Commit 22e52b07 authored by Heiko Carstens's avatar Heiko Carstens Committed by Ingo Molnar

sched: add arch_update_cpu_topology hook.

Will be called each time the scheduling domains are rebuild.
Needed for architectures that don't have a static cpu topology.
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 9aefd0ab
...@@ -50,6 +50,8 @@ ...@@ -50,6 +50,8 @@
for_each_online_node(node) \ for_each_online_node(node) \
if (nr_cpus_node(node)) if (nr_cpus_node(node))
void arch_update_cpu_topology(void);
/* Conform to ACPI 2.0 SLIT distance definitions */ /* Conform to ACPI 2.0 SLIT distance definitions */
#define LOCAL_DISTANCE 10 #define LOCAL_DISTANCE 10
#define REMOTE_DISTANCE 20 #define REMOTE_DISTANCE 20
......
...@@ -6807,6 +6807,10 @@ static int ndoms_cur; /* number of sched domains in 'doms_cur' */ ...@@ -6807,6 +6807,10 @@ static int ndoms_cur; /* number of sched domains in 'doms_cur' */
*/ */
static cpumask_t fallback_doms; static cpumask_t fallback_doms;
void __attribute__((weak)) arch_update_cpu_topology(void)
{
}
/* /*
* Set up scheduler domains and groups. Callers must hold the hotplug lock. * Set up scheduler domains and groups. Callers must hold the hotplug lock.
* For now this just excludes isolated cpus, but could be used to * For now this just excludes isolated cpus, but could be used to
...@@ -6816,6 +6820,7 @@ static int arch_init_sched_domains(const cpumask_t *cpu_map) ...@@ -6816,6 +6820,7 @@ static int arch_init_sched_domains(const cpumask_t *cpu_map)
{ {
int err; int err;
arch_update_cpu_topology();
ndoms_cur = 1; ndoms_cur = 1;
doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL); doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
if (!doms_cur) if (!doms_cur)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment