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* genirq: Fix documentation of default chip disable()Mark Brown2010-01-131-1/+1
| | | | | | | | | The documentation says that by default disable() will be chip->mask but in fact default_disable() is a noop. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> LKML-Reference: <1262698198-30392-1-git-send-email-broonie@opensource.wolfsonmicro.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* lib: Introduce generic list_sort functionDave Chinner2010-01-121-0/+11
| | | | | | | | | | | | There are two copies of list_sort() in the tree already, one in the DRM code, another in ubifs. Now XFS needs this as well. Create a generic list_sort() function from the ubifs version and convert existing users to it so we don't end up with yet another copy in the tree. Signed-off-by: Dave Chinner <david@fromorbit.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Artem Bityutskiy <dedekind@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2010-01-121-0/+3
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: retry link resume if necessary ata_piix: enable 32bit PIO on SATA piix sata_promise: don't classify overruns as HSM errors
| * libata: retry link resume if necessaryTejun Heo2010-01-121-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Interestingly, when SIDPR is used in ata_piix, writes to DET in SControl sometimes get ignored leading to detection failure. Update sata_link_resume() such that it reads back SControl after clearing DET and retry if it's not clear. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: fengxiangjun <fengxiangjun@neusoft.com> Reported-by: Jim Faulkner <jfaulkne@ccs.neu.edu> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2010-01-122-0/+17
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (56 commits) sky2: Fix oops in sky2_xmit_frame() after TX timeout Documentation/3c509: document ethtool support af_packet: Don't use skb after dev_queue_xmit() vxge: use pci_dma_mapping_error to test return value netfilter: ebtables: enforce CAP_NET_ADMIN e1000e: fix and commonize code for setting the receive address registers e1000e: e1000e_enable_tx_pkt_filtering() returns wrong value e1000e: perform 10/100 adaptive IFS only on parts that support it e1000e: don't accumulate PHY statistics on PHY read failure e1000e: call pci_save_state() after pci_restore_state() netxen: update version to 4.0.72 netxen: fix set mac addr netxen: fix smatch warning netxen: fix tx ring memory leak tcp: update the netstamp_needed counter when cloning sockets TI DaVinci EMAC: Handle emac module clock correctly. dmfe/tulip: Let dmfe handle DM910x except for SPARC on-board chips ixgbe: Fix compiler warning about variable being used uninitialized netfilter: nf_ct_ftp: fix out of bounds read in update_nl_seq() mv643xx_eth: don't include cache padding in rx desc buffer size ... Fix trivial conflict in drivers/scsi/cxgb3i/cxgb3i_offload.c
| * ip: fix mc_loop checks for tunnels with multicast outer addressesOctavian Purdila2010-01-061-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we have L3 tunnels with different inner/outer families (i.e. IPV4/IPV6) which use a multicast address as the outer tunnel destination address, multicast packets will be loopbacked back to the sending socket even if IP*_MULTICAST_LOOP is set to disabled. The mc_loop flag is present in the family specific part of the socket (e.g. the IPv4 or IPv4 specific part). setsockopt sets the inner family mc_loop flag. When the packet is pushed through the L3 tunnel it will eventually be processed by the outer family which if different will check the flag in a different part of the socket then it was set. Signed-off-by: Octavian Purdila <opurdila@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * phylib: Properly reinitialize PHYs after hibernationAnton Vorontsov2009-12-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Since hibernation assumes power loss, we should fully reinitialize PHYs (including platform fixups), as if PHYs were just attached. This patch factors phy_init_hw() out of phy_attach_direct(), then converts mdio_bus to dev_pm_ops and adds an appropriate restore() callback. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'drm-linus' of ↵Linus Torvalds2010-01-111-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (45 commits) drm/nv04: Fix set_operation software method. drm/nouveau: initialise DMA tracking parameters earlier drm/nouveau: use dma.max rather than pushbuf size for checking GET validity drm/nv04: differentiate between nv04/nv05 drm/nouveau: Fix null deref in nouveau_fence_emit due to deleted fence drm/nv50: prevent a possible ctxprog hang drm/nouveau: have ttm's fault handler called directly drm/nv50: restore correct cache1 get/put address on fifoctx load drm/nouveau: create function for "dealing" with gpu lockup drm/nouveau: remove unused nouveau_channel_idle() function drm/nouveau: fix handling of fbcon colours in 8bpp drm/nv04: Context switching fixes. drm/nouveau: Use the software object for fencing. drm/nouveau: Allocate a per-channel instance of NV_SW. drm/nv50: make the blocksize depend on vram size drm/nouveau: better alignment of bo sizes and use roundup instead of ALIGN drm/nouveau: Don't skip card take down on nv0x. drm/nouveau: Implement nv42-nv43 TV load detection. drm/nouveau: Clean up the nv17-nv4x load detection code a bit. drm/nv50: fix fillrect color ...
