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* sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-021-0/+6
| | | | | | | | | | | | | | | | | | | <linux/sched/wake_q.h> We are going to split <linux/sched/wake_q.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/wake_q.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-022-0/+8
| | | | | | | | | | | | | | | | | | | | <linux/sched/idle.h> We are going to split <linux/sched/idle.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/idle.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-022-0/+7
| | | | | | | | | | | | | | | | | | | | <linux/sched/topology.h> We are going to split <linux/sched/topology.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/topology.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* kasan, sched/headers: Uninline kasan_enable/disable_current()Ingo Molnar2017-03-021-8/+2
| | | | | | | | | | | | | | | | | | | | | | | <linux/kasan.h> is a low level header that is included early in affected kernel headers. But it includes <linux/sched.h> which complicates the cleanup of sched.h dependencies. But kasan.h has almost no need for sched.h: its only use of scheduler functionality is in two inline functions which are not used very frequently - so uninline kasan_enable_current() and kasan_disable_current(). Also add a <linux/sched.h> dependency to a .c file that depended on kasan.h including it. This paves the way to remove the <linux/sched.h> include from kasan.h. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* mm/vmacache, sched/headers: Introduce 'struct vmacache' and move it from ↵Ingo Molnar2017-03-023-8/+17
| | | | | | | | | | | | | | | | | | | <linux/sched.h> to <linux/mm_types> The <linux/sched.h> header includes various vmacache related defines, which are arguably misplaced. Move them to mm_types.h and minimize the sched.h impact by putting all task vmacache state into a new 'struct vmacache' structure. No change in functionality. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/headers, cgroups: Remove the threadgroup_change_*() wrapperyIngo Molnar2017-03-022-33/+8
| | | | | | | | | | | | | | | | | | | | | | threadgroup_change_begin()/end() is a pointless wrapper around cgroup_threadgroup_change_begin()/end(), minus a might_sleep() in the !CONFIG_CGROUPS=y case. Remove the wrappery, move the might_sleep() (the down_read() already has a might_sleep() check). This debloats <linux/sched.h> a bit and simplifies this API. Update all call sites. No change in functionality. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* rcu: Separate the RCU synchronization types and APIs into ↵Ingo Molnar2017-03-024-49/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <linux/rcupdate_wait.h> So rcupdate.h is a pretty complex header, in particular it includes <linux/completion.h> which includes <linux/wait.h> - creating a dependency that includes <linux/wait.h> in <linux/sched.h>, which prevents the isolation of <linux/sched.h> from the derived <linux/wait.h> header. Solve part of the problem by decoupling rcupdate.h from completions: this can be done by separating out the rcu_synchronize types and APIs, and updating their usage sites. Since this is a mostly RCU-internal types this will not just simplify <linux/sched.h>'s dependencies, but will make all the hundreds of .c files that include rcupdate.h but not completions or wait.h build faster. ( For rcutiny this means that two dependent APIs have to be uninlined, but that shouldn't be much of a problem as they are rare variants. ) Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/core: Remove the tsk_nr_cpus_allowed() wrapperIngo Molnar2017-03-021-5/+0
| | | | | | | | | | | | | | | tsk_nr_cpus_allowed() too is a pretty pointless wrapper that is not used consistently and which makes the code both harder to read and longer as well. So remove it - this also shrinks <linux/sched.h> a bit. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/core: Remove the tsk_cpus_allowed() wrapperIngo Molnar2017-03-021-3/+0
| | | | | | | | | | | | | | | | | So the original intention of tsk_cpus_allowed() was to 'future-proof' the field - but it's pretty ineffectual at that, because half of the code uses ->cpus_allowed directly ... Also, the wrapper makes the code longer than the original expression! So just get rid of it. This also shrinks <linux/sched.h> a bit. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/core: Move the get_preempt_disable_ip() inline to sched/core.cIngo Molnar2017-03-021-9/+0
| | | | | | | | | | | | It's defined in <linux/sched.h>, but nothing outside the scheduler uses it - so move it to the sched/core.c usage site. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/core: Convert ___assert_task_state() link time assert to BUILD_BUG_ON()Ingo Molnar2017-03-021-3/+0
| | | | | | | | | | | | | | | | | | | | The length of TASK_STATE_TO_CHAR_STR was still checked using the old link-time manual error method - convert it to BUILD_BUG_ON(). This has a couple of advantages: - it's more obvious what's going on - it reduces the size and complexity of <linux/sched.h> - BUILD_BUG_ON() will fail during compilation, with a clearer error message than the link time assert. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* sched/headers: Make all include/linux/sched/*.h headers build standaloneIngo Molnar2017-03-024-13/+21
