1. 03 Apr, 2014 19 commits
    • Jan Beulich's avatar
      genksyms: fix typeof() handling · dc533240
      Jan Beulich authored
      Recent increased use of typeof() throughout the tree resulted in a
      number of symbols (25 in a typical distro config of ours) not getting a
      proper CRC calculated for them anymore, due to the parser in genksyms
      not coping with several of these uses (interestingly in the majority of
      [if not all] cases the problem is due to the use of typeof() in code
      preceding a certain export, not in the declaration/definition of the
      exported function/object itself; I wasn't able to find a way to address
      this more general parser shortcoming).
      The use of parameter_declaration is a little more relaxed than would be
      ideal (permitting not just a bare type specification, but also one with
      identifier), but since the same code is being passed through an actual
      compiler, there's no apparent risk of allowing through any broken code.
      Otoh using parameter_declaration instead of the ad hoc
      "decl_specifier_seq '*'" / "decl_specifier_seq" pair allows all types to
      be handled rather than just plain ones and pointers to plain ones.
      Signed-off-by: default avatarJan Beulich <jbeulich@suse.com>
      Cc: Michal Marek <mmarek@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      fanotify: move unrelated handling from copy_event_to_user() · d507816b
      Jan Kara authored
      Move code moving event structure to access_list from copy_event_to_user()
      to fanotify_read() where it is more logical (so that we can immediately
      see in the main loop that we either move the event to a different list
      or free it).  Also move special error handling for permission events
      from copy_event_to_user() to the main loop to have it in one place with
      error handling for normal events.  This makes copy_event_to_user()
      really only copy the event to user without any side effects.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      fanotify: reorganize loop in fanotify_read() · d8aaab4f
      Jan Kara authored
      Swap the error / "read ok" branches in the main loop of fanotify_read().
      We will grow the "read ok" part in the next patch and this makes the
      indentation easier.  Also it is more common to have error conditions
      inside an 'if' instead of the fast path.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      fanotify: convert access_mutex to spinlock · 9573f793
      Jan Kara authored
      access_mutex is used only to guard operations on access_list.  There's
      no need for sleeping within this lock so just make a spinlock out of it.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      fanotify: use fanotify event structure for permission response processing · f083441b
      Jan Kara authored
      Currently, fanotify creates new structure to track the fact that
      permission event has been reported to userspace and someone is waiting
      for a response to it.  As event structures are now completely in the
      hands of each notification framework, we can use the event structure for
      this tracking instead of allocating a new structure.
      Since this makes the event structures for normal events and permission
      events even more different and the structures have different lifetime
      rules, we split them into two separate structures (where permission
      event structure contains the structure for a normal event).  This makes
      normal events 8 bytes smaller and the code a tad bit cleaner.
      [akpm@linux-foundation.org: fix build]
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Wu Fengguang <fengguang.wu@intel.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      fanotify: remove useless bypass_perm check · 3298cf37
      Jan Kara authored
      The prepare_for_access_response() function checks whether
      group->fanotify_data.bypass_perm is set.  However this test can never be
      true because prepare_for_access_response() is called only from
      fanotify_read() which means fanotify group is alive with an active fd
      while bypass_perm is set from fanotify_release() when all file
      descriptors pointing to the group are closed and the group is going
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Fabian Frederick's avatar
      fs/freevxfs/vxfs_lookup.c: update function comment · ddae82d8
      Fabian Frederick authored
      nameidata was replaced by flags in commit 00cd8dd3 ("stop passing
      nameidata to ->lookup()").
      Signed-off-by: default avatarFabian Frederick <fabf@skynet.be>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Fabian Frederick's avatar
      fs/cifs/cifsfs.c: add __init to cifs_init_inodecache() · 9ee108b2
      Fabian Frederick authored
      cifs_init_inodecache is only called by __init init_cifs.
      Signed-off-by: default avatarFabian Frederick <fabf@skynet.be>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Li Zefan's avatar
      kmemleak: change some global variables to int · 8910ae89
      Li Zefan authored
      They don't have to be atomic_t, because they are simple boolean toggles.
      Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
      Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Li Zefan's avatar
      kmemleak: remove redundant code · 5f3bf19a
      Li Zefan authored
      Remove kmemleak_padding() and kmemleak_release().
      Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
      Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Li Zefan's avatar
      kmemleak: allow freeing internal objects after kmemleak was disabled · c89da70c
      Li Zefan authored
      Currently if kmemleak is disabled, the kmemleak objects can never be
      freed, no matter if it's disabled by a user or due to fatal errors.
      Those objects can be a big waste of memory.
        1200264 1197433  99%    0.30K  46164       26    369312K kmemleak_object
      With this patch, after kmemleak was disabled you can reclaim memory
      	# echo clear > /sys/kernel/debug/kmemleak
      Also inform users about this with a printk.
      Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
      Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Li Zefan's avatar
      kmemleak: free internal objects only if there're no leaks to be reported · dc9b3f42
      Li Zefan authored
      Currently if you stop kmemleak thread before disabling kmemleak,
      kmemleak objects will be freed and so you won't be able to check
      previously reported leaks.
      With this patch, kmemleak objects won't be freed if there're leaks that
      can be reported.
      Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
      Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Nishanth Aravamudan's avatar
      kthread: ensure locality of task_struct allocations · 81c98869
      Nishanth Aravamudan authored
      In the presence of memoryless nodes, numa_node_id() will return the
      current CPU's NUMA node, but that may not be where we expect to allocate
      from memory from.  Instead, we should rely on the fallback code in the
      memory allocator itself, by using NUMA_NO_NODE.  Also, when calling
      kthread_create_on_node(), use the nearest node with memory to the cpu in
      question, rather than the node it is running on.
      Signed-off-by: default avatarNishanth Aravamudan <nacc@linux.vnet.ibm.com>
      Reviewed-by: default avatarChristoph Lameter <cl@linux.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Anton Blanchard <anton@samba.org>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Ben Herrenschmidt <benh@kernel.crashing.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Jan Kara's avatar
      bdi: avoid oops on device removal · 5acda9d1
      Jan Kara authored
      After commit 839a8e86 ("writeback: replace custom worker pool
      implementation with unbound workqueue") when device is removed while we
      are writing to it we crash in bdi_writeback_workfn() ->
      set_worker_desc() because bdi->dev is NULL.
      This can happen because even though bdi_unregister() cancels all pending
      flushing work, nothing really prevents new ones from being queued from
      balance_dirty_pages() or other places.
      Fix the problem by clearing BDI_registered bit in bdi_unregister() and
      checking it before scheduling of any flushing work.
      Fixes: 839a8e86Reviewed-by: default avatarTejun Heo <tj@kernel.org>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Cc: Derek Basehore <dbasehore@chromium.org>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Derek Basehore's avatar
      backing_dev: fix hung task on sync · 6ca738d6
      Derek Basehore authored
      bdi_wakeup_thread_delayed() used the mod_delayed_work() function to
      schedule work to writeback dirty inodes.  The problem with this is that
      it can delay work that is scheduled for immediate execution, such as the
      work from sync_inodes_sb().  This can happen since mod_delayed_work()
      can now steal work from a work_queue.  This fixes the problem by using
      queue_delayed_work() instead.  This is a regression caused by commit
      839a8e86 ("writeback: replace custom worker pool implementation with
      unbound workqueue").
      The reason that this causes a problem is that laptop-mode will change
      the delay, dirty_writeback_centisecs, to 60000 (10 minutes) by default.
      In the case that bdi_wakeup_thread_delayed() races with
      sync_inodes_sb(), sync will be stopped for 10 minutes and trigger a hung
      task.  Even if dirty_writeback_centisecs is not long enough to cause a
      hung task, we still don't want to delay sync for that long.
      We fix the problem by using queue_delayed_work() when we want to
      schedule writeback sometime in future.  This function doesn't change the
      timer if it is already armed.
      For the same reason, we also change bdi_writeback_workfn() to
      immediately queue the work again in the case that the work_list is not
      empty.  The same problem can happen if the sync work is run on the
      rescue worker.
      [jack@suse.cz: update changelog, add comment, use bdi_wakeup_thread_delayed()]
      Signed-off-by: default avatarDerek Basehore <dbasehore@chromium.org>
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      Cc: Alexander Viro <viro@zento.linux.org.uk>
      Reviewed-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
      Cc: Derek Basehore <dbasehore@chromium.org>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Benson Leung <bleung@chromium.org>
      Cc: Sonny Rao <sonnyrao@chromium.org>
      Cc: Luigi Semenzato <semenzato@chromium.org>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Matt Fleming's avatar
      sh: fix format string bug in stack tracer · a0c32761
      Matt Fleming authored
      Kees reported the following error:
         arch/sh/kernel/dumpstack.c: In function 'print_trace_address':
         arch/sh/kernel/dumpstack.c:118:2: error: format not a string literal and no format arguments [-Werror=format-security]
      Use the "%s" format so that it's impossible to interpret 'data' as a
      format string.
