From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Wed, 22 Jun 2011 14:24:09 +0000 (+0200)
Subject: [S390] hwsampler: Set a sane default sampling rate
X-Git-Tag: v3.0-rc5~29^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6815823431296082fa20c2f14007e194424660b8;p=pandora-kernel.git

[S390] hwsampler: Set a sane default sampling rate

The sampling interval for the hardware sampler is specified in cycles.
(see SA23-2260-01 The Load-Program-Parameter and the CPU-Measurement
Facilities)
The current default value will therefore result in millions of samples.
This patch changes the default sampling interval to 4M, which will
result in ~1500 samples per second on a z196 reducing the overhead
of sampling.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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