aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2014-04-09Merge branch 'i2c/for-next' of ↵Linus Torvalds64-501/+3292
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 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 b424080a9e08: "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 ...
2014-04-09Merge tag 'mmc-updates-for-3.15-rc1' of ↵Linus Torvalds63-1166/+2577
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 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 ...
2014-04-09Merge branch 'merge' of ↵Linus Torvalds40-738/+546
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 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 ...
2014-04-09futex: avoid race between requeue and wakeLinus Torvalds1-0/+5
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 <[email protected]> Acked-by: Davidlohr Bueso <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] # 3.14 Signed-off-by: Linus Torvalds <[email protected]>
2014-04-09tracepoint: Fix sparse warnings in tracepoint.cMathieu Desnoyers3-5/+9
Fix the following sparse warnings: CHECK kernel/tracepoint.c kernel/tracepoint.c:184:18: warning: incorrect type in assignment (different address spaces) kernel/tracepoint.c:184:18: expected struct tracepoint_func *tp_funcs kernel/tracepoint.c:184:18: got struct tracepoint_func [noderef] <asn:4>*funcs kernel/tracepoint.c:216:18: warning: incorrect type in assignment (different address spaces) kernel/tracepoint.c:216:18: expected struct tracepoint_func *tp_funcs kernel/tracepoint.c:216:18: got struct tracepoint_func [noderef] <asn:4>*funcs kernel/tracepoint.c:392:24: error: return expression in void function CC kernel/tracepoint.o kernel/tracepoint.c: In function tracepoint_module_going: kernel/tracepoint.c:491:6: warning: symbol 'syscall_regfunc' was not declared. Should it be static? kernel/tracepoint.c:508:6: warning: symbol 'syscall_unregfunc' was not declared. Should it be static? Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mathieu Desnoyers <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2014-04-09block: Ensure we only enable integrity metadata for reads and writesMartin K. Petersen1-0/+3
We'd occasionally attempt to generate protection information for flushes and other requests with a zero payload. Make sure we only attempt to enable integrity for reads and writes. Signed-off-by: Martin K. Petersen <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2014-04-09block: Fix integrity verificationMartin K. Petersen1-10/+9
Commit bf36f9cfa6d3d caused a regression by effectively reverting Nic's fix from 5837c80e870b that ensures we traverse the full bio_vec list upon completion. Signed-off-by: Martin K. Petersen <[email protected]> Cc: Nicholas Bellinger <[email protected]> Cc: Gu Zheng <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2014-04-09block: Fix for_each_bvec()Martin K. Petersen1-3/+3
Commit 4550dd6c6b062 introduced for_each_bvec() which iterates over each bvec attached to a bio or bip. However, the macro fails to check bi_size before dereferencing which can lead to crashes while counting/mapping integrity scatterlist segments. Signed-off-by: Martin K. Petersen <[email protected]> Cc: Kent Overstreet <[email protected]> Cc: Nicholas Bellinger <[email protected]> Cc: <[email protected]> # v3.14+ Signed-off-by: Jens Axboe <[email protected]>
2014-04-09ALSA: hda - Make full_reset booleanThierry Reding3-7/+7
The full_reset argument to azx_init_chip() carries boolean rather than numerical information, so update the type to reflect that. Signed-off-by: Thierry Reding <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2014-04-09ARM: 8018/1: Add {inc,dec}_preempt_count asm macrosCatalin Marinas3-29/+37
The patch adds asm macros for inc_preempt_count and dec_preempt_count_ti (which also gets the current thread_info) instead of open-coding them in arch/arm/vfp/*.S files. Signed-off-by: Catalin Marinas <[email protected]> Tested-by: Arun KS <[email protected]> Signed-off-by: Russell King <[email protected]>
2014-04-09ARM: 8017/1: Move asm macro get_thread_info to asm/assembler.hCatalin Marinas4-13/+18
asm/assembler.h is a better place for this macro since it is used by asm files outside arch/arm/kernel/ Signed-off-by: Catalin Marinas <[email protected]> Tested-by: Arun KS <[email protected]> Signed-off-by: Russell King <[email protected]>
2014-04-09ALSA: hda - add headset mic detect quirk for a Dell laptopHui Wang1-0/+1