      Signed-off-by: default avatarMatt Fleming <matt.fleming@intel.com>
      Reported-by: default avatarKees Cook <keescook@chromium.org>
      Acked-by: default avatarKees Cook <keescook@chromium.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 59ecc260
      Linus Torvalds authored
      Pull crypto updates from Herbert Xu:
       "Here is the crypto update for 3.15:
         - Added 3DES driver for OMAP4/AM43xx
         - Added AVX2 acceleration for SHA
         - Added hash-only AEAD algorithms in caam
         - Removed tegra driver as it is not functioning and the hardware is
           too slow
         - Allow blkcipher walks over AEAD (needed for ARM)
         - Fixed unprotected FPU/SSE access in ghash-clmulni-intel
         - Fixed highmem crash in omap-sham
         - Add (zero entropy) randomness when initialising hardware RNGs
         - Fixed unaligned ahash comletion functions
         - Added soft module depedency for crc32c for initrds that use crc32c"
      * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (60 commits)
        crypto: ghash-clmulni-intel - use C implementation for setkey()
        crypto: x86/sha1 - reduce size of the AVX2 asm implementation
        crypto: x86/sha1 - fix stack alignment of AVX2 variant
        crypto: x86/sha1 - re-enable the AVX variant
        crypto: sha - SHA1 transform x86_64 AVX2
        crypto: crypto_wq - Fix late crypto work queue initialization
        crypto: caam - add missing key_dma unmap
        crypto: caam - add support for aead null encryption
        crypto: testmgr - add aead null encryption test vectors
        crypto: export NULL algorithms defines
        crypto: caam - remove error propagation handling
        crypto: hash - Simplify the ahash_finup implementation
        crypto: hash - Pull out the functions to save/restore request
        crypto: hash - Fix the pointer voodoo in unaligned ahash
        crypto: caam - Fix first parameter to caam_init_rng
        crypto: omap-sham - Map SG pages if they are HIGHMEM before accessing
        crypto: caam - Dynamic memory allocation for caam_rng_ctx object
        crypto: allow blkcipher walks over AEAD data
        crypto: remove direct blkcipher_walk dependency on transform
        hwrng: add randomness to system from rng sources
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security · bea80318
      Linus Torvalds authored
      Pull security subsystem updates from James Morris:
       "Apart from reordering the SELinux mmap code to ensure DAC is called
        before MAC, these are minor maintenance updates"
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (23 commits)
        selinux: correctly label /proc inodes in use before the policy is loaded
        selinux: put the mmap() DAC controls before the MAC controls
        selinux: fix the output of ./scripts/get_maintainer.pl for SELinux
        evm: enable key retention service automatically
        ima: skip memory allocation for empty files
        evm: EVM does not use MD5
        ima: return d_name.name if d_path fails
        integrity: fix checkpatch errors
        ima: fix erroneous removal of security.ima xattr
        security: integrity: Use a more current logging style
        MAINTAINERS: email updates and other misc. changes
        ima: reduce memory usage when a template containing the n field is used
        ima: restore the original behavior for sending data with ima template
        Integrity: Pass commname via get_task_comm()
        fs: move i_readcount
        ima: use static const char array definitions
        security: have cap_dentry_init_security return error
        ima: new helper: file_inode(file)
        kernel: Mark function as static in kernel/seccomp.c
        capability: Use current logging styles
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next · cd6362be
      Linus Torvalds authored
      Pull networking updates from David Miller:
       "Here is my initial pull request for the networking subsystem during
        this merge window:
         1) Support for ESN in AH (RFC 4302) from Fan Du.
         2) Add full kernel doc for ethtool command structures, from Ben
         3) Add BCM7xxx PHY driver, from Florian Fainelli.
         4) Export computed TCP rate information in netlink socket dumps, from
            Eric Dumazet.
         5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
         6) Convert many drivers to pci_enable_msix_range(), from Alexander
         7) Record SKB timestamps more efficiently, from Eric Dumazet.
         8) Switch to microsecond resolution for TCP round trip times, also
            from Eric Dumazet.
         9) Clean up and fix 6lowpan fragmentation handling by making use of
            the existing inet_frag api for it's implementation.
        10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.
        11) Auto size SKB lengths when composing netlink messages based upon
            past message sizes used, from Eric Dumazet.
        12) qdisc dumps can take a long time, add a cond_resched(), From Eric
        13) Sanitize netpoll core and drivers wrt.  SKB handling semantics.
            Get rid of never-used-in-tree netpoll RX handling.  From Eric W
        14) Support inter-address-family and namespace changing in VTI tunnel
            driver(s).  From Steffen Klassert.
        15) Add Altera TSE driver, from Vince Bridgers.
        16) Optimizing csum_replace2() so that it doesn't adjust the checksum
            by checksumming the entire header, from Eric Dumazet.
        17) Expand BPF internal implementation for faster interpreting, more
            direct translations into JIT'd code, and much cleaner uses of BPF
            filtering in non-socket ocntexts.  From Daniel Borkmann and Alexei
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
        netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
        net: Add a test to see if a skb is freeable in irq context
        qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
        net: ptp: move PTP classifier in its own file
        net: sxgbe: make "core_ops" static
        net: sxgbe: fix logical vs bitwise operation
        net: sxgbe: sxgbe_mdio_register() frees the bus
        Call efx_set_channels() before efx->type->dimension_resources()
        xen-netback: disable rogue vif in kthread context
        net/mlx4: Set proper build dependancy with vxlan
        be2net: fix build dependency on VxLAN
        mac802154: make csma/cca parameters per-wpan
        mac802154: allow only one WPAN to be up at any given time
        net: filter: minor: fix kdoc in __sk_run_filter
        netlink: don't compare the nul-termination in nla_strcmp
        can: c_can: Avoid led toggling for every packet.
        can: c_can: Simplify TX interrupt cleanup
        can: c_can: Store dlc private
        can: c_can: Reduce register access
        can: c_can: Make the code readable
  2. 02 Apr, 2014 21 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid · 0f1b1e6d
      Linus Torvalds authored
      Pull HID updates from Jiri Kosina:
       - substantial cleanup of the generic and transport layers, in the
         direction of an ultimate goal of making struct hid_device completely
         transport independent, by Benjamin Tissoires
       - cp2112 driver from David Barksdale
       - a lot of fixes and new hardware support (Dualshock 4) to hid-sony
         driver, by Frank Praznik
       - support for Win 8.1 multitouch protocol by Andrew Duggan
       - other smaller fixes / device ID additions
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (75 commits)
        HID: sony: fix force feedback mismerge
        HID: sony: Set the quriks flag for Bluetooth controllers
        HID: sony: Fix Sixaxis cable state detection
        HID: uhid: Add UHID_CREATE2 + UHID_INPUT2
        HID: hyperv: fix _raw_request() prototype
        HID: hyperv: Implement a stub raw_request() entry point
        HID: hid-sensor-hub: fix sleeping function called from invalid context
        HID: multitouch: add support for Win 8.1 multitouch touchpads
        HID: remove hid_output_raw_report transport implementations
        HID: sony: do not rely on hid_output_raw_report
        HID: cp2112: remove the last hid_output_raw_report() call
        HID: cp2112: remove various hid_out_raw_report calls
        HID: multitouch: add support of other generic collections in hid-mt
        HID: multitouch: remove pen special handling
        HID: multitouch: remove registered devices with default behavior
        HID: hidp: Add a comment that some devices depend on the current behavior of uniq
        HID: sony: Prevent duplicate controller connections.
        HID: sony: Perform a boundry check on the sixaxis battery level index.
        HID: sony: Fix work queue issues
        HID: sony: Fix multi-line comment styling
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial · 159d8133
      Linus Torvalds authored
      Pull trivial tree updates from Jiri Kosina:
       "Usual rocket science -- mostly documentation and comment updates"
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
        sparse: fix comment
        doc: fix double words
        isdn: capi: fix "CAPI_VERSION" comment
        doc: DocBook: Fix typos in xml and template file
        Bluetooth: add module name for btwilink
        driver core: unexport static function create_syslog_header
        mmc: core: typo fix in printk specifier
        ARM: spear: clean up editing mistake
        net-sysfs: fix comment typo 'CONFIG_SYFS'
        doc: Insert MODULE_ in module-signing macros
        Documentation: update URL to hfsplus Technote 1150
        gpio: update path to documentation
        ixgbe: Fix format string in ixgbe_fcoe.
        Kconfig: Remove useless "default N" lines
        user_namespace.c: Remove duplicated word in comment
        CREDITS: fix formatting
        treewide: Fix typo in Documentation/DocBook
        mm: Fix warning on make htmldocs caused by slab.c
        ata: ata-samsung_cf: cleanup in header file
        idr: remove unused prototype of idr_free()
    • Linus Torvalds's avatar
      Merge branch 'sched-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 05bf58ca
      Linus Torvalds authored
      Pull sched/idle changes from Ingo Molnar:
       "More idle code reorganization, to prepare for more integration.
        (Sent separately because it depended on pending timer work, which is
        now upstream)"
      * 'sched-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/idle: Add more comments to the code
        sched/idle: Move idle conditions in cpuidle_idle main function
        sched/idle: Reorganize the idle loop
        cpuidle/idle: Move the cpuidle_idle_call function to idle.c
        idle/cpuidle: Split cpuidle_idle_call main function into smaller functions
    • Oleg Nesterov's avatar
      pid_namespace: pidns_get() should check task_active_pid_ns() != NULL · d2308225
      Oleg Nesterov authored
      pidns_get()->get_pid_ns() can hit ns == NULL. This task_struct can't
      go away, but task_active_pid_ns(task) is NULL if release_task(task)
      was already called. Alternatively we could change get_pid_ns(ns) to
      check ns != NULL, but it seems that other callers are fine.
      Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
      Cc: Eric W. Biederman ebiederm@xmission.com>
      Cc: stable@kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Linus Torvalds's avatar
      Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 7cbb39d4
      Linus Torvalds authored
      Pull kvm updates from Paolo Bonzini:
       "PPC and ARM do not have much going on this time.  Most of the cool
        stuff, instead, is in s390 and (after a few releases) x86.
        ARM has some caching fixes and PPC has transactional memory support in
        guests.  MIPS has some fixes, with more probably coming in 3.16 as
        QEMU will soon get support for MIPS KVM.
        For x86 there are optimizations for debug registers, which trigger on
        some Windows games, and other important fixes for Windows guests.  We
        now expose to the guest Broadwell instruction set extensions and also
        Intel MPX.  There's also a fix/workaround for OS X guests, nested
        virtualization features (preemption timer), and a couple kvmclock
        For s390, the main news is asynchronous page faults, together with
        improvements to IRQs (floating irqs and adapter irqs) that speed up
        virtio devices"
      * tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (96 commits)
        KVM: PPC: Book3S HV: Save/restore host PMU registers that are new in POWER8
        KVM: PPC: Book3S HV: Fix decrementer timeouts with non-zero TB offset
        KVM: PPC: Book3S HV: Don't use kvm_memslots() in real mode
        KVM: PPC: Book3S HV: Return ENODEV error rather than EIO
        KVM: PPC: Book3S: Trim top 4 bits of physical address in RTAS code
        KVM: PPC: Book3S HV: Add get/set_one_reg for new TM state
        KVM: PPC: Book3S HV: Add transactional memory support
        KVM: Specify byte order for KVM_EXIT_MMIO
        KVM: vmx: fix MPX detection
        KVM: PPC: Book3S HV: Fix KVM hang with CONFIG_KVM_XICS=n
        KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE
        KVM: PPC: Book3S HV: Fix incorrect userspace exit on ioeventfd write
        KVM: s390: clear local interrupts at cpu initial reset
        KVM: s390: Fix possible memory leak in SIGP functions
        KVM: s390: fix calculation of idle_mask array size
        KVM: s390: randomize sca address
        KVM: ioapic: reinject pending interrupts on KVM_SET_IRQCHIP
        KVM: Bump KVM_MAX_IRQ_ROUTES for s390
        KVM: s390: irq routing for adapter interrupts.
        KVM: s390: adapter interrupt sources
    • Linus Torvalds's avatar
      Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux · 64056a94
      Linus Torvalds authored
      Pull virtio updates from Rusty Russell:
       "Nothing exciting: virtio-blk users might see a bit of a boost from the
        doubling of the default queue length though"
      * tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
        virtio-blk: base queue-depth on virtqueue ringsize or module param
        Revert a02bbb1c: MAINTAINERS: add virtio-dev ML for virtio
        virtio: fail adding buffer on broken queues.
        virtio-rng: don't crash if virtqueue is broken.
        virtio_balloon: don't crash if virtqueue is broken.
        virtio_blk: don't crash, report error if virtqueue is broken.
        virtio_net: don't crash if virtqueue is broken.
        virtio_balloon: don't softlockup on huge balloon changes.
        virtio: Use pci_enable_msix_exact() instead of pci_enable_msix()
        MAINTAINERS: virtio-dev is subscribers only
        tools/virtio: add a missing )
        tools/virtio: fix missing kmemleak_ignore symbol
        tools/virtio: update internal copies of headers
    • Linus Torvalds's avatar
      Merge branch 'for-3.15' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping · 7474043e
      Linus Torvalds authored
      Pull DMA-mapping updates from Marek Szyprowski:
       "This contains extension for more efficient handling of io address
        space for dma-mapping subsystem for ARM architecture"
      * 'for-3.15' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
        arm: dma-mapping: remove order parameter from arm_iommu_create_mapping()
        arm: dma-mapping: Add support to extend DMA IOMMU mappings
    • Linus Torvalds's avatar
      Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux · b9f2b21a
      Linus Torvalds authored
      Pull devicetree changes from Grant Likely:
       "Updates to devicetree core code.  This branch contains the following
        notable changes:
         - add reserved memory binding
         - make struct device_node a kobject and remove legacy
         - ePAPR conformance fixes
         - update in-kernel DTC copy to version v1.4.0
         - preparatory changes for dynamic device tree overlays
         - minor bug fixes and documentation changes
        The most significant change in this branch is the conversion of struct
        device_node to be a kobject that is exposed via sysfs and removal of
        the old /proc/device-tree code.  This simplifies the device tree
        handling code and tightens up the lifecycle on device tree nodes.
        [updated: added fix for dangling select PROC_DEVICETREE]"
      * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (29 commits)
        dt: Remove dangling "select PROC_DEVICETREE"
        of: Add support for ePAPR "stdout-path" property
        of: device_node kobject lifecycle fixes
        of: only scan for reserved mem when fdt present
        powerpc: add support for reserved memory defined by device tree
        arm64: add support for reserved memory defined by device tree
        of: add missing major vendors
        of: add vendor prefix for SMSC
        of: remove /proc/device-tree
        of/selftest: Add self tests for manipulation of properties
        of: Make device nodes kobjects so they show up in sysfs
        arm: add support for reserved memory defined by device tree
        drivers: of: add support for custom reserved memory drivers
        drivers: of: add initialization code for dynamic reserved memory
        drivers: of: add initialization code for static reserved memory
        of: document bindings for reserved-memory nodes
        Revert "of: fix of_update_property()"
        kbuild: dtbs_install: new make target
        ARM: mvebu: Allows to get the SoC ID even without PCI enabled
        of: Allows to use the PCI translator without the PCI core
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 70f6c087
      Linus Torvalds authored
      Pull more ACPI and power management updates from Rafael Wysocki:
       "These are commits that were not quite ready when I sent the original
        pull request for 3.15-rc1 several days ago, but they have spent some
        time in linux-next since then and appear to be good to go.  All of
        them are fixes and cleanups.
         - Remaining changes from upstream ACPICA release 20140214 that
           introduce code to automatically serialize the execution of methods
           creating any named objects which really cannot be executed in
           parallel with each other anyway (previously ACPICA attempted to
           address that by aborting methods upon conflict detection, but that
           wasn't reliable enough and led to other issues).  From Bob Moore
           and Lv Zheng.
         - intel_pstate fix to use del_timer_sync() instead of del_timer() in
           the exit path before freeing the timer structure from Dirk
           Brandewie (original patch from Thomas Gleixner).
