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  1. 17 4月, 2013 6 次提交
  3. 07 3月, 2013 2 次提交
  5. 28 2月, 2013 1 次提交
  7. 23 2月, 2013 1 次提交
  9. 14 2月, 2013 7 次提交
  11. 16 1月, 2013 1 次提交
  13. 08 1月, 2013 2 次提交
    • H
      s390/irq: remove split irq fields from /proc/stat · 420f42ec
      由 Heiko Carstens 提交于 
      Now that irq sum accounting for /proc/stat's "intr" line works again we
have the oddity that the sum field (first field) contains only the sum
of the second (external irqs) and third field (I/O interrupts).
The reason for that is that these two fields are already sums of all other
fields. So if we would sum up everything we would count every interrupt
twice.
This is broken since the split interrupt accounting was merged two years
ago: 052ff461 "[S390] irq: have detailed
statistics for interrupt types".
To fix this remove the split interrupt fields from /proc/stat's "intr"
line again and only have them in /proc/interrupts.

This restores the old behaviour, seems to be the only sane fix and mimics
a behaviour from other architectures where /proc/interrupts also contains
more than /proc/stat's "intr" line does.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      420f42ec
    • H
      s390/irq: enable irq sum accounting for /proc/stat again · add9bde2
      由 Heiko Carstens 提交于 
      For more than two years, since f2c66cd8
"/proc/stat: scalability of irq num per cpu" the output of /proc/stat is
broken.
The first field in the "intr" line should contain the sum of all interrupts,
however since the above mentioned change it is always zero.

The reason for that is that a per cpu irq sum variable had been introduced
which got incremented when calling kstat_incr_irqs_this_cpu(). However
on s390 we directly incremented only the per cpu per irq counter by accessing
the array element via kstat_cpu(smp_processor_id()).irqs[...].
So fix this and use the kstat_incr_irqs_this_cpu() wrapper which increments
both: the per cpu per irq counter and the per cpu irq sum counter.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      add9bde2
  15. 11 12月, 2012 1 次提交
  17. 03 12月, 2012 1 次提交
    • S
      s390/cio: fix pgid reserved check · d99e79ec
      由 Sebastian Ott 提交于 
      The check to whom a device is reserved is done by checking the path
state of the affected channel paths. If it turns out that one path is
flagged as reserved by someone else the whole device is marked as such.

However the meaning of the RESVD_ELSE bit is that the addressed device
is reserved to a different pathgroup (and not reserved to a different
LPAR). If we do this test on a path which is currently not a member of
the pathgroup we could erroneously mark the device as reserved to
someone else.

To fix this collect the reserved state for all potential members of the
pathgroup and only mark the device as reserved if all of those potential
members have the RESVD_ELSE bit set.

Cc: stable@vger.kernel.org
Acked-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      d99e79ec
  19. 01 12月, 2012 1 次提交
  21. 23 11月, 2012 5 次提交
  23. 07 11月, 2012 2 次提交
  25. 26 10月, 2012 1 次提交
  27. 18 10月, 2012 2 次提交
  29. 26 9月, 2012 7 次提交