| | | | | | | | | | | | | | Make each header self-sufficient, so that it can be built successfully both in an allnoconfig and allyesconfig kernel. Also standardize the naming of their header guards. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2017-03-012-3/+3
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool relocation fixes from Ingo Molnar: "Two fixes related to the module loading regression introduced by the recent objtool changes" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool, modules: Discard objtool annotation sections for modules objtool, compiler.h: Fix __unreachable section relocation size
| * objtool, modules: Discard objtool annotation sections for modulesJosh Poimboeuf2017-03-012-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The '__unreachable' and '__func_stack_frame_non_standard' sections are only used at compile time. They're discarded for vmlinux but they should also be discarded for modules. Since this is a recurring pattern, prefix the section names with ".discard.". It's a nice convention and vmlinux.lds.h already discards such sections. Also remove the 'a' (allocatable) flag from the __unreachable section since it doesn't make sense for a discarded section. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jessica Yu <jeyu@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends") Link: http://lkml.kernel.org/r/20170301180444.lhd53c5tibc4ns77@treble Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * objtool, compiler.h: Fix __unreachable section relocation sizeJosh Poimboeuf2017-03-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linus reported the following commit broke module loading on his laptop: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends") It showed errors like the following: module: overflow in relocation type 10 val ffffffffc02afc81 module: 'nvme' likely not compiled with -mcmodel=kernel The problem is that the __unreachable section addresses are stored using the '.long' asm directive, which isn't big enough for .text section kernel addresses. Use relative addresses instead: ".long %c0b - .\t\n" Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends") Link: http://lkml.kernel.org/r/20170301060504.oltm3iws6fmubnom@treble Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | Merge tag 'nfs-for-4.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds2017-03-018-39/+235
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Anna Schumaker: "Highlights include: Stable bugfixes: - NFSv4: Fix memory and state leak in _nfs4_open_and_get_state - xprtrdma: Fix Read chunk padding - xprtrdma: Per-connection pad optimization - xprtrdma: Disable pad optimization by default - xprtrdma: Reduce required number of send SGEs - nlm: Ensure callback code also checks that the files match - pNFS/flexfiles: If the layout is invalid, it must be updated before retrying - NFSv4: Fix reboot recovery in copy offload - Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE" - NFSv4: fix getacl head length estimation - NFSv4: fix getacl ERANGE for sum ACL buffer sizes Features: - Add and use dprintk_cont macros - Various cleanups to NFS v4.x to reduce code duplication and complexity - Remove unused cr_magic related code - Improvements to sunrpc "read from buffer" code - Clean up sunrpc timeout code and allow changing TCP timeout parameters - Remove duplicate mw_list management code in xprtrdma - Add generic functions for encoding and decoding xdr streams Bugfixes: - Clean up nfs_show_mountd_netid - Make layoutreturn_ops static and use NULL instead of 0 to fix sparse warnings - Properly handle -ERESTARTSYS in nfs_rename() - Check if register_shrinker() failed during rpcauth_init() - Properly clean up procfs/pipefs entries - Various NFS over RDMA related fixes - Silence unititialized variable warning in sunrpc" * tag 'nfs-for-4.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (64 commits) NFSv4: fix getacl ERANGE for some ACL buffer sizes NFSv4: fix getacl head length estimation Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE" NFSv4: Fix reboot recovery in copy offload pNFS/flexfiles: If the layout is invalid, it must be updated before retrying NFSv4: Clean up owner/group attribute decode SUNRPC: Add a helper function xdr_stream_decode_string_dup() NFSv4: Remove bogus "struct nfs_client" argument from decode_ace() NFSv4: Fix the underestimation of delegation XDR space reservation NFSv4: Replace callback string decode function with a generic NFSv4: Replace the open coded decode_opaque_inline() with the new generic NFSv4: Replace ad-hoc xdr encode/decode helpers with xdr_stream_* generics SUNRPC: Add generic helpers for xdr_stream encode/decode sunrpc: silence uninitialized variable warning nlm: Ensure callback code also checks that the files match sunrpc: Allow xprt->ops->timer method to sleep xprtrdma: Refactor management of mw_list field xprtrdma: Handle stale connection rejection xprtrdma: Properly recover FRWRs with in-flight FASTREG WRs xprtrdma: Shrink send SGEs array ...
