- 09 Apr, 2014 29 commits
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Behan Webster authored
Similar to the fix in 40413dcb MODULE_DEVICE_TABLE(x86cpu, ...) expects the struct to be called struct x86cpu_device_id, and not struct x86_cpu_id which is what is used in the rest of the kernel code. Although gcc seems to ignore this error, clang fails without this define to fix the name. Code from drivers/thermal/x86_pkg_temp_thermal.c static const struct x86_cpu_id __initconst pkg_temp_thermal_ids[] = { ... }; MODULE_DEVICE_TABLE(x86cpu, pkg_temp_thermal_ids); Error from clang: drivers/thermal/x86_pkg_temp_thermal.c:577:1: error: variable has incomplete type 'const struct x86cpu_device_id' MODULE_DEVICE_TABLE(x86cpu, pkg_temp_thermal_ids); ^ include/linux/module.h:145:3: note: expanded from macro 'MODULE_DEVICE_TABLE' MODULE_GENERIC_TABLE(type##_device, name) ^ include/linux/module.h:87:32: note: expanded from macro 'MODULE_GENERIC_TABLE' extern const struct gtype##_id __mod_##gtype##_table \ ^ <scratch space>:143:1: note: expanded from here __mod_x86cpu_device_table ^ drivers/thermal/x86_pkg_temp_thermal.c:577:1: note: forward declaration of 'struct x86cpu_device_id' include/linux/module.h:145:3: note: expanded from macro 'MODULE_DEVICE_TABLE' MODULE_GENERIC_TABLE(type##_device, name) ^ include/linux/module.h:87:21: note: expanded from macro 'MODULE_GENERIC_TABLE' extern const struct gtype##_id __mod_##gtype##_table \ ^ <scratch space>:141:1: note: expanded from here x86cpu_device_id ^ 1 error generated. Signed-off-by:
Behan Webster <behanw@converseincode.com> Signed-off-by:
Jan-Simon Möller <dl9pf@gmx.de> Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jan-Simon Möller authored
Protect more options for x86 with cc-option so that we don't get errors when using clang instead of gcc. Add more or different options when using clang as well. Also need to enforce that SSE is off for clang and the stack is 8-byte aligned. Signed-off-by:
Mark Charlebois <charlebm@gmail.com>
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Behan Webster authored
The only real change is passing in event_mask to the formerly nested functions. Otherwise it's just moving around function and macro code. This is the only place in the Linux kernel where nested functions are still in use. Nested functions aren't part of the C standards, and complicate the generated code. Although the Linux Kernel has never set out to be entirely C standard compliant, it is increasingly compliant to the standard which is supported by other compilers such as Clang. The LLVMLinux project is working on being able to compile the Linux kernel with Clang. The use of nested functions blocks this effort. Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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Mark Charlebois authored
Add a compiler-clang.h file to add specific macros needed for compiling the kernel with clang. Initially the only override required is the macro for silencing the compiler for a purposefully uninintialized variable. Author: Mark Charlebois <charlebm@gmail.com> Signed-off-by:
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Behan Webster authored
Fix uninitialized return code in default case in cmpxchg-local.h This patch fixes the code to prevent an uninitialized return value that is detected when compiling with clang. The bug produces numerous warnings when compiling the Linux kernel with clang. Signed-off-by:
David Howells <dhowells@redhat.com> Acked-by:
Arnd Bergmann <arnd@arndb.de>
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Jan-Simon Möller authored
When building the LINUX_COMPILER definition, instead of merely taking the last line from "$(CC) -v", grep for ' version ' in the output. This supports both gcc and clang. Signed-off-by:
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Jan-Simon Möller authored
Clang has a few other kinds of derived files which shouldn't be added to a patch. Add them to the Documentation/dontdiff file to prevent this. Signed-off-by:
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Jan-Simon Möller authored
When compiling kernel with clang, disable warnings which are too noisy, and add the clang flag catch-undefined-behavior. Signed-off-by:
