- 29 9月, 2011 6 次提交
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由 Paul E. McKenney 提交于
Update rcutorture documentation to account for boosting, new types of RCU torture testing that have been added over the past few years, and the memory-barrier testing that was added an embarrassingly long time ago. Signed-off-by: NPaul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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由 Paul E. McKenney 提交于
Take a first step towards untangling Linux kernel header files by placing the struct rcu_head definition into include/linux/types.h and including include/linux/types.h in include/linux/rcupdate.h where struct rcu_head used to be defined. The actual inclusion point for include/linux/types.h is with the rest of the #include directives rather than at the point where struct rcu_head used to be defined, as suggested by Mathieu Desnoyers. Once this is in place, then header files that need only rcu_head can include types.h rather than rcupdate.h. Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
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由 Paul E. McKenney 提交于
Long ago, using TREE_RCU with PREEMPT would result in "scheduling while atomic" diagnostics if you blocked in an RCU read-side critical section. However, PREEMPT now implies TREE_PREEMPT_RCU, which defeats this diagnostic. This commit therefore adds a replacement diagnostic based on PROVE_RCU. Because rcu_lockdep_assert() and lockdep_rcu_dereference() are now being used for things that have nothing to do with rcu_dereference(), rename lockdep_rcu_dereference() to lockdep_rcu_suspicious() and add a third argument that is a string indicating what is suspicious. This third argument is passed in from a new third argument to rcu_lockdep_assert(). Update all calls to rcu_lockdep_assert() to add an informative third argument. Also, add a pair of rcu_lockdep_assert() calls from within rcu_note_context_switch(), one complaining if a context switch occurs in an RCU-bh read-side critical section and another complaining if a context switch occurs in an RCU-sched read-side critical section. These are present only if the PROVE_RCU kernel parameter is enabled. Finally, fix some checkpatch whitespace complaints in lockdep.c. Again, you must enable PROVE_RCU to see these new diagnostics. But you are enabling PROVE_RCU to check out new RCU uses in any case, aren't you? Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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由 Paul E. McKenney 提交于
Call out the RCU_TRACE information that is provided only in kernels built with RCU_BOOST. Signed-off-by: NPaul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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由 Shaohua Li 提交于
There are a number of cases where the RCU can find additional work for the per-CPU kthread within the context of that per-CPU kthread. In such cases, the per-CPU kthread is already running, so attempting to wake itself up does nothing except waste CPU cycles. This commit therefore checks to see if it is in the per-CPU kthread context, omitting the wakeup in this case. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NPaul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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由 Eric Dumazet 提交于
Commit a26ac245 (move TREE_RCU from softirq to kthread) added per-CPU kthreads. However, kthread creation uses kthread_create(), which can put the kthread's stack and task struct on the wrong NUMA node. Therefore, use kthread_create_on_node() instead of kthread_create() so that the stacks and task structs are placed on the correct NUMA node. A similar change was carried out in commit 94dcf29a (kthread: use kthread_create_on_node()). Also change rcutorture's priority-boost-test kthread creation. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> CC: Tejun Heo <tj@kernel.org> CC: Rusty Russell <rusty@rustcorp.com.au> CC: Andrew Morton <akpm@linux-foundation.org> CC: Andi Kleen <ak@linux.intel.com> CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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- 28 9月, 2011 4 次提交
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由 Linus Torvalds 提交于
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git://github.com/tiwai/sound由 Linus Torvalds 提交于
* 'for-linus' of git://github.com/tiwai/sound: ASoC: ssm2602: Re-enable oscillator after suspend ALSA: usb-audio: Check for possible chip NULL pointer before clearing probing flag ALSA: hda/realtek - Don't detect LO jack when identical with HP ALSA: hda/realtek - Avoid bogus HP-pin assignment ALSA: HDA: No power nids on 92HD93 ASoC: omap-mcbsp: Do not attempt to change DAI sysclk if stream is active