| * | SUNRPC: Add a helper function xdr_stream_decode_string_dup()Trond Myklebust2017-02-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Create a helper function that decodes a xdr string object, allocates a memory buffer and then store it as a NUL terminated string. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | SUNRPC: Add generic helpers for xdr_stream encode/decodeTrond Myklebust2017-02-211-0/+177
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add some generic helpers for encoding/decoding opaque structures and basic u32/u64. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | nlm: Ensure callback code also checks that the files matchTrond Myklebust2017-02-131-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is not sufficient to just check that the lock pids match when granting a callback, we also need to ensure that we're granting the callback on the right file. Reported-by: Pankaj Singh <psingh.ait@gmail.com> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | NFSv4: Set the connection timeout to match the lease periodTrond Myklebust2017-02-091-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | Set the timeout for TCP connections to be 1 lease period to ensure that we don't lose our lease due to a faulty TCP connection. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | SUNRPC: Allow changing of the TCP timeout parameters on the flyTrond Myklebust2017-02-092-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | When the NFSv4 server tells us the lease period, we usually want to adjust down the timeout parameters on the TCP connection to ensure that we don't miss lease renewals due to a faulty connection. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | SUNRPC: Remove unused function rpc_get_timeout()Trond Myklebust2017-02-091-1/+0
| | | | | | | | | | | | | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | sunrpc: remove dead codes of cr_magic in rpc_credKinglong Mee2017-02-081-5/+0
| | | | | | | | | | | | | | | | | | | | | Don't found any place using the cr_magic. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | sunrpc: rename NFS_NGROUPS to UNX_NGROUPS for auth unixKinglong Mee2017-02-081-0/+1
| | | | | | | | | | | | | | | | | | | | | NFS_NGROUPS has been move to sunrpc, rename to UNX_NGROUPS. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | sunrpc/nfs: cleanup procfs/pipefs entry in cache_detailKinglong Mee2017-02-081-12/+3
| | | | | | | | | | | | | | | | | | | | | Record flush/channel/content entries is useless, remove them. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * | sunrpc & nfs: Add and use dprintk_cont macrosJoe Perches2017-01-301-18/+40
| | | | | | | | | | | | | | | | | | | | | | | | Allow line continuations to work properly with KERN_CONT. Signed-off-by: Joe Perches <joe@perches.com> [Anna: Add fallback dprintk_cont() for when CONFIG_SUNRPC_DEBUG=n] Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* | | Merge tag 'for-f2fs-4.11' of ↵Linus Torvalds2017-03-011-0/+8
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "This round introduces several interesting features such as on-disk NAT bitmaps, IO alignment, and a discard thread. And it includes a couple of major bug fixes as below. Enhancements: - introduce on-disk bitmaps to avoid scanning NAT blocks when getting free nids - support IO alignment to prepare open-channel SSD integration in future - introduce a discard thread to avoid long latency during checkpoint and fstrim - use SSR for warm node and enable inline_xattr by default - introduce in-memory bitmaps to check FS consistency for debugging - improve write_begin by avoiding needless read IO Bug fixes: - fix broken zone_reset behavior for SMR drive - fix wrong victim selection policy during GC - fix missing behavior when preparing discard commands - fix bugs in atomic write support and fiemap - workaround to handle multiple f2fs_add_link calls having same name ... and it includes a bunch of clean-up patches as well" * tag 'for-f2fs-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (97 commits) f2fs: avoid to flush nat journal entries f2fs: avoid to issue redundant discard commands f2fs: fix a plint compile warning f2fs: add f2fs_drop_inode tracepoint f2fs: Fix zoned block device support f2fs: remove redundant set_page_dirty() f2fs: fix to enlarge size of write_io_dummy mempool f2fs: fix memory leak of write_io_dummy mempool during umount f2fs: fix to update F2FS_{CP_}WB_DATA count correctly f2fs: use MAX_FREE_NIDS for the free nids target f2fs: introduce free nid bitmap f2fs: new helper cur_cp_crc() getting crc in f2fs_checkpoint f2fs: update the comment of default nr_pages to skipping f2fs: drop the duplicate pval in f2fs_getxattr f2fs: Don't update the xattr data that same as the exist f2fs: kill __is_extent_same f2fs: avoid bggc->fggc when enough free segments are avaliable after cp f2fs: select target segment with closer temperature in SSR mode f2fs: show simple call stack in fault injection message f2fs: no need lock_op in f2fs_write_inline_data ...