Mark Charlebois <mcharleb@gmail.com> Cc: PaX Team <pageexec@freemail.hu>
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Behan Webster authored
Add support to toplevel Makefile for compiling with clang, both for HOSTCC and CC. Use cc-option to prevent gcc option from breaking clang, and from clang options from breaking gcc. Clang 3.4 semantics are the same as gcc semantics for unsupported flags. For unsupported warnings clang 3.4 returns true but shows a warning and gcc shows a warning and returns false. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c updates from Wolfram Sang: "Here is the pull request from the i2c subsystem. It got a little delayed because I needed to wait for a dependency to be included (commit b424080a: "reset: Add optional resets and stubs"). Plus, I had some email problems. All done now, the highlights are: - drivers can now deprecate their use of i2c classes. That shouldn't be used on embedded platforms anyhow and was often blindly copy&pasted. This mechanism gives users time to switch away and ultimately boot faster once the use of classes for those drivers is gone for good. - new drivers for QUP, Cadence, efm32 - tracepoint support for I2C and SMBus - bigger cleanups for the mv64xxx, nomadik, and designware drivers And the usual bugfixes, cleanups, feature additions. Most stuff has been in linux-next for a while. Just some hot fixes and new drivers were added a bit more recently." * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (63 commits) i2c: cadence: fix Kconfig dependency i2c: Add driver for Cadence I2C controller i2c: cadence: Document device tree bindings Documentation: i2c: improve section about flags mangling the protocol i2c: qup: use proper type fro clk_freq i2c: qup: off by ones in qup_i2c_probe() i2c: efm32: fix binding doc MAINTAINERS: update I2C web resources i2c: qup: New bus driver for the Qualcomm QUP I2C controller i2c: qup: Add device tree bindings information i2c: i2c-xiic: deprecate class based instantiation i2c: i2c-sirf: deprecate class based instantiation i2c: i2c-mv64xxx: deprecate class based instantiation i2c: i2c-designware-platdrv: deprecate class based instantiation i2c: i2c-davinci: deprecate class based instantiation i2c: i2c-bcm2835: deprecate class based instantiation i2c: mv64xxx: Fix reset controller handling i2c: omap: fix usage of IS_ERR_VALUE with pm_runtime_get_sync i2c: efm32: new bus driver i2c: exynos5: remove unnecessary cast of void pointer ...
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmcLinus Torvalds authored
Pull MMC updates from Chris Ball: "MMC highlights for 3.15: Core: - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V - Add GPIO descriptor based slot-gpio card detect API Drivers: - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c - mmci: Support HW busy detection on ux500 - omap: Support MMC_ERASE - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23 - rtsx: Support pre-req/post-req async - sdhci: Add support for Realtek RTS5250 controllers - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs" * tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (102 commits) mmc: sdhci-acpi: Intel SDIO has broken card detect mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controller mmc: sdhci-msm: Add platform_execute_tuning implementation mmc: sdhci-msm: Initial support for Qualcomm chipsets mmc: sdhci-msm: Qualcomm SDHCI binding documentation sdhci: only reprogram retuning timer when flag is set mmc: rename ARCH_BCM to ARCH_BCM_MOBILE mmc: sdhci: Allow for irq being shared mmc: sdhci-acpi: Add device id 80860F16 mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14 mmc: slot-gpio: Add GPIO descriptor based CD GPIO API mmc: slot-gpio: Split out CD IRQ request into a separate function mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers Revert "dts: socfpga: Add support for SD/MMC on the SOCFPGA platform" mmc: sdhci-spear: use generic card detection gpio support mmc: sdhci-spear: remove support for power gpio mmc: sdhci-spear: simplify resource handling mmc: sdhci-spear: fix platform_data usage mmc: sdhci-spear: fix error handling paths for DT mmc: sdhci-bcm-kona: fix build errors when built-in ...
