21 Apr, 2010
1 commit
-
blkio + cfq was crashing even when two sequential readers were put in two
separate cgroups (group_isolation=0).The reason being that cfqq can migrate across groups based on its being
sync-noidle or not, it can happen that at request insertion time, cfqq
belonged to one cfqg and at request dispatch time, it belonged to root
group. In this case request stats per cgroup can go wrong and it also runs
into BUG_ON().This patch implements rq stashing away a cfq group pointer and not relying
on cfqq->cfqg pointer alone for rq stat accounting.[ 65.163523] ------------[ cut here ]------------
[ 65.164301] kernel BUG at block/blk-cgroup.c:117!
[ 65.164301] invalid opcode: 0000 [#1] SMP
[ 65.164301] last sysfs file: /sys/devices/pci0000:00/0000:00:05.0/0000:60:00.1/host9/rport-9:0-0/target9:0:0/9:0:0:2/block/sde/stat
[ 65.164301] CPU 1
[ 65.164301] Modules linked in: dm_round_robin dm_multipath qla2xxx scsi_transport_fc dm_zero dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
[ 65.164301]
[ 65.164301] Pid: 4505, comm: fio Not tainted 2.6.34-rc4-blk-for-35 #34 0A98h/HP xw8600 Workstation
[ 65.164301] RIP: 0010:[] [] blkiocg_update_io_remove_stats+0x5b/0xaf
[ 65.164301] RSP: 0018:ffff8800ba5a79e8 EFLAGS: 00010046
[ 65.164301] RAX: 0000000000000096 RBX: ffff8800bb268d60 RCX: 0000000000000000
[ 65.164301] RDX: ffff8800bb268eb8 RSI: 0000000000000000 RDI: ffff8800bb268e00
[ 65.164301] RBP: ffff8800ba5a7a08 R08: 0000000000000064 R09: 0000000000000001
[ 65.164301] R10: 0000000000079640 R11: ffff8800a0bd5bf0 R12: ffff8800bab4af01
[ 65.164301] R13: ffff8800bab4af00 R14: ffff8800bb1d8928 R15: 0000000000000000
[ 65.164301] FS: 00007f18f75056f0(0000) GS:ffff880001e40000(0000) knlGS:0000000000000000
[ 65.164301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 65.164301] CR2: 000000000040e7f0 CR3: 00000000ba52b000 CR4: 00000000000006e0
[ 65.164301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 65.164301] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 65.164301] Process fio (pid: 4505, threadinfo ffff8800ba5a6000, task ffff8800ba45ae80)
[ 65.164301] Stack:
[ 65.164301] ffff8800ba5a7a08 ffff8800ba722540 ffff8800bab4af68 ffff8800bab4af68
[ 65.164301] ffff8800ba5a7a38 ffffffff8121d814 ffff8800ba722540 ffff8800bab4af68
[ 65.164301] ffff8800ba722540 ffff8800a08f6800 ffff8800ba5a7a68 ffffffff8121d8ca
[ 65.164301] Call Trace:
[ 65.164301] [] cfq_remove_request+0xe4/0x116
[ 65.164301] [] cfq_dispatch_insert+0x84/0xe1
[ 65.164301] [] cfq_dispatch_requests+0x767/0x8e8
[ 65.164301] [] ? submit_bio+0xc3/0xcc
[ 65.164301] [] ? sync_page_killable+0x0/0x35
[ 65.164301] [] blk_peek_request+0x191/0x1a7
[ 65.164301] [] ? dm_get_live_table+0x44/0x4f [dm_mod]
[ 65.164301] [] dm_request_fn+0x38/0x14c [dm_mod]
[ 65.164301] [] ? sync_page_killable+0x0/0x35
[ 65.164301] [] __generic_unplug_device+0x32/0x37
[ 65.164301] [] generic_unplug_device+0x2e/0x3c
[ 65.164301] [] dm_unplug_all+0x42/0x5b [dm_mod]
[ 65.164301] [] blk_unplug+0x29/0x2d
[ 65.164301] [] blk_backing_dev_unplug+0x12/0x14
[ 65.164301] [] block_sync_page+0x35/0x39
[ 65.164301] [] sync_page+0x41/0x4a
[ 65.164301] [] sync_page_killable+0xe/0x35
[ 65.164301] [] __wait_on_bit_lock+0x46/0x8f
[ 65.164301] [] __lock_page_killable+0x66/0x6d
[ 65.164301] [] ? wake_bit_function+0x0/0x33
[ 65.164301] [] lock_page_killable+0x2c/0x2e
[ 65.164301] [] generic_file_aio_read+0x361/0x4f0
[ 65.164301] [] do_sync_read+0xcb/0x108
[ 65.164301] [] ? security_file_permission+0x16/0x18
[ 65.164301] [] vfs_read+0xab/0x108
[ 65.164301] [] sys_read+0x4a/0x6e
