 and 24 respectively. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video: s3c-fb: add gpio setup function to resume functionJingoo Han
This patch adds gpio setup function to resume function to ensure gpio used by FIMD IP and LCD panel during a resume. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24drbd: fix warningAndrew Morton
In file included from drivers/block/drbd/drbd_main.c:54: drivers/block/drbd/drbd_int.h:1190: warning: parameter has incomplete type Forward declarations of enums do not work. Fix it unpleasantly by moving the prototype. Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Lars Ellenberg <drbd-dev@lists.linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2011-05-24drbd: fix warningPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
2011-05-24sh: Update shmin to reflect PIO dependency.Paul Mundt
shmin uses __set_io_port_base() for legacy I/O mapping that ethernet and other SuperI/O functions depend on. Ensure that PIO support is built in until the board is updated for MMIO properly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24sh: arch/sh/kernel/process_32.c needs linux/prefetch.h.Paul Mundt
Trivial build fix for certain configurations that don't grab linux/prefetch.h via alternate means (specifically SH-2 and SH-3 parts). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24cfq-iosched: free cic_index if cfqd allocation failsNamhyung Kim
When struct cfq_data allocation fails, cic_index need to be freed. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-05-24cfq-iosched: remove unused 'group_changed' in cfq_service_tree_add()Namhyung Kim
The 'group_changed' variable is initialized to 0 and never changed, so checking the variable is meaningless. It is a leftover from 0bbfeb832042 ("cfq-iosched: Always provide group iosolation."). Let's get rid of it. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Justin TerAvest <teravest@google.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-05-24cfq-iosched: reduce bit operations in cfq_choose_req()Namhyung Kim
Reduce the number of bit operations in cfq_choose_req() on average (and worst) cases. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-05-24cfq-iosched: algebraic simplification in cfq_prio_to_maxrq()Namhyung Kim
Simplify the calculation in cfq_prio_to_maxrq(), plus replace CFQ_PRIO_LISTS to IOPRIO_BE_NR since they are the same and IOPRIO_BE_NR looks more reasonable in this context IMHO. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-05-24drbd: Fix spellingBart Van Assche
Found these with the help of ispell -l. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
2011-05-24drbd: fix schedule in atomicLars Ellenberg
An administrative detach used to request a state change directly to D_DISKLESS, first suspending IO to avoid the last put_ldev() occuring from an endio handler, potentially in irq context. This is not enough on the receiving side (typically secondary), we may miss some peer_req on the way to local disk, which then may do the last put_ldev() from their drbd_peer_request_endio(). This patch makes the detach always go through the intermediate D_FAILED state. We may consider to rename it D_DETACHING. Alternative approach would be to create yet an other work item to be scheduled on the worker, do the destructor work from there, and get the timing right. manually picked commit 564040f from the drbd 8.4 branch. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Take a more conservative approach when deciding max_bio_sizePhilipp Reisner
The old (optimistic) implementation could shrink the bio size on an primary device. Shrinking the bio size on a primary device is bad. Since there we might get BIOs with the old (bigger) size shortly after we published the new size. The new implementation is more conservative, and eventually increases the max_bio_size on a primary device (which is valid). It does so, when it knows the local limit AND the remote limit. We cache the last seen max_bio_size of the peer in the meta data, and rely on that, to make the operation of single nodes more efficient. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Fixed state transitions after async outdate-peer-handler returnedPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Disallow the peer_disk_state to be D_OUTDATED while connectedPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Fix for the connection problems on high latency linksPhilipp Reisner
It seems that the real cause of all the issues where that we did not noticed in drbd_try_connect() when the other guy closes one socket if the round trip time gets higher than 100ms. There were that 100ms hard coded! Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: fix potential activity log refcount imbalance in error pathLars Ellenberg
It is no longer sufficient to trigger on local WRITE, we need to check on (rq_state & RQ_IN_ACT_LOG) before calling drbd_al_complete_io also in the error path. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Only downgrade the disk state in case of disk failuresPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: fix disconnect/reconnect loop, if ping-timeout == ping-intLars Ellenberg
If there is no replication traffic within the idle timeout (ping-int seconds), DRBD will send a P_PING, and adjust the timeout to ping-timeout. If there is no P_PING_ACK received within this ping-timeout, DRBD finally drops the connection, and tries to re-establish it. To decide which timeout was active, we compared the current timeout with the ping-timeout, and dropped the connection, if that was the case. By default, ping-int is 10 seconds, ping-timeout is 500 ms. Unfortunately, if you configure ping-timeout to be the same as ping-int, expiry of the idle-timeout had been mistaken for a missing ping ack, and caused an immediate reconnection attempt. Fix: Allow both timeouts to be equal, use a local variable to store which timeout is active. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: fix potential distributed deadlockLars Ellenberg
We limit ourselves to a configurable maximum number of pages used as temporary bio pages. If the configured "max_buffers" is not big enough to match the bandwidth of the respective deployment, a distributed deadlock could be triggered by e.g. fast online verify and heavy application IO. TCP connections would block on congestion, because both receivers would wait on pages to become available. Fortunately the respective senders in this case would be able to give back some pages already. So do that. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24lru_cache.h: fix comments referring to ts_ instead of lc_Lars Ellenberg