| * \ Merge remote branch 'korg/drm-radeon-next' into drm-linusDave Airlie2010-01-111-0/+1
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * korg/drm-radeon-next: drm/radeon/kms: add additional safe regs for r4xx/rs6xx and r5xx drm/radeon/kms: Don't try to enable IRQ if we have no handler installed drm: Avoid calling vblank function is vblank wasn't initialized drm/radeon: mkregtable.c: close a file before exit drm/radeon/kms: Make sure we release AGP device if we acquired it drm/radeon/kms: Schedule host path read cache flush through the ring V2 drm/radeon/kms: Workaround RV410/R420 CP errata (V3) drm/radeon/kms: detect sideport memory on IGP chips drm/radeon: fix a couple of array index errors drm/radeon/kms: add support for eDP (embedded DisplayPort) drm: Add eDP connector type drm/radeon/kms: pull in the latest upstream ObjectID.h changes drm/radeon/kms: whitespace changes to ObjectID.h drm/radeon/kms: fix typo in atom connector type handling
| | * | drm: Add eDP connector typeAlex Deucher2010-01-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new connector type for eDP (embedded displayport) eDP is more or less the same as DP but there are some cases when you might want to handle it separately. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* | | | core, x86: make LIST_POISON less deadlyAvi Kivity2010-01-111-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The list macros use LIST_POISON1 and LIST_POISON2 as undereferencable pointers in order to trap erronous use of freed list_heads. Unfortunately userspace can arrange for those pointers to actually be dereferencable, potentially turning an oops to an expolit. To avoid this allow architectures (currently x86_64 only) to override the default values for these pointers with truly-undereferencable values. This is easy on x86_64 as the virtual address space is large and contains areas that cannot be mapped. Other 64-bit architectures will likely find similar unmapped ranges. [ingo: switch to 0xdead000000000000 as the unmapped area] [ingo: add comments, cleanup] [jaswinder: eliminate sparse warnings] Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gpio: adp5588-gpio: new driver for ADP5588 GPIO expandersMichael Hennerich2010-01-111-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | lib: add support for LZO-compressed kernelsAlbin Tonnerre2010-01-111-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series adds generic support for creating and extracting LZO-compressed kernel images, as well as support for using such images on the x86 and ARM architectures, and support for creating and using LZO-compressed initrd and initramfs images. Russell King said: : Testing on a Cortex A9 model: : - lzo decompressor is 65% of the time gzip takes to decompress a kernel : - lzo kernel is 9% larger than a gzip kernel : : which I'm happy to say confirms your figures when comparing the two. : : However, when comparing your new gzip code to the old gzip code: : - new is 99% of the size of the old code : - new takes 42% of the time to decompress than the old code : : What this means is that for a proper comparison, the results get even better: : - lzo is 7.5% larger than the old gzip'd kernel image : - lzo takes 28% of the time that the old gzip code took : : So the expense seems definitely worth the effort. The only reason I : can think of ever using gzip would be if you needed the additional : compression (eg, because you have limited flash to store the image.) : : I would argue that the default for ARM should therefore be LZO. This patch: The lzo compressor is worse than gzip at compression, but faster at extraction. Here are some figures for an ARM board I'm working on: Uncompressed size: 3.24Mo gzip 1.61Mo 0.72s lzo 1.75Mo 0.48s So for a compression ratio that is still relatively close to gzip, it's much faster to extract, at least in that case. This part contains: - Makefile routine to support lzo compression - Fixes to the existing lzo compressor so that it can be used in compressed kernels - wrapper around the existing lzo1x_decompress, as it only extracts one block at a time, while we need to extract a whole file here - config dialog for kernel compression [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: cleanup] Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com> Tested-by: Wu Zhangjin <wuzhangjin@gmail.com> Acked-by: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Tested-by: Russell King <rmk@arm.linux.org.uk> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | kmemcheck: make bitfield annotations truly no-ops when disabledVegard Nossum2010-01-111-52/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that even zero-sized struct members (int foo[0];) will affect the struct layout, causing us in particular to lose 4 bytes in struct sock. This patch fixes the regression in CONFIG_KMEMCHECK=n case. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | mm: make totalhigh_pages unsigned longAndreas Fenkart2010-01-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Makes it consistent with the extern declaration, used when CONFIG_HIGHMEM is set Removes redundant casts in printout messages Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'for_linus' of ↵Linus Torvalds2010-01-082-5/+6