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
Pull more powerpc updates from Ben Herrenschmidt: "Here are a few more powerpc things for you. So you'll find here the conversion of the two new firmware sysfs interfaces to the new API for self-removing files that Greg and Tejun introduced, so they can finally remove the old one. I'm also reverting the hwmon driver for powernv. I shouldn't have merged it, I got a bit carried away here. I hadn't realized it was never CCed to the relevant maintainer(s) and list(s), and happens to have some issues so I'm taking it out and it will come back via the proper channels. The rest is a bunch of LE fixes (argh, some of the new stuff was broken on LE, I really need to start testing LE myself !) and various random fixes here and there. Finally one bit that's not strictly a fix, which is the HVC OPAL change to "kick" the HVC thread when the firmware tells us there is new incoming data. I don't feel like waiting for this one, it's simple enough, and it makes a big difference in console responsiveness which is good for my nerves" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (26 commits) powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_self Revert "powerpc/powernv: hwmon driver for power values, fan rpm and temperature" power, sched: stop updating inside arch_update_cpu_topology() when nothing to be update powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules. arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c powerpc/opal: Add missing include powerpc: Convert last uses of __FUNCTION__ to __func__ powerpc: Add lq/stq emulation powerpc/powernv: Add invalid OPAL call powerpc/powernv: Add OPAL message log interface powerpc/book3s: Fix mc_recoverable_range buffer overrun issue. powerpc: Remove dead code in sycall entry powerpc: Use of_node_init() for the fakenode in msi_bitmap.c powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast() powerpc/powernv: Fix endian issues with sensor code powerpc/powernv: Fix endian issues with OPAL async code tty/hvc_opal: Kick the HVC thread on OPAL console events powerpc/powernv: Add opal_notifier_unregister() and export to modules powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early powerpc/ppc64: Gracefully handle early interrupts ...
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Linus Torvalds authored
Jan Stancek reported: "pthread_cond_broadcast/4-1.c testcase from openposix testsuite (LTP) occasionally fails, because some threads fail to wake up. Testcase creates 5 threads, which are all waiting on same condition. Main thread then calls pthread_cond_broadcast() without holding mutex, which calls: futex(uaddr1, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, uaddr2, ..) This immediately wakes up single thread A, which unlocks mutex and tries to wake up another thread: futex(uaddr2, FUTEX_WAKE_PRIVATE, 1) If thread A manages to call futex_wake() before any waiters are requeued for uaddr2, no other thread is woken up" The ordering constraints for the hash bucket waiter counting are that the waiter counts have to be incremented _before_ getting the spinlock (because the spinlock acts as part of the memory barrier), but the "requeue" operation didn't honor those rules, and nobody had even thought about that case. This fairly simple patch just increments the waiter count for the target hash bucket (hb2) when requeing a futex before taking the locks. It then decrements them again after releasing the lock - the code that actually moves the futex(es) between hash buckets will do the additional required waiter count housekeeping. Reported-and-tested-by:Jan Stancek <jstancek@redhat.com> Acked-by:
Davidlohr Bueso <davidlohr@hp.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # 3.14 Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Stewart Smith authored