         - cpufreq fix related to system resume from Viresh Kumar.
         - Serialization of frequency transitions in cpufreq that involve
           PRECHANGE and POSTCHANGE notifications to avoid ordering issues
           resulting from race conditions.  From Srivatsa S Bhat and Viresh
         - Revert of an ACPI processor driver change that was based on a
           specific interpretation of the ACPI spec which may not be correct
           (the relevant part of the spec appears to be incomplete).  From
           Hanjun Guo.
         - Runtime PM core cleanups and documentation updates from Geert
         - PNP core cleanup from Michael Opdenacker"
      * tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: Make cpufreq_notify_transition & cpufreq_notify_post_transition static
        cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}
        cpufreq: Make sure frequency transitions are serialized
        intel_pstate: Use del_timer_sync in intel_pstate_cpu_stop
        cpufreq: resume drivers before enabling governors
        PM / Runtime: Spelling s/competing/completing/
        PM / Runtime: s/foo_process_requests/foo_process_next_request/
        PM / Runtime: GENERIC_SUBSYS_PM_OPS is gone
        PM / Runtime: Correct documented return values for generic PM callbacks
        PM / Runtime: Split line longer than 80 characters
        PM / Runtime: dev_pm_info.runtime_error is signed
        Revert "ACPI / processor: Make it possible to get APIC ID via GIC"
        ACPICA: Enable auto-serialization as a default kernel behavior.
        ACPICA: Ignore sync_level for methods that have been auto-serialized.
        ACPICA: Add additional named objects for the auto-serialize method scan.
        ACPICA: Add auto-serialization support for ill-behaved control methods.
        ACPICA: Remove global option to serialize all control methods.
        PNP: remove deprecated IRQF_DISABLED
    • Linus Torvalds's avatar
      Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · e6d9bfc6
      Linus Torvalds authored
      Pull powerpc non-virtualized cpuidle from Ben Herrenschmidt:
       "This is the branch I mentioned in my other pull request which contains
        our improved cpuidle support for the "powernv" platform
        It adds support for the "fast sleep" feature of the processor which
        provides higher power savings than our usual "nap" mode but at the
        cost of losing the timers while asleep, and thus exploits the new
        timer broadcast framework to work around that limitation.
        It's based on a tip timer tree that you seem to have already merged"
      * 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
        cpuidle/powernv: Parse device tree to setup idle states
        cpuidle/powernv: Add "Fast-Sleep" CPU idle state
        powerpc/powernv: Add OPAL call to resync timebase on wakeup
        powerpc/powernv: Add context management for Fast Sleep
        powerpc: Split timer_interrupt() into timer handling and interrupt handling routines
        powerpc: Implement tick broadcast IPI as a fixed IPI message
        powerpc: Free up the slot of PPC_MSG_CALL_FUNC_SINGLE IPI message
    • Linus Torvalds's avatar
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · 235c7b9f
      Linus Torvalds authored
      Pull main powerpc updates from Ben Herrenschmidt:
       "This time around, the powerpc merges are going to be a little bit more
        complicated than usual.
        This is the main pull request with most of the work for this merge
        window.  I will describe it a bit more further down.
        There is some additional cpuidle driver work, however I haven't
        included it in this tree as it depends on some work in tip/timer-core
        which Thomas accidentally forgot to put in a topic branch.  Since I
        didn't want to carry all of that tip timer stuff in powerpc -next, I
        setup a separate branch on top of Thomas tree with just that cpuidle
        driver in it, and Stephen has been carrying that in next separately
        for a while now.  I'll send a separate pull request for it.
        Additionally, two new pieces in this tree add users for a sysfs API
        that Tejun and Greg have been deprecating in drivers-core-next.
        Thankfully Greg reverted the patch that removes the old API so this
        merge can happen cleanly, but once merged, I will send a patch
        adjusting our new code to the new API so that Greg can send you the
        removal patch.
        Now as for the content of this branch, we have a lot of perf work for
        power8 new counters including support for our new "nest" counters
        (also called 24x7) under pHyp (not natively yet).
        We have new functionality when running under the OPAL firmware
        (non-virtualized or KVM host), such as access to the firmware error
        logs and service processor dumps, system parameters and sensors, along
        with a hwmon driver for the latter.
        There's also a bunch of bug fixes accross the board, some LE fixes,
        and a nice set of selftests for validating our various types of copy
        On the Freescale side, we see mostly new chip/board revisions, some
        clock updates, better support for machine checks and debug exceptions,
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (70 commits)
        powerpc/book3s: Fix CFAR clobbering issue in machine check handler.