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git://github.com/rjwysocki/linux-pm由 Linus Torvalds 提交于
* 'pm-fixes' of git://github.com/rjwysocki/linux-pm: PM / Clocks: Do not acquire a mutex under a spinlock
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由 Takashi Iwai 提交于
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- 27 9月, 2011 11 次提交
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由 Linus Torvalds 提交于
That flag no longer makes sense, since we don't look up automount points as eagerly any more. Additionally, it turns out that the NO_AUTOMOUNT handling was buggy to begin with: it would avoid automounting even for cases where we really *needed* to do the automount handling, and could return ENOENT for autofs entries that hadn't been instantiated yet. With our new non-eager automount semantics, one discussion has been about adding a AT_AUTOMOUNT flag to vfs_fstatat (and thus the newfstatat() and fstatat64() system calls), but it's probably not worth it: you can always force at least directory automounting by simply adding the final '/' to the filename, which works for *all* of the stat family system calls, old and new. So AT_NO_AUTOMOUNT (and thus LOOKUP_NO_AUTOMOUNT) really were just a result of our bad default behavior. Acked-by: NIan Kent <raven@themaw.net> Acked-by: NTrond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Lars-Peter Clausen 提交于
Currently the the internal oscillator is powered down when entering BIAS_OFF state, but not re-enabled when going back to BIAS_STANDBY. As a result the CODEC will stop working after suspend if the internal oscillator is used to generate the sysclock signal. This patch fixes it by clearing the appropriate bit in the power down register when the CODEC is re-enabled. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
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由 Trond Myklebust 提交于
The concensus seems to be that system calls such as stat() etc should not trigger an automount. Neither should the l* versions. This patch therefore adds a LOOKUP_AUTOMOUNT flag to tag those lookups that _should_ trigger an automount on the last path element. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com> [ Edited to leave out the cases that are already covered by LOOKUP_OPEN, LOOKUP_DIRECTORY and LOOKUP_CREATE - all of which also fundamentally force automounting for their own reasons - Linus ] Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
Since we've now turned around and made LOOKUP_FOLLOW *not* force an automount, we want to add the ability to force an automount event on lookup even if we don't happen to have one of the other flags that force it implicitly (LOOKUP_OPEN, LOOKUP_DIRECTORY, LOOKUP_PARENT..) Most cases will never want to use this, since you'd normally want to delay automounting as long as possible, which usually implies LOOKUP_OPEN (when we open a file or directory, we really cannot avoid the automount any more). But Trond argued sufficiently forcefully that at a minimum bind mounting a file and quotactl will want to force the automount lookup. Some other cases (like nfs_follow_remote_path()) could use it too, although LOOKUP_DIRECTORY would work there as well. This commit just adds the flag and logic, no users yet, though. It also doesn't actually touch the LOOKUP_NO_AUTOMOUNT flag that is related, and was made irrelevant by the same change that made us not follow on LOOKUP_FOLLOW. Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Ian Kent <raven@themaw.net> Cc: Jeff Layton <jlayton@redhat.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Greg KH <gregkh@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://github.com/kgene/linux-samsung由 Linus Torvalds 提交于
* 'samsung-fixes-3' of git://github.com/kgene/linux-samsung: ARM: EXYNOS4: Rename sclk_cam clocks for FIMC driver ARM: S5PV210: Rename sclk_cam clocks for FIMC media driver ARM: S5P: fix incorrect loop iterator usage on gpio-interrupt ARM: S3C2443: Fix bit-reset in setrate of clk_armdiv
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由 Sylwester Nawrocki 提交于
The sclk_cam clocks are now controlled by the top level FIMC media device driver bound to "s5p-fimc-md" platform device. Rename sclk_cam clocks so they accessible by the corresponding driver. Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Sylwester Nawrocki 提交于