We are currently using sysfs_schedule_callback() which is deprecated and about to be removed. Switch to the new interface instead. Signed-off-by:
Stewart Smith <stewart@linux.vnet.ibm.com> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Benjamin Herrenschmidt authored
This reverts commit 0de7f8a9. This driver wasn't merged via the proper maintainers (my fault ... ooops !) and has serious issues so let's take it out for now and have a new better one be merged the right way Signed-off-by:
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Michael Wang authored
Since v1: Edited the comment according to Srivatsa's suggestion. During the testing, we encounter below WARN followed by Oops: WARNING: at kernel/sched/core.c:6218 ... NIP [c000000000101660] .build_sched_domains+0x11d0/0x1200 LR [c000000000101358] .build_sched_domains+0xec8/0x1200 PACATMSCRATCH [800000000000f032] Call Trace: [c00000001b103850] [c000000000101358] .build_sched_domains+0xec8/0x1200 [c00000001b1039a0] [c00000000010aad4] .partition_sched_domains+0x484/0x510 [c00000001b103aa0] [c00000000016d0a8] .rebuild_sched_domains+0x68/0xa0 [c00000001b103b30] [c00000000005cbf0] .topology_work_fn+0x10/0x30 ... Oops: Kernel access of bad area, sig: 11 [#1] ... NIP [c00000000045c000] .__bitmap_weight+0x60/0xf0 LR [c00000000010132c] .build_sched_domains+0xe9c/0x1200 PACATMSCRATCH [8000000000029032] Call Trace: [c00000001b1037a0] [c000000000288ff4] .kmem_cache_alloc_node_trace+0x184/0x3a0 [c00000001b103850] [c00000000010132c] .build_sched_domains+0xe9c/0x1200 [c00000001b1039a0] [c00000000010aad4] .partition_sched_domains+0x484/0x510 [c00000001b103aa0] [c00000000016d0a8] .rebuild_sched_domains+0x68/0xa0 [c00000001b103b30] [c00000000005cbf0] .topology_work_fn+0x10/0x30 ... This was caused by that 'sd->groups == NULL' after building groups, which was caused by the empty 'sd->span'. The cpu's domain contained nothing because the cpu was assigned to a wrong node, due to the following unfortunate sequence of events: 1. The hypervisor sent a topology update to the guest OS, to notify changes to the cpu-node mapping. However, the update was actually redundant - i.e., the "new" mapping was exactly the same as the old one. 2. Due to this, the 'updated_cpus' mask turned out to be empty after exiting the 'for-loop' in arch_update_cpu_topology(). 3. So we ended up calling stop-machine() with an empty cpumask list, which made stop-machine internally elect cpumask_first(cpu_online_mask), i.e., CPU0 as the cpu to run the payload (the update_cpu_topology() function). 4. This causes update_cpu_topology() to be run by CPU0. And since 'updates' is kzalloc()'ed inside arch_update_cpu_topology(), update_cpu_topology() finds update->cpu as well as update->new_nid to be 0. In other words, we end up assigning CPU0 (and eventually its siblings) to node 0, incorrectly. Along with the following wrong updating, it causes the sched-domain rebuild code to break and crash the system. Fix this by skipping the topology update in cases where we find that the topology has not actually changed in reality (ie., spurious updates). CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> CC: Nathan Fontenot <nfont@linux.vnet.ibm.com> CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: Andrew Morton <akpm@linux-foundation.org> CC: Robert Jennings <rcj@linux.vnet.ibm.com> CC: Jesse Larrew <jlarrew@linux.vnet.ibm.com> CC: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> CC: Alistair Popple <alistair@popple.id.au> Suggested-by:
"Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by:
Michael Wang <wangyun@linux.vnet.ibm.com> Reviewed-by:
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Tony Breeds authored
