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2013-09-02dma: imx-dma: Remove redundant NULL checkSachin Kamat
kfree on a NULL pointer is a no-op. Null pointer check is not necessary. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02dma: dmagengine: fix function names in commentsDaniel Mack
Trivial fix for function name mismatches I stumbled over. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02dma: add driver for R-Car HPB-DMACMax Filippov
Add support for HPB-DMAC found in Renesas R-Car SoCs, using 'shdma-base' DMA driver framework. Based on the original patch by Phil Edworthy <phil.edworthy@renesas.com>. Signed-off-by: Max Filippov <max.filippov@cogentembedded.com> [Sergei: removed useless #include, sorted #include's, fixed HPB_DMA_TCR_MAX, fixed formats and removed line breaks in the dev_dbg() calls, rephrased and added IRQ # to the shdma_request_irq() failure message, added MODULE_AUTHOR(), removed '__init'/'__exit' annotations from the probe()/remove() methods, removed '__initdata' annotation from 'hpb_dmae_driver', fixed guard macro name in the header file, fixed #define ASYNCRSTR_ASRST20, added #define ASYNCRSTR_ASRST24, added the necessary runtime PM calls to the probe() and remove() methods, handled errors returned by dma_async_device_register(), beautified comments and #define's.] Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02dma: k3dma: use devm_ioremap_resource() instead of devm_request_and_ioremap()Jingoo Han
Use devm_ioremap_resource() because devm_request_and_ioremap() is obsoleted by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02HID: battery: don't do DMA from stackJiri Kosina
Instead of using data from stack for DMA in hidinput_get_battery_property(), allocate the buffer dynamically. Cc: stable@kernel.org Reported-by: Richard Ryniker <ryniker@alum.mit.edu> Reported-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-02HID: roccat: add support for KonePureOptical v2Stefan Achatz
KonePureOptical is a KonePure with different sensor. Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-02HID: picolcd: Prevent NULL pointer dereference on _remove()Bruno Prémont
When picolcd is switched into bootloader mode (for FW flashing) make sure not to try to dereference NULL-pointers of feature-devices during unplug/unbind. This fixes following BUG: BUG: unable to handle kernel NULL pointer dereference at 00000298 IP: [<f811f56b>] picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd] *pde = 00000000 Oops: 0000 [#1] Modules linked in: hid_picolcd syscopyarea sysfillrect sysimgblt fb_sys_fops CPU: 0 PID: 15 Comm: khubd Not tainted 3.11.0-rc7-00002-g50d62d4 #2 EIP: 0060:[<f811f56b>] EFLAGS: 00010292 CPU: 0 EIP is at picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd] Call Trace: [<f811d1ab>] picolcd_remove+0xcb/0x120 [hid_picolcd] [<c1469b09>] hid_device_remove+0x59/0xc0 [<c13464ca>] __device_release_driver+0x5a/0xb0 [<c134653f>] device_release_driver+0x1f/0x30 [<c134603d>] bus_remove_device+0x9d/0xd0 [<c13439a5>] device_del+0xd5/0x150 [<c14696a4>] hid_destroy_device+0x24/0x60 [<c1474cbb>] usbhid_disconnect+0x1b/0x40 ... Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: stable@kernel.org Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-02HID: usbhid: quirk for N-Trig DuoSense Touch ScreenVasily Titskiy
The DuoSense touchscreen device causes a 10 second timeout. This fix removes the delay. Signed-off-by: Vasily Titskiy <qehgt0@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-02HID: uhid: add devname module aliasMarcel Holtmann
For simple device node creation, add the devname module alias. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-02ACPI / LPSS: don't crash if a device has no MMIO resourcesMika Westerberg
Intel LPSS devices that are enumerated from ACPI have both MMIO and IRQ resources returned in their _CRS method. However, Apple Macbook Air with Haswell has LPSS devices enumerated from PCI bus instead and _CRS method returns only an interrupt number (but the device has _HID set that causes the scan handler to match it). The current ACPI / LPSS code sets pdata->dev_desc only when MMIO resource is found for the device and in case of Macbook Air it is never found. That leads to a NULL pointer dereference in register_device_clock(). Correct this by always setting the pdata->dev_desc. Reported-and-tested-by: Imre Kaloz <kaloz@openwrt.org> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: 3.10+ <stable@vger.kernel.org> # 3.10+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-02hwrng: via - Add MODULE_DEVICE_TABLEBen Hutchings
via-rng currently isn't auto-loaded if built as a module. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: fcrypt - Fix bitoperation for compilation with clangJan-Simon Möller