When we plug a 3-ring headset on the Dell machine (VID: 0x10ec0283, SID: 0x10280667), the headset mic can't be detected, after apply this patch, the headset mic can work well. BugLink: https://bugs.launchpad.net/bugs/1297581 Cc: David Henningsson <[email protected]> Cc: [email protected] Signed-off-by: Hui Wang <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2014-04-09sound: dmasound: use module_platform_driver_probe()Christoph Jaeger1-13/+1
Eliminate boilerplate code by using module_platform_driver_probe(). Signed-off-by: Christoph Jaeger <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2014-04-09ALSA: au1x00: use module_platform_driver()Christoph Jaeger1-12/+1
Eliminate boilerplate code by using module_platform_driver(). Signed-off-by: Christoph Jaeger <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2014-04-09ALSA: hda - Use runtime helper to check active state.Dylan Reid1-1/+1
From azx_interrupt, use the helper to check if the device is active instead of checking the state. This will do the right thing if runtime pm is disabled in addition to if the device is suspended. Signed-off-by: Dylan Reid <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2014-04-09raid5: get_active_stripe avoids device_lockShaohua Li1-7/+2
For sequential workload (or request size big workload), get_active_stripe can find cached stripe. In this case, we always hold device_lock, which exposes a lot of lock contention for such workload. If stripe count isn't 0, we don't need hold the lock actually, since we just increase its count. And this is the hot code path for such workload. Unfortunately we must delete the BUG_ON. Signed-off-by: Shaohua Li <[email protected]> Signed-off-by: NeilBrown <[email protected]>
2014-04-09raid5: make_request does less prepare waitShaohua Li1-5/+14
In NUMA machine, prepare_to_wait/finish_wait in make_request exposes a lot of contention for sequential workload (or big request size workload). For such workload, each bio includes several stripes. So we can just do prepare_to_wait/finish_wait once for the whold bio instead of every stripe. This reduces the lock contention completely for such workload. Random workload might have the similar lock contention too, but I didn't see it yet, maybe because my stroage is still not fast enough. Signed-off-by: Shaohua Li <[email protected]> Signed-off-by: NeilBrown <[email protected]>
2014-04-09md: avoid oops on unload if some process is in poll or select.NeilBrown1-0/+16
If md-mod is unloaded while some process is in poll() or select(), then that process maintains a pointer to md_event_waiters, and when the try to unlink from that list, they will oops. The procfs infrastructure ensures that ->poll won't be called after remove_proc_entry, but doesn't provide a wait_queue_head for us to use, and the waitqueue code doesn't provide a way to remove all listeners from a waitqueue. So we need to: 1/ make sure no further references to md_event_waiters are taken (by setting md_unloading) 2/ wake up all processes currently waiting, and 3/ wait until all those processes have disconnected from our wait_queue_head. Reported-by: "majianpeng" <[email protected]> Signed-off-by: NeilBrown <[email protected]>
2014-04-09md/raid1: r1buf_pool_alloc: free allocate pages when subsequent allocation ↵NeilBrown1-4/+13
fails. When performing a user-request check/repair (MD_RECOVERY_REQUEST is set) on a raid1, we allocate multiple bios each with their own set of pages. If the page allocations for one bio fails, we currently do *not* free the pages allocated for the previous bios, nor do we free the bio itself. This patch frees all the already-allocate pages, and makes sure that all the bios are freed as well. This bug can cause a memory leak which can ultimately OOM a machine. It was introduced in 3.10-rc1. Fixes: a07876064a0b73ab5ef1ebcf14b1cf0231c07858 Cc: Kent Overstreet <[email protected]> Cc: [email protected] (3.10+) Reported-by: Russell King - ARM Linux <[email protected]> Signed-off-by: NeilBrown <[email protected]>
2014-04-09powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_selfStewart Smith2-14/+4
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09Revert "powerpc/powernv: hwmon driver for power values, fan rpm and temperature"Benjamin Herrenschmidt3-538/+0
This reverts commit 0de7f8a917b5202014430e0055c0e1db0348bd62. 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: Benjamin Herrenschmidt <[email protected]> ---
2014-04-09power, sched: stop updating inside arch_update_cpu_topology() when nothing ↵Michael Wang1-0/+15
