1. 17 Apr, 2009 1 commit
  2. 16 Apr, 2009 18 commits
  3. 15 Apr, 2009 21 commits
    • David Howells's avatar
      RCU: Don't try and predeclare inline funcs as it upsets some versions of gcc · 5b1d07ed
      David Howells authored
      Don't try and predeclare inline funcs like this:
      
      	static inline void wait_migrated_callbacks(void)
      	...
      	static void _rcu_barrier(enum rcu_barrier type)
      	{
      		...
      		wait_migrated_callbacks();
      	}
      	...
      	static inline void wait_migrated_callbacks(void)
      	{
      		wait_event(rcu_migrate_wq, !atomic_read(&rcu_migrate_type_count));
      	}
      
      as it upsets some versions of gcc under some circumstances:
      
      	kernel/rcupdate.c: In function `_rcu_barrier':
      	kernel/rcupdate.c:125: sorry, unimplemented: inlining failed in call to 'wait_migrated_callbacks': function body not available
      	kernel/rcupdate.c:152: sorry, unimplemented: called from here
      
      This can be dealt with by simply putting the static variables (rcu_migrate_*)
      at the top, and moving the implementation of the function up so that it
      replaces its forward declaration.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Cc: Dipankar Sarma <dipankar@in.ibm.com>
      Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      5b1d07ed
    • David Howells's avatar
      The default CONFIG_BUG=n version of BUG() should have an empty do...while · da60682c
      David Howells authored
      The default CONFIG_BUG=n version of BUG() should incorporate an empty a
      do...while statement to avoid compilation weirdness.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      da60682c
    • David Howells's avatar
      MN10300: Stop gcc from generating uninitialised variable warnings after BUG() · 616df135
      David Howells authored
      Stop gcc from generating uninitialised variable warnings after BUG().  The
      problem is that MN10300's implementation of BUG() invokes system call 15 which
      doesn't return - but there's no way to tell the compiler that and also emit the
      bug table element with the correct file and line data.
      
      So instead, we make the do...while wrapper in _debug_bug_trap() an endless loop
      from which there's no escape.
      