v2: Fix bug in statement as pointed out by Herbert Xu. Kudos to pipacs. Author: PaX Team <pageexec at freemail.hu> ML-Post: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html URL: http://llvm.linuxfoundation.org Merge: Jan-Simon Möller <dl9pf at gmx.de> Description: Fix for warning: linux/crypto/fcrypt.c:143:47: warning: signed shift result (0x598000000) requires 36 bits to represent, but 'int' only has 32 bits [-Wshift-overflow] Z(0xef), Z(0x70), Z(0xcf), Z(0xc2), Z(0x2a), Z(0xb3), Z(0x61), Z(0xad), ^~~~~~~ linux/crypto/fcrypt.c:113:29: note: expanded from macro 'Z' ^ ~~ linux/include/uapi/linux/byteorder/little_endian.h:38:53: note: expanded from macro '__cpu_to_be32' ^ linux/include/uapi/linux/swab.h:116:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ linux/include/uapi/linux/swab.h:18:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ ^ Solution - make sure we don't exceed the 32 bit range. #define Z(x) cpu_to_be32(((x & 0x1f) << 27) | (x >> 5)) Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> CC: pageexec@freemail.hu CC: llvmlinux@lists.linuxfoundation.org CC: behanw@converseincode.com CC: herbert@gondor.apana.org.au CC: davem@davemloft.net CC: linux-crypto@vger.kernel.org CC: linux-kernel@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix SHA-2 for chunks bigger than block sizeMarcelo Cerri
Each call to the co-processor, with exception of the last call, needs to send data that is multiple of block size. As consequence, any remaining data is kept in the internal NX context. This patch fixes a bug in the driver that causes it to save incorrect data into the context when data is bigger than the block size. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix GCM for zero length messagesMarcelo Cerri
The NX CGM implementation doesn't support zero length messages and the current implementation has two flaws: - When the input data length is zero, it ignores the associated data. - Even when both lengths are zero, it uses the Crypto API to encrypt a zeroed block using ctr(aes) and because of this it allocates a new transformation and sets the key for this new tfm. Both operations are intended to be used only in user context, while the cryptographic operations can be called in both user and softirq contexts. This patch replaces the nested Crypto API use and adds two special cases: - When input data and associated data lengths are zero: it uses NX ECB mode to emulate the encryption of a zeroed block using ctr(aes). - When input data is zero and associated data is available: it uses NX GMAC mode to calculate the associated data MAC. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix XCBC for zero length messagesMarcelo Cerri
The NX XCBC implementation doesn't support zero length messages and because of that NX is currently returning a hard-coded hash for zero length messages. However this approach is incorrect since the hash value also depends on which key is used. This patch removes the hard-coded hash and replace it with an implementation based on the RFC 3566 using ECB. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-CCMFionnuala Gunter
This patch updates the NX driver to perform several hyper calls when necessary so that the length limits of scatter/gather lists are respected. Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-XCBCFionnuala Gunter
This patch updates the NX driver to perform several hyper calls when necessary so that the length limits of scatter/gather lists are respected. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-GCMMarcelo Cerri
This patch updates the nx-aes-gcm implementation to perform several hyper calls if needed in order to always respect the length limits for scatter/gather lists. Two different limits are considered: - "ibm,max-sg-len": maximum number of bytes of each scatter/gather list. - "ibm,max-sync-cop": - The total number of bytes that a scatter/gather list can hold. - The maximum number of elements that a scatter/gather list can have. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-CTRMarcelo Cerri
This patch updates the nx-aes-ctr implementation to perform several hyper calls if needed in order to always respect the length limits for scatter/gather lists. Two different limits are considered: - "ibm,max-sg-len": maximum number of bytes of each scatter/gather list. - "ibm,max-sync-cop": - The total number of bytes that a scatter/gather list can hold. - The maximum number of elements that a scatter/gather list can have. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-CBCMarcelo Cerri
This patch updates the nx-aes-cbc implementation to perform several hyper calls if needed in order to always respect the length limits for scatter/gather lists. Two different limits are considered: - "ibm,max-sg-len": maximum number of bytes of each scatter/gather list. - "ibm,max-sync-cop": - The total number of bytes that a scatter/gather list can hold. - The maximum number of elements that a scatter/gather list can have. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - fix limits to sg lists for AES-ECBMarcelo Cerri
This patch updates the nx-aes-ecb implementation to perform several hyper calls if needed in order to always respect the length limits for scatter/gather lists. Two different limits are considered: - "ibm,max-sg-len": maximum number of bytes of each scatter/gather list. - "ibm,max-sync-cop": - The total number of bytes that a scatter/gather list can hold. - The maximum number of elements that a scatter/gather list can have. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02crypto: nx - add offset to nx_build_sg_lists()Marcelo Cerri