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdb: Fix kernel-doc format error in kgdb.h blackfin,kgdb: Do not put PC in gdb_regs into retx. blackfin,kgdb,probe_kernel: Cleanup probe_kernel_read/write maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write)
| * | | | kgdb: Fix kernel-doc format error in kgdb.hRandy Dunlap2010-01-071-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linux-next-20081022//include/linux/kgdb.h:308): duplicate section name 'Description' and fix typos in that file's kernel-doc comments. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
| * | | | maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write)Jason Wessel2010-01-071-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some archs such as blackfin, would like to have an arch specific probe_kernel_read() and probe_kernel_write() implementation which can fall back to the generic implementation if no special operations are needed. CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2010-01-081-0/+1
|\ \ \ \ \ | |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCIe AER: prevent AER injection if hardware masks error reporting PCI/PM: Use per-device D3 delays PCI: Check the node argument passed to cpumask_of_node PCI: AER: fix aer inject result in kernel oops PCI: pcie portdrv: style cleanup
| * | | | PCI/PM: Use per-device D3 delaysRafael J. Wysocki2010-01-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that some PCI devices require extra delays when changing power state from D3 to D0 (and the other way around). Although this is against the PCI specification, we can handle it quite easily by allowing drivers to define arbitrary D3 delays for devices known to require extra time for switching power states. Introduce additional field d3_delay in struct pci_dev and use it to store the value of the device's D0->D3 delay, in miliseconds. Make the PCI PM core code use the per-device d3_delay unless pci_pm_d3_delay is greater (in which case the latter is used). [This also allows the driver to specify d3_delay shorter than the 10 ms required by the PCI standard if the device is known to be able to handle that.] Make the sky2 driver set d3_delay to 150 for devices handled by it. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14730 which is a listed regression from 2.6.30. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | | | | Merge branch 'drm-linus' of ↵Linus Torvalds2010-01-061-1/+1
|\ \ \ \ \ | | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: rs600: use correct mask for SW interrupt gpu/drm/radeon/radeon_irq.c: move a dereference below a NULL test drm/radeon/radeon_device.c: move a dereference below a NULL test drm/radeon/radeon_fence.c: move a dereference below the NULL test drm/radeon/radeon_connectors.c: add a NULL test before dereference drm/radeon/kms: fix memory leak drm/kms: Fix &&/|| confusion in drm_fb_helper_connector_parse_command_line() drm/edid: Fix CVT width/height decode drm/edid: Skip empty CVT codepoints drm: remove address mask param for drm_pci_alloc() drm/radeon/kms: add missing breaks in i2c and ss lookups drm/radeon/kms: add primary dac adj values table drm/radeon/kms: fallback to default connector table
| * | | | drm: remove address mask param for drm_pci_alloc()Zhenyu Wang2010-01-071-1/+1
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drm_pci_alloc() has input of address mask for setting pci dma mask on the device, which should be properly setup by drm driver. And leave it as a param for drm_pci_alloc() would cause confusion or mistake would corrupt the correct dma mask setting, as seen on intel hw which set wrong dma mask for hw status page. So remove it from drm_pci_alloc() function. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* | | | Merge branch 'drm-intel-next' of ↵Linus Torvalds2010-01-061-0/+54
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (23 commits) drm/i915: remove full registers dump debug drm/i915: Add DP dpll limit on ironlake and use existing DPLL search function drm/i915: Select the correct BPC for LVDS on Ironlake drm/i915: Make the BPC in FDI rx/transcoder be consistent with that in pipeconf on Ironlake drm/i915: Enable/disable the dithering for LVDS based on VBT setting drm/i915: Permit pinning whilst the device is 'suspended' drm/i915: Hold struct mutex whilst pinning power context bo. drm/i915: fix unused var drm/i915: Storage class should be before const qualifier drm/i915: remove render reclock support drm/i915: Fix RC6 suspend/resume drm/i915: execbuf2 support drm/i915: Reload hangcheck timer too for Ironlake drm/i915: only enable hotplug for detected outputs drm/i915: Track whether cursor needs physical address in intel_device_info drm/i915: Implement IS_* macros using static tables drm/i915: Move PCI IDs into i915 driver drm/i915: Update LVDS connector status when receiving ACPI LID event drm/i915: Add MALATA PC-81005 to ACPI LID quirk list drm/i915: implement new pm ops for i915 ...
| * | | | drm/i915: execbuf2 supportJesse Barnes2010-01-061-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new execbuf ioctl, execbuf2, for use by clients that want to control fence register allocation more finely. The buffer passed in to the new ioctl includes a new relocation type to indicate whether a given object needs a fence register assigned for the command buffer in question. Compatibility with the existing execbuf ioctl is implemented in terms of the new code, preserving the assumption that fence registers are required for pre-965 rendering commands. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: Remove pre-emptive clear_fence_reg()] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Kristian Høgsberg <krh@bitplanet.net> [anholt: Removed dmesg spam] Signed-off-by: Eric Anholt <eric@anholt.net>