      Also, while we're at it, (1) get rid of _debug_bug_trap() and just implement
      directly as BUG(), and (2) make the implementation of BUG() contingent on
      CONFIG_BUG=y.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      616df135
    • David Howells's avatar
      MN10300: Wire up missing system calls · 76d320a5
      David Howells authored
      Wire up missing system calls preadv() and pwritev().
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      76d320a5
    • David Howells's avatar
      MN10300: Discard duplicate PFN_xxx() macros · 3bb4e153
      David Howells authored
      Discard duplicate PFN_xxx() macros from arch code as they're now in the
      general headers.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3bb4e153
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 · 31712eec
      Linus Torvalds authored
      * 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
        [S390] boot cputime accounting
        [S390] add read_persistent_clock
        [S390] cpu hotplug and accounting values
        [S390] fix idle time accounting
        [S390] smp: fix cpu_possible_map initialization
        [S390] dasd: fix idaw boundary checking for track based ccw
        [S390] dasd: Use the new async framework for autoonlining.
        [S390] qdio: remove dead timeout handler
        [S390] appldata: Use new mod_virt_timer_periodic() function.
        [S390] extend virtual timer interface by mod_virt_timer_periodic
        [S390] stp synchronization retry timer
        [S390] call nmi_enter/nmi_exit on machine checks
        [S390] wire up preadv/pwritev system calls
        [S390] s390: move machine flags to lowcore
      31712eec
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 · 3ee8da87
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
        ALSA: hda - Fix the cmd cache keys for amp verbs
        ALSA: add missing definitions(letters) to HD-Audio.txt
        ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
        [ALSA] intel8x0: add one retry to the ac97_clock measurement routine
        [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
        ALSA: hda - Avoid call of snd_jack_report at release
        ALSA: add private_data to struct snd_jack
        ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes
        ALSA: snd-usb-caiaq: clean up header includes
        ALSA: sound/pci: use memdup_user()
        ALSA: sound/usb: use memdup_user()
        ALSA: sound/isa: use memdup_user()
        ALSA: sound/core: use memdup_user()
        [ALSA] intel8x0: do not use zero value from PICB register
        [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable
        [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
        [ALSA] hda_intel: fix unexpected ring buffer positions
        ASoC: Disable S3C64xx support in Kconfig
        ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h
      3ee8da87
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes · a2c252eb
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
        GFS2: Use DEFINE_SPINLOCK
        GFS2: cleanup file_operations mess
        GFS2: Move umount flush rwsem
        GFS2: Fix symlink creation race
        GFS2: Make quotad's waiting interruptible
      a2c252eb
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block · 23da64b4
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.dk/linux-2.6-block: (28 commits)
        cfq-iosched: add close cooperator code
        cfq-iosched: log responsible 'cfqq' in idle timer arm
        cfq-iosched: tweak kick logic a bit more
        cfq-iosched: no need to save interrupts in cfq_kick_queue()
        brd: fix cacheflushing
        brd: support barriers
        swap: Remove code handling bio_alloc failure with __GFP_WAIT
        gfs2: Remove code handling bio_alloc failure with __GFP_WAIT
        ext4: Remove code handling bio_alloc failure with __GFP_WAIT
        dio: Remove code handling bio_alloc failure with __GFP_WAIT
        block: Remove code handling bio_alloc failure with __GFP_WAIT
        bio: add documentation to bio_alloc()
        splice: add helpers for locking pipe inode
        splice: remove generic_file_splice_write_nolock()
        ocfs2: fix i_mutex locking in ocfs2_splice_to_file()
        splice: fix i_mutex locking in generic_splice_write()
        splice: remove i_mutex locking in splice_from_pipe()
        splice: split up __splice_from_pipe()
        block: fix SG_IO to return a proper error value
        cfq-iosched: don't delay queue kick for a merged request
        ...
      23da64b4
    • Takashi Iwai's avatar
      Merge branch 'topic/hda' into for-linus · 9dd175f7
      Takashi Iwai authored
      * topic/hda:
        ALSA: hda - Fix the cmd cache keys for amp verbs
        ALSA: add missing definitions(letters) to HD-Audio.txt
      9dd175f7
    • Takashi Iwai's avatar
      ALSA: hda - Fix the cmd cache keys for amp verbs · fcad94a4
      Takashi Iwai authored
      Fix the key value generation for get/set amp verbs.  The upper bits of
      the parameter have to be combined with the verb value to be unique for
      each direction/index of amp access.
      
      This fixes the resume problem on some hardwares like Macbook after
      the channel mode is changed.
      Tested-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Cc: <stable@kernel.org>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      fcad94a4
    • Linus Torvalds's avatar
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc · a23c218b
      Linus Torvalds authored
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
        powerpc: pseries/dtl.c should include asm/firmware.h
        powerpc: Fix data-corrupting bug in __futex_atomic_op
        powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()
        powerpc: Allow 256kB pages with SHMEM
        powerpc: Document new FSL I2C bindings and cleanup
        powerpc/mm: Fix compile warning
        powerpc/85xx: TQM8548: update defconfig
        powerpc/85xx: TQM8548: use proper phy-handles for enet2 and enet3
        powerpc/85xx: TQM85xx: correct address of LM75 I2C device nodes
        powerpc: Add support for early tlbilx opcode
        powerpc: Fix tlbilx opcode
      a23c218b
    • Linus Torvalds's avatar
      acpi-cpufreq: fix 'smp_call_function_many()' confusion · ea34f43a
      Linus Torvalds authored
      It turns out that 'smp_call_function_many()' doesn't work at all like
      'smp_call_function_single()', and my change to Andrew's patch to use it
      rather than a loop over all CPU's acpi-cpufreq doesn't work.
      
      My bad.
      
      'smp_call_function_many()' has two "features" (aka "documented bugs"):
      
       (a) it needs to be called with preemption disabled, because it uses
           smp_processor_id() without guarding the CPU lookup with 'get_cpu()'
           and 'put_cpu()' like the 'single' variant does.
      
       (b) even if the current CPU is part of the CPU mask, it won't do the
           call on that CPU.
      