[ 65.164301] [] system_call_fastpath+0x16/0x1b
[ 65.164301] Code: 00 74 1c 48 8b 8b 60 01 00 00 48 85 c9 75 04 0f 0b eb fe 48 ff c9 48 89 8b 60 01 00 00 eb 1a 48 8b 8b 58 01 00 00 48 85 c9 75 04 0b eb fe 48 ff c9 48 89 8b 58 01 00 00 45 84 e4 74 16 48 8b
[ 65.164301] RIP [] blkiocg_update_io_remove_stats+0x5b/0xaf
[ 65.164301] RSP
[ 65.164301] ---[ end trace 1b2b828753032e68 ]---Signed-off-by: Vivek Goyal
Signed-off-by: Jens Axboe
14 Apr, 2010
1 commit
-
Conflicts:
block/blk-cgroup.c
block/cfq-iosched.cSigned-off-by: Jens Axboe
10 Apr, 2010
3 commits
-
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits)
cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch
loop: Update mtime when writing using aops
block: expose the statistics in blkio.time and blkio.sectors for the root cgroup
backing-dev: Handle class_create() failure
Block: Fix block/elevator.c elevator_get() off-by-one error
drbd: lc_element_by_index() never returns NULL
cciss: unlock on error path
cfq-iosched: Do not merge queues of BE and IDLE classes
cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging
i2o: Remove the dangerous kobj_to_i2o_device macro
block: remove 16 bytes of padding from struct request on 64bits
cfq-iosched: fix a kbuild regression
block: make CONFIG_BLK_CGROUP visible
Remove GENHD_FL_DRIVERFS
block: Export max number of segments and max segment size in sysfs
block: Finalize conversion of block limits functions
block: Fix overrun in lcm() and move it to lib
vfs: improve writeback_inodes_wb()
paride: fix off-by-one test
drbd: fix al-to-on-disk-bitmap for 4k logical_block_size
... -
radix_tree_tag_get() is not safe to use concurrently with radix_tree_tag_set()
or radix_tree_tag_clear(). The problem is that the double tag_get() in
radix_tree_tag_get():if (!tag_get(node, tag, offset))
saw_unset_tag = 1;
if (height == 1) {
int ret = tag_get(node, tag, offset);may see the value change due to the action of set/clear. RCU is no protection
against this as no pointers are being changed, no nodes are being replaced
according to a COW protocol - set/clear alter the node directly.The documentation in linux/radix-tree.h, however, says that
radix_tree_tag_get() is an exception to the rule that "any function modifying
the tree or tags (...) must exclude other modifications, and exclude any
functions reading the tree".The problem is that the next statement in radix_tree_tag_get() checks that the
tag doesn't vary over time:BUG_ON(ret && saw_unset_tag);
This has been seen happening in FS-Cache:
https://www.redhat.com/archives/linux-cachefs/2010-April/msg00013.html
To this end, remove the BUG_ON() from radix_tree_tag_get() and note in various
comments that the value of the tag may change whilst the RCU read lock is held,
and thus that the return value of radix_tree_tag_get() may not be relied upon
unless radix_tree_tag_set/clear() and radix_tree_delete() are excluded from
running concurrently with it.Reported-by: Romain DEGEZ
Signed-off-by: David Howells
Acked-by: Nick Piggin
Signed-off-by: Linus Torvalds -
As suggested by Linus, introduce a kern_ptr_validate() helper that does some
sanity checks to make sure a pointer is a valid kernel pointer. This is a
preparational step for fixing SLUB kmem_ptr_validate().Cc: Andrew Morton
Cc: Christoph Lameter
Cc: David Rientjes
Cc: Ingo Molnar
Cc: Matt Mackall
Cc: Nick Piggin
Signed-off-by: Pekka Enberg
Signed-off-by: Linus Torvalds
09 Apr, 2010
3 commits
-
This includes both the number of bios merged into requests belonging to this
cgroup as well as the number of requests merged together.
