1. 22 5月, 2012 3 次提交
  2. 16 5月, 2012 12 次提交
  3. 14 5月, 2012 8 次提交
  4. 12 5月, 2012 3 次提交
    • B
      powerpc/irq: Fix another case of lazy IRQ state getting out of sync · 7c0482e3
      Benjamin Herrenschmidt 提交于
      So we have another case of paca->irq_happened getting out of
      sync with the HW irq state. This can happen when a perfmon
      interrupt occurs while soft disabled, as it will return to a
      soft disabled but hard enabled context while leaving a stale
      PACA_IRQ_HARD_DIS flag set.
      
      This patch fixes it, and also adds a test for the condition
      of those flags being out of sync in arch_local_irq_restore()
      when CONFIG_TRACE_IRQFLAGS is enabled.
      
      This helps catching those gremlins faster (and so far I
      can't seem see any anymore, so that's good news).
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      7c0482e3
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu · 4e25651b
      Linus Torvalds 提交于
      Pull a m68knommu fix from Greg Ungerer:
       "It contains a single fix for including the ColdFire QSPI interface
        setup code when enabled as a module.  This was broken in the
        consolidation of the ColdFire SoC device tables in the 3.4 merge
        window."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
        m68knommu: enable qspi support when SPI_COLDFIRE_QSPI = m
      4e25651b
    • H
      mm: raise MemFree by reverting percpu_pagelist_fraction to 0 · 1b76b02f
      Hugh Dickins 提交于
      Why is there less MemFree than there used to be?  It perturbed a test,
      so I've just been bisecting linux-next, and now find the offender went
      upstream yesterday.
      
      Commit 93278814 "mm: fix division by 0 in percpu_pagelist_fraction()"
      mistakenly initialized percpu_pagelist_fraction to the sysctl's minimum 8,
      which leaves 1/8th of memory on percpu lists (on each cpu??); but most of
      us expect it to be left unset at 0 (and it's not then used as a divisor).
      
        MemTotal: 8061476kB  8061476kB  8061476kB  8061476kB  8061476kB  8061476kB
        Repetitive test with percpu_pagelist_fraction 8:
        MemFree:  6948420kB  6237172kB  6949696kB  6840692kB  6949048kB  6862984kB
        Same test with percpu_pagelist_fraction back to 0:
        MemFree:  7945000kB  7944908kB  7948568kB  7949060kB  7948796kB  7948812kB
      Signed-off-by: NHugh Dickins <hughd@google.com>
      [ We really should fix the crazy sysctl interface too, but that's a
        separate thing - Linus ]
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1b76b02f
  5. 11 5月, 2012 14 次提交