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authorHeiko Carstens <heiko.carstens@de.ibm.com>2010-10-25 16:10:43 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-10-25 16:10:20 +0200
commitc9af3fa9e1e3e5154649991a14b74f3a2dee19ee (patch)
tree89da9bef9b676f33e7bd36318d3046e56217e844
parent0576fc703a03a43e73a57450d5720b47ec7a03ba (diff)
downloadop-kernel-dev-c9af3fa9e1e3e5154649991a14b74f3a2dee19ee.zip
op-kernel-dev-c9af3fa9e1e3e5154649991a14b74f3a2dee19ee.tar.gz
[S390] topology: change default
Switch default value of the kernel parameter 'topology' from off to on. Various performance measurements have finally shown that there are no (known) regressions anywhere. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--Documentation/kernel-parameters.txt2
-rw-r--r--arch/s390/kernel/topology.c6
2 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 0b68155..b660085 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2438,7 +2438,7 @@ and is between 256 and 4096 characters. It is defined in the file
topology informations if the hardware supports these.
The scheduler will make use of these informations and
e.g. base its process migration decisions on it.
- Default is off.
+ Default is on.
tp720= [HW,PS2]
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 13559c9..eb0bc47 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -63,7 +63,7 @@ struct mask_info {
cpumask_t mask;
};
-static int topology_enabled;
+static int topology_enabled = 1;
static void topology_work_fn(struct work_struct *work);
static struct tl_info *tl_info;
static int machine_has_topology;
@@ -311,9 +311,9 @@ static void set_topology_timer(void)
static int __init early_parse_topology(char *p)
{
- if (strncmp(p, "on", 2))
+ if (strncmp(p, "off", 3))
return 0;
- topology_enabled = 1;
+ topology_enabled = 0;
return 0;
}
early_param("topology", early_parse_topology);
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