When building modules with a native le toolchain the linker will generate R_PPC64_TOCSAVE relocations when it's safe to omit saving r2 on a plt call. This isn't helpful in the conext of a kernel module and the kernel will fail to load those modules with an error like: nf_conntrack: Unknown ADD relocation: 109 This patch tells the linker to avoid createing R_PPC64_TOCSAVE relocations allowing modules to load. Signed-off-by:
Tony Breeds <tony@bakeyournoodle.com> Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Monam Agarwal authored
Here rcu_assign_pointer() is ensuring that the initialization of a structure is carried out before storing a pointer to that structure. So, rcu_assign_pointer(p, NULL) can always safely be converted to RCU_INIT_POINTER(p, NULL). Signed-off-by:
Monam Agarwal <monamagarwal123@gmail.com> Signed-off-by:
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Michael Neuling authored
next-20140324 currently fails compiling celleb_defconfig with: arch/powerpc/include/asm/opal.h:894:42: error: 'struct notifier_block' declared inside parameter list [-Werror] arch/powerpc/include/asm/opal.h:894:42: error: its scope is only this definition or declaration, which is probably not what you want [-Werror] arch/powerpc/include/asm/opal.h:896:14: error: 'struct notifier_block' declared inside parameter list [-Werror] This is due to a missing include which is added here. Signed-off-by:
Michael Neuling <mikey@neuling.org> Signed-off-by:
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Joe Perches authored
Just about all of these have been converted to __func__, so convert the last uses. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Anton Blanchard authored
Recent CPUs support quad word load and store instructions. Add support to the alignment handler for them. Signed-off-by:
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Joel Stanley authored
This call will not be understood by OPAL, and cause it to add an error to it's log. Among other things, this is useful for testing the behaviour of the log as it fills up. Signed-off-by:
Joel Stanley <joel@jms.id.au> Signed-off-by:
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Joel Stanley authored
OPAL provides an in-memory circular buffer containing a message log populated with various runtime messages produced by the firmware. Provide a sysfs interface /sys/firmware/opal/msglog for userspace to view the messages. Signed-off-by:
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Mahesh Salgaonkar authored
Currently we wrongly allocate mc_recoverable_range buffer (to hold recoverable ranges) based on size of the property "mcheck-recoverable-ranges". This results in allocating less memory to hold available recoverable range entries from /proc/device-tree/ibm,opal/mcheck-recoverable-ranges. This patch fixes this issue by allocating mc_recoverable_range buffer based on number of entries of recoverable ranges instead of device property size. Without this change we end up allocating less memory and run into memory corruption issue. Signed-off-by:
Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by:
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Michael Neuling authored
In: commit 742415d6 Author: Michael Neuling <mikey@neuling.org> powerpc: Turn syscall handler into macros We converted the syscall entry code onto macros, but in doing this we introduced some cruft that's never run and should never have been added. This removes that code. Signed-off-by:
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Li Zhong authored