* | | | | NOMMU: Avoiding duplicate icache flushes of shared mapsMike Frysinger2010-01-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When working with FDPIC, there are many shared mappings of read-only code regions between applications (the C library, applet packages like busybox, etc.), but the current do_mmap_pgoff() function will issue an icache flush whenever a VMA is added to an MM instead of only doing it when the map is initially created. The flush can instead be done when a region is first mmapped PROT_EXEC. Note that we may not rely on the first mapping of a region being executable - it's possible for it to be PROT_READ only, so we have to remember whether we've flushed the region or not, and then flush the entire region when a bit of it is made executable. However, this also affects the brk area. That will no longer be executable. We can mprotect() it to PROT_EXEC on MPU-mode kernels, but for NOMMU mode kernels, when it increases the brk allocation, making sys_brk() flush the extra from the icache should suffice. The brk area probably isn't used by NOMMU programs since the brk area can only use up the leavings from the stack allocation, where the stack allocation is larger than requested. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | resource: add helpers for fetching rlimitsJiri Slaby2010-01-041-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to be sure that compiler fetches the limit variable only once, so add helpers for fetching current and maximal resource limits which do that. Add them to sched.h (instead of resource.h) due to circular dependency sched.h->resource.h->task_struct Alternative would be to create a separate res_access.h or similar. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: James Morris <jmorris@namei.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu>
* | | | | resource: move kernel function inside __KERNEL__Jiri Slaby2010-01-041-2/+6
| |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is an internal function. Move it inside __KERNEL__ ifdef, along with task_struct declaration. Then we get: --- /usr/include/linux/resource.h 2009-09-14 15:09:29.000000000 +0200 +++ usr/include/linux/resource.h 2010-01-04 11:30:54.000000000 +0100 @@ -3,8 +3,6 @@ #include <linux/time.h> -struct task_struct; - /* * Resource control/accounting header file for linux */ @@ -70,6 +68,5 @@ */ #include <asm/resource.h> -int getrusage(struct task_struct *p, int who, struct rusage *ru); #endif *********** include/linux/Kbuild is untouched, since unifdef is run even on headers-y nowadays. Signed-off-by: Jiri Slaby <jslaby@suse.cz>
* | | | Merge branch 'reiserfs/kill-bkl' of ↵Linus Torvalds2010-01-021-0/+26
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing * 'reiserfs/kill-bkl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing: reiserfs: Safely acquire i_mutex from xattr_rmdir reiserfs: Safely acquire i_mutex from reiserfs_for_each_xattr reiserfs: Fix journal mutex <-> inode mutex lock inversion reiserfs: Fix unwanted recursive reiserfs lock in reiserfs_unlink() reiserfs: Relax lock before open xattr dir in reiserfs_xattr_set_handle() reiserfs: Relax reiserfs lock while freeing the journal reiserfs: Fix reiserfs lock <-> i_mutex dependency inversion on xattr reiserfs: Warn on lock relax if taken recursively reiserfs: Fix reiserfs lock <-> i_xattr_sem dependency inversion reiserfs: Fix remaining in-reclaim-fs <-> reclaim-fs-on locking inversion reiserfs: Fix reiserfs lock <-> inode mutex dependency inversion reiserfs: Fix reiserfs lock and journal lock inversion dependency reiserfs: Fix possible recursive lock
| * | | | reiserfs: Warn on lock relax if taken recursivelyFrederic Weisbecker2010-01-021-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we relax the reiserfs lock to avoid creating unwanted dependencies against others locks while grabbing these, we want to ensure it has not been taken recursively, otherwise the lock won't be really relaxed. Only its depth will be decreased. The unwanted dependency would then actually happen. To prevent from that, add a reiserfs_lock_check_recursive() call in the places that need it. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Alexander Beregalov <a.beregalov@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Ingo Molnar <mingo@elte.hu>