In the past, we've observed different merging behavior across upstream kernels,
some by design some actual bugs. This stat helps a lot in debugging such
problems when applications report decreased throughput with a new kernel
version.This needed adding an extra elevator function to capture bios being merged as I
did not want to pollute elevator code with blkiocg knowledge and hence needed
the accounting invocation to come from CFQ.Signed-off-by: Divyesh Shah
Signed-off-by: Jens Axboe -
that include some minor fixes and addresses all comments.
Changelog: (most based on Vivek Goyal's comments)
o renamed blkiocg_reset_write to blkiocg_reset_stats
o more clarification in the documentation on io_service_time and io_wait_time
o Initialize blkg->stats_lock
o rename io_add_stat to blkio_add_stat and declare it static
o use bool for direction and sync
o derive direction and sync info from existing rq methods
o use 12 for major:minor string length
o define io_service_time better to cover the NCQ case
o add a separate reset_stats interface
o make the indexed stats a 2d array to simplify macro and function pointer code
o blkio.time now exports in jiffies as before
o Added stats description in patch description and
Documentation/cgroup/blkio-controller.txt
o Prefix all stats functions with blkio and make them static as applicable
o replace IO_TYPE_MAX with IO_TYPE_TOTAL
o Moved #define constant to top of blk-cgroup.c
o Pass dev_t around instead of char *
o Add note to documentation file about resetting stats
o use BLK_CGROUP_MODULE in addition to BLK_CGROUP config option in #ifdef
statements
o Avoid struct request specific knowledge in blk-cgroup. blk-cgroup.h now has
rq_direction() and rq_sync() functions which are used by CFQ and when using
io-controller at a higher level, bio_* functions can be added.Signed-off-by: Divyesh Shah
Signed-off-by: Jens Axboe -
Most drives from Seagate, Hitachi, and possibly other brands,
do not allow LBA28 access to sector number 0x0fffffff (2^28 - 1).