        powerpc/compat: 32-bit little endian machine name is ppcle, not ppc
        powerpc/le: Big endian arguments for ppc_rtas()
        powerpc: Use default set of netfilter modules (CONFIG_NETFILTER_ADVANCED=n)
        powerpc/defconfigs: Enable THP in pseries defconfig
        powerpc/mm: Make sure a local_irq_disable prevent a parallel THP split
        powerpc: Rate-limit users spamming kernel log buffer
        powerpc/perf: Fix handling of L3 events with bank == 1
        powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes
        powerpc/perf: Add kconfig option for hypervisor provided counters
        powerpc/perf: Add support for the hv 24x7 interface
        powerpc/perf: Add support for the hv gpci (get performance counter info) interface
        powerpc/perf: Add macros for defining event fields & formats
        powerpc/perf: Add a shared interface to get gpci version and capabilities
        powerpc/perf: Add 24x7 interface headers
        powerpc/perf: Add hv_gpci interface header
        powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info)
        sysfs: create bin_attributes under the requested group
        powerpc/perf: Enable BHRB access for EBB events
        powerpc/perf: Add BHRB constraint and IFM MMCRA handling for EBB
    • Linus Torvalds's avatar
      Merge branch 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr · bdfc7cbd
      Linus Torvalds authored
      Pull MIPS updates from Ralf Baechle:
       - Support for Imgtec's Aptiv family of MIPS cores.
       - Improved detection of BCM47xx configurations.
       - Fix hiberation for certain configurations.
       - Add support for the Chinese Loongson 3 CPU, a MIPS64 R2 core and
       - Detection and support for the MIPS P5600 core.
       - A few more random fixes that didn't make 3.14.
       - Support for the EVA Extended Virtual Addressing
       - Switch Alchemy to the platform PATA driver
       - Complete unification of Alchemy support
       - Allow availability of I/O cache coherency to be runtime detected
       - Improvments to multiprocessing support for Imgtec platforms
       - A few microoptimizations
       - Cleanups of FPU support
       - Paul Gortmaker's fixes for the init stuff
       - Support for seccomp
      * 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr: (165 commits)
        MIPS: CPC: Use __raw_ memory access functions
        MIPS: CM: use __raw_ memory access functions
        MIPS: Fix warning when including smp-ops.h with CONFIG_SMP=n
        MIPS: Malta: GIC IPIs may be used without MT
        MIPS: smp-mt: Use common GIC IPI implementation
        MIPS: smp-cmp: Remove incorrect core number probe
        MIPS: Fix gigaton of warning building with microMIPS.
        MIPS: Fix core number detection for MT cores
        MIPS: MT: core_nvpes function to retrieve VPE count
        MIPS: Provide empty mips_mt_set_cpuoptions when CONFIG_MIPS_MT=n
        MIPS: Lasat: Replace del_timer by del_timer_sync
        MIPS: Malta: Setup PM I/O region on boot
        MIPS: Loongson: Add a Loongson-3 default config file
        MIPS: Loongson 3: Add CPU hotplug support
        MIPS: Loongson 3: Add Loongson-3 SMP support
        MIPS: Loongson: Add Loongson-3 Kconfig options
        MIPS: Loongson: Add swiotlb to support All-Memory DMA
        MIPS: Loongson 3: Add serial port support
        MIPS: Loongson 3: Add IRQ init and dispatch support
        MIPS: Loongson 3: Add HT-linked PCI support
    • Josh Boyer's avatar
      arm64: Fix duplicated Kconfig entries again · 62d1a3ba
      Josh Boyer authored
      Commit 74397174 attempted to clean up the power management options
      for arm64, but when things were merged it didn't fully take effect.  Fix
      it again.
      Signed-off-by: default avatarJosh Boyer <jwboyer@fedoraproject.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Linus Torvalds's avatar
      Merge branch 'x86-nuke-platforms-for-linus' of... · 467cbd20
      Linus Torvalds authored
      Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
      Pull x86 old platform removal from Peter Anvin:
       "This patchset removes support for several completely obsolete
        platforms, where the maintainers either have completely vanished or
        acked the removal.  For some of them it is questionable if there even
        exists functional specimens of the hardware"
      Geert Uytterhoeven apparently thought this was a April Fool's pull request ;)
      * 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, platforms: Remove NUMAQ
        x86, platforms: Remove SGI Visual Workstation
        x86, apic: Remove support for IBM Summit/EXA chipset
        x86, apic: Remove support for ia32-based Unisys ES7000
    • Linus Torvalds's avatar
      Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7125764c
      Linus Torvalds authored
      Pull compat time conversion changes from Peter Anvin:
       "Despite the branch name this is really neither an x86 nor an
        x32-specific patchset, although it the implementation of the
        discussions that followed the x32 security hole a few months ago.
        This removes get/put_compat_timespec/val() and replaces them with
        compat_get/put_timespec/val() which are savvy as to the current status
        of COMPAT_USE_64BIT_TIME.
        It removes several unused and/or incorrect/misleading functions (like
        compat_put_timeval_convert which doesn't in fact do any conversion)
        and also replaces several open-coded implementations what is now
        called compat_convert_timespec() with that function"
      * 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        compat: Fix sparse address space warnings
        compat: Get rid of (get|put)_compat_time(val|spec)
    • Linus Torvalds's avatar
      Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · c6f21243
      Linus Torvalds authored
      Pull x86 vdso changes from Peter Anvin:
       "This is the revamp of the 32-bit vdso and the associated cleanups.
        This adds timekeeping support to the 32-bit vdso that we already have
        in the 64-bit vdso.  Although 32-bit x86 is legacy, it is likely to
        remain in the embedded space for a very long time to come.