This patch uses of_node_init() to initialize the kobject in the fake node used in test_of_node(), to avoid following kobject warning. [ 0.897654] kobject: '(null)' (c0000007ca183a08): is not initialized, yet kobject_put() is being called. [ 0.897682] ------------[ cut here ]------------ [ 0.897688] WARNING: at lib/kobject.c:670 [ 0.897692] Modules linked in: [ 0.897701] CPU: 4 PID: 1 Comm: swapper/0 Not tainted 3.14.0+ #1 [ 0.897708] task: c0000007ca100000 ti: c0000007ca180000 task.ti: c0000007ca180000 [ 0.897715] NIP: c00000000046a1f0 LR: c00000000046a1ec CTR: 0000000001704660 [ 0.897721] REGS: c0000007ca1835c0 TRAP: 0700 Not tainted (3.14.0+) [ 0.897727] MSR: 8000000000029032 <SF,EE,ME,IR,DR,RI> CR: 28000024 XER: 0000000d [ 0.897749] CFAR: c0000000008ef4ec SOFTE: 1 GPR00: c00000000046a1ec c0000007ca183840 c0000000014c59b8 000000000000005c GPR04: 0000000000000001 c000000000129770 0000000000000000 0000000000000001 GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000003fef GPR12: 0000000000000000 c00000000f221200 c00000000000c350 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR24: 0000000000000000 c00000000144e808 c000000000c56f20 00000000000000d8 GPR28: c000000000cd5058 0000000000000000 c000000001454ca8 c0000007ca183a08 [ 0.897856] NIP [c00000000046a1f0] .kobject_put+0xa0/0xb0 [ 0.897863] LR [c00000000046a1ec] .kobject_put+0x9c/0xb0 [ 0.897868] Call Trace: [ 0.897874] [c0000007ca183840] [c00000000046a1ec] .kobject_put+0x9c/0xb0 (unreliable) [ 0.897885] [c0000007ca1838c0] [c000000000743f9c] .of_node_put+0x2c/0x50 [ 0.897894] [c0000007ca183940] [c000000000c83954] .test_of_node+0x1dc/0x208 [ 0.897902] [c0000007ca183b80] [c000000000c839a4] .msi_bitmap_selftest+0x24/0x38 [ 0.897913] [c0000007ca183bf0] [c00000000000bb34] .do_one_initcall+0x144/0x200 [ 0.897922] [c0000007ca183ce0] [c000000000c748e4] .kernel_init_freeable+0x2b4/0x394 [ 0.897931] [c0000007ca183db0] [c00000000000c374] .kernel_init+0x24/0x130 [ 0.897940] [c0000007ca183e30] [c00000000000a2f4] .ret_from_kernel_thread+0x5c/0x68 [ 0.897947] Instruction dump: [ 0.897952] 7fe3fb78 38210080 e8010010 ebe1fff8 7c0803a6 4800014c e89f0000 3c62ff6e [ 0.897971] 7fe5fb78 3863a950 48485279 60000000 <0fe00000> 39000000 393f0038 4bffff80 [ 0.897992] ---[ end trace 1eeffdb9f825a556 ]--- Signed-off-by:
Li Zhong <zhong@linux.vnet.ibm.com> Signed-off-by:
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Aneesh Kumar K.V authored
We need to handle numa pte via the slow path Signed-off-by:
Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by:
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Anton Blanchard authored
One OPAL call and one device tree property needed byte swapping. Signed-off-by:
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull nfsd updates from Bruce Fields: "Highlights: - server-side nfs/rdma fixes from Jeff Layton and Tom Tucker - xdr fixes (a larger xdr rewrite has been posted but I decided it would be better to queue it up for 3.16). - miscellaneous fixes and cleanup from all over (thanks especially to Kinglong Mee)" * 'for-3.15' of git://linux-nfs.org/~bfields/linux: (36 commits) nfsd4: don't create unnecessary mask acl nfsd: revert v2 half of "nfsd: don't return high mode bits" nfsd4: fix memory leak in nfsd4_encode_fattr() nfsd: check passed socket's net matches NFSd superblock's one SUNRPC: Clear xpt_bc_xprt if xs_setup_bc_tcp failed NFSD/SUNRPC: Check rpc_xprt out of xs_setup_bc_tcp SUNRPC: New helper for creating client with rpc_xprt NFSD: Free backchannel xprt in bc_destroy NFSD: Clear wcc data between compound ops nfsd: Don't return NFS4ERR_STALE_STATEID for NFSv4.1+ nfsd4: fix nfs4err_resource in 4.1 case nfsd4: fix setclientid encode size nfsd4: remove redundant check from nfsd4_check_resp_size nfsd4: use more generous NFS4_ACL_MAX nfsd4: minor nfsd4_replay_cache_entry cleanup nfsd4: nfsd4_replay_cache_entry should be static nfsd4: update comments with obsolete function name rpc: Allow xdr_buf_subsegment to operate in-place NFSD: Using free_conn free connection SUNRPC: fix memory leak of peer addresses in XPRT ...