So instead use LBA48 for such accesses.This bug could bite a lot of systems, especially when the user has
taken care to align partitions to 4KB boundaries. On misaligned systems,
it is less likely to be encountered, since a 4KB read would end at
0x10000000 rather than at 0x0fffffff.Signed-off-by: Mark Lord
Signed-off-by: Jeff Garzik
08 Apr, 2010
3 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
ide: Fix IDE taskfile with cfq scheduler
ide: Must hold queue lock when requeueing
ide: Requeue request after DMA timeout -
Move MULTIPORT feature and related config changes
out of exported headers, and disable the feature
at runtime.At this point, it seems less risky to keep code around
until we can enable it than rip it out completely.Signed-off-by: Michael S. Tsirkin
Signed-off-by: Rusty Russell -
…git/x86/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards
x86: Increase CONFIG_NODES_SHIFT max to 10
ibft, x86: Change reserve_ibft_region() to find_ibft_region()
x86, hpet: Fix bug in RTC emulation
x86, hpet: Erratum workaround for read after write of HPET comparator
bootmem, x86: Fix 32bit numa system without RAM on node 0
nobootmem, x86: Fix 32bit numa system without RAM on node 0
x86: Handle overlapping mptables
x86: Make e820_remove_range to handle all covered case
x86-32, resume: do a global tlb flush in S4 resume
07 Apr, 2010
9 commits
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: mixart: range checking proc file
ALSA: hda - Fix a wrong array range check in patch_realtek.c
ALSA: ASoC: move dma_data from snd_soc_dai to snd_soc_pcm_stream
ALSA: hda - Enable amplifiers on Acer Inspire 6530G
ASoC: Only do WM8994 bias off transition from standby
ASoC: Don't use DCS_DATAPATH_BUSY for WM hubs devices
ASoC: Don't do runtime wm_hubs DC servo updates if using offset correction
ASoC: Support second DC servo readback method for wm_hubs
ASoC: Avoid wraparound in wm_hubs DC servo correction
ALSA: echoaudio - Eliminate use after free
ALSA: i2c: cleanup: change parameter to pointer
ALSA: hda - Add MSI blacklist for Aopen MZ915-M
ASoC: OMAP: Fix capture pointer handling for OMAP1510 to work correctly with recent ALSA PCM code
ALSA: hda - Update document about MSI and interrupts
ALSA: hda: Fix 0 dB offset for Lenovo Thinkpad models using AD1981
ALSA: hda - Add missing printk argument in previous patch
ASoC: Fix passing platform_data to ac97 bus users and fix a leak
ALSA: hda - Fix ADC/MUX assignment of ALC269 codec
ALSA: hda - Fix invalid bit values passed to snd_hda_codec_amp_stereo()
ASoC: wm8994: playback => capture -
Presently, memcg's FILE_MAPPED accounting has following race with
move_account (happens at rmdir()).increment page->mapcount (rmap.c)
mem_cgroup_update_file_mapped() move_account()
lock_page_cgroup()
check page_mapped() if
page_mapped(page)>1 {
FILE_MAPPED -1 from old memcg
FILE_MAPPED +1 to old memcg
}
.....
overwrite pc->mem_cgroup
unlock_page_cgroup()
lock_page_cgroup()
FILE_MAPPED + 1 to pc->mem_cgroup
unlock_page_cgroup()Then,
old memcg (-1 file mapped)
new memcg (+2 file mapped)This happens because move_account see page_mapped() which is not guarded
by lock_page_cgroup(). This patch adds FILE_MAPPED flag to page_cgroup
and move account information based on it. Now, all checks are synchronous
with lock_page_cgroup().Signed-off-by: KAMEZAWA Hiroyuki
Reviewed-by: Balbir Singh
Reviewed-by: Daisuke Nishimura
Cc: Andrea Righi
Cc: Andrea Arcangeli
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When we look into pagemap using page-types with option -p, the value of
pfn for hugepages looks wrong (see below.) This is because pte was
evaluated only once for one vma although it should be updated for each
hugepage. This patch fixes it.$ page-types -p 3277 -Nl -b huge
voffset offset len flags
7f21e8a00 11e400 1 ___U___________H_G________________
7f21e8a01 11e401 1ff ________________TG________________
^^^
7f21e8c00 11e400 1 ___U___________H_G________________
7f21e8c01 11e401 1ff ________________TG________________
^^^One hugepage contains 1 head page and 511 tail pages in x86_64 and each
two lines represent each hugepage. Voffset and offset mean virtual
address and physical address in the page unit, respectively. The
different hugepages should not have the same offset value.With this patch applied:
$ page-types -p 3386 -Nl -b huge
voffset offset len flags
7fec7a600 112c00 1 ___UD__________H_G________________
7fec7a601 112c01 1ff ________________TG________________
^^^
7fec7a800 113200 1 ___UD__________H_G________________
7fec7a801 113201 1ff ________________TG________________
^^^
OKMore info:
- This patch modifies walk_page_range()'s hugepage walker. But the
change only affects pagemap_read(), which is the only caller of hugepage
callback.- Without this patch, hugetlb_entry() callback is called per vma, that
doesn't match the natural expectation from its name.- With this patch, hugetlb_entry() is called per hugepte entry and the
callback can become much simpler.Signed-off-by: Naoya Horiguchi
Signed-off-by: KAMEZAWA Hiroyuki
Acked-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When __ratelimit() returns 1 this means that we can go ahead.
