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[S390] topology: change default

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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>
This commit is contained in:
Heiko Carstens
2010-10-25 16:10:43 +02:00
committed by Martin Schwidefsky
parent 0576fc703a
commit c9af3fa9e1
2 changed files with 4 additions and 4 deletions
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2
Documentation/kernel-parameters.txt
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@@ -2438,7 +2438,7 @@ and is between 256 and 4096 characters. It is defined in the file
topology informations if the hardware supports these. topology informations if the hardware supports these.
The scheduler will make use of these informations and The scheduler will make use of these informations and
e.g. base its process migration decisions on it. e.g. base its process migration decisions on it.
Default is off. Default is on.
tp720= [HW,PS2] tp720= [HW,PS2]

6
arch/s390/kernel/topology.c
View File

@@ -63,7 +63,7 @@ struct mask_info {
cpumask_t mask; cpumask_t mask;
}; };
static int topology_enabled; static int topology_enabled = 1;
static void topology_work_fn(struct work_struct *work); static void topology_work_fn(struct work_struct *work);
static struct tl_info *tl_info; static struct tl_info *tl_info;
static int machine_has_topology; static int machine_has_topology;
@@ -311,9 +311,9 @@ static void set_topology_timer(void)
static int __init early_parse_topology(char *p) static int __init early_parse_topology(char *p)
{ {
if (strncmp(p, "on", 2)) if (strncmp(p, "off", 3))
return 0; return 0;
topology_enabled = 1; topology_enabled = 0;
return 0; return 0;
} }
early_param("topology", early_parse_topology); early_param("topology", early_parse_topology);