This patch includes one more parameter to nx_build_sg_lists() to skip the given number of bytes from beginning of each sg list. This is needed in order to implement the fixes for the AES modes to make them able to process larger chunks of data. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02Merge tag 'mfd-lee-3.12-2' of git://git.linaro.org/people/ljones/mfdSamuel Ortiz
mfd-lee-3.12-2 These are the final patches due for the v3.12 merge window. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02mfd: ucb1x00-core: Rewrite ucb1x00_add_dev()Lee Jones
Error handling is on-its-head in this function. After invoking a function we should examine the return code and return the error value if there was one. Instead, this function checks for success and goes onto provide functionality if success was received. Not so bad in a simple function like this, but in a more complex one this could end up drowning in curly brackets. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for ↵Lee Jones
event name The AB8500 debugfs driver allocates memory to contain the name of a new sysfs entry, but fails to apply the proper post-allocation checks. If the device were to run out of memory, the allocation would return NULL. Without the correct checks the driver will continue to populate address NULL with the specified device name which would obviously cause a pointer dereference Oops. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for sysfsLee Jones
The AB8500 debugfs driver allocates memory for a new sysfs entry, but fails to apply the proper post-allocation checks. If the device were to run out of memory, the allocation would return NULL. Without the correct checks the driver will continue to populate NULL->[show|store|...], which would obviously cause a pointer dereference Oops. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: timberdale: Use module_pci_driverSachin Kamat
module_pci_driver removes some boilerplate and makes the code simple. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: timberdale: Remove redundant breakSachin Kamat
break after goto is unreachable. Delete it. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: timberdale: Staticize local variablesSachin Kamat
Local variables referenced only in this file are made static. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: ab8500-debugfs: Staticize local variablesSachin Kamat
Local variables referenced only in this file are made static. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: db8500-prcmu: Staticize clk_mgtSachin Kamat
clk_mgt is used only in this file. Make it static. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: db8500-prcmu: Use ANSI function declarationSachin Kamat
Silences the following warning: drivers/mfd/db8500-prcmu.c:2322:25: warning: non-ANSI function declaration of function 'prcmu_ac_sleep_req' Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: omap-usb-host: Staticize usbhs_driver_nameSachin Kamat
usbhs_driver_name is used only in this file. Make it static. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-09-02mfd: 88pm805: Fix potential NULL pdata dereferenceChao Xie
User pass platform data to device, and platform data may be NULL. Add the check for pdata. Signed-off-by: Chao Xie <chao.xie@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02mfd: 88pm800: Fix potential NULL pdata dereferenceChao Xie
User pass platform data to device, and platform data may be NULL. Add the check for pdata. Signed-off-by: Chao Xie <chao.xie@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02Merge branch 'topic/for-asoc'Samuel Ortiz
2013-09-02mfd: twl6040: Use regmap for register cacheMark Brown
Rather then open coding a cache of the vibra control registers use the regmap cache code. Also cache the interrupt mask register, providing a small performance improvement for the interrupt code. Signed-off-by: Mark Brown <broonie@linaro.org> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02mfd: davinci_voicecodec: Provide a regmap for register I/OMark Brown
This will be used to support refactoring of the ASoC CODEC driver to use a regmap. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02mfd: davinci_voicecodec: Remove unused read and write functionsMark Brown
These functions are not referenced anywhere, nor prototyped, so just remove them. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-09-02perf: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node()Joe Perches
Use the convenience function instead of __GFP_ZERO. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/f58599ae1a8d7b32d37e9cf283e95fba6452f7f6.1377809875.git.joe@perches.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02perf: Export struct perf_branch_entry to userspaceVince Weaver
If PERF_SAMPLE_BRANCH_STACK is enabled then samples are returned with the format { u64 from, to, flags } but the flags layout is not specified. This field has the type struct perf_branch_entry; move this definition into include/uapi/linux/perf_event.h so users can access these fields. This is similar to the existing inclusion of perf_mem_data_src in the include/uapi/linux/perf_event.h file. Signed-off-by: Vince Weaver <vincent.weaver@maine.edu> Acked-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1308231544420.1889@vincent-weaver-1.um.maine.edu Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02perf: Add attr->mmap2 attribute to an eventStephane Eranian