Signed-off-by: Yong Zhang
Cc: Ingo Molnar
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Requested by hch, for consistency now it is exported.
Cc: Alexander Viro
Cc: Anton Blanchard
Cc: Christoph Hellwig
Cc: Jan Kara
Cc: Jeff Moyer
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit 148f948ba877f4d3cdef036b1ff6d9f68986706a (vfs: Introduce new
helpers for syncing after writing to O_SYNC file or IS_SYNC inode) broke
the raw driver.We now call through generic_file_aio_write -> generic_write_sync ->
vfs_fsync_range. vfs_fsync_range has:if (!fop || !fop->fsync) {
ret = -EINVAL;
goto out;
}But drivers/char/raw.c doesn't set an fsync method.
We have two options: fix it or remove the raw driver completely. I'm
happy to do either, the fact this has been broken for so long suggests it
is rarely used.The patch below adds an fsync method to the raw driver. My knowledge of
the block layer is pretty sketchy so this could do with a once over.If we instead decide to remove the raw driver, this patch might still be
useful as a backport to 2.6.33 and 2.6.32.Signed-off-by: Anton Blanchard
Reviewed-by: Jan Kara
Cc: Christoph Hellwig
Cc: Alexander Viro
Cc: Jens Axboe
Reviewed-by: Jeff Moyer
Tested-by: Jeff Moyer
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
DECLARE_KFIFO creates a union with a struct kfifo and a buffer array with
size [size + sizeof(struct kfifo)].INIT_KFIFO then sets the buffer pointer in struct kfifo to point to the
beginning of the buffer array which means that the first call to kfifo_in
will overwrite members of the struct kfifo.Signed-off-by: David Härdeman
Acked-by: Stefani Seibold
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Migration has been completed so remove this now. There's one straggler in
linux-next's drivers/mtd/sm_ftl.c. A patch has been sent.Cc: Akinobu Mita
Cc: Stephen Rothwell
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Apr, 2010
8 commits
-
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: unlock HPA if device shrunk
libata: disable NCQ on Crucial C300 SSD
libata: don't whine on spurious IRQ -
Some BIOSes don't configure HPA during boot but do so while resuming.
This causes harddrives to shrink during resume making libata detach
and reattach them. This can be worked around by unlocking HPA if old
size equals native size.Add ATA_DFLAG_UNLOCK_HPA so that HPA unlocking can be controlled
per-device and update ata_dev_revalidate() such that it sets
ATA_DFLAG_UNLOCK_HPA and fails with -EIO when the above condition is
detected.This patch fixes the following bug.
https://bugzilla.kernel.org/show_bug.cgi?id=15396
Signed-off-by: Tejun Heo
Reported-by: Oleksandr Yermolenko
Signed-off-by: Jeff Garzik -
One of the features of laptop-mode is that it forces a writeout of dirty
pages if something else triggers a physical read or write from a device.
The current implementation flushes pages on all devices, rather than only
the one that triggered the flush. This patch alters the behaviour so that
only the recently accessed block device is flushed, preventing other
disks being spun up for no terribly good reason.Signed-off-by: Matthew Garrett
Signed-off-by: Jens Axboe -
Module refcounting is implemented with a per-cpu counter for speed.
