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  1. 10 1月, 2009 3 次提交
    • P
      powerpc/perf_counter: Add support for POWER6 · f7862837
      由 Paul Mackerras 提交于 
      This adds the back-end for the PMU on the POWER6 processor.
Fortunately, the event selection hardware is somewhat simpler on
POWER6 than on other POWER family processors, so the constraints
fit into only 32 bits.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      f7862837
    • P
      powerpc/perf_counter: Add support for PPC970 family · 16b06799
      由 Paul Mackerras 提交于 
      This adds the back-end for the PMU on the PPC970 family.

The PPC970 allows events from the ISU to be selected in two different
ways.  Rather than use alternative event codes to express this, we
instead use a single encoding for ISU events and express the
resulting constraint (that you can't select events from all three
of FPU/IFU/VPU, ISU and IDU/STS at the same time, since they all come
in through only 2 multiplexers) using a NAND constraint field, and
work out which multiplexer is used for ISU events at compute_mmcr
time.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      16b06799
    • P
      powerpc/perf_counter: Add generic support for POWER-family PMU hardware · 4574910e
      由 Paul Mackerras 提交于 
      This provides the architecture-specific functions needed to access
PMU hardware on the 64-bit PowerPC processors.  It has been designed
for the IBM POWER family (POWER 4/4+/5/5+/6 and PPC970) but will
hopefully also suit other 64-bit PowerPC machines (although probably
not Cell given how different it is in this area).  This doesn't
include back-ends for any specific processors.

This implements a system which allows back-ends to express the
constraints that their hardware has on what events can be counted
simultaneously.  The constraints are expressed as a 64-bit mask +
64-bit value for each event, and the encoding is capable of
expressing the constraints arising from having a set of multiplexers
feeding an event bus, with some events being available through
multiple multiplexer settings, such as we get on POWER4 and PPC970.
Furthermore, the back-end can supply alternative event codes for
each event, and the constraint checking code will try all possible
combinations of alternative event codes to try to find a combination
that will fit.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      4574910e
  3. 09 1月, 2009 3 次提交
    • P
      powerpc: Provide a way to defer perf counter work until interrupts are enabled · 93a6d3ce
      由 Paul Mackerras 提交于 
      Because 64-bit powerpc uses lazy (soft) interrupt disabling, it is
possible for a performance monitor exception to come in when the
kernel thinks interrupts are disabled (i.e. when they are
soft-disabled but hard-enabled).  In such a situation the performance
monitor exception handler might have some processing to do (such as
process wakeups) which can't be done in what is effectively an NMI
handler.

This provides a way to defer that work until interrupts get enabled,
either in raw_local_irq_restore() or by returning from an interrupt
handler to code that had interrupts enabled.  We have a per-processor
flag that indicates that there is work pending to do when interrupts
subsequently get re-enabled.  This flag is checked in the interrupt
return path and in raw_local_irq_restore(), and if it is set,
perf_counter_do_pending() is called to do the pending work.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      93a6d3ce
    • P
      powerpc/perf_counter: Add perf_counter system call on powerpc · d662ed26
      由 Paul Mackerras 提交于 
      ... with an empty/dummy asm/perf_counter.h so it builds.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      d662ed26
    • C
      fix similar typos to successfull · 73ac36ea
      由 Coly Li 提交于 
      When I review ocfs2 code, find there are 2 typos to "successfull".  After
doing grep "successfull " in kernel tree, 22 typos found totally -- great
minds always think alike :)

This patch fixes all the similar typos. Thanks for Randy's ack and comments.
Signed-off-by: NColy Li <coyli@suse.de>
Acked-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NRoland Dreier <rolandd@cisco.com>
Cc: Jeremy Kerr <jk@ozlabs.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      73ac36ea
  5. 08 1月, 2009 34 次提交