Adds a new PERF_RECORD_MMAP2 record type which is essence an expanded version of PERF_RECORD_MMAP. Used to request mmap records with more information about the mapping, including device major, minor and the inode number and generation for mappings associated with files or shared memory segments. Works for code and data (with attr->mmap_data set). Existing PERF_RECORD_MMAP record is unmodified by this patch. Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/1377079825-19057-2-git-send-email-eranian@google.com [ Added Al to the Cc:. Are the ino, maj/min exports of vma->vm_file OK? ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02perf/x86: Add Silvermont (22nm Atom) supportYan, Zheng
Compared to old atom, Silvermont has offcore and has more events that support PEBS. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1374138144-17278-2-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02perf/x86: use INTEL_UEVENT_EXTRA_REG to define MSR_OFFCORE_RSP_XYan, Zheng
Silvermont (22nm Atom) has two offcore response configuration MSRs, unlike other Intel CPU, its event code for MSR_OFFCORE_RSP_1 is 0x02b7. To avoid complicating intel_fixup_er(), use INTEL_UEVENT_EXTRA_REG to define MSR_OFFCORE_RSP_X. So intel_fixup_er() can find the event code for OFFCORE_RSP_N by x86_pmu.extra_regs[N].event. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1374138144-17278-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02dma: imx-sdma: Staticize sdma_driver_data structuresFabio Estevam
Sparse report the following warnings: drivers/dma/imx-sdma.c:330:25: warning: symbol 'sdma_imx31' was not declared. Should it be static? drivers/dma/imx-sdma.c:351:25: warning: symbol 'sdma_imx25' was not declared. Should it be static? drivers/dma/imx-sdma.c:357:25: warning: symbol 'sdma_imx35' was not declared. Should it be static? drivers/dma/imx-sdma.c:375:25: warning: symbol 'sdma_imx51' was not declared. Should it be static? drivers/dma/imx-sdma.c:395:25: warning: symbol 'sdma_imx53' was not declared. Should it be static? drivers/dma/imx-sdma.c:414:25: warning: symbol 'sdma_imx6q' was not declared. Should it be static? Make the sdma_driver_data structures static. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02pch_dma: Add MODULE_DEVICE_TABLEBen Hutchings
pch_dma currently isn't auto-loaded if built as a module. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02sched/fair: Fix the sd_parent_degenerate() codePeter Zijlstra
I found that on my WSM box I had a redundant domain: [ 0.949769] CPU0 attaching sched-domain: [ 0.953765] domain 0: span 0,12 level SIBLING [ 0.958335] groups: 0 (cpu_power = 587) 12 (cpu_power = 588) [ 0.964548] domain 1: span 0-5,12-17 level MC [ 0.969206] groups: 0,12 (cpu_power = 1175) 1,13 (cpu_power = 1176) 2,14 (cpu_power = 1176) 3,15 (cpu_power = 1176) 4,16 (cpu_power = 1176) 5,17 (cpu_power = 1176) [ 0.984993] domain 2: span 0-5,12-17 level CPU [ 0.989822] groups: 0-5,12-17 (cpu_power = 7055) [ 0.995049] domain 3: span 0-23 level NUMA [ 0.999620] groups: 0-5,12-17 (cpu_power = 7055) 6-11,18-23 (cpu_power = 7056) Note how domain 2 has only a single group and spans the same CPUs as domain 1. We should not keep such domains and do in fact have code to prune these. It turns out that the 'new' SD_PREFER_SIBLING flag causes this, it makes sd_parent_degenerate() fail on the CPU domain. We can easily fix this by 'ignoring' the SD_PREFER_SIBLING bit and transfering it to whatever domain ends up covering the span. With this patch the domains now look like this: [ 0.950419] CPU0 attaching sched-domain: [ 0.954454] domain 0: span 0,12 level SIBLING [ 0.959039] groups: 0 (cpu_power = 587) 12 (cpu_power = 588) [ 0.965271] domain 1: span 0-5,12-17 level MC [ 0.969936] groups: 0,12 (cpu_power = 1175) 1,13 (cpu_power = 1176) 2,14 (cpu_power = 1176) 3,15 (cpu_power = 1176) 4,16 (cpu_power = 1176) 5,17 (cpu_power = 1176) [ 0.985737] domain 2: span 0-23 level NUMA [ 0.990231] groups: 0-5,12-17 (cpu_power = 7055) 6-11,18-23 (cpu_power = 7056) Reviewed-by: Paul Turner <pjt@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-ys201g4jwukj0h8xcamakxq1@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02sched/fair: Rework and comment the group_imb codePeter Zijlstra
Rik reported some weirdness due to the group_imb code. As a start to looking at it, clean it up a little and add a few explanatory comments. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-caeeqttnla4wrrmhp5uf89gp@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02sched/fair: Optimize find_busiest_queue()Peter Zijlstra
Use for_each_cpu_and() and thereby avoid computing the capacity for CPUs we know we're not interested in. Reviewed-by: Paul Turner <pjt@google.com> Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-lppceyv6kb3a19g8spmrn20b@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-02sched/fair: Make group power more consistentPeter Zijlstra
For easier access, less dereferences and more consistent value, store the group power in update_sg_lb_stats() and use it thereafter. The actual value in sched_group::sched_group_power::power can change throughout the load-balance pass if we're unlucky. Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-739xxqkyvftrhnh9ncudutc7@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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