aboutsummaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAge
* i2c: Fix stuck transaction on cpm-i2c driverMichael Trimarchi2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a process tries to read/write a disconnected i2c device, it receives a signal (e.g. ctrl-c) and the kernel gets stuck. BUG: soft lockup - CPU#0 stuck for 61s! [I2CEEpromTest:392] NIP: c01628f8 LR: c01628f0 CTR: c00177cc REGS: c39abd70 TRAP: 0901 Not tainted (2.6.25.7-alcore) MSR: 00009032 <EE,ME,IR,DR> CR: 42042048 XER: 20000000 TASK = c3889bd0[392] 'I2CEEpromTest' THREAD: c39aa000 GPR00: 00009000 c39abe20 c3889bd0 c39075c8 c39abe28 00000001 00000000 00000001 GPR08: c3889bd0 c39075c8 00009032 c39abe34 00002437 NIP [c01628f8] cpm_i2c_xfer+0x5fc/0x6d0 LR [c01628f0] cpm_i2c_xfer+0x5f4/0x6d0 Call Trace: [c39abe20] [c0162924] cpm_i2c_xfer+0x628/0x6d0 (unreliable) [c39abe90] [c015f6a0] i2c_transfer+0x88/0xb4 [c39abeb0] [c0160164] i2c_master_recv+0x48/0x6c [c39abed0] [c01618dc] i2cdev_read+0x50/0xe4 [c39abef0] [c0068b24] vfs_read+0xc4/0x108 [c39abf10] [c0068f4c] sys_read+0x4c/0x90 [c39abf40] [c000d348] ret_from_syscall+0x0/0x38 Instruction dump: 3bc00064 92610010 3bf201c8 92810014 3b61 This happen because though the wait_event_interruptible_timeout takes the signals into account, the driver does not handle them. We propose to change the wait_event_interruptible_timeout with wait_event_timeout, leaving the signals to be handled in other points on the upper layers. Signed-off-by: Bruno Morelli <bruno@evidence.eu.com> Signed-off-by: Michael Trimarchi <michael@evidence.eu.com> Acked-by: Jochen Friedrich <jochen@scram.de> [ben-linux@fluff.org: fix title for patch] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* i2c-omap: Fix build breaking typo cpu_is_omap_2430Tony Lindgren2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | Hi Ben, Can you please queue this fix? Thanks, Tony >From ffe2b2cdf6283770b70a197e3748c6b40a1006be Mon Sep 17 00:00:00 2001 From: Tony Lindgren <tony@atomide.com> Date: Wed, 17 Jun 2009 13:14:23 +0300 Subject: [PATCH] i2c-omap: Fix build breaking typo in cpu_is_omap_2430 Commit 84bf2c86 introduced a typo, it should be cpu_is_omap2430 instead. The typo was probably caused by a mismerge. Without this patch all omaps fail to build with: error: implicit declaration of function 'cpu_is_omap_2430' Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-06-21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: sdhci: remove needless double parenthesis sdhci: Specific quirk vor VIA SDHCI controller in VX855ES s3cmci: fix dma configuration call mmc: Add new via-sdmmc host controller driver sdhci: Add support for hosts that are only capable of 1-bit transfers MAINTAINERS: add myself as atmel-mci maintainer (sd/mmc interface) sdhci: Add SDHCI_QUIRK_NO_MULTIBLOCK quirk sdhci: Add better ADMA error reporting sdhci-s3c: Samsung S3C based SDHCI controller glue
| * sdhci: remove needless double parenthesisPierre Ossman2009-06-21
| | | | | | | | Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * sdhci: Specific quirk vor VIA SDHCI controller in VX855ESHarald Welte2009-06-21
| | | | | | | | | | | | | | | | | | | | The SDHCI controller found in the VX855ES requires 10ms delay between applying power and applying clock. This issue has been discovered and documented by the OLPC XO1.5 team. Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * s3cmci: fix dma configuration callBen Dooks2009-06-21
| | | | | | | | | | | | | | | | This was missed in the DMA changes during the s3c24xx updates in commit 8970ef47d56fd3db28ee798b9d400caf08abd924. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * mmc: Add new via-sdmmc host controller driverHarald Welte2009-06-21
| | | | | | | | | | | | | | | | | | This adds the via-sdmmc driver for the SD/MMC-controller of VIA, which is found in a number of recent integrated VIA chipset products. Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * sdhci: Add support for hosts that are only capable of 1-bit transfersAnton Vorontsov2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some hosts (hardware configurations, or particular SD/MMC slots) may not support 4-bit bus. For example, on MPC8569E-MDS boards we can switch between serial (1-bit only) and nibble (4-bit) modes, thought we have to disable more peripherals to work in 4-bit mode. Along with some small core changes, this patch modifies sdhci-of driver, so that now it looks for "sdhci,1-bit-only" property in the device-tree, and if specified we enable a proper quirk. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * MAINTAINERS: add myself as atmel-mci maintainer (sd/mmc interface)Nicolas Ferre2009-06-21
| | | | | | | | | | | | | | | | | | | | Add MAINTAINERS entry for atmel-mci driver. This driver was maintained by its author: Haavard Skinnemoen. I take the maintainance of it. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * sdhci: Add SDHCI_QUIRK_NO_MULTIBLOCK quirkBen Dooks2009-06-21