| * | | | reiserfs: Fix reiserfs lock <-> i_xattr_sem dependency inversionFrederic Weisbecker2010-01-021-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | i_xattr_sem depends on the reiserfs lock. But after we grab i_xattr_sem, we may relax/relock the reiserfs lock while waiting on a freezed filesystem, creating a dependency inversion between the two locks. In order to avoid the i_xattr_sem -> reiserfs lock dependency, let's create a reiserfs_down_read_safe() that acts like reiserfs_mutex_lock_safe(): relax the reiserfs lock while grabbing another lock to avoid undesired dependencies induced by the heivyweight reiserfs lock. This fixes the following warning: [ 990.005931] ======================================================= [ 990.012373] [ INFO: possible circular locking dependency detected ] [ 990.013233] 2.6.33-rc1 #1 [ 990.013233] ------------------------------------------------------- [ 990.013233] dbench/1891 is trying to acquire lock: [ 990.013233] (&REISERFS_SB(s)->lock){+.+.+.}, at: [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50 [ 990.013233] [ 990.013233] but task is already holding lock: [ 990.013233] (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}, at: [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470 [ 990.013233] [ 990.013233] which lock already depends on the new lock. [ 990.013233] [ 990.013233] [ 990.013233] the existing dependency chain (in reverse order) is: [ 990.013233] [ 990.013233] -> #1 (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}: [ 990.013233] [<ffffffff81063afc>] __lock_acquire+0xf9c/0x1560 [ 990.013233] [<ffffffff8106414f>] lock_acquire+0x8f/0xb0 [ 990.013233] [<ffffffff814ac194>] down_write+0x44/0x80 [ 990.013233] [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470 [ 990.013233] [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150 [ 990.013233] [<ffffffff8115a6aa>] user_set+0x8a/0x90 [ 990.013233] [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0 [ 990.013233] [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0 [ 990.013233] [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0 [ 990.013233] [<ffffffff810e2780>] setxattr+0xc0/0x150 [ 990.013233] [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0 [ 990.013233] [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b [ 990.013233] [ 990.013233] -> #0 (&REISERFS_SB(s)->lock){+.+.+.}: [ 990.013233] [<ffffffff81063e30>] __lock_acquire+0x12d0/0x1560 [ 990.013233] [<ffffffff8106414f>] lock_acquire+0x8f/0xb0 [ 990.013233] [<ffffffff814aba77>] __mutex_lock_common+0x47/0x3b0 [ 990.013233] [<ffffffff814abebe>] mutex_lock_nested+0x3e/0x50 [ 990.013233] [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50 [ 990.013233] [<ffffffff811340e5>] reiserfs_prepare_write+0x45/0x180 [ 990.013233] [<ffffffff81158bb6>] reiserfs_xattr_set_handle+0x2a6/0x470 [ 990.013233] [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150 [ 990.013233] [<ffffffff8115a6aa>] user_set+0x8a/0x90 [ 990.013233] [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0 [ 990.013233] [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0 [ 990.013233] [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0 [ 990.013233] [<ffffffff810e2780>] setxattr+0xc0/0x150 [ 990.013233] [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0 [ 990.013233] [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b [ 990.013233] [ 990.013233] other info that might help us debug this: [ 990.013233] [ 990.013233] 2 locks held by dbench/1891: [ 990.013233] #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [<ffffffff810e2678>] vfs_setxattr+0x78/0xc0 [ 990.013233] #1: (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}, at: [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470 [ 990.013233] [ 990.013233] stack backtrace: [ 990.013233] Pid: 1891, comm: dbench Not tainted 2.6.33-rc1 #1 [ 990.013233] Call Trace: [ 990.013233] [<ffffffff81061639>] print_circular_bug+0xe9/0xf0 [ 990.013233] [<ffffffff81063e30>] __lock_acquire+0x12d0/0x1560 [ 990.013233] [<ffffffff8115899a>] ? reiserfs_xattr_set_handle+0x8a/0x470 [ 990.013233] [<ffffffff8106414f>] lock_acquire+0x8f/0xb0 [ 990.013233] [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50 [ 990.013233] [<ffffffff8115899a>] ? reiserfs_xattr_set_handle+0x8a/0x470 [ 990.013233] [<ffffffff814aba77>] __mutex_lock_common+0x47/0x3b0 [ 990.013233] [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50 [ 990.013233] [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50 [ 990.013233] [<ffffffff81062592>] ? mark_held_locks+0x72/0xa0 [ 990.013233] [<ffffffff814ab81d>] ? __mutex_unlock_slowpath+0xbd/0x140 [ 990.013233] [<ffffffff810628ad>] ? trace_hardirqs_on_caller+0x14d/0x1a0 [ 990.013233] [<ffffffff814abebe>] mutex_lock_nested+0x3e/0x50 [ 990.013233] [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50 [ 990.013233] [<ffffffff811340e5>] reiserfs_prepare_write+0x45/0x180 [ 990.013233] [<ffffffff81158bb6>] reiserfs_xattr_set_handle+0x2a6/0x470 [ 990.013233] [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150 [ 990.013233] [<ffffffff814abcb4>] ? __mutex_lock_common+0x284/0x3b0 [ 990.013233] [<ffffffff8115a6aa>] user_set+0x8a/0x90 [ 990.013233] [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0 [ 990.013233] [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0 [ 990.013233] [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0 [ 990.013233] [<ffffffff810e2780>] setxattr+0xc0/0x150 [ 990.013233] [<ffffffff81056018>] ? sched_clock_cpu+0xb8/0x100 [ 990.013233] [<ffffffff8105eded>] ? trace_hardirqs_off+0xd/0x10 [ 990.013233] [<ffffffff810560a3>] ? cpu_clock+0x43/0x50 [ 990.013233] [<ffffffff810c6820>] ? fget+0xb0/0x110 [ 990.013233] [<ffffffff810c6770>] ? fget+0x0/0x110 [ 990.013233] [<ffffffff81002ddc>] ? sysret_check+0x27/0x62 [ 990.013233] [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0 [ 990.013233] [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b Reported-and-tested-by: Christian Kujau <lists@nerdbynature.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Alexander Beregalov <a.beregalov@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Ingo Molnar <mingo@elte.hu>
