- 18 Mar, 2013 8 commits
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Namjae Jeon authored
In all the breaking conditions in get_node_path, 'n' is used to track index in offset[] array, but while breaking out also, in all paths n++ is done. So, remove the ++ from breaking paths. Also, avoid reset of 'level=0' in first case. Signed-off-by:
Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by:
Amit Sahrawat <a.sahrawat@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk.kim@samsung.com>
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Jaegeuk Kim authored
The maximum filename length supported in linux is 255 characters. So let's follow that. Signed-off-by:
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Namjae Jeon authored
Optimize and change return path in lookup_free_nid_list Signed-off-by:
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Namjae Jeon authored
We can remove the call to find_get_page to get a page from the cache and check for up-to-date, instead we can make use of grab_cache_page part itself to fetch the page from the cache. So, removing the call and moving the PageUptodate at proper place, also taken care of moving the lock_page condition in the page_hit part. Signed-off-by:
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Changman Lee authored
The caller of get_nid should be careful not to put lower value than NODE_DIR1_BLOCK in case of level is zero. Signed-off-by:
Changman Lee <cm224.lee@samsung.com> Reviewed-by:
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Jaegeuk Kim authored
Previously, f2fs reads several node pages ahead when get_dnode_of_data is called with RDONLY_NODE flag. And, this flag is set by the following functions. - get_data_block_ro - get_lock_data_page - do_write_data_page - truncate_blocks - truncate_hole However, this readahead mechanism is initially introduced for the use of get_data_block_ro to enhance the sequential read performance. So, let's clarify all the cases with the additional modes as follows. enum { ALLOC_NODE, /* allocate a new node page if needed */ LOOKUP_NODE, /* look up a node without readahead */ LOOKUP_NODE_RA, /* * look up a node with readahead called * by get_datablock_ro. */ } Signed-off-by: -
Jaegeuk Kim authored
The get_node_page_ra tries to: 1. grab or read a target node page for the given nid, 2. then, call ra_node_page to read other adjacent node pages in advance. So, when we try to read a target node page by #1, we should submit bio with READ_SYNC instead of READA. And, in #2, READA should be used. Signed-off-by:
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Jaegeuk Kim authored
If the node page was truncated, its block address became zero. This means that we don't need to write the node page, but have to unlock NODE_WRITE, decrease the number of dirty node pages, and then unlock_page before returning the f2fs_write_node_page with zero. Reviewed-by:
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- 08 Mar, 2013 1 commit
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Changman Lee authored
Use div_u64 to fix overflow when calculating utilization. *long int* is 4-bytes on 32-bit so (user blocks * 100) might be overflow if disk size is over e.g. 512GB. Signed-off-by:
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- 07 Mar, 2013 26 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Peter Anvin: "Several boot fixes (MacBook, legacy EFI bootloaders), another please-don't-brick fix, and some minor stuff." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Do not try to sync identity map for non-mapped pages x86, doc: Be explicit about what the x86 struct boot_params requires x86: Don't clear efi_info even if the sentinel hits x86, mm: Make sure to find a 2M free block for the first mapped area x86: Fix 32-bit *_cpu_data initializers efivarfs: return accurate error code in efivarfs_fill_super() efivars: efivarfs_valid_name() should handle pstore syntax efi: be more paranoid about available space when creating variables iommu, x86: Add DMA remap fault reason x86, smpboot: Remove unused variable