| | | | | | | | | | | | | | | | | | | | Add quirk to show the controller cannot do multi-block IO. This is mainly for the Samsung SDHCI controller that currently cannot manage to do multi-block PIO without timing out. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * sdhci: Add better ADMA error reportingBen Dooks2009-06-21
| | | | | | | | | | | | | | | | | | Update the ADMA error reporting to not only show the overall controller state but also to print the ADMA descriptor list. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * sdhci-s3c: Samsung S3C based SDHCI controller glueBen Dooks2009-06-21
| | | | | | | | | | | | | | | | | | | | Add support for the 'HSMMC' block(s) in the Samsung SoC line. These are compatible with the SDHCI driver so add the necessary setup and driver binding for the platform devices. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2009-06-21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu template crypto: aes-ni - Do not sleep when using the FPU crypto: aes-ni - Fix cbc mode IV saving crypto: padlock-aes - work around Nano CPU errata in CBC mode crypto: padlock-aes - work around Nano CPU errata in ECB mode
| * | crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu templateHuang Ying2009-06-18
| | | | | | | | | | | | | | | | | | | | | | | | kernel_fpu_begin/end used preempt_disable/enable, so sleep should be prevented between kernel_fpu_begin/end. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | crypto: aes-ni - Do not sleep when using the FPUHuang Ying2009-06-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because AES-NI instructions will touch XMM state, corresponding code must be enclosed within kernel_fpu_begin/end, which used preempt_disable/enable. So sleep should be prevented between kernel_fpu_begin/end. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | crypto: aes-ni - Fix cbc mode IV savingHuang Ying2009-06-18
| | | | | | | | | | | | | | | | | | | | | | | | Original implementation of aesni_cbc_dec do not save IV if input length % 4 == 0. This will make decryption of next block failed. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | crypto: padlock-aes - work around Nano CPU errata in CBC modeChuck Ebbert2009-06-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | Extend previous workarounds for the prefetch bug to cover CBC mode, clean up the code a bit. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Acked-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | crypto: padlock-aes - work around Nano CPU errata in ECB modeChuck Ebbert2009-06-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The VIA Nano processor has a bug that makes it prefetch extra data during encryption operations, causing spurious page faults. Extend existing workarounds for ECB mode to copy the data to an temporary buffer to avoid the problem. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Acked-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | | Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds2009-06-21
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: Select frame pointers on x86 dma-debug: be more careful when building reference entries dma-debug: check for sg_call_ents in best-fit algorithm too
| * | | lockdep: Select frame pointers on x86Peter Zijlstra2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86 stack traces are a piece of crap without frame pointers, and its not like the 'performance gain' of not having stack pointers matters when you selected lockdep. Reported-by: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <new-submission> Cc: <stable@kernel.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | dma-debug: be more careful when building reference entriesJoerg Roedel2009-06-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current code is not very careful when it builds reference dma_debug_entries which get passed to hash_bucket_find(). But since this function changed to a best-fit algorithm these entries have to be more acurate. This patch adds this higher level of accuracy. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | dma-debug: check for sg_call_ents in best-fit algorithm tooJoerg Roedel2009-06-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If we don't check for sg_call_ents the hash_bucket_find function might still return the wrong dma_debug_entry for sg mappings. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-06-21
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Add model=6530g option ALSA: hda - Acer Inspire 6530G model for Realtek ALC888 ALSA: snd_usb_caiaq: fix legacy input streaming ASoC: Kill BUS_ID_SIZE ALSA: HDA - Correct trivial typos in comments. ALSA: HDA - Name-fixes in code (tagra/targa) ALSA: HDA - Add pci-quirk for MSI MS-7350 motherboard. ALSA: hda - Fix memory leak at codec creation
| * \ \ \ Merge branch 'topic/hda' into for-linusTakashi Iwai2009-06-21