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- 08 Apr, 2014 11 commits
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Linus Torvalds authored
Merge a few more patches from Andrew Morton: "A few leftovers" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: fs/ncpfs/dir.c: fix indenting in ncp_lookup() ncpfs/inode.c: fix mismatch printk formats and arguments ncpfs: remove now unused PRINTK macro ncpfs: convert PPRINTK to ncp_vdbg ncpfs: convert DPRINTK/DDPRINTK to ncp_dbg ncpfs: Add pr_fmt and convert printks to pr_<level> arch/x86/mm/kmemcheck/kmemcheck.c: use kstrtoint() instead of sscanf() lib/percpu_counter.c: fix bad percpu counter state during suspend autofs4: check dev ioctl size before allocating mm: vmscan: do not swap anon pages just because free+file is low
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Dan Carpenter authored
My static checker suggests adding curly braces here. Probably that was the intent, but actually the code works the same either way. I've just changed the indenting and left the code as-is. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: Petr Vandrovec <petr@vandrovec.name> Acked-by:
Dave Chiluk <chiluk@canonical.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Joe Perches authored
Conversions to ncp_dbg showed some format/argument mismatches so fix them. Signed-off-by:
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Joe Perches authored
Uses are gone, remove the macro. Signed-off-by:
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Joe Perches authored
Use a more current logging style. Convert the paranoia debug statement to vdbg. Remove the embedded function names as dynamic_debug can do that. Signed-off-by:
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Joe Perches authored
Use a more current logging style and enable use of dynamic debugging. Remove embedded function names, dynamic debug can add this instead. Signed-off-by:
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Joe Perches authored
Convert to a more current logging style. Add pr_fmt to prefix with "ncpfs: ". Remove the embedded function names and use "%s: ", __func__ Some previously unprefixed messages now have "ncpfs: " Signed-off-by:
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David Rientjes authored
Kmemcheck should use the preferred interface for parsing command line arguments, kstrto*(), rather than sscanf() itself. Use it appropriately. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Vegard Nossum <vegardno@ifi.uio.no> Acked-by:
Pekka Enberg <penberg@kernel.org> Signed-off-by:
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Jens Axboe authored
I got a bug report yesterday from Laszlo Ersek in which he states that his kvm instance fails to suspend. Laszlo bisected it down to this commit 1cf7e9c6 ("virtio_blk: blk-mq support") where virtio-blk is converted to use the blk-mq infrastructure. After digging a bit, it became clear that the issue was with the queue drain. blk-mq tracks queue usage in a percpu counter, which is incremented on request alloc and decremented when the request is freed. The initial hunt was for an inconsistency in blk-mq, but everything seemed fine. In fact, the counter only returned crazy values when suspend was in progress. When a CPU is unplugged, the percpu counters merges that CPU state with the general state. blk-mq takes care to register a hotcpu notifier with the appropriate priority, so we know it runs after the percpu counter notifier. However, the percpu counter notifier only merges the state when the CPU is fully gone. This leaves a state transition where the CPU going away is no longer in the online mask, yet it still holds private values. This means that in this state, percpu_counter_sum() returns invalid results, and the suspend then hangs waiting for abs(dead-cpu-value) requests to complete which of course will never happen. Fix this by clearing the state earlier, so we never have a case where the CPU isn't in online mask but still holds private state. This bug has been there since forever, I guess we don't have a lot of users where percpu counters needs to be reliable during the suspend cycle. Signed-off-by:
Jens Axboe <axboe@fb.com> Reported-by:
Laszlo Ersek <lersek@redhat.com> Tested-by:
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Sasha Levin authored
There wasn't any check of the size passed from userspace before trying to allocate the memory required. This meant that userspace might request more space than allowed, triggering an OOM. Signed-off-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
Ian Kent <raven@themaw.net> Signed-off-by:
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Johannes Weiner authored
Page reclaim force-scans / swaps anonymous pages when file cache drops below the high watermark of a zone in order to prevent what little cache remains from thrashing. However, on bigger machines the high watermark value can be quite large and when the workload is dominated by a static anonymous/shmem set, the file set might just be a small window of used-once cache. In such situations, the VM starts swapping heavily when instead it should be recycling the no longer used cache. This is a longer-standing problem, but it's more likely to trigger after commit 81c0a2bb ("mm: page_alloc: fair zone allocator policy") because file pages can no longer accumulate in a single zone and are dispersed into smaller fractions among the available zones. To resolve this, do not force scan anon when file pages are low but instead rely on the scan/rotation ratios to make the right prediction. Signed-off-by:
Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Rafael Aquini <aquini@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: Suleiman Souhlal <suleiman@google.com> Cc: <stable@kernel.org> [3.12+] Signed-off-by:
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