to be update 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 <[email protected]> CC: Paul Mackerras <[email protected]> CC: Nathan Fontenot <[email protected]> CC: Stephen Rothwell <[email protected]> CC: Andrew Morton <[email protected]> CC: Robert Jennings <[email protected]> CC: Jesse Larrew <[email protected]> CC: "Srivatsa S. Bhat" <[email protected]> CC: Alistair Popple <[email protected]> Suggested-by: "Srivatsa S. Bhat" <[email protected]> Signed-off-by: Michael Wang <[email protected]> Reviewed-by: Srivatsa S. Bhat <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.Tony Breeds1-0/+1
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 <[email protected]> Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.cMonam Agarwal1-1/+1
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/opal: Add missing includeMichael Neuling1-0/+2
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc: Convert last uses of __FUNCTION__ to __func__Joe Perches1-6/+5
Just about all of these have been converted to __func__, so convert the last uses. Signed-off-by: Joe Perches <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc: Add lq/stq emulationAnton Blanchard3-8/+46
Recent CPUs support quad word load and store instructions. Add support to the alignment handler for them. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/powernv: Add invalid OPAL callJoel Stanley3-0/+6
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/powernv: Add OPAL message log interfaceJoel Stanley4-1/+128
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: Joel Stanley <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/book3s: Fix mc_recoverable_range buffer overrun issue.Mahesh Salgaonkar1-8/+20
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc: Remove dead code in sycall entryMichael Neuling1-8/+0
In: commit 742415d6b66bf09e3e73280178ef7ec85c90b7ee Author: Michael Neuling <[email protected]> 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: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc: Use of_node_init() for the fakenode in msi_bitmap.cLi Zhong1-1/+1
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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()Aneesh Kumar K.V1-0/+13
We need to handle numa pte via the slow path Signed-off-by: Aneesh Kumar K.V <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09powerpc/powernv: Fix endian issues with sensor codeAnton Blanchard2-3/+4
One OPAL call and one device tree property needed byte swapping. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-04-09md/bitmap: don't abuse i_writecount for bitmap files.NeilBrown3-35/+16
md bitmap code currently tries to use i_writecount to stop any other process from writing to out bitmap file. But that is really an abuse and has bit-rotted so locking is all wrong. So discard that - root should be allowed to shoot self in foot. Still use it in a much less intrusive way to stop the same file being used as bitmap on two different array, and apply other checks to ensure the file is at least vaguely usable for bitmap storage (is regular, is open for write. Support for ->bmap is already checked elsewhere). Reported-by: Al Viro <[email protected]> Signed-off-by: NeilBrown <[email protected]>
2014-04-08Merge branch 'for-3.15' of git://linux-nfs.org/~bfields/linuxLinus Torvalds27-137/+264
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 ...
2014-04-08tracepoint: Simplify tracepoint module searchSteven Rostedt (Red Hat)2-7/+5
Instead of copying the num_tracepoints and tracepoints_ptrs from the module structure to the tp_mod structure, which only uses it to find the module associated to tracepoints of modules that are coming and going, simply copy the pointer to the module struct to the tracepoint tp_module structure. Also removed un-needed brackets around an if statement. Link: http://lkml.kernel.org/r/[email protected] Acked-by: Mathieu Desnoyers <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2014-04-08tracepoint: Use struct pointer instead of name hash for reg/unreg tracepointsMathieu Desnoyers9-352/+331
Register/unregister tracepoint probes with struct tracepoint pointer rather than tracepoint name. This change, which vastly simplifies tracepoint.c, has been proposed by Steven Rostedt. It also removes 8.8kB (mostly of text) to the vmlinux size. From this point on, the tracers need to pass a struct tracepoint pointer to probe register/unregister. A probe can now only be connected to a tracepoint that exists. Moreover, tracers are responsible for unregistering the probe before the module containing its associated tracepoint is unloaded. text data bss dec hex filename 10443444 4282528 10391552 25117524 17f4354 vmlinux.orig 10434930 4282848 10391552 25109330 17f2352 vmlinux Link: http://lkml.kernel.org/r/[email protected] CC: Ingo Molnar <[email protected]> CC: Frederic Weisbecker <[email protected]> CC: Andrew Morton <[email protected]> CC: Frank Ch. Eigler <[email protected]> CC: Johannes Berg <[email protected]> Signed-off-by: Mathieu Desnoyers <[email protected]> [ SDR - fixed return val in void func in tracepoint_module_going() ] Signed-off-by: Steven Rostedt <[email protected]>