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * topic/hda: ALSA: hda - Add model=6530g option ALSA: hda - Acer Inspire 6530G model for Realtek ALC888 ALSA: HDA - Correct trivial typos in comments. ALSA: HDA - Name-fixes in code (tagra/targa) ALSA: HDA - Add pci-quirk for MSI MS-7350 motherboard. ALSA: hda - Fix memory leak at codec creation
| | * | | | ALSA: hda - Add model=6530g optionTakashi Iwai2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the new model string corresponding to the previous Acer Aspire 6530G support. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | ALSA: hda - Acer Inspire 6530G model for Realtek ALC888Tony Vroon2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The selected 4930G model seemed to keep the subwoofer 'tuba' function from operating correctly. Removing the existing PCI ID match made this work again, but it was mapped to 'Side' instead of to LFE as one would expect. This attempts to enable all functionality and keep the amount of available mixer sliders low. Any slider that had no audible effect on the output audio has been removed, and as such EAPD is not currently enabled. Signed-off-by: Tony Vroon <tony@linx.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | ALSA: HDA - Correct trivial typos in comments.Sasha Alexandr2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct some trivial typos in comments. Signed-off-by: Sasha Alexandr <brina_keith@ns.sympatico.ca> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | ALSA: HDA - Name-fixes in code (tagra/targa)Sasha Alexandr2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct some cut+paste typos from 'tagra' to 'targa'. Signed-off-by: Sasha Alexandr <brina_keith@ns.sympatico.ca> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | ALSA: HDA - Add pci-quirk for MSI MS-7350 motherboard.Sasha Alexandr2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add pci-quirk for MSI MS-7350 motherboard with Realtek ALC888. Signed-off-by: Sasha Alexandr <brina_keith@ns.sympatico.ca> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | ALSA: hda - Fix memory leak at codec creationTakashi Iwai2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The codec->modelname field is allocated twice in snd_hda_codec_new(). Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | | Merge branch 'topic/caiaq' into for-linusTakashi Iwai2009-06-21
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * topic/caiaq: ALSA: snd_usb_caiaq: fix legacy input streaming
| | * | | | | ALSA: snd_usb_caiaq: fix legacy input streamingDaniel Mack2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Seems that nobody recently tried the input on the very first supported sound card model, RK2. This patch fixes the byte offset to make it running again. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | | | Merge branch 'topic/asoc' into for-linusTakashi Iwai2009-06-21
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * topic/asoc: ASoC: Kill BUS_ID_SIZE
| | * | | | | | ASoC: Kill BUS_ID_SIZETakashi Iwai2009-06-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the use of BUS_ID_SIZE from txx9aclc.c, as BUS_ID_SIZE will be removed soon later. Also, use snprintf() instead of sprintf() as a safer operation. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | | | | | | | Move FAULT_FLAG_xyz into handle_mm_fault() callersLinus Torvalds2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows the callers to now pass down the full set of FAULT_FLAG_xyz flags to handle_mm_fault(). All callers have been (mechanically) converted to the new calling convention, there's almost certainly room for architectures to clean up their code and then add FAULT_FLAG_RETRY when that support is added. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | Remove internal use of 'write_access' in mm/memory.cLinus Torvalds2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fault handling routines really want more fine-grained flags than a single "was it a write fault" boolean - the callers will want to set flags like "you can return a retry error" etc. And that's actually how the VM works internally, but right now the top-level fault handling functions in mm/memory.c all pass just the 'write_access' boolean around. This switches them over to pass around the FAULT_FLAG_xyzzy 'flags' variable instead. The 'write_access' calling convention still exists for the exported 'handle_mm_fault()' function, but that is next. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | ipc: unbreak 32-bit shmctl/semctl/msgctlJohannes Weiner2009-06-21