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Misc radeon, nouveau, mgag200 and intel fixes. The intel fixes should contain the fix for the touchpad on the Chromebook - hey I'm an input maintainer now!" Hate to pee on your parade, Dave, but I don't think being an input maintainer is necessarily something to strive for.. * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (25 commits) drm/tegra: drop "select DRM_HDMI" drm: Documentation typo fixes drm/mgag200: Bug fix: Renesas board now selects native resolution. drm/mgag200: Reject modes that are too big for VRAM drm/mgag200: 'fbdev_list' in 'struct mga_fbdev' is not used drm/radeon: don't check mipmap alignment if MIP_ADDRESS is FMASK drm/radeon: skip MC reset as it's probably not hung drm/radeon: add primary dac adj quirk for R200 board drm/radeon: don't set hpd, afmt interrupts when interrupts are disabled drm/i915: Turn off hsync and vsync on ADPA when disabling crt drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits drm/i915: also disable south interrupts when handling them drm/i915: enable irqs earlier when resuming drm/i915: Increase the RC6p threshold. DRM/i915: On G45 enable cursor plane briefly after enabling the display plane. drm/nv50-: prevent some races between modesetting and page flipping drm/nouveau/i2c: drop parent refcount when creating ports drm/nv84: fix regression in page flipping drm/nouveau: Fix typo in init_idx_addr_latched(). drm/nouveau: Disable AGP on PowerPC again. ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI and power management fixes from Rafael J Wysocki: - Two fixes for the new intel_pstate driver from Dirk Brandewie. - Fix for incorrect usage of the .find_bridge() callback from struct acpi_bus_type in the USB core and subsequent removal of that callback from Rafael J Wysocki. - ACPI processor driver cleanups from Chen Gang and Syam Sidhardhan. - ACPI initialization and error messages fix from Joe Perches. - Operating Performance Points documentation improvement from Nishanth Menon. - Fixes for memory leaks and potential concurrency issues and sysfs attributes leaks during device removal in the core device PM QoS code from Rafael J Wysocki. - Calxeda Highbank cpufreq driver simplification from Emilio López. - cpufreq comment cleanup from Namhyung Kim. - Fix for a section mismatch in Calxeda Highbank interprocessor communication code from Mark Langsdorf (this is not a PM fix strictly speaking, but the code in question went in through the PM tree). * tag 'pm+acpi-3.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq / intel_pstate: Do not load on VM that does not report max P state. cpufreq / intel_pstate: Fix intel_pstate_init() error path ACPI / glue: Drop .find_bridge() callback from struct acpi_bus_type ACPI / glue: Add .match() callback to struct acpi_bus_type ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0 ACPI / processor: Remove redundant NULL check before kfree ACPI / Sleep: Avoid interleaved message on errors PM / QoS: Remove device PM QoS sysfs attributes at the right place PM / QoS: Fix concurrency issues and memory leaks in device PM QoS cpufreq: highbank: do not initialize array with a loop PM / OPP: improve introductory documentation cpufreq: Fix a typo in comment mailbox, pl320-ipc: remove __init from probe function
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Paul Bolle authored
Commit ac24c220 ("drm/tegra: Use generic HDMI infoframe helpers") added "select DRM_HDMI" to the DRM_TEGRA Kconfig entry. But there is no Kconfig symbol named DRM_HDMI. The select statement for that symbol is a nop. Drop it. What was needed to use HDMI functionality was to select HDMI (which this entry already did through depending on DRM) and to include linux/hdmi.h (which this commit also did). Signed-off-by:
Paul Bolle <pebolle@tiscali.nl> Acked-by:
Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by:
Dave Airlie <airlied@redhat.com>
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Christopher Harvey authored
Signed-off-by:
Christopher Harvey <charvey@matrox.com> Signed-off-by:
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Julia Lemire authored
Renesas boards were consistently defaulting to the 1024x768 resolution, regardless of the native resolution of the monitor plugged in. It was determined that the EDID of the monitor was not being read. Since the DAC is a shared line, in order to read from or write to it we must take control of the DAC clock. This can be done by setting the proper register to one. This bug fix sets the register MGA1064_GEN_IO_CTL2 to one. The DAC control line can be used to determine whether or not a new monitor has been plugged in. But since the hotplug feature is not one we will support, it has been decided to simply leave the register set to one. Signed-off-by:
Julia Lemire <jlemire@matrox.com> Signed-off-by:
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Christopher Harvey authored
A monitor or a user could request a resolution greater than the available VRAM for the backing framebuffer. This change checks the required framebuffer size against the max VRAM size and rejects modes if they are too big. This change can also remove a mode request passed in via the video= parameter. Signed-off-by:
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Christopher Harvey authored
Signed-off-by:
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
Alex writes: Radeon fixes pull. Not much to it. - fix some splatter if the interrupt handler isn't registered - Add a quirk for an old R200 board to fix washed out colors on the DAC - Don't try and soft reset the MC when we reset the GPU. It usually doesn't need it and doesn't always work reliably. - A CS checker fix from Marek * 'drm-fixes-3.9' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: don't check mipmap alignment if MIP_ADDRESS is FMASK drm/radeon: skip MC reset as it's probably not hung drm/radeon: add primary dac adj quirk for R200 board drm/radeon: don't set hpd, afmt interrupts when interrupts are disabled -
git://git.linaro.org/people/rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: "Mainly a group of fixes, the only exception is the wiring up of the kcmp syscall now that those patches went in during the last merge window." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations ARM: 7667/1: perf: Fix section mismatch on armpmu_init() ARM: 7666/1: decompressor: add -mno-single-pic-base for building the decompressor ARM: 7665/1: Wire up kcmp syscall ARM: 7664/1: perf: remove erroneous semicolon from event initialisation ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit ARM: 7662/1: hw_breakpoint: reset debug logic on secondary CPUs in s2ram resume ARM: 7661/1: mm: perform explicit branch predictor maintenance when required ARM: 7660/1: tlb: add branch predictor maintenance operations ARM: 7659/1: mm: make mm->context.id an atomic64_t variable ARM: 7658/1: mm: fix race updating mm->context.id on ASID rollover ARM: 7657/1: head: fix swapper and idmap population with LPAE and big-endian ARM: 7655/1: smp_twd: make twd_local_timer_of_register() no-op for nosmp ARM: 7652/1: mm: fix missing use of 'asid' to get asid value from mm->context.id ARM: 7642/1: netx: bump IRQ offset to 64
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H. Peter Anvin authored
EFI changes for v3.9-rc2, * Make the EFI variable code more paranoid about running out of space in NVRAM, since this is the root cause of the recent issue where machines refuse to boot - from Matthew Garrett. * Some efivarfs patches that fix regressions introduced in v3.9-rc1. Signed-off-by:H. Peter Anvin <hpa@zytor.com>
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Dave Hansen authored
kernel_map_sync_memtype() is called from a variety of contexts. The pat.c code that calls it seems to ensure that it is not called for non-ram areas by checking via pat_pagerange_is_ram(). It is important that it only be called on the actual identity map because there *IS* no map to sync for highmem pages, or for memory holes. The ioremap.c uses are not as careful as those from pat.c, and call kernel_map_sync_memtype() on PCI space which is in the middle of the kernel identity map _range_, but is not actually mapped. This patch adds a check to kernel_map_sync_memtype() which probably duplicates some of the checks already in pat.c. But, it is necessary for the ioremap.c uses and shouldn't hurt other callers. I have reproduced this bug and this patch fixes it for me and the original bug reporter: https://lkml.org/lkml/2013/2/5/396Signed-off-by:
Dave Hansen <dave@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20130307163151.D9B58C4E@kernel.stglabs.ibm.comSigned-off-by:
Dave Hansen <dave@sr71.net> Tested-by:
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulatorLinus Torvalds authored
Pull regulator fixes from Mark Brown: "A few small things here and there, nothing major here really. The conversion of twl4030ldo_ops to get_voltage_sel is a fix, as covered in the commit log it fixes inconsistency in handling of the IS_UNSUP() feature in the driver." * tag 'regulator-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: fixed regulator_bulk_enable unwinding code regulator: twl: Convert twl4030ldo_ops to get_voltage_sel regulator: palmas: fix number of SMPS voltages regulator: core: fix documentation error in regulator_allow_bypass regulator: core: update kernel documentation for regulator_desc regulator: db8500-prcmu - remove incorrect __exit markup