| * | | f2fs: introduce free nid bitmapChao Yu2017-02-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In scenario of intensively node allocation, free nids will be ran out soon, then it needs to stop to load free nids by traversing NAT blocks, in worse case, if NAT blocks does not be cached in memory, it generates IOs which slows down our foreground operations. In order to speed up node allocation, in this patch we introduce a new free_nid_bitmap array, so there is an bitmap table for each NAT block, Once the NAT block is loaded, related bitmap cache will be switched on, and bitmap will be set during traversing nat entries in NAT block, later we can query and update nid usage status in memory completely. With such implementation, I expect performance of node allocation can be improved in the long-term after filesystem image is mounted. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| * | | f2fs: add bitmaps for empty or full NAT blocksJaegeuk Kim2017-02-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patches adds bitmaps to represent empty or full NAT blocks containing free nid entries. If we can find valid crc|cp_ver in the last block of checkpoint pack, we'll use these bitmaps when building free nids. In order to avoid checkpointing burden, up-to-date bitmaps will be flushed only during umount time. So, normally we can get this gain, but when power-cut happens, we rely on fsck.f2fs which recovers this bitmap again. After this patch, we build free nids from nid #0 at mount time to make more full NAT blocks, but in runtime, we check empty NAT blocks to load free nids without loading any NAT pages from disk. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| * | | f2fs: support IO alignment for DATA and NODE writesJaegeuk Kim2017-01-291-0/+6
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements IO alignment by filling dummy blocks in DATA and NODE write bios. If we can guarantee, for example, 32KB or 64KB for such the IOs, we can eliminate underlying dummy page problem which FTL conducts in order to close MLC or TLC partial written pages. Note that, - it requires "-o mode=lfs". - IO size should be power of 2, not exceed BIO_MAX_PAGES, 256. - read IO is still 4KB. - do checkpoint at fsync, if dummy NODE page was written. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* | | Merge branch 'next' of ↵Linus Torvalds2017-03-011-2/+2
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management updates from Zhang Rui: - add thermal driver for R-Car Gen3 thermal sensors. - add thermal driver for ZTE' zx2967 family thermal sensors. - convert thermal ID allocation from IDR to IDA. - fix a possible NULL dereference in imx thermal driver. - fix a ti-soc-thermal driver dependency issue so that critical thermal control is still available when CPU_THERMAL is not defined. - update binding information for QorIQ thermal driver. - a couple of cleanups in thermal core, intel_powerclamp, exynos, dra752-thermal, mtk-thermal driver. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: powerpc/mpc85xx: Update TMU device tree node for T1023/T1024 powerpc/mpc85xx: Update TMU device tree node for T1040/T1042 dt-bindings: Update QorIQ TMU thermal bindings thermal: mtk_thermal: Staticise a number of data variables thermal: arm: dra752: Remove all TSHUT related definitions thermal: arm: dra752: Remove TSHUT configuration thermal: ti-soc-thermal: Remove CPU_THERMAL Dependency from TI_THERMAL thermal: imx: Fix possible NULL dereference. thermal: exynos: Remove parsing unused samsung,tmu_cal_mode property thermal: zx2967: add thermal driver for ZTE's zx2967 family thermal: use cpumask_var_t for on-stack cpu masks dt: bindings: add documentation for zx2967 family thermal sensor thermal/intel_powerclamp: Remove set-but-not-used variables thermal: rcar_gen3_thermal: Add R-Car Gen3 thermal driver thermal: rcar_gen3_thermal: Document the R-Car Gen3 thermal: convert devfreq_cooling to use an IDA thermal: convert cpu_cooling to use an IDA thermal: convert clock cooling to use an IDA thermal core: convert ID allocation to IDA
