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Subject[PATCH 1/4] cpumask: cpu_coregroup_mask(): x86
Like cpu_coregroup_map, but returns a (const) pointer.

(This will go to Ingo separately as part of the x86 series, just
airing it here for thoroughness).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>
---
arch/x86/include/asm/topology.h | 1 +
arch/x86/kernel/smpboot.c | 11 ++++++++---
2 files changed, 9 insertions(+), 3 deletions(-)

diff -r 11a884ebd99b arch/x86/include/asm/topology.h
--- a/arch/x86/include/asm/topology.h Thu Nov 20 13:54:24 2008 +1030
+++ b/arch/x86/include/asm/topology.h Thu Nov 20 13:55:44 2008 +1030
@@ -231,6 +231,7 @@
#endif

extern cpumask_t cpu_coregroup_map(int cpu);
+extern const struct cpumask *cpu_coregroup_mask(int cpu);

#ifdef ENABLE_TOPO_DEFINES
#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
diff -r 11a884ebd99b arch/x86/kernel/smpboot.c
--- a/arch/x86/kernel/smpboot.c Thu Nov 20 13:54:24 2008 +1030
+++ b/arch/x86/kernel/smpboot.c Thu Nov 20 13:55:44 2008 +1030
@@ -497,7 +497,7 @@
}

/* maps the cpu to the sched domain representing multi-core */
-cpumask_t cpu_coregroup_map(int cpu)
+const struct cpumask *cpu_coregroup_mask(int cpu)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
/*
@@ -505,9 +505,14 @@
* And for power savings, we return cpu_core_map
*/
if (sched_mc_power_savings || sched_smt_power_savings)
- return per_cpu(cpu_core_map, cpu);
+ return &per_cpu(cpu_core_map, cpu);
else
- return c->llc_shared_map;
+ return &c->llc_shared_map;
+}
+
+cpumask_t cpu_coregroup_map(int cpu)
+{
+ return *cpu_coregroup_mask(cpu);
}

static void impress_friends(void)



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