      Still, we're better off trying to use 'smp_call_function_many()' than
      looping over CPU's, since it at least in theory allows us to use a
      broadcast IPI and do it all in parallel.  So let's just work around the
      silly semantic bugs in that function.
      Reported-and-tested-by: default avatarAli Gholami Rudi <ali@rudi.ir>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Andrew Morton <akpm@linux-foundation.org>,
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Dave Jones <davej@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ea34f43a
    • Eric Dumazet's avatar
      packet: avoid warnings when high-order page allocation fails · 719bfeaa
      Eric Dumazet authored
      Latest tcpdump/libpcap triggers annoying messages because of high order page
      allocation failures (when lowmem exhausted or fragmented)
      
      These allocation errors are correctly handled so could be silent.
      
      [22660.208901] tcpdump: page allocation failure. order:5, mode:0xc0d0
      [22660.208921] Pid: 13866, comm: tcpdump Not tainted 2.6.30-rc2 #170
      [22660.208936] Call Trace:
      [22660.208950]  [<c04e2b46>] ? printk+0x18/0x1a
      [22660.208965]  [<c02760f7>] __alloc_pages_internal+0x357/0x460
      [22660.208980]  [<c0276251>] __get_free_pages+0x21/0x40
      [22660.208995]  [<c04cc835>] packet_set_ring+0x105/0x3d0
      [22660.209009]  [<c04ccd1d>] packet_setsockopt+0x21d/0x4d0
      [22660.209025]  [<c0270400>] ? filemap_fault+0x0/0x450
      [22660.209040]  [<c0449e34>] sys_setsockopt+0x54/0xa0
      [22660.209053]  [<c044b97f>] sys_socketcall+0xef/0x270
      [22660.209067]  [<c0202e34>] sysenter_do_call+0x12/0x26
      Signed-off-by: default avatarEric Dumazet <dada1@cosmosbay.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      719bfeaa
    • Jens Axboe's avatar
      cfq-iosched: add close cooperator code · a36e71f9
      Jens Axboe authored
      If we have processes that are working in close proximity to each
      other on disk, we don't want to idle wait. Instead allow the close
      process to issue a request, getting better aggregate bandwidth.
      The anticipatory scheduler has similar checks, noop and deadline do
      not need it since they don't care about process <-> io mappings.
      
      The code for CFQ is a little more involved though, since we split
      request queues into per-process contexts.
      
      This fixes a performance problem with eg dump(8), since it uses
      several processes in some silly attempt to speed IO up. Even if
      dump(8) isn't really a valid case (it should be fixed by using
      CLONE_IO), there are other cases where we see close processes
      and where idling ends up hurting performance.
      
      Credit goes to Jeff Moyer <jmoyer@redhat.com> for writing the
      initial implementation.
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      a36e71f9
    • Jens Axboe's avatar
      cfq-iosched: log responsible 'cfqq' in idle timer arm · 9481ffdc
      Jens Axboe authored
      Makes it easier to read the traces.
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      9481ffdc
    • Jens Axboe's avatar
      cfq-iosched: tweak kick logic a bit more · 2d870722
      Jens Axboe authored
      We only kick the dispatch for an idling queue, if we think it's a
      (somewhat) fully merged request. Also allow a kick if we have other
      busy queues in the system, since we don't want to risk waiting for
      a potential merge in that case. It's better to get some work done and
      proceed.
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      2d870722
    • Jens Axboe's avatar
      cfq-iosched: no need to save interrupts in cfq_kick_queue() · 40bb54d1
      Jens Axboe authored
      It's called from the workqueue handlers from process context, so
      we always have irqs enabled when entered.
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      40bb54d1
    • Nick Piggin's avatar
      brd: fix cacheflushing · c2572f2b
      Nick Piggin authored
      brd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the
      pagecache's responsibility to flush user virtual aliases (the driver of
      course should flush kernel virtual mappings)... but anyway, there
      already exists cache flushing for one direction of transfer, so we
      should add the other.
      Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      c2572f2b
    • Nick Piggin's avatar
      brd: support barriers · dfbc4752
      Nick Piggin authored
      brd is always ordered (not that it matters, as it is defined not to
      survive when the system goes down). So tell the block layer it is
      ordered, which might be of help with testing filesystems.
      Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      dfbc4752
    • Nikanth Karthikesan's avatar
      swap: Remove code handling bio_alloc failure with __GFP_WAIT · 297dbf50
      Nikanth Karthikesan authored
      Remove code handling bio_alloc failure with __GFP_WAIT.
      Signed-off-by: default avatarNikanth Karthikesan <knikanth@suse.de>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      297dbf50