1. 17 May, 2013 6 commits
    • Tony Wu's avatar
      MIPS: Extract schedule_mfi info from __schedule · 5000653e
      Tony Wu authored
      schedule_mfi is supposed to be extracted from schedule(), and
      is used in thread_saved_pc and get_wchan.
      
      But, after optimization, schedule() is reduced to a sibling
      call to __schedule(), and no real frame info can be extracted.
      
      One solution is to compile schedule() with -fno-omit-frame-pointer
      and -fno-optimize-sibling-calls, but that will incur performance
      degradation.
      
      Another solution is to extract info from the real scheduler,
      __schedule, and this is the approache adopted here.
      
      This patch reads the __schedule address by either following
      the 'j' call in schedule if KALLSYMS is disabled or by using
      kallsyms_lookup_name to lookup __schedule if KALLSYMS is
      available, then, extracts schedule_mfi from __schedule frame info.
      
      This patch also fixes the "Can't analyze schedule() prologue"
      warning at boot time.
      Signed-off-by: default avatarTony Wu <tung7970@gmail.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/5237/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      5000653e
    • Tony Wu's avatar
      MIPS: Fix sibling call handling in get_frame_info · e7438c4b
      Tony Wu authored
      Given a function, get_frame_info() analyzes its instructions
      to figure out frame size and return address. get_frame_info()
      works as follows:
      
      1. analyze up to 128 instructions if the function size is unknown
      2. search for 'addiu/daddiu sp,sp,-immed' for frame size
      3. search for 'sw ra,offset(sp)' for return address
      4. end search when it sees jr/jal/jalr
      
      This leads to an issue when the given function is a sibling
      call, example shown as follows.
      
      801ca110 <schedule>:
      801ca110:       8f820000        lw      v0,0(gp)
      801ca114:       8c420000        lw      v0,0(v0)
      801ca118:       080726f0        j       801c9bc0 <__schedule>
      801ca11c:       00000000        nop
      
      801ca120 <io_schedule>:
      801ca120:       27bdffe8        addiu   sp,sp,-24
      801ca124:       3c028022        lui     v0,0x8022
      801ca128:       afbf0014        sw      ra,20(sp)
      
      In this case, get_frame_info() cannot properly detect schedule's
      frame info, and eventually returns io_schedule's instead.
      
      This patch adds 'j' to the end search condition to workaround
      sibling call cases.
      Signed-off-by: default avatarTony Wu <tung7970@gmail.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/5236/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      e7438c4b
    • Denis Efremov's avatar
      MIPS: MSP71xx: remove inline marking of EXPORT_SYMBOL functions · d552b233
      Denis Efremov authored
      EXPORT_SYMBOL and inline directives are contradictory to each other.
      The patch fixes this inconsistency.
      
      Found by Linux Driver Verification project (linuxtesting.org).
      Signed-off-by: default avatarDenis Efremov <yefremov.denis@gmail.com>
      Cc: linux-mips@linux-mips.org
      Cc: linux-kernel@vger.kernel.org
      Cc: trivial@kernel.org
      Cc: ldv-project@linuxtesting.org
      Patchwork: https://patchwork.linux-mips.org/patch/5227/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      d552b233
    • David Daney's avatar
      MIPS: Make virt_to_phys() work for all unmapped addresses. · 49c426ba
      David Daney authored
      As reported:
        This problem was discovered when doing BGP traffic with the TCP MD5 option
        activated, where the following call chain caused a crash:
      
         * tcp_v4_rcv
         *  tcp_v4_timewait_ack
         *   tcp_v4_send_ack -> follow stack variable rep.th
         *    tcp_v4_md5_hash_hdr
         *     tcp_md5_hash_header
         *      sg_init_one
         *       sg_set_buf
         *        virt_to_page
      
        I noticed that tcp_v4_send_reset uses a similar stack variable and
        also calls tcp_v4_md5_hash_hdr, so it has the same problem.
      
