s390/cpum_sf: Atomically reset trailer entry fields of sample-data-blocks

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Ensure to reset the sample-data-block full indicator and the overflow counter
at the same time.  This must be done atomically because the sampling hardware
is still active while full sample-data-block is processed.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Hendrik Brueckner 2013-12-12 17:26:51 +01:00 • committed by Martin Schwidefsky

parent 69f239ed33

commit fcc77f5073

2 changed files with 17 additions and 8 deletions

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13

arch/s390/include/asm/cpu_mf.h

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12

arch/s390/kernel/perf_cpum_sf.c

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