| * | | | reiserfs: Fix reiserfs lock <-> inode mutex dependency inversionFrederic Weisbecker2009-12-161-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The reiserfs lock -> inode mutex dependency gets inverted when we relax the lock while walking to the tree. To fix this, use a specialized version of reiserfs_mutex_lock_safe that takes care of mutex subclasses. Then we can grab the inode mutex with I_MUTEX_XATTR subclass without any reiserfs lock dependency. This fixes the following report: [ INFO: possible circular locking dependency detected ] 2.6.32-06793-gf405425-dirty #2 ------------------------------------------------------- mv/18566 is trying to acquire lock: (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c1110708>] reiserfs_write_lock+0x28= /0x40 but task is already holding lock: (&sb->s_type->i_mutex_key#5/3){+.+.+.}, at: [<c111033c>] reiserfs_for_each_xattr+0x10c/0x380 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sb->s_type->i_mutex_key#5/3){+.+.+.}: [<c104f723>] validate_chain+0xa23/0xf70 [<c1050155>] __lock_acquire+0x4e5/0xa70 [<c105075a>] lock_acquire+0x7a/0xa0 [<c134c76f>] mutex_lock_nested+0x5f/0x2b0 [<c11102b4>] reiserfs_for_each_xattr+0x84/0x380 [<c1110615>] reiserfs_delete_xattrs+0x15/0x50 [<c10ef57f>] reiserfs_delete_inode+0x8f/0x140 [<c10a565c>] generic_delete_inode+0x9c/0x150 [<c10a574d>] generic_drop_inode+0x3d/0x60 [<c10a4667>] iput+0x47/0x50 [<c109cc0b>] do_unlinkat+0xdb/0x160 [<c109cca0>] sys_unlink+0x10/0x20 [<c1002c50>] sysenter_do_call+0x12/0x36 -> #0 (&REISERFS_SB(s)->lock){+.+.+.}: [<c104fc68>] validate_chain+0xf68/0xf70 [<c1050155>] __lock_acquire+0x4e5/0xa70 [<c105075a>] lock_acquire+0x7a/0xa0 [<c134c76f>] mutex_lock_nested+0x5f/0x2b0 [<c1110708>] reiserfs_write_lock+0x28/0x40 [<c1103d6b>] search_by_key+0x1f7b/0x21b0 [<c10e73ef>] search_by_entry_key+0x1f/0x3b0 [<c10e77f7>] reiserfs_find_entry+0x77/0x400 [<c10e81e5>] reiserfs_lookup+0x85/0x130 [<c109a144>] __lookup_hash+0xb4/0x110 [<c109b763>] lookup_one_len+0xb3/0x100 [<c1110350>] reiserfs_for_each_xattr+0x120/0x380 [<c1110615>] reiserfs_delete_xattrs+0x15/0x50 [<c10ef57f>] reiserfs_delete_inode+0x8f/0x140 [<c10a565c>] generic_delete_inode+0x9c/0x150 [<c10a574d>] generic_drop_inode+0x3d/0x60 [<c10a4667>] iput+0x47/0x50 [<c10a1c4f>] dentry_iput+0x6f/0xf0 [<c10a1d74>] d_kill+0x24/0x50 [<c10a396b>] dput+0x5b/0x120 [<c109ca89>] sys_renameat+0x1b9/0x230 [<c109cb28>] sys_rename+0x28/0x30 [<c1002c50>] sysenter_do_call+0x12/0x36 other info that might help us debug this: 2 locks held by mv/18566: #0: (&sb->s_type->i_mutex_key#5/1){+.+.+.}, at: [<c109b6ac>] lock_rename+0xcc/0xd0 #1: (&sb->s_type->i_mutex_key#5/3){+.+.+.}, at: [<c111033c>] reiserfs_for_each_xattr+0x10c/0x380 stack backtrace: Pid: 18566, comm: mv Tainted: G C 2.6.32-06793-gf405425-dirty #2 Call Trace: [<c134b252>] ? printk+0x18/0x1e [<c104e790>] print_circular_bug+0xc0/0xd0 [<c104fc68>] validate_chain+0xf68/0xf70 [<c104c8cb>] ? trace_hardirqs_off+0xb/0x10 [<c1050155>] __lock_acquire+0x4e5/0xa70 [<c105075a>] lock_acquire+0x7a/0xa0 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c134c76f>] mutex_lock_nested+0x5f/0x2b0 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c134b60a>] ? schedule+0x27a/0x440 [<c1110708>] reiserfs_write_lock+0x28/0x40 [<c1103d6b>] search_by_key+0x1f7b/0x21b0 [<c1050176>] ? __lock_acquire+0x506/0xa70 [<c1051267>] ? lock_release_non_nested+0x1e7/0x340 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c104e354>] ? trace_hardirqs_on_caller+0x124/0x170 [<c104e3ab>] ? trace_hardirqs_on+0xb/0x10 [<c1042a55>] ? T.316+0x15/0x1a0 [<c1042d2d>] ? sched_clock_cpu+0x9d/0x100 [<c10e73ef>] search_by_entry_key+0x1f/0x3b0 [<c134bf2a>] ? __mutex_unlock_slowpath+0x9a/0x120 [<c104e354>] ? trace_hardirqs_on_caller+0x124/0x170 [<c10e77f7>] reiserfs_find_entry+0x77/0x400 [<c10e81e5>] reiserfs_lookup+0x85/0x130 [<c1042d2d>] ? sched_clock_cpu+0x9d/0x100 [<c109a144>] __lookup_hash+0xb4/0x110 [<c109b763>] lookup_one_len+0xb3/0x100 [<c1110350>] reiserfs_for_each_xattr+0x120/0x380 [<c110ffe0>] ? delete_one_xattr+0x0/0x1c0 [<c1003342>] ? math_error+0x22/0x150 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c1110615>] reiserfs_delete_xattrs+0x15/0x50 [<c1110708>] ? reiserfs_write_lock+0x28/0x40 [<c10ef57f>] reiserfs_delete_inode+0x8f/0x140 [<c10a561f>] ? generic_delete_inode+0x5f/0x150 [<c10ef4f0>] ? reiserfs_delete_inode+0x0/0x140 [<c10a565c>] generic_delete_inode+0x9c/0x150 [<c10a574d>] generic_drop_inode+0x3d/0x60 [<c10a4667>] iput+0x47/0x50 [<c10a1c4f>] dentry_iput+0x6f/0xf0 [<c10a1d74>] d_kill+0x24/0x50 [<c10a396b>] dput+0x5b/0x120 [<c109ca89>] sys_renameat+0x1b9/0x230 [<c1042d2d>] ? sched_clock_cpu+0x9d/0x100 [<c104c8cb>] ? trace_hardirqs_off+0xb/0x10 [<c1042dde>] ? cpu_clock+0x4e/0x60 [<c1350825>] ? do_page_fault+0x155/0x370 [<c1041816>] ? up_read+0x16/0x30 [<c1350825>] ? do_page_fault+0x155/0x370 [<c109cb28>] sys_rename+0x28/0x30 [<c1002c50>] sysenter_do_call+0x12/0x36 Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de>
| * | | | Merge commit 'v2.6.32' into reiserfs/kill-bklFrederic Weisbecker2009-12-07571-6410/+19302
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge-reason: The tree was based 2.6.31. It's better to be up to date with 2.6.32. Although no conflicting changes were made in between, it gives benchmarking results closer to the lastest kernel behaviour.