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmapLinus Torvalds authored
Pull regmap PM fix from Mark Brown: "A simple fix to stop us leaking a runtime PM reference in the case where we fail to enable a device." * tag 'regmap-v3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: irq: call pm_runtime_put in pm_runtime_get_sync failed case
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Linus Torvalds authored
Merge tag 'ecryptfs-3.9-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs Pull ecryptfs fixes from Tyler Hicks: "Minor code cleanups and new Kconfig option to disable /dev/ecryptfs The code cleanups fix up W=1 compiler warnings and some unnecessary checks. The new Kconfig option, defaulting to N, allows the rarely used eCryptfs kernel to userspace communication channel to be compiled out. This may be the first step in it being eventually removed." Hmm. I'm not sure whether these should be called "fixes", and it probably should have gone in the merge window. But I'll let it slide. * tag 'ecryptfs-3.9-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs: eCryptfs: allow userspace messaging to be disabled eCryptfs: Fix redundant error check on ecryptfs_find_daemon_by_euid() ecryptfs: ecryptfs_msg_ctx_alloc_to_free(): remove kfree() redundant null check eCryptfs: decrypt_pki_encrypted_session_key(): remove kfree() redundant null check eCryptfs: remove unneeded checks in virt_to_scatterlist() eCryptfs: Fix -Wmissing-prototypes warnings eCryptfs: Fix -Wunused-but-set-variable warnings eCryptfs: initialize payload_len in keystore.c
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-stagingLinus Torvalds authored
Pull hwmon patches from Guenter Roeck: "Bug fixes for sht15 and ltc2978 driver plus some documentation updates" * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (sht15) Check return value of regulator_enable() hwmon: (adt7410) Document ADT7420 support hwmon: (pmbus/ltc2978) Use detected chip ID to select supported functionality hwmon: (pmbus/ltc2978) Fix peak attribute handling hwmon: (pmbus/ltc2978) Update datasheet links hwmon: Update my e-mail address in driver documentation
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Marek Olšák authored
The MIP_ADDRESS state has 2 meanings. If the texture has one sample per pixel, it's a pointer to the mipmap chain. If the texture has multiple samples per pixel, it's a pointer to FMASK, a metadata buffer needed for reading compressed MSAA textures. The mipmap alignment rules do not apply to FMASK. Signed-off-by:
Marek Olšák <maraeo@gmail.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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Alex Deucher authored
The MC is mostly likely busy (e.g., display requests), not hung so no need to reset it. Doing an MC reset is tricky and not particularly reliable. Fixes hangs in certain cases. Reported-by:
Josh Boyer <jwboyer@gmail.com> Signed-off-by:
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Alex Deucher authored
vbios values are wrong leading to colors that are too bright. Use the default values instead. Signed-off-by: -
Alex Deucher authored
Avoids splatter if the interrupt handler is not registered due to acceleration being disabled. Signed-off-by:
Jerome Glisse <jglisse@redhat.com> Cc: stable@vger.kernel.org
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Ivan Djelic authored
Recent GCC versions (e.g. GCC-4.7.2) perform optimizations based on assumptions about the implementation of memset and similar functions. The current ARM optimized memset code does not return the value of its first argument, as is usually expected from standard implementations. For instance in the following function: void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter) { memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter)); waiter->magic = waiter; INIT_LIST_HEAD(&waiter->list); } compiled as: 800554d0 <debug_mutex_lock_common>: 800554d0: e92d4008 push {r3, lr} 800554d4: e1a00001 mov r0, r1 800554d8: e3a02010 mov r2, #16 ; 0x10 800554dc: e3a01011 mov r1, #17 ; 0x11 800554e0: eb04426e bl 80165ea0 <memset> 800554e4: e1a03000 mov r3, r0 800554e8: e583000c str r0, [r3, #12] 800554ec: e5830000 str r0, [r3] 800554f0: e5830004 str r0, [r3, #4] 800554f4: e8bd8008 pop {r3, pc} GCC assumes memset returns the value of pointer 'waiter' in register r0; causing register/memory corruptions. This patch fixes the return value of the assembly version of memset. It adds a 'mov' instruction and merges an additional load+store into existing load/store instructions. For ease of review, here is a breakdown of the patch into 4 simple steps: Step 1 ====== Perform the following substitutions: ip -> r8, then r0 -> ip, and insert 'mov ip, r0' as the first statement of the function. At this point, we have a memset() implementation returning the proper result, but corrupting r8 on some paths (the ones that were using ip). Step 2 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 1: save r8: - str lr, [sp, #-4]! + stmfd sp!, {r8, lr} and restore r8 on both exit paths: - ldmeqfd sp!, {pc} @ Now <64 bytes to go. + ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go. (...) tst r2, #16 stmneia ip!, {r1, r3, r8, lr} - ldr lr, [sp], #4 + ldmfd sp!, {r8, lr} Step 3 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 0: save r8: - stmfd sp!, {r4-r7, lr} + stmfd sp!, {r4-r8, lr} and restore r8 on both exit paths: bgt 3b - ldmeqfd sp!, {r4-r7, pc} + ldmeqfd sp!, {r4-r8, pc} (...) tst r2, #16 stmneia ip!, {r4-r7} - ldmfd sp!, {r4-r7, lr} + ldmfd sp!, {r4-r8, lr} Step 4 ====== Rewrite register list "r4-r7, r8" as "r4-r8". Signed-off-by:Ivan Djelic <ivan.djelic@parrot.com> Reviewed-by:
Nicolas Pitre <nico@linaro.org> Signed-off-by:
Dirk Behme <dirk.behme@gmail.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Peter Jones authored
If the sentinel triggers, we do not want the boot loader authors to just poke it and make the error go away, we want them to actually fix the problem. This should help avoid making the incorrect change in non-compliant bootloaders. [ hpa: dropped the Documentation/x86/boot.txt hunk pending clarifications ] Signed-off-by:
Peter Jones <pjones@redhat.com> Link: http://lkml.kernel.org/r/1362592823-28967-1-git-send-email-pjones@redhat.comSigned-off-by:
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Josh Boyer authored
When boot_params->sentinel is set, all we really know is that some undefined set of fields in struct boot_params contain garbage. In the particular case of efi_info, however, there is a private magic for that substructure, so it is generally safe to leave it even if the bootloader is broken. kexec (for which we did the initial analysis) did not initialize this field, but of course all the EFI bootloaders do, and most EFI bootloaders are broken in this respect (and should be fixed.) Reported-by:
Robin Holt <holt@sgi.com> Link: http://lkml.kernel.org/r/CA%2B5PVA51-FT14p4CRYKbicykugVb=PiaEycdQ57CK2km_OQuRQ@mail.gmail.comTested-by:
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Yinghai Lu authored
Henrik reported that his MacAir 3.1 would not boot with | commit 8d57470d | Date: Fri Nov 16 19:38:58 2012 -0800 | | x86, mm: setup page table in top-down It turns out that we do not calculate the real_end properly: We try to get 2M size with 4K alignment, and later will round down to 2M, so we will get less then 2M for first mapping, in extreme case could be only 4K only. In Henrik's system it has (1M-32K) as last usable rage is [mem 0x7f9db000-0x7fef8fff]. The problem is exposed when EFI booting have several holes and it will force mapping to use PTE instead as we only map usable areas. To fix it, just make it be 2M aligned, so we can be guaranteed to be able to use large pages to map it. Reported-by:
Henrik Rydberg <rydberg@euromail.se> Bisected-by:
Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/CAE9FiQX4nQ7_1kg5RL_vh56rmcSHXUi1ExrZX7CwED4NGMnHfg@mail.gmail.comSigned-off-by:
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Krzysztof Mazur authored
The commit 27be4570 ('x86 idle: remove 32-bit-only "no-hlt" parameter, hlt_works_ok flag') removed the hlt_works_ok flag from struct cpuinfo_x86, but boot_cpu_data and new_cpu_data initializers were not changed causing setting f00f_bug flag, instead of fdiv_bug. If CONFIG_X86_F00F_BUG is not set the f00f_bug flag is never cleared. To avoid such problems in future C99-style initialization is now used. Signed-off-by:
Krzysztof Mazur <krzysiek@podlesie.net> Acked-by:
Borislav Petkov <bp@suse.de> Cc: len.brown@intel.com Link: http://lkml.kernel.org/r/1362266082-2227-1-git-send-email-krzysiek@podlesie.netSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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git://people.freedesktop.org/~danvet/drm-intelDave Airlie authored
A bunch of fixes, nothing truely horrible: - Fix PCH irq handling race which resulted in missed gmbus/dp aux irqs and subsequent fallout (Paulo) - Fixup off-by-one in our hsw id table (Kenneth) - Fixup ilk rc6 support (disabled by default), regression introduced in 3.8 - g4x plane w/a from Egbert Eich - gen2/3/4 dpms suspend/standy fixes for VGA outputs from Patrik Jakobsson - Workaround dying ivb machines with less aggressive rc6 values (Stéphane Marchesin) * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: Turn off hsync and vsync on ADPA when disabling crt drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits drm/i915: also disable south interrupts when handling them drm/i915: enable irqs earlier when resuming drm/i915: Increase the RC6p threshold. DRM/i915: On G45 enable cursor plane briefly after enabling the display plane. drm/i915: Fix Haswell/CRW PCI IDs. drm/i915: Don't clobber crtc->fb when queue_flip fails drm/i915: wait_event_timeout's timeout is in jiffies drm/i915: Fix missing variable initilization
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- 06 Mar, 2013 5 commits
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Stephen Boyd authored
WARNING: vmlinux.o(.text+0xfb80): Section mismatch in reference from the function armpmu_register() to the function .init.text:armpmu_init() The function armpmu_register() references the function __init armpmu_init(). This is often because armpmu_register lacks a __init annotation or the annotation of armpmu_init is wrong. Just drop the __init marking on armpmu_init() because armpmu_register() no longer has an __init marking. Acked-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> Signed-off-by:
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Jonathan Austin authored
Before jumping to (position independent) C-code from the decompressor's assembler world we set-up the C environment. This setup currently does not set r9, which for arm-none-uclinux-uclibceabi toolchains is by default expected to be the PIC offset base register (IE should point to the beginning of the GOT). Currently, therefore, in order to build working kernels that use the decompressor it is necessary to use an arm-linux-gnueabi toolchain, or similar. uClinux toolchains cause a prefetch abort to occur at the beginning of the decompress_kernel function. This patch allows uClinux toolchains to build bootable zImages by forcing the -mno-single-pic-base option, which ensures that the location of the GOT is re-derived each time it is required, and r9 becomes free for use as a general purpose register. This has a small (4% in instruction terms) advantage over the alternative of setting r9 to point to the GOT before calling into the C-world. Signed-off-by:
Jonathan Austin <jonathan.austin@arm.com> Acked-by:
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Rafael J. Wysocki authored
* pm-fixes: cpufreq / intel_pstate: Do not load on VM that does not report max P state. cpufreq / intel_pstate: Fix intel_pstate_init() error path PM / QoS: Remove device PM QoS sysfs attributes at the right place PM / QoS: Fix concurrency issues and memory leaks in device PM QoS cpufreq: highbank: do not initialize array with a loop PM / OPP: improve introductory documentation cpufreq: Fix a typo in comment mailbox, pl320-ipc: remove __init from probe function
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Rafael J. Wysocki authored
* acpi-fixes: ACPI / glue: Drop .find_bridge() callback from struct acpi_bus_type ACPI / glue: Add .match() callback to struct acpi_bus_type ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0 ACPI / processor: Remove redundant NULL check before kfree ACPI / Sleep: Avoid interleaved message on errors
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Dirk Brandewie authored
It seems some VMs support the P state MSRs but return zeros. Fail gracefully if we are running in this environment. References: https://bugzilla.redhat.com/show_bug.cgi?id=916833Reported-by:
Josh Boyer <jwboyer@redhat.com> Signed-off-by:
Dirk Brandewie <dirk.j.brandewie@intel.com> Acked-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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