1. 26 3月, 2008 4 次提交
  2. 13 3月, 2008 6 次提交
  3. 11 3月, 2008 3 次提交
  4. 10 3月, 2008 1 次提交
  5. 08 3月, 2008 1 次提交
  6. 07 3月, 2008 5 次提交
  7. 06 3月, 2008 3 次提交
  8. 05 3月, 2008 1 次提交
  9. 03 3月, 2008 11 次提交
  10. 29 2月, 2008 5 次提交
    • A
      [POWERPC] spufs: fix use time accounting on SPE-overcommit · 2a58aa33
      Andre Detsch 提交于
      The spu_runcntl_RW register is restored within spu_restore function.
      So, at the end of spu_bind_context, the SPU context is not just loaded,
      but running.
      
      This change corrects the state switch to account the time as USER.
      Signed-off-by: NAndre Detsch <adetsch@br.ibm.com>
      Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
      2a58aa33
    • A
      [POWERPC] spufs: serialize SLB invalidation against SLB loading · c92a1acb
      Arnd Bergmann 提交于
      There is a potential race between flushes of the entire SLB in the MFC
      and the point where new entries are being established. The problem is
      that we might put a ESID entry into the MFC SLB when the VSID entry has
      just been cleared by the global flush.
      
      This can be circumvented by holding the register_lock throughout both
      the flushing and the creation of SLB entries.
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
      c92a1acb
    • A
      [POWERPC] spufs: invalidate SLB translation before adding a new entry · cc4b7c18
      Arnd Bergmann 提交于
      When we replace an SLB entry in the MFC after using up all the available
      entries, there is a short window in which an incorrect entry is marked
      as valid.
      
      The problem is that the 'valid' bit is stored in the ESID, which is
      always written after the VSID. Overwriting the VSID first will make the
      original ESID entry point to the new VSID, which means that any
      concurrent DMA accessing the old ESID ends up being redirected to the
      new virtual address.  A few cycles later, we write the new ESID and
      everything is fine again.
      
      That race can be closed by writing a zero entry to the ESID first, which
      makes sure that the VSID is not accessed until we write the new ESID.
      
      Note that we don't actually need to invalidate the SLB entry using the
      invalidation register, which would also flush any ERAT entries for that
      segment, because the segment translation does not become invalid but is
      only removed from the SLB cache.
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
      cc4b7c18
    • A
      [POWERPC] spufs: synchronize IRQ when disabling · fae9ca79
      Arnd Bergmann 提交于
      There is a small race between the context save procedure
      and the SPU interrupt handling, where we expect all interrupt
      processing to have finished after disabling them, while
      an interrupt is still being processed on another CPU.
      
      The obvious fix is to call synchronize_irq() after disabling
      the interrupts at the start of the context save procedure
      to make sure we never access the SPU any more during an
      ongoing save or even after that.
      
      Thanks to Benjamin Herrenschmidt for pointing this out.
      Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
      fae9ca79
    • J
      [POWERPC] spufs: fix order of sputrace thread IDs · 71791bee
      Jeremy Kerr 提交于
      Currently, we get the following output from sputrace:
      
      [5.097935954] 1606: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
      [5.097958164] 1606: spufs_ps_nopfn__insert (thread = 1605, spu = 15)
      [5.097973529] 1607: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
      [5.097989174] 1607: spufs_ps_nopfn__insert (thread = 1605, spu = 14)
      
      Which leads me to believe that 160[67] is the current thread ID, and
      1605 is the context backing the psmap.
      
      However, the 'current' and 'owner' tids are reversed - the 'current'
      tid is on the right. This change puts the current thread ID in the
      left-hand column instead, and renames the right to 'ctxthread'.
      Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
      71791bee