      The networking core can indirectly call virt_to_phys() on stack
      addresses, if this is done from PID 0, the stack will usually be in
      CKSEG0, so virt_to_phys() needs to work there as well
      Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
      Cc: linux-mips@linux-mips.org
      Cc: Jiang Liu <liuj97@gmail.com>
      Cc: eunb.song@samsung.com
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/5220/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      49c426ba
    • EunBong Song's avatar
      MIPS: Fix build error for crash_dump.c in 3.10-rc1 · e84ff425
      EunBong Song authored
      This patch fixes crash_dump.c build error. Build error logs are as follow.
      
      arch/mips/kernel/crash_dump.c: In function 'kdump_buf_page_init':
      arch/mips/kernel/crash_dump.c:67: error: implicit declaration of function 'kmalloc'
      arch/mips/kernel/crash_dump.c:67: error: assignment makes pointer from integer without a cast
      Signed-off-by: default avatarEunBong Song <eunb.song@samsung.com>
      Cc: linux-mips@linux-mips.org
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/5238/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      e84ff425
    • Libo Chen's avatar
      MIPS: Xway: Fix clk leak · bda97ed3
      Libo Chen authored
      When gptu_r32 fails, we should put clk before returning.
      Signed-off-by: default avatarLibo Chen <libo.chen@huawei.com>
      Acked-by: default avatarJohn Crispin <blogic@openwrt.org>
      Cc: grant.likely@linaro.org
      Cc: rob.herring@calxeda.com,
      Cc: linux-mips@linux-mips.org
      Cc: LKML linux-kernel@vger.kernel.org
      Cc: Andrew Morton akpm@linux-foundation.org
      Cc: Li Zefan lizefan@huawei.com
      Patchwork: https://patchwork.linux-mips.org/patch/5247/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      bda97ed3
  2. 16 May, 2013 2 commits
  3. 12 May, 2013 2 commits
    • Linus Torvalds's avatar
      Linux 3.10-rc1 · f722406f
      Linus Torvalds authored
      f722406f
    • Linus Torvalds's avatar
      Merge tag 'trace-fixes-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 26b840ae
      Linus Torvalds authored
      Pull tracing/kprobes update from Steven Rostedt:
       "The majority of these changes are from Masami Hiramatsu bringing
        kprobes up to par with the latest changes to ftrace (multi buffering
        and the new function probes).
      
        He also discovered and fixed some bugs in doing so.  When pulling in
        his patches, I also found a few minor bugs as well and fixed them.
      
        This also includes a compile fix for some archs that select the ring
        buffer but not tracing.
      
        I based this off of the last patch you took from me that fixed the
        merge conflict error, as that was the commit that had all the changes
        I needed for this set of changes."
      
      * tag 'trace-fixes-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing/kprobes: Support soft-mode disabling
        tracing/kprobes: Support ftrace_event_file base multibuffer
        tracing/kprobes: Pass trace_probe directly from dispatcher
        tracing/kprobes: Increment probe hit-count even if it is used by perf
        tracing/kprobes: Use bool for retprobe checker
        ftrace: Fix function probe when more than one probe is added
        ftrace: Fix the output of enabled_functions debug file
        ftrace: Fix locking in register_ftrace_function_probe()
        tracing: Add helper function trace_create_new_event() to remove duplicate code
        tracing: Modify soft-mode only if there's no other referrer
        tracing: Indicate enabled soft-mode in enable file
        tracing/kprobes: Fix to increment return event probe hit-count
        ftrace: Cleanup regex_lock and ftrace_lock around hash updating
        ftrace, kprobes: Fix a deadlock on ftrace_regex_lock
        ftrace: Have ftrace_regex_write() return either read or error
        tracing: Return error if register_ftrace_function_probe() fails for event_enable_func()
        tracing: Don't succeed if event_enable_func did not register anything
        ring-buffer: Select IRQ_WORK
      26b840ae
  4. 11 May, 2013 4 commits
    • Linus Torvalds's avatar
      Merge tag 'stable/for-linus-3.10-rc0-tag-two' of... · 607eeb0b
      Linus Torvalds authored
      Merge tag 'stable/for-linus-3.10-rc0-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
      
      Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
       - More fixes in the vCPU PVHVM hotplug path.
       - Add more documentation.
       - Fix various ARM related issues in the Xen generic drivers.
       - Updates in the xen-pciback driver per Bjorn's updates.
       - Mask the x2APIC feature for PV guests.
      