However there is a race when tallying the counter where a reference may
be taken by one CPU and released by another. Reference count summation
may then see the decrement without having seen the previous increment,
leading to lower than expected count. A module which never has its
actual reference drop below 1 may return a reference count of 0 due to
this race.Module removal generally runs under stop_machine, which prevents this
race causing bugs due to removal of in-use modules. However there are
other real bugs in module.c code and driver code (module_refcount is
exported) where the callers do not run under stop_machine.Fix this by maintaining running per-cpu counters for the number of
module refcount increments and the number of refcount decrements. The
increments are tallied after the decrements, so any decrement seen will
always have its corresponding increment counted. The final refcount is
the difference of the total increments and decrements, preventing a
low-refcount from being returned.Signed-off-by: Nick Piggin
Acked-by: Rusty Russell
Signed-off-by: Linus Torvalds -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
9p: saving negative to unsigned char
9p: return on mutex_lock_interruptible()
9p: Creating files with names too long should fail with ENAMETOOLONG.
9p: Make sure we are able to clunk the cached fid on umount
9p: drop nlink remove
fs/9p: Clunk the fid resulting from partial walk of the name
9p: documentation update
9p: Fix setting of protocol flags in v9fs_session_info structure. -
This fixes a memory corruption when ASoC devices are used in
full-duplex mode. Specifically for pxa-ssp code, where this pointer
is dynamically allocated for each direction and destroyed upon each
stream start.All other platforms are fixed blindly, I couldn't even compile-test
them. Sorry for any breakage I may have caused.[Note that this is a backported version for 2.6.34.
Upstream commit is fd23b7dee]Signed-off-by: Daniel Mack
Reported-by: Sven Neumann
Reported-by: Michael Hirsch
Acked-by: Liam Girdwood
Signed-off-by: Mark Brown -
* 'slabh' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc:
eeepc-wmi: include slab.h
staging/otus: include slab.h from usbdrv.h
percpu: don't implicitly include slab.h from percpu.h
kmemcheck: Fix build errors due to missing slab.h
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
iwlwifi: don't include iwl-dev.h from iwl-devtrace.h
x86: don't include slab.h from arch/x86/include/asm/pgtable_32.hFix up trivial conflicts in include/linux/percpu.h due to
is_kernel_percpu_address() having been introduced since the slab.h
cleanup with the percpu_up.c splitup. -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
module: add stub for is_module_percpu_address
percpu, module: implement and use is_kernel/module_percpu_address()
module: encapsulate percpu handling better and record percpu_size
05 Apr, 2010
3 commits
-
dcache prune happen on umount. So we cannot mark the client
satus disconnect. That will prevent a 9p call to the serverSigned-off-by: Aneesh Kumar K.V
Signed-off-by: Eric Van Hensbergen -
…/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf: Always build the powerpc perf_arch_fetch_caller_regs version
perf: Always build the stub perf_arch_fetch_caller_regs version
perf, probe-finder: Build fix on Debian
perf/scripts: Tuple was set from long in both branches in python_process_event()
perf: Fix 'perf sched record' deadlock
perf, x86: Fix callgraphs of 32-bit processes on 64-bit kernels
perf, x86: Fix AMD hotplug & constraint initialization
x86: Move notify_cpu_starting() callback to a later stage
x86,kgdb: Always initialize the hw breakpoint attribute
perf: Use hot regs with software sched switch/migrate events
perf: Correctly align perf event tracing buffer
04 Apr, 2010
1 commit
-
We actually pass an array of 7 chars not 5.