        This removes the traditional COMPAT_VDSO support; the configuration
        variable is reused for simply removing the 32-bit vdso, which will
        produce correct results but obviously suffer a performance penalty.
        Only one beta version of glibc was affected, but that version was
        unfortunately included in one OpenSUSE release.
        This is not the end of the vdso cleanups.  Stefani and Andy have
        agreed to continue work for the next kernel cycle; in fact Andy has
        already produced another set of cleanups that came too late for this
        An incidental, but arguably important, change is that this ensures
        that unused space in the VVAR page is properly zeroed.  It wasn't
        before, and would contain whatever garbage was left in memory by BIOS
        or the bootloader.  Since the VVAR page is accessible to user space
        this had the potential of information leaks"
      * 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
        x86, vdso: Fix the symbol versions on the 32-bit vDSO
        x86, vdso, build: Don't rebuild 32-bit vdsos on every make
        x86, vdso: Actually discard the .discard sections
        x86, vdso: Fix size of get_unmapped_area()
        x86, vdso: Finish removing VDSO32_PRELINK
        x86, vdso: Move more vdso definitions into vdso.h
        x86: Load the 32-bit vdso in place, just like the 64-bit vdsos
        x86, vdso32: handle 32 bit vDSO larger one page
        x86, vdso32: Disable stack protector, adjust optimizations
        x86, vdso: Zero-pad the VVAR page
        x86, vdso: Add 32 bit VDSO time support for 64 bit kernel
        x86, vdso: Add 32 bit VDSO time support for 32 bit kernel
        x86, vdso: Patch alternatives in the 32-bit VDSO
        x86, vdso: Introduce VVAR marco for vdso32
        x86, vdso: Cleanup __vdso_gettimeofday()
        x86, vdso: Replace VVAR(vsyscall_gtod_data) by gtod macro
        x86, vdso: __vdso_clock_gettime() cleanup
        x86, vdso: Revamp vclock_gettime.c
        mm: Add new func _install_special_mapping() to mmap.c
        x86, vdso: Make vsyscall_gtod_data handling x86 generic
    • Linus Torvalds's avatar
      Merge branch 'x86/boot' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9447dc43
      Linus Torvalds authored
      Pull x86 boot changes from Peter Anvin:
       "This patchset is a set of cleanups aiming at librarize some of the
        common code from the boot environments.  We currently have three
        different "little environments" (boot, boot/compressed, and
        realmode/rm) in x86, and we are likely to soon get a fourth one
        (kexec/purgatory, which will have to be integrated in the kernel to
        support secure kexec).  This is primarily a cleanup in the
        anticipation of the latter.
        While Vivek implemented this, he ran into some bugs, in particular the
        memcmp implementation for when gcc punts from using the builtin would
        have a misnamed symbol, causing compilation errors if we were ever
        unlucky enough that gcc didn't want to inline the test"
      * 'x86/boot' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, boot: Move memset() definition in compressed/string.c
        x86, boot: Move memcmp() into string.h and string.c
        x86, boot: Move optimized memcpy() 32/64 bit versions to compressed/string.c
        x86, boot: Create a separate string.h file to provide standard string functions
        x86, boot: Undef memcmp before providing a new definition
    • Linus Torvalds's avatar
      Merge tag 'metag-for-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag · bb1775c9
      Linus Torvalds authored
      Pull Metag architecture changes from James Hogan:
       - Remove unused NUMA definition (SD_NODE_INIT)
       - Refactor signal code to use struct ksignal
       - IRQ migration cleanup to use irq_set_affinity
       - Clean up main Kconfig file a little
      * tag 'metag-for-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
        sched: remove unused SCHED_INIT_NODE
        metag: Use get_signal() signal_setup_done()
        metag: Fix METAG Kconfig symbol select ordering
        metag: Use irq_set_affinity instead of homebrewn code
    • Steven Rostedt (Red Hat)'s avatar
      x86: Fix dumpstack_64 irq stack handling · 63c95654
      Steven Rostedt (Red Hat) authored
      Commit 2223f6f6 "x86: Clean up dumpstack_64.c code" changed
      the irq_stack processing a little from what it was before.
      The irq_stack_end variable needed to be cleared after its first
      use. By setting irq_stack to the per cpu irq_stack and passing
      that to analyze_stack(), and then clearing it after it is processed,
      we can get back the original behavior.
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Steven Rostedt (Red Hat)'s avatar
      x86: Fix dumpstack_64 to keep state of "used" variable in loop · 1aabc599
      Steven Rostedt (Red Hat) authored
      Commit 2223f6f6 "x86: Clean up dumpstack_64.c code" moved the used
      variable to a local within the loop, but the in_exception_stack()
      depended on being non-volatile with the ability to change it.
      By always re-initializing the "used" variable to zero, it would cause
      the in_exception_stack() to return the same thing each time, and
      cause the dump_stack loop to go into an infinite loop.
      Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Li Zhong's avatar
      sparse: fix comment · c800bcd5
      Li Zhong authored
      retmain -> remain
      Signed-off-by: default avatarLi Zhong <zhong@linux.vnet.ibm.com>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>