| |_|_|_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 31a985f "ipc: use __ARCH_WANT_IPC_PARSE_VERSION in ipc/util.h" would choose the implementation of ipc_parse_version() based on a symbol defined in <asm/unistd.h>. But it failed to also include this header and thus broke IPC_64-passing 32-bit userspace because the flag wasn't masked out properly anymore and the command not understood. Include <linux/unistd.h> to give the architecture a chance to ask for the no-no-op ipc_parse_version(). Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | mm: page_alloc: clear PG_locked before checking flags on freeJohannes Weiner2009-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | da456f1 "page allocator: do not disable interrupts in free_page_mlock()" moved the PG_mlocked clearing after the flag sanity checking which makes mlocked pages always trigger 'bad page'. Fix this by clearing the bit up front. Reported--and-debugged-by: Peter Chubb <peter.chubb@nicta.com.au> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Tested-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | x86, 64-bit: Clean up user address maskingLinus Torvalds2009-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The discussion about using "access_ok()" in get_user_pages_fast() (see commit 7f8189068726492950bf1a2dcfd9b51314560abf: "x86: don't use 'access_ok()' as a range check in get_user_pages_fast()" for details and end result), made us notice that x86-64 was really being very sloppy about virtual address checking. So be way more careful and straightforward about masking x86-64 virtual addresses: - All the VIRTUAL_MASK* variants now cover half of the address space, it's not like we can use the full mask on a signed integer, and the larger mask just invites mistakes when applying it to either half of the 48-bit address space. - /proc/kcore's kc_offset_to_vaddr() becomes a lot more obvious when it transforms a file offset into a (kernel-half) virtual address. - Unify/simplify the 32-bit and 64-bit USER_DS definition to be based on TASK_SIZE_MAX. This cleanup and more careful/obvious user virtual address checking also uncovered a buglet in the x86-64 implementation of strnlen_user(): it would do an "access_ok()" check on the whole potential area, even if the string itself was much shorter, and thus return an error even for valid strings. Our sloppy checking had hidden this. So this fixes 'strnlen_user()' to do this properly, the same way we already handled user strings in 'strncpy_from_user()'. Namely by just checking the first byte, and then relying on fault handling for the rest. That always works, since we impose a guard page that cannot be mapped at the end of the user space address space (and even if we didn't, we'd have the address space hole). Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds2009-06-20
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq, irq.h: Fix kernel-doc warnings genirq: fix comment to say IRQ_WAKE_THREAD
| * | | | | | | genirq, irq.h: Fix kernel-doc warningsRandy Dunlap2009-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix kernel-doc warnings in linux/irq.h: Warning(include/linux/irq.h:201): No description found for parameter 'node' Warning(include/linux/irq.h:201): Excess struct/union/enum/typedef member 'cpu' description in 'irq_desc' Warning(include/linux/irq.h:434): No description found for parameter 'node' Warning(include/linux/irq.h:434): Excess function parameter 'cpu' description in 'alloc_desc_masks' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> LKML-Reference: <4A3467EC.50006@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | genirq: fix comment to say IRQ_WAKE_THREADSteven Rostedt2009-05-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trying to implement a driver to use threaded irqs, I was confused when the return value to use that was described in the comment above request_threaded_irq was not defined. Turns out that the enum is IRQ_WAKE_THREAD where as the comment said IRQ_THREAD_WAKE. [Impact: do not confuse developers with wrong comments ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <alpine.DEB.2.00.0905121431020.13338@gandalf.stny.rr.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | | | | | Merge branch 'perfcounters-fixes-for-linus' of ↵Linus Torvalds2009-06-20
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits) perfcounter: Handle some IO return values perf_counter: Push perf_sample_data through the swcounter code perf_counter tools: Define and use our own u64, s64 etc. definitions perf_counter: Close race in perf_lock_task_context() perf_counter, x86: Improve interactions with fast-gup perf_counter: Simplify and fix task migration counting perf_counter tools: Add a data file header perf_counter: Update userspace callchain sampling uses perf_counter: Make callchain samples extensible perf report: Filter to parent set by default perf_counter tools: Handle lost events perf_counter: Add event overlow handling fs: Provide empty .set_page_dirty() aop for anon inodes perf_counter: tools: Makefile tweaks for 64-bit powerpc perf_counter: powerpc: Add processor back-end for MPC7450 family perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels perf_counter: powerpc: Change how processor-specific back-ends get selected perf_counter: powerpc: Use unsigned long for register and constraint values perf_counter: powerpc: Enable use of software counters on 32-bit powerpc perf_counter tools: Add and use isprint() ...
