1. 18 11月, 2009 6 次提交
  2. 17 11月, 2009 1 次提交
  3. 13 11月, 2009 5 次提交
  4. 10 11月, 2009 7 次提交
  5. 09 11月, 2009 1 次提交
  6. 07 11月, 2009 6 次提交
  7. 06 11月, 2009 3 次提交
  8. 04 11月, 2009 8 次提交
  9. 03 11月, 2009 3 次提交
    • L
      Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 · 38dc6345
      Linus Torvalds 提交于
      * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
        PM: Remove some debug messages producing too much noise
        PM: Fix warning on suspend errors
        PM / Hibernate: Add newline to load_image() fail path
        PM / Hibernate: Fix error handling in save_image()
        PM / Hibernate: Fix blkdev refleaks
        PM / yenta: Split resume into early and late parts (rev. 4)
      38dc6345
    • I
      Correct nr_processes() when CPUs have been unplugged · 1d510750
      Ian Campbell 提交于
      nr_processes() returns the sum of the per cpu counter process_counts for
      all online CPUs. This counter is incremented for the current CPU on
      fork() and decremented for the current CPU on exit(). Since a process
      does not necessarily fork and exit on the same CPU the process_count for
      an individual CPU can be either positive or negative and effectively has
      no meaning in isolation.
      
      Therefore calculating the sum of process_counts over only the online
      CPUs omits the processes which were started or stopped on any CPU which
      has since been unplugged. Only the sum of process_counts across all
      possible CPUs has meaning.
      
      The only caller of nr_processes() is proc_root_getattr() which
      calculates the number of links to /proc as
              stat->nlink = proc_root.nlink + nr_processes();
      
      You don't have to be all that unlucky for the nr_processes() to return a
      negative value leading to a negative number of links (or rather, an
      apparently enormous number of links). If this happens then you can get
      failures where things like "ls /proc" start to fail because they got an
      -EOVERFLOW from some stat() call.
      
      Example with some debugging inserted to show what goes on:
              # ps haux|wc -l
              nr_processes: CPU0:     90
              nr_processes: CPU1:     1030
              nr_processes: CPU2:     -900
              nr_processes: CPU3:     -136
              nr_processes: TOTAL:    84
              proc_root_getattr. nlink 12 + nr_processes() 84 = 96
              84
              # echo 0 >/sys/devices/system/cpu/cpu1/online
              # ps haux|wc -l
              nr_processes: CPU0:     85
              nr_processes: CPU2:     -901
              nr_processes: CPU3:     -137
              nr_processes: TOTAL:    -953
              proc_root_getattr. nlink 12 + nr_processes() -953 = -941
              75
              # stat /proc/
              nr_processes: CPU0:     84
              nr_processes: CPU2:     -901
              nr_processes: CPU3:     -137
              nr_processes: TOTAL:    -954
              proc_root_getattr. nlink 12 + nr_processes() -954 = -942
                File: `/proc/'
                Size: 0               Blocks: 0          IO Block: 1024   directory
              Device: 3h/3d   Inode: 1           Links: 4294966354
              Access: (0555/dr-xr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
              Access: 2009-11-03 09:06:55.000000000 +0000
              Modify: 2009-11-03 09:06:55.000000000 +0000
              Change: 2009-11-03 09:06:55.000000000 +0000
      
      I'm not 100% convinced that the per_cpu regions remain valid for offline
      CPUs, although my testing suggests that they do. If not then I think the
      correct solution would be to aggregate the process_count for a given CPU
      into a global base value in cpu_down().
      
      This bug appears to pre-date the transition to git and it looks like it
      may even have been present in linux-2.6.0-test7-bk3 since it looks like
      the code Rusty patched in http://lwn.net/Articles/64773/ was already
      wrong.
      Signed-off-by: NIan Campbell <ian.campbell@citrix.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1d510750
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 1c211849
      Linus Torvalds 提交于
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: gpio-keys - use IRQF_SHARED
        Input: winbond-cir - select LEDS_TRIGGERS
        Input: i8042 - try to get stable CTR value when initializing
        Input: atkbd - add a quirk for OQO 01+ multimedia keys
      1c211849