For some time we contemplated calling the "struct lru_cache" a "struct tracked_set", and some comments kept the ts_ prefix. Fix those to match the member field names. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24drbd: Fix for application IO with the on-io-error=pass-on policyPhilipp Reisner
In case a write failes on the local disk, go into D_INCONSISTENT disk state. That causes future reads of that block to be shipped to the peer. Read retry remote was already in place. Actually the documentation needs to get fixed now. Since the application is still shielded from the error. (as long as we have only a single disk failing) The difference to detach is that we keep the disk. And therefore might keep all the other, still working sectors up to date. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-05-24Merge branch 'fixes-2.6.39' into for-2.6.40Tejun Heo
2011-05-24Merge branch 'for_2.6.40/pm-cleanup' of ↵Tony Lindgren
ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus
2011-05-24fbdev/amifb: Remove superfluous alignment of frame buffer memoryGeert Uytterhoeven
amiga_chip_alloc() already aligns to the PAGE_SIZE Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24fbdev/amifb: Do not call panic() if there's not enough Chip RAMGeert Uytterhoeven
Fail gracefully instead. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24fbdev/amifb: Correct check for video memory sizeGeert Uytterhoeven
The check should compare the available memory size with the highest allocation value (VIDEOMEMSIZE_*_2M), not with the lowest value (VIDEOMEMSIZE_*_1M). Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video: mb862xxfb: Require either FB_MB862XX_PCI_GDC or FB_MB862XX_LIMEBen Hutchings
The driver can be built as either a PCI or platform (OF) driver. It might make sense to built it as both (though that is not currently possible) but it certainly doesn't make sense to build it as neither! Add dependencies and add a choice group to ensure that exactly one of FB_MB862XX_PCI_GDC and FB_MB862XX_LIME is selected. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video: s3c-fb: add window variant information for S5PJingoo Han
Compared to s3c64xx, S5P series such as S5PC100 and S5PV210 have the different window features including valid bpp, palette size and palette bpp. Therefore, window variant information for S5P should be added. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video: s3c-fb: add additional validate bppsJingoo Han
Additional validate bpps are added to windows as follows: window0: 18 bpp for RGB666 window1, 2 and 3: 28 bpp for ARGB4888 window4: 19 bpp for ARGB1666, 28 bpp for ARGB4888 Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video: s3c-fb: correct window osd size offset valuesJingoo Han
Offset values for OSD size registers of window 1 and 2 are corrected. The offset values of OSD size registers are as follows: window0: VIDOSDC (0x8) window1 and 2: VIDOSDD (0xc) window3 and 4: not present Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24udlfb: include prefetch.h explicitlyStephen Rothwell
Commit e66eed651fd1 ("list: remove prefetching from regular list iterators") removed the include of prefetch.h from list.h, so we need to include it explicitly, now. fixes this build error on powerpc: drivers/video/udlfb.c: In function 'dlfb_compress_hline': drivers/video/udlfb.c:421: error: implicit declaration of function 'prefetch_range' Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24drivers/video/s3c2410fb.c: Convert release_resource to release_mem_regionJulia Lawall
Request_mem_region should be used with release_mem_region, not release_resource. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s exists@ expression e1,e2,e3,e4,e; @@ *e4 = request_mem_region(e1,e2,e3) ... when != e4 = e *release_resource(e4); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24drivers/video/sm501fb.c: Convert release_resource to release_mem_regionJulia Lawall
Request_mem_region should be used with release_mem_region, not release_resource. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s exists@ expression e1,e2,e3,e4,e; @@ *e4 = request_mem_region(e1,e2,e3) ... when != e4 = e *release_resource(e4); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24drivers/video: Convert release_resource to release_mem_regionJulia Lawall
Request_mem_region should be used with release_mem_region, not release_resource. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s exists@ expression e1,e2,e3,e4,e; @@ *e4 = request_mem_region(e1,e2,e3) ... when != e4 = e *release_resource(e4); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24video, udlfb: Fix two build warnings about 'ignoring return value'Liu Yuan
build warning: ... drivers/video/udlfb.c:1590: warning: ignoring return value of ‘device_create_file’, declared with attribute warn_unused_result drivers/video/udlfb.c:1592: warning: ignoring return value of ‘device_create_bin_file’, declared with attribute warn_unused_result ... So add two checks to get rid of 'em. Signed-off-by: Liu Yuan <tailai.ly@taobao.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24Merge branch 'next' into for-linusDmitry Torokhov
2011-05-24savagefb: Enable LCD detection on mobile TwisterTormod Volden
Copy and paste from the Xorg DDX. Tested on TwisterK (Compaq Presario 700). Signed-off-by: Tormod Volden <debian.tormod@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24savagefb: New S3_TWISTER and S3_PROSAVAGEDDR chip familiesTormod Volden
Realign the chip families with the Xorg DDX Signed-off-by: Tormod Volden <debian.tormod@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-24Merge branch 'for-tony' of ↵Tony Lindgren
master.kernel.org:/pub/scm/linux/kernel/git/balbi/usb into omap-for-linus
2011-05-24video: da8xx-fb: fix section mismatch warningaxel lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23ocfs2: change incorrect 'extern' keyword to 'static' in dlmfsRobin Dong
Change function param_set_dlmfs_capabilities from 'extern' to 'static' since function param_get_dlmfs_capabilities is also 'static'. Signed-off-by: Robin Dong <sanbai@taobao.com> Signed-off-by: Joel Becker <jlbec@evilplan.org>
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