| * | | | | | | | perfcounter: Handle some IO return valuesFrederic Weisbecker2009-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Building perfcounter tools raises the following warnings: builtin-record.c: In function ‘atexit_header’: builtin-record.c:464: erreur: ignoring return value of ‘pwrite’, declared with attribute warn_unused_result builtin-record.c: In function ‘__cmd_record’: builtin-record.c:503: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result builtin-report.c: In function ‘__cmd_report’: builtin-report.c:1403: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result This patch handles these IO return values. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1245456100-5477-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter: Push perf_sample_data through the swcounter codePeter Zijlstra2009-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Push the perf_sample_data further outwards to the swcounter interface, to abstract it away some more. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter tools: Define and use our own u64, s64 etc. definitionsPaul Mackerras2009-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 64-bit powerpc, __u64 is defined to be unsigned long rather than unsigned long long. This causes compiler warnings every time we print a __u64 value with %Lx. Rather than changing __u64, we define our own u64 to be unsigned long long on all architectures, and similarly s64 as signed long long. For consistency we also define u32, s32, u16, s16, u8 and s8. These definitions are put in a new header, types.h, because these definitions are needed in util/string.h and util/symbol.h. The main change here is the mechanical change of __[us]{64,32,16,8} to remove the "__". The other changes are: * Create types.h * Include types.h in perf.h, util/string.h and util/symbol.h * Add types.h to the LIB_H definition in Makefile * Added (u64) casts in process_overflow_event() and print_sym_table() to kill two remaining warnings. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: benh@kernel.crashing.org LKML-Reference: <19003.33494.495844.956580@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter: Close race in perf_lock_task_context()Peter Zijlstra2009-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf_lock_task_context() is buggy because it can return a dead context. the RCU read lock in perf_lock_task_context() only guarantees the memory won't get freed, it doesn't guarantee the object is valid (in our case refcount > 0). Therefore we can return a locked object that can get freed the moment we release the rcu read lock. perf_pin_task_context() then increases the refcount and does an unlock on freed memory. That increased refcount will cause a double free, in case it started out with 0. Ammend this by including the get_ctx() functionality in perf_lock_task_context() (all users already did this later anyway), and return a NULL context when the found one is already dead. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter, x86: Improve interactions with fast-gupIngo Molnar2009-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve a few details in perfcounter call-chain recording that makes use of fast-GUP: - Use ACCESS_ONCE() to observe the pte value. ptes are fundamentally racy and can be changed on another CPU, so we have to be careful about how we access them. The PAE branch is already careful with read-barriers - but the non-PAE and 64-bit side needs an ACCESS_ONCE() to make sure the pte value is observed only once. - make the checks a bit stricter so that we can feed it any kind of cra^H^H^H user-space input ;-) Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter: Simplify and fix task migration countingPeter Zijlstra2009-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The task migrations counter was causing rare and hard to decypher memory corruptions under load. After a day of debugging and bisection we found that the problem was introduced with: 3f731ca: perf_counter: Fix cpu migration counter Turning them off fixes the crashes. Incidentally, the whole perf_counter_task_migration() logic can be done simpler as well, by injecting a proper sw-counter event. This cleanup also fixed the crashes. The precise failure mode is not completely clear yet, but we are clearly not unhappy about having a fix ;-) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | perf_counter tools: Add a data file headerPeter Zijlstra2009-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a data file header so we can transfer data between record and report. LKML-Reference: <new-submission> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 08:21:09 -0500