* | \ \ \ \ Merge branch 'for-linus' of ↵Linus Torvalds2009-12-312-2/+5
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire, ieee1394: update Kconfig help firewire, ieee1394: update MAINTAINERS entries firewire: ohci: always use packet-per-buffer mode for isochronous reception firewire: cdev: fix another memory leak in an error path firewire: fix use of multiple AV/C devices, allow multiple FCP listeners Comments from Stefan: Distributors who still ship the old stack (ieee1394, ohci1394, raw1394, sbp2, eth1394 and more) should now switch to the new one (firewire-core, firewire-ohci, firewire-sbp2, firewire-net). In the first iteration, those distributors might want to ship the old stack also (but blacklisted) as a fallback for their users if unforeseen problems with the newer replacement drivers are encountered. The older FireWire stack contains several known problems which are not going to be fixed; instead, those issues are addressed by the new stack. An incomplete list of these issues is kept in bugzilla: http://bugzilla.kernel.org/show_bug.cgi?id=10046 We have a guide on migration from the older to the newer stack: http://ieee1394.wiki.kernel.org/index.php/Juju_Migration
| * | | | | | firewire: fix use of multiple AV/C devices, allow multiple FCP listenersClemens Ladisch2009-12-292-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Control of more than one AV/C device at once --- e.g. camcorders, tape decks, audio devices, TV tuners --- failed or worked only unreliably, depending on driver implementation. This affected kernelspace and userspace drivers alike and was caused by firewire-core's inability to accept multiple registrations of FCP listeners. The fix allows multiple address handlers to be registered for the FCP command and response registers. When a request for these registers is received, all handlers are invoked, and the Firewire response is generated by the core and not by any handler. The cdev API does not change, i.e., userspace is still expected to send a response for FCP requests; this response is silently ignored. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (changelog, rebased, whitespace)
* | | | | | | Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2009-12-312-4/+5
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/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: tracing: Fix sign fields in ftrace_define_fields_##call() tracing/syscalls: Fix typo in SYSCALL_DEFINE0 tracing/kprobe: Show sign of fields in trace_kprobe format files ksym_tracer: Remove trace_stat ksym_tracer: Fix race when incrementing count ksym_tracer: Fix to allow writing newline to ksym_trace_filter ksym_tracer: Fix to make the tracer work tracing: Kconfig spelling fixes and cleanups tracing: Fix setting tracer specific options Documentation: Update ftrace-design.txt Documentation: Update tracepoint-analysis.txt Documentation: Update mmiotrace.txt
| * | | | | | | tracing: Fix sign fields in ftrace_define_fields_##call()Lai Jiangshan2009-12-301-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add is_signed_type() call to trace_define_field() in ftrace macros. The code previously just passed in 0 (false), disregarding whether or not the field was actually a signed type. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <4B273D3A.6020007@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | | | tracing/syscalls: Fix typo in SYSCALL_DEFINE0Lai Jiangshan2009-12-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The struct syscall_metadata variable name in SYSCALL_DEFINE0 should be __syscall_meta__##sname instead of __syscall_meta_##sname to match the name that is in SYSCALL_DEFINE1/2/3/4/5/6. This error causes event_enter_##sname->data to point to the wrong location, which causes syscalls which are defined by SYSCALL_DEFINE0() not to be traced. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <4B273D2E.1010807@cn.fujitsu.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | | | | | | Merge branch 'release' of ↵Linus Torvalds2009-12-301-0/+1
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI: introduce kernel parameter acpi_sleep=sci_force_enable ACPI: WMI: Survive BIOS with duplicate GUIDs dell-wmi - fix condition to abort driver loading wmi: check find_guid() return value to prevent oops dell-wmi, hp-wmi, msi-wmi: check wmi_get_event_data() return value ACPI: hp-wmi, msi-wmi: clarify that wmi_install_notify_handler() returns an acpi_status dell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should ACPI video: correct error-handling code ACPI video: no warning message if "acpi_backlight=vendor" is used ACPI: fix ACPI=n allmodconfig build thinkpad-acpi: improve Kconfig help text thinkpad-acpi: update volume subdriver documentation thinkpad-acpi: make volume subdriver optional thinkpad-acpi: don't fail to load the entire module due to ALSA problems thinkpad-acpi: don't take the first ALSA slot by default
| * | | | | | | | ACPI: introduce kernel parameter acpi_sleep=sci_force_enableZhang Rui2009-12-301-0/+1
| | |/ / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce kernel parameter acpi_sleep=sci_force_enable some laptop requires SCI_EN being set directly on resume, or else they hung somewhere in the resume code path. We already have a blacklist for these laptops but we still need this option, especially when debugging some suspend/resume problems, in case there are systems that need this workaround and are not yet in the blacklist. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | | | | Merge branch 'for_linus' of ↵Linus Torvalds2009-12-302-0/+2
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Patch up how we claim metadata blocks for quota purposes ext4: Ensure zeroout blocks have no dirty metadata ext4: return correct wbc.nr_to_write in ext4_da_writepages ext4: Update documentation to correct the inode_readahead_blks option name jbd2: don't use __GFP_NOFAIL in journal_init_common() ext4: flush delalloc blocks when space is low fs-writeback: Add helper function to start writeback if idle ext4: Eliminate potential double free on error path ext4: fix unsigned long long printk warning in super.c ext4, jbd2: Add barriers for file systems with exernal journals ext4: replace BUG() with return -EIO in ext4_ext_get_blocks ext4: add module aliases for ext2 and ext3 ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured ext4: remove unused #include <linux/version.h>