The sclk_cam clocks are now controlled by the top level FIMC media device driver bound to "s5p-fimc-md" platform device. Rename sclk_cam clocks so they accessible by the corresponding driver. Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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git://github.com/groeck/linux由 Linus Torvalds 提交于
* 'hwmon-for-linus' of git://github.com/groeck/linux: hwmon: (coretemp) remove struct platform_data * parameter from create_core_data() hwmon: (coretemp) constify static data hwmon: (coretemp) don't use kernel assigned CPU number as platform device ID hwmon: (ds620) Fix handling of negative temperatures hwmon: (w83791d) rename prototype parameter from 'register' to 'reg' hwmon: (coretemp) Don't use threshold registers for tempX_max hwmon: (coretemp) Let the user force TjMax hwmon: (coretemp) Drop duplicate function get_pkg_tjmax
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git://github.com/avikivity/kvm由 Linus Torvalds 提交于
* 'kvm-updates/3.1' of git://github.com/avikivity/kvm: KVM: x86 emulator: fix Src2CL decode KVM: MMU: fix incorrect return of spte
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http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm由 Linus Torvalds 提交于
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op ARM: dma-mapping: free allocated page if unable to map ARM: fix vmlinux.lds.S discarding sections ARM: nommu: fix warning with checksyscalls.sh ARM: 7091/1: errata: D-cache line maintenance operation by MVA may not succeed
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由 Rafael J. Wysocki 提交于
Commit b7ab83ed (PM: Use spinlock instead of mutex in clock management functions) introduced a regression causing clocks_mutex to be acquired under a spinlock. This happens because pm_clk_suspend() and pm_clk_resume() call pm_clk_acquire() under pcd->lock, but pm_clk_acquire() executes clk_get() which causes clocks_mutex to be acquired. Similarly, __pm_clk_remove(), executed under pcd->lock, calls clk_put(), which also causes clocks_mutex to be acquired. To fix those problems make pm_clk_add() call pm_clk_acquire(), so that pm_clk_suspend() and pm_clk_resume() don't have to do that. Change pm_clk_remove() and pm_clk_destroy() to separate modifications of the pcd->clock_list list from the actual removal of PM clock entry objects done by __pm_clk_remove(). Reported-and-tested-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 26 9月, 2011 10 次提交
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由 Thomas Pfaff 提交于
Before clearing the probing flag in the error exit path, check that the chip pointer is not NULL. Signed-off-by: NThomas Pfaff <tpfaff@gmx.net> Cc: <stable@kernel.org> [2.6.39+] Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Takashi Iwai 提交于
The spec->autocfg.line_out_pins[] may contain the same pins as hp_pins[] depending on the configuration. When they are identical, detecting the line_jack_present flag screws up the auto-mute because alc_line_automute() is called unconditionally at initialization while it won't be triggered by unsol events, thus the old line_jack_present flag is kept for the whole run. For fixing this buggy behavior, the driver needs to check whether the line-outs are really individual, and skip if same as headphone jacks. Reference: https://bugzilla.novell.com/show_bug.cgi?id=716104Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Will Deacon 提交于
The SMP implementation of __futex_atomic_op clobbers oldval with the status flag from the exclusive store. This causes it to always read as zero when performing the FUTEX_OP_CMP_* operation. This patch updates the ARM __futex_atomic_op implementations to take a tmp argument, allowing us to store the strex status flag without overwriting the register containing oldval. Cc: stable@kernel.org Reported-by: NMinho Ban <mhban@samsung.com> Reviewed-by: NNicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Takashi Iwai 提交于
When the headphone pin is assigned as primary output to line_out_pins[], the automatic HP-pin assignment by ASSID must be suppressed. Otherwise a wrong pin might be assigned to the headphone and breaks the auto-mute. Reference: https://bugzilla.novell.com/show_bug.cgi?id=716104Signed-off-by: NTakashi Iwai <tiwai@suse.de> Cc: <stable@kernel.org>
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由 Russell King 提交于
If the attempt to map a page for DMA fails (eg, because we're out of mapping space) then we must not hold on to the page we allocated for DMA - doing so will result in a memory leak. Cc: <stable@kernel.org> Reported-by: NBryan Phillippe <bp@darkforest.org> Tested-by: NBryan Phillippe <bp@darkforest.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Marek Szyprowski 提交于