      * tag 'stable/for-linus-3.10-rc0-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
        xen/pci: Used cached MSI-X capability offset
        xen/pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
        xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST
        xen: mask x2APIC feature in PV
        xen: SWIOTLB is only used on x86
        xen/spinlock: Fix check from greater than to be also be greater or equal to.
        xen/smp/pvhvm: Don't point per_cpu(xen_vpcu, 33 and larger) to shared_info
        xen/vcpu: Document the xen_vcpu_info and xen_vcpu
        xen/vcpu/pvhvm: Fix vcpu hotplugging hanging.
      607eeb0b
    • Linus Torvalds's avatar
      Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 4c444501
      Linus Torvalds authored
      Pull second SCSI update from James "Jaj B" Bottomley:
       "This is the final round of SCSI patches for the merge window.  It
        consists mostly of driver updates (bnx2fc, ibmfc, fnic, lpfc,
        be2iscsi, pm80xx, qla4x and ipr).
      
        There's also the power management updates that complete the patches in
        Jens' tree, an iscsi refcounting problem fix from the last pull, some
        dif handling in scsi_debug fixes, a few nice code cleanups and an
        error handling busy bug fix."
      
      * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (92 commits)
        [SCSI] qla2xxx: Update firmware link in Kconfig file.
        [SCSI] iscsi class, qla4xxx: fix sess/conn refcounting when find fns are used
        [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type
        [SCSI] pm80xx: thermal, sas controller config and error handling update
        [SCSI] pm80xx: NCQ error handling changes
        [SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers
        [SCSI] pm80xx: Changed module name and debug messages update
        [SCSI] pm80xx: Firmware flash memory free fix, with addition of new memory region for it
        [SCSI] pm80xx: SPC new firmware changes for device id 0x8081 alone
        [SCSI] pm80xx: Added SPCv/ve specific hardware functionalities and relevant changes in common files
        [SCSI] pm80xx: MSI-X implementation for using 64 interrupts
        [SCSI] pm80xx: Updated common functions common for SPC and SPCv/ve
        [SCSI] pm80xx: Multiple inbound/outbound queue configuration
        [SCSI] pm80xx: Added SPCv/ve specific ids, variables and modify for SPC
        [SCSI] lpfc: fix up Kconfig dependencies
        [SCSI] Handle MLQUEUE busy response in scsi_send_eh_cmnd
        [SCSI] sd: change to auto suspend mode
        [SCSI] sd: use REQ_PM in sd's runtime suspend operation
        [SCSI] qla4xxx: Fix iocb_cnt calculation in qla4xxx_send_mbox_iocb()
        [SCSI] ufs: Correct the expected data transfersize
        ...
      4c444501
    • Linus Torvalds's avatar
      Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux · ac4e0109
      Linus Torvalds authored
      Pull idle update from Len Brown:
       "Add support for new Haswell-ULT CPU idle power states"
      
      * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
        intel_idle: initial C8, C9, C10 support
        tools/power turbostat: display C8, C9, C10 residency
      ac4e0109
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/users/eparis/audit · c4cc75c3
      Linus Torvalds authored
      Pull audit changes from Eric Paris:
       "Al used to send pull requests every couple of years but he told me to
        just start pushing them to you directly.
      
        Our touching outside of core audit code is pretty straight forward.  A
        couple of interface changes which hit net/.  A simple argument bug
        calling audit functions in namei.c and the removal of some assembly
        branch prediction code on ppc"
      
      * git://git.infradead.org/users/eparis/audit: (31 commits)
        audit: fix message spacing printing auid
        Revert "audit: move kaudit thread start from auditd registration to kaudit init"
        audit: vfs: fix audit_inode call in O_CREAT case of do_last
        audit: Make testing for a valid loginuid explicit.
        audit: fix event coverage of AUDIT_ANOM_LINK
        audit: use spin_lock in audit_receive_msg to process tty logging
        audit: do not needlessly take a lock in tty_audit_exit
        audit: do not needlessly take a spinlock in copy_signal
        audit: add an option to control logging of passwords with pam_tty_audit
        audit: use spin_lock_irqsave/restore in audit tty code
        helper for some session id stuff
        audit: use a consistent audit helper to log lsm information
        audit: push loginuid and sessionid processing down
        audit: stop pushing loginid, uid, sessionid as arguments
        audit: remove the old depricated kernel interface
        audit: make validity checking generic
        audit: allow checking the type of audit message in the user filter
        audit: fix build break when AUDIT_DEBUG == 2
        audit: remove duplicate export of audit_enabled
        Audit: do not print error when LSMs disabled
        ...
      c4cc75c3
  5. 10 May, 2013 26 commits