| * | | | | | | | fs-writeback: Add helper function to start writeback if idleEric Sandeen2009-12-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ext4, at least, would like to start pushing on writeback if it starts to get close to ENOSPC when reserving worst-case blocks for delalloc writes. Writing out delalloc data will convert those worst-case predictions into usually smaller actual usage, freeing up space before we hit ENOSPC based on this speculation. Thanks to Jens for the suggestion for the helper function, & the naming help. I've made the helper return status on whether writeback was started even though I don't plan to use it in the ext4 patch; it seems like it would be potentially useful to test this in some cases. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Jan Kara <jack@suse.cz>
| * | | | | | | | ext4, jbd2: Add barriers for file systems with exernal journalsTheodore Ts'o2009-12-231-0/+1
| |/ / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a bit complicated because we are trying to optimize when we send barriers to the fs data disk. We could just throw in an extra barrier to the data disk whenever we send a barrier to the journal disk, but that's not always strictly necessary. We only need to send a barrier during a commit when there are data blocks which are must be written out due to an inode written in ordered mode, or if fsync() depends on the commit to force data blocks to disk. Finally, before we drop transactions from the beginning of the journal during a checkpoint operation, we need to guarantee that any blocks that were flushed out to the data disk are firmly on the rust platter before we drop the transaction from the journal. Thanks to Oleg Drokin for pointing out this flaw in ext3/ext4. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-12-301-0/+3
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI/cardbus: Add a fixup hook and fix powerpc PCI: change PCI nomenclature in drivers/pci/ (non-comment changes) PCI: change PCI nomenclature in drivers/pci/ (comment changes) PCI: fix section mismatch on update_res() PCI: add Intel 82599 Virtual Function specific reset method PCI: add Intel USB specific reset method PCI: support device-specific reset methods PCI: Handle case when no pci device can provide cache line size hint PCI/PM: Propagate wake-up enable for PCIe devices too vgaarbiter: fix a typo in the vgaarbiter Documentation
| * | | | | | | | PCI/cardbus: Add a fixup hook and fix powerpcBenjamin Herrenschmidt2009-12-161-0/+3
| | |_|_|_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cardbus code creates PCI devices without ever going through the necessary fixup bits and pieces that normal PCI devices go through. There's in fact a commented out call to pcibios_fixup_bus() in there, it's commented because ... it doesn't work. I could make pcibios_fixup_bus() do the right thing on powerpc easily but I felt it cleaner instead to provide a specific hook pci_fixup_cardbus for which a weak empty implementation is provided by the PCI core. This fixes cardbus on powerbooks and probably all other PowerPC platforms which was broken completely for ever on some platforms and since 2.6.31 on others such as PowerBooks when we made the DMA ops mandatory (since those are setup by the fixups). Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | | | | | | | kfifo: Fix typo in commentRolf Eike Beer2009-12-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's DECLARE_KFIFO, not DECLARED_KFIFO. Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-12-301-8/+9
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: blk_rq_err_sectors cleanup block: Honor the gfp_mask for alloc_page() in blkdev_issue_discard() block: Fix incorrect alignment offset reporting and update documentation cfq-iosched: don't regard requests with long distance as close aoe: switch to the new bio_flush_dcache_pages() interface drivers/block/mg_disk.c: use resource_size() drivers/block/DAC960.c: use DAC960_V2_Controller block: Fix topology stacking for data and discard alignment drbd: remove unused #include <linux/version.h> drbd: remove duplicated #include drbd: Fix test of unsigned in _drbd_fault_random() drbd: Constify struct file_operations cfq-iosched: Remove prio_change logic for workload selection cfq-iosched: Get rid of nr_groups cfq-iosched: Remove the check for same cfq group from allow_merge drbd: fix test of unsigned in _drbd_fault_random() block: remove Documentation/block/as-iosched.txt
| * | | | | | | | block: blk_rq_err_sectors cleanupGui Jianfeng2009-12-301-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blk_rq_err_sectors() seems useless, get rid of it. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | | | | | | block: Fix incorrect alignment offset reporting and update documentationMartin K. Petersen2009-12-291-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | queue_sector_alignment_offset returned the wrong value which caused partitions to report an incorrect alignment_offset. Since offset alignment calculation is needed several places it has been split into a separate helper function. The topology stacking function has been updated accordingly. Furthermore, comments have been added to clarify how the stacking function works. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Tested-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-12-304-3/+9
|\ \ \ \ \ \ \ \ \ | | |_|_|_|_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (74 commits) Revert "b43: Enforce DMA descriptor memory constraints" iwmc3200wifi: fix array out-of-boundary access wl1251: timeout one too soon in wl1251_boot_run_firmware() mac80211: fix propagation of failed hardware reconfigurations mac80211: fix race with suspend and dynamic_ps_disable_work ath9k: fix missed error codes in the tx status check ath9k: wake hardware during AMPDU TX actions ath9k: wake hardware for interface IBSS/AP/Mesh removal ath9k: fix suspend by waking device prior to stop cfg80211: fix error path in cfg80211_wext_siwscan wl1271_cmd.c: cleanup char => u8 iwlwifi: Storage class should be before const qualifier ath9k: Storage class should be before const qualifier cfg80211: fix race between deauth and assoc response wireless: remove remaining qual code rt2x00: Add USB ID for Linksys WUSB 600N rev 2. ath5k: fix SWI calibration interrupt storm mac80211: fix ibss join with fixed-bssid libertas: Remove carrier signaling from the scan code orinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled ...
| * | | | | | | | Merge branch 'master' of ↵David S. Miller2009-12-291-2/+0
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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