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s390/cpum_sf: add diagnostic sampling event only if it is authorized
authorHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Mon, 9 Mar 2015 16:34:18 +0000 (17:34 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 13 Mar 2015 11:15:44 +0000 (12:15 +0100)
The SF_CYCLES_BASIC_DIAG is always registered even if it is turned of in the
current hardware configuration.  Because diagnostic-sampling is typically not
turned on in the hardware configuration, do not register this perf event by
default.  Enable it only if the diagnostic-sampling function is authorized.

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

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