| * \ \ Merge branches 'thermal-core', 'thermal-soc', 'thermal-intel' and ↵Zhang Rui2017-02-221-2/+2
| |\ \ \ | | | | | | | | | | | | | | | 'ida-conversion' into next
| | * | | thermal core: convert ID allocation to IDAMatthew Wilcox2017-01-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The thermal core does not use the ability to look up pointers by ID, so convert it from using an IDR to the more space-efficient IDA. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* | | | | Merge tag 'pwm/for-4.11-rc1' of ↵Linus Torvalds2017-03-011-18/+15
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This set contains mostly fixes to existing drivers as well as cleanup of code that's not been in active use for a while" * tag 'pwm/for-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (27 commits) acpi: lpss: call pwm_add_table() for BSW PWM device pwm: Try to load modules during pwm_get() pwm: Don't hold pwm_lookup_lock longer than necessary pwm: Make the PWM_POLARITY flag in DTB optional pwm: Print error messages with pr_err() instead of pr_debug() pwm: imx: Add polarity inversion support to i.MX's PWMv2 pwm: imx: doc: Update imx-pwm.txt documentation entry pwm: imx: Remove redundant i.MX PWMv2 code pwm: imx: Provide atomic PWM support for i.MX PWMv2 pwm: imx: Move PWMv2 wait for fifo slot code to a separate function pwm: imx: Move PWMv2 software reset code to a separate function pwm: imx: Rewrite v1 code to facilitate switch to atomic PWM pwm: imx: Add separate set of PWM ops for v1 and v2 pwm: imx: Remove ipg clock and enable per clock when required pwm: lpss: Add Intel Gemini Lake PCI ID pwm: lpss: Do not export board infos for different PWM types pwm: lpss: Avoid reconfiguring while UPDATE bit is still enabled pwm: lpss: Switch to new atomic API pwm: lpss: Allow duty cycle to be 0 pwm: lpss: Avoid potential overflow of base_unit ...
| * | | | pwm: Try to load modules during pwm_get()Hans de Goede2017-01-301-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a module name string to the pwm_lookup struct and if specified try to load the module using request_module() if pwmchip_find_by_name() is unable to find the PWM chip. This is a last resort to work around drivers that can't - and can't be made to - deal with deferred probe. Signed-off-by: Hans de Goede <hdegoede@redhat.com> [thierry.reding@gmail.com: rename new macro, reword commit message] [thierry.reding@gmail.com: add comment explaining use-case] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: Remove .can_sleep from struct pwm_chipThierry Reding2017-01-041-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All PWM devices have been marked as "might sleep" since v4.5, there is no longer a need to differentiate on a per-chip basis. Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: Remove pwm_can_sleep()Thierry Reding2017-01-041-7/+0
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | The last user of this function has been removed, so it is no longer needed. Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | | | Merge tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmiLinus Torvalds2017-02-281-1/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull IPMI updates from Corey Minyard: "This is a few small fixes to the main IPMI driver, make some things const, fix typos, etc. The last patch came in about a week ago, but IMHO it's best to go in now. It is not for the main driver, it's for the bt-bmc driver, which runs on the managment controller side, not on the host side, so the scope is limited and the change is necessary" * tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmi: ipmi: bt-bmc: Use a regmap for register access char: ipmi: constify ipmi_smi_handlers structures acpi:ipmi: Make IPMI user handler const ipmi: make ipmi_usr_hndl const Documentation: Fix a typo in IPMI.txt.
