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  1. 10 9月, 2009 8 次提交
  3. 06 9月, 2009 1 次提交
  5. 03 9月, 2009 1 次提交
  7. 27 8月, 2009 2 次提交
  9. 10 8月, 2009 1 次提交
  11. 09 8月, 2009 1 次提交
    • P
      perf_counter/powerpc: Fix oops on cpus without perf_counter hardware support · f36a1a13
      由 Paul Mackerras 提交于 
      If we have the powerpc perf_counter backend compiled in, but
the cpu we are running on is one where we don't support the
PMU, we currently oops in hw_perf_group_sched_in if we try to
use any counters, because ppmu is NULL in that case, and we
unconditionally dereference ppmu.

This fixes the problem by adding a check if ppmu is NULL at the
beginning of hw_perf_group_sched_in, and also at the beginning
of the other functions that get called from the perf_counter
core, i.e. hw_perf_disable, hw_perf_enable, and
hw_perf_counter_setup.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: benh@kernel.crashing.org
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      f36a1a13
  13. 06 8月, 2009 1 次提交
  15. 05 8月, 2009 1 次提交
  17. 30 7月, 2009 7 次提交
  19. 28 7月, 2009 1 次提交
    • B
      mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() · 9e1b32ca
      由 Benjamin Herrenschmidt 提交于 
      mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()

Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.

Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.

The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: NNick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9e1b32ca
  21. 15 7月, 2009 2 次提交
  23. 13 7月, 2009 1 次提交
  25. 11 7月, 2009 1 次提交
  27. 08 7月, 2009 11 次提交
  29. 05 7月, 2009 1 次提交