2014-04-08Merge branch 'akpm' (incoming from Andrew)Linus Torvalds14-150/+144
Merge a few more patches from Andrew Morton: "A few leftovers" * emailed patches from Andrew Morton <[email protected]>: 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
2014-04-08fs/ncpfs/dir.c: fix indenting in ncp_lookup()Dan Carpenter1-2/+2
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 <[email protected]> Cc: Petr Vandrovec <[email protected]> Acked-by: Dave Chiluk <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08ncpfs/inode.c: fix mismatch printk formats and argumentsJoe Perches1-2/+2
Conversions to ncp_dbg showed some format/argument mismatches so fix them. Signed-off-by: Joe Perches <[email protected]> Cc: Petr Vandrovec <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08ncpfs: remove now unused PRINTK macroJoe Perches1-3/+0
Uses are gone, remove the macro. Signed-off-by: Joe Perches <[email protected]> Cc: Petr Vandrovec <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08ncpfs: convert PPRINTK to ncp_vdbgJoe Perches5-18/+22
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: Joe Perches <[email protected]> Cc: Petr Vandrovec <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08ncpfs: convert DPRINTK/DDPRINTK to ncp_dbgJoe Perches9-83/+74
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: Joe Perches <[email protected]> Cc: Petr Vandrovec <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08ncpfs: Add pr_fmt and convert printks to pr_<level>Joe Perches5-27/+34
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: Joe Perches <[email protected]> Cc: Petr Vandrovec <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08arch/x86/mm/kmemcheck/kmemcheck.c: use kstrtoint() instead of sscanf()David Rientjes1-1/+7
Kmemcheck should use the preferred interface for parsing command line arguments, kstrto*(), rather than sscanf() itself. Use it appropriately. Signed-off-by: David Rientjes <[email protected]> Cc: Vegard Nossum <[email protected]> Acked-by: Pekka Enberg <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08lib/percpu_counter.c: fix bad percpu counter state during suspendJens Axboe1-1/+1
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 1cf7e9c68fe8 ("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 <[email protected]> Reported-by: Laszlo Ersek <[email protected]> Tested-by: Laszlo Ersek <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08autofs4: check dev ioctl size before allocatingSasha Levin1-0/+3
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 <[email protected]> Signed-off-by: Ian Kent <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08mm: vmscan: do not swap anon pages just because free+file is lowJohannes Weiner1-15/+1
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 81c0a2bb515f ("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 <[email protected]> Acked-by: Rafael Aquini <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Suleiman Souhlal <[email protected]> Cc: <[email protected]> [3.12+] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-08drivers/block/loop.c: ratelimit error messagesMike Galbraith1-4/+4
Metric tons of high speed spew is not helpful when things go pear shaped. systemd lost its mind, forgot how to stop services it insists on being sole manager of, massive printk() flood ensued, box eventually died. [16206.684000] loop: Write error at byte offset 11412291584, length 4096. [16206.684000] systemd-journald[1758]: /dev/kmsg buffer overrun, some messages lost. [16206.684000] loop: Write error at byte offset 13155434496, length 4096. [16206.684000] loop: Write error at byte offset 13155438592, length 4096. [16206.684000] loop: Write error at byte offset 13155442688, length 4096. [16206.684000] loop: Write error at byte offset 13960736768, length 4096. [16206.684000] loop: Write error at byte offset 14229172224, length 4096. [16206.684000] systemd-journald[1758]: /dev/kmsg buffer overrun, some messages lost. [16206.684000] loop: Write error at byte offset 14766043136, length 4096. [16206.684000] loop: Write error at byte offset 15034478592, length 4096. [16206.684000] systemd-journald[1758]: /dev/kmsg buffer overrun, some messages lost. Signed-off-by: Mike Galbraith <[email protected]> Cc: Jens Axboe <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.