| * | | | ipmi: make ipmi_usr_hndl constCorey Minyard2017-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's only function pointers. Signed-off-by: Corey Minyard <cminyard@mvista.com>
* | | | | Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds2017-02-282-148/+179
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull IDR rewrite from Matthew Wilcox: "The most significant part of the following is the patch to rewrite the IDR & IDA to be clients of the radix tree. But there's much more, including an enhancement of the IDA to be significantly more space efficient, an IDR & IDA test suite, some improvements to the IDR API (and driver changes to take advantage of those improvements), several improvements to the radix tree test suite and RCU annotations. The IDR & IDA rewrite had a good spin in linux-next and Andrew's tree for most of the last cycle. Coupled with the IDR test suite, I feel pretty confident that any remaining bugs are quite hard to hit. 0-day did a great job of watching my git tree and pointing out problems; as it hit them, I added new test-cases to be sure not to be caught the same way twice" Willy goes on to expand a bit on the IDR rewrite rationale: "The radix tree and the IDR use very similar data structures. Merging the two codebases lets us share the memory allocation pools, and results in a net deletion of 500 lines of code. It also opens up the possibility of exposing more of the features of the radix tree to users of the IDR (and I have some interesting patches along those lines waiting for 4.12) It also shrinks the size of the 'struct idr' from 40 bytes to 24 which will shrink a fair few data structures that embed an IDR" * 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax: (32 commits) radix tree test suite: Add config option for map shift idr: Add missing __rcu annotations radix-tree: Fix __rcu annotations radix-tree: Add rcu_dereference and rcu_assign_pointer calls radix tree test suite: Run iteration tests for longer radix tree test suite: Fix split/join memory leaks radix tree test suite: Fix leaks in regression2.c radix tree test suite: Fix leaky tests radix tree test suite: Enable address sanitizer radix_tree_iter_resume: Fix out of bounds error radix-tree: Store a pointer to the root in each node radix-tree: Chain preallocated nodes through ->parent radix tree test suite: Dial down verbosity with -v radix tree test suite: Introduce kmalloc_verbose idr: Return the deleted entry from idr_remove radix tree test suite: Build separate binaries for some tests ida: Use exceptional entries for small IDAs ida: Move ida_bitmap to a percpu variable Reimplement IDR and IDA using the radix tree radix-tree: Add radix_tree_iter_delete ...
| * | | | | radix-tree: Fix __rcu annotationsMatthew Wilcox2017-02-131-56/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many places were missing __rcu annotations. A few places needed a few lines of explanation about why it was safe to not use RCU accessors. Add a custom CFLAGS setting to the Makefile to ensure that new patches don't miss RCU annotations. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | radix-tree: Add rcu_dereference and rcu_assign_pointer callsMatthew Wilcox2017-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of these have been missing for many years. Others were recently introduced by me. Fortunately, we have tools that help us find such things. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | radix-tree: Store a pointer to the root in each nodeMatthew Wilcox2017-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of having this mysterious private_data in each radix_tree_node, store a pointer to the root, which can be useful for debugging. This also relieves the mm code from the duty of updating it. Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | idr: Return the deleted entry from idr_removeMatthew Wilcox2017-02-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is a relatively common idiom (8 instances) to first look up an IDR entry, and then remove it from the tree if it is found, possibly doing further operations upon the entry afterwards. If we change idr_remove() to return the removed object, all of these users can save themselves a walk of the IDR tree. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | ida: Move ida_bitmap to a percpu variableMatthew Wilcox2017-02-131-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we preload the IDA, we allocate an IDA bitmap. Instead of storing that preallocated bitmap in the IDA, we store it in a percpu variable. Generally there are more IDAs in the system than CPUs, so this cuts down on the number of preallocated bitmaps that are unused, and about half of the IDA users did not call ida_destroy() so they were leaking IDA bitmaps. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | Reimplement IDR and IDA using the radix treeMatthew Wilcox2017-02-132-84/+110
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IDR is very similar to the radix tree. It has some functionality that the radix tree did not have (alloc next free, cyclic allocation, a callback-based for_each, destroy tree), which is readily implementable on top of the radix tree. A few small changes were needed in order to use a tag to represent nodes with free space below them. More extensive changes were needed to support storing NULL as a valid entry in an IDR. Plain radix trees still interpret NULL as a not-present entry. The IDA is reimplemented as a client of the newly enhanced radix tree. As in the current implementation, it uses a bitmap at the last level of the tree. Signed-off-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | | | radix-tree: Add radix_tree_iter_deleteMatthew Wilcox2017-02-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Factor the deletion code out into __radix_tree_delete() and provide a nice iterator-based wrapper around it. If we free the node, advance the iterator to avoid reading from freed memory. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | radix-tree: Add radix_tree_iter_tag_clear()Matthew Wilcox2017-02-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The counterpart to radix_tree_iter_tag_set(), used by the IDR code Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
| * | | | | radix tree: constify some pointersMatthew Wilcox2017-01-271-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we're just getting the value of a tag, or looking up an entry, we won't modify the radix tree, so we can declare these functions as taking a const pointer. Mostly for documentation purposes, though it might help code generation. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * | | | | radix tree: Add some implicit includesMatthew Wilcox2017-01-271-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were using spinlock_t and INIT_LIST_HEAD without including spinlock.h or list.h. They were being implicitly included through some other header file, but that's fragile. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 06:25:36 +0000