Loop iterator value after terminating list_for_each_entry() is not NULL. This patch fixes incorrect iterator usage in GPIO interrupt code for SAMSUNG S5P platforms. Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Heiko Stuebner 提交于
The changed statement should set the old armdiv bits to 0 and not everything else, before setting the new value. Signed-off-by: NHeiko Stuebner <heiko@sntech.de> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Oleg Nesterov 提交于
If PTRACE_LISTEN fails after lock_task_sighand() it doesn't drop ->siglock. Reported-by: NMatt Fleming <matt.fleming@intel.com> Signed-off-by: NOleg Nesterov <oleg@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Avi Kivity 提交于
Src2CL decode (used for double width shifts) erronously decodes only bit 3 of %rcx, instead of bits 7:0. Fix by decoding %cl in its entirety. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Zhao Jin 提交于
__update_clear_spte_slow should return original spte while the current code returns low half of original spte combined with high half of new spte. Signed-off-by: NZhao Jin <cronozhj@gmail.com> Reviewed-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 24 9月, 2011 9 次提交
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由 David Henningsson 提交于
This patch is necessary to make internal speakers work on this chip. Cc: stable@kernel.org BugLink: http://bugs.launchpad.net/bugs/854468Tested-by: NAlex Wolfson <alex.wolfson@canonical.com> Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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git://git.secretlab.ca/git/linux-2.6由 Linus Torvalds 提交于
* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6: spi: Fix WARN when removing spi-fsl-spi module spi/imx: Fix spi-imx when the hardware SPI chipselects are used
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由 Jeff Harris 提交于
If CPM mode is not used, the fsl_dummy_rx variable is never allocated. When the cleanup attempts to free it, the reference count is zero and a WARN is generated. The same CPM mode check used in the initialize is applied to the free as well. Tested on 2.6.33 with the previous spi_mpc8xxx driver. The renamed spi-fsl-spi driver looks to have the same problem. Signed-off-by: NJeff Harris <jeff_harris@kentrox.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Randy Dunlap 提交于
sector_t can be different types, so cast it to its largest possible type. drivers/scsi/qla2xxx/qla_isr.c:1509:5: warning: format '%lx' expects type 'long unsigned int', but argument 5 has type 'sector_t' Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
SCSI_ISCI needs to select SCSI_SAS_HOST_SMP to ensure that all needed symbols are available to it. Fixes this build error: ERROR: "try_test_sas_gpio_gp_bit" [drivers/scsi/isci/isci.ko] undefined! Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://github.com/acmel/linux由 Linus Torvalds 提交于
* 'perf-tools-for-linus' of git://github.com/acmel/linux: perf python: Add missing perf_event__parse_sample 'swapped' parm
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git://github.com/acmel/linux由 Linus Torvalds 提交于
* 'perf-tools-for-linus' of git://github.com/acmel/linux: perf tools: Add support for disabling -Werror via WERROR=0 perf top: Fix userspace sample addr map offset perf symbols: Fix issue with binaries using 16-bytes buildids (v2) perf tool: Fix endianness handling of u32 data in samples perf sort: Fix symbol sort output by separating unresolved samples by type perf symbols: Synthesize anonymous mmap events perf record: Create events initially disabled and enable after init perf symbols: Add some heuristics for choosing the best duplicate symbol perf symbols: Preserve symbol scope when parsing /proc/kallsyms perf symbols: /proc/kallsyms does not sort module symbols perf symbols: Fix ppc64 SEGV in dso__load_sym with debuginfo files perf probe: Fix regression of variable finder
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git://people.freedesktop.org/~airlied/linux由 Linus Torvalds 提交于
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms: fix DDIA enable on some rs690 systems Revert "drm/radeon/kms: fix typo in r100_blit_copy"
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git://github.com/tiwai/sound由 Linus Torvalds 提交于
* 'for-linus' of git://github.com/tiwai/sound: ALSA: usb-audio - clear chip->probing on error exit ALSA: fm801: Gracefully handle failure of tuner auto-detect ALSA: fm801: Fix double free in case of error in tuner detection ASoC: Ensure we generate a driver name ASoC: Remove bitrotted wm8962_resume() ASoC: bf5xx-ad73311: Fix prototype for bf5xx_probe
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