This silences a smatch warning.Signed-off-by: Dan Carpenter
Signed-off-by: Takashi Iwai
03 Apr, 2010
3 commits
-
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 5965/1: Fix soft lockup in at91 udc driver
ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds
ARM: 6005/1: arm: kprobes: fix register corruption with jprobes
ARM: 6003/1: removing compilation warning from pl061.h
ARM: 6001/1: removing compilation warning comming from clkdev.h
ARM: 6000/1: removing compilation warning comming from
ARM: 5999/1: Including device.h and resource.h header files in linux/amba/bus.h
ARM: 5997/1: ARM: Correct the VFPv3 detection
ARM: 5996/1: ARM: Change the mandatory barriers implementation (4/4)
ARM: 5995/1: ARM: Add L2x0 outer_sync() support (3/4)
ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)
ARM: 5993/1: ARM: Move the outer_cache definitions into a separate file (1/4) -
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
Freezer: Fix buggy resume test for tasks frozen with cgroup freezer
Freezer: Only show the state of tasks refusing to freeze -
…eric/random-tracing into perf/urgent
02 Apr, 2010
4 commits
-
We also add start_time_ns and io_start_time_ns fields to struct request
here to record the time when a request is created and when it is
dispatched to device. We use ns uints here as ms and jiffies are
not very useful for non-rotational media.Signed-off-by: Divyesh Shah
Signed-off-by: Jens Axboe -
This allows arch code could decide the way to reserve the ibft.
And we should reserve ibft as early as possible, instead of BOOTMEM
stage, in case the table is in RAM range and is not reserved by BIOS
(this will often be the case.)Move to just after find_smp_config().
Also when CONFIG_NO_BOOTMEM=y, We will not have reserve_bootmem() anymore.
-v2: fix typo about ibft pointed by Konrad Rzeszutek Wilk
Signed-off-by: Yinghai Lu
LKML-Reference:
Cc: Pekka Enberg
Cc: Peter Jones
Cc: Konrad Rzeszutek Wilk
CC: Jan Beulich
Signed-off-by: H. Peter Anvin -
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (76 commits)
drm/radeon/kms: enable ACPI powermanagement mode on radeon gpus.
drm/radeon/kms: rs400/480 should set common registers.
drm/radeon/kms: add sanity check to wptr.
drm/radeon/kms/evergreen: get DP working
drm/radeon/kms: add hw_i2c module option
drm/radeon/kms: use new pre/post_xfer i2c bit algo hooks
drm/radeon/kms: disable MSI on IGP chips
drm/radeon/kms: display watermark updates (v2)
drm/radeon/kms/dp: disable training pattern on the sink at the end of link training
drm/radeon/kms: minor fixes for eDP with LCD* device tags (v2)
drm/radeon/kms/dp: remove extraneous training complete call
drm/radeon/kms/atom: minor fixes to transmitter setup
drm/radeon/kms: Only restrict BO to visible VRAM size when pinning to VRAM.
drm: fix build error when SYSRQ is disabled
drm/radeon/kms: fix macbookpro connector quirk
drm/radeon/r6xx/r7xx: further safe reg clean up
drm/radeon: bump the UMS driver version for r6xx/r7xx const buffer support
drm/radeon/kms: bump the version for r6xx/r7xx const buffer support
drm/radeon/r6xx/r7xx: CS parser fixes
drm/radeon/kms: fix some typos in r6xx/r7xx hpd setup
...Fix up MSI-related conflicts in drivers/gpu/drm/radeon/radeon_irq_kms.c
01 Apr, 2010
1 commit
-
I noticed that my KVM virtual machines were experiencing IDE
issues resulting in processes stuck on waiting for buffers to
complete.The root cause is of course race conditions in the ancient qemu
backend that I'm using. However, the fact that the guest isn't
recovering is a bug.I've tracked it down to the change made last year to dequeue
requests at the start rather than at the end in the IDE layer.commit 8f6205cd572fece673da0255d74843680f67f879
Author: Tejun Heo
Date: Fri May 8 11:53:59 2009 +0900ide: dequeue in-flight request
The problem is that the function ide_dma_timeout_retry does not
requeue the current request, causing one request to be lost for
each DMA timeout.This patch fixes this by requeueing the request.
Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
