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[SPARC64]: Proper multi-core scheduling support.

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The scheduling domain hierarchy is:

   all cpus -->
      cpus that share an instruction cache -->
          cpus that share an integer execution unit

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2007-06-04 17:01:39 -07:00
committed by David S. Miller
parent d887ab3a9b
commit f78eae2e6f
7 changed files with 89 additions and 5 deletions
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49
arch/sparc64/kernel/mdesc.c
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@@ -473,6 +473,53 @@ static void __init set_core_ids(void)
}
}
static void __init mark_proc_ids(struct mdesc_node *mp, int proc_id)
{
int i;
for (i = 0; i < mp->num_arcs; i++) {
struct mdesc_node *t = mp->arcs[i].arc;
const u64 *id;
if (strcmp(mp->arcs[i].name, "back"))
continue;
if (strcmp(t->name, "cpu"))
continue;
id = md_get_property(t, "id", NULL);
if (*id < NR_CPUS)
cpu_data(*id).proc_id = proc_id;
}
}
static void __init __set_proc_ids(const char *exec_unit_name)
{
struct mdesc_node *mp;
int idx;
idx = 0;
md_for_each_node_by_name(mp, exec_unit_name) {
const char *type;
int len;
type = md_get_property(mp, "type", &len);
if (!find_in_proplist(type, "int", len) &&
!find_in_proplist(type, "integer", len))
continue;
mark_proc_ids(mp, idx);
idx++;
}
}
static void __init set_proc_ids(void)
{
__set_proc_ids("exec_unit");
__set_proc_ids("exec-unit");
}
static void __init get_one_mondo_bits(const u64 *p, unsigned int *mask, unsigned char def)
{
u64 val;
@@ -574,9 +621,11 @@ static void __init mdesc_fill_in_cpu_data(void)
#endif
c->core_id = 0;
c->proc_id = -1;
}
set_core_ids();
set_proc_ids();
smp_fill_in_sib_core_maps();
}