s390/perf_events: compile only for CONFIG_64BIT

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The whole hardware support is only available in zArch mode.
Fixes also this compile warning:

arch/s390/kernel/perf_cpum_cf.c: In function ‘cpumf_pmu_init’:
arch/s390/kernel/perf_cpum_cf.c:670:2: warning: left shift count >= width of type [enabled by default]

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2012-09-14 12:57:39 +02:00 • committed by Martin Schwidefsky

parent 0e37b0cbb8

commit 305e4f108b

1 changed files with 4 additions and 1 deletions

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arch/s390/kernel/Makefile

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