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authorSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-07-23 15:32:41 +0400
committerPawel Moll <pawel.moll@arm.com>2014-05-15 20:02:21 +0400
commitdcdea6295d3b2ec1aafd8480860f34062d2d3a93 (patch)
tree37e3fb6bbda7d570982a6953313ab7bfee167783 /arch/arm/mach-vexpress
parent220e2a8d22cd57d5ec8111465923c6c25691394d (diff)
downloadlinux-dcdea6295d3b2ec1aafd8480860f34062d2d3a93.tar.xz
ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count
arm_dt_init_cpu_maps parses the device tree, validates and sets the cpu_possible_mask appropriately. It is unnecessary to do another DT parse to get the number of cpus, use num_possible_cpus instead. This patch also removes setting cpu_present_mask as platforms should only re-initialize it in smp_prepare_cpus() if present != possible. Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r--arch/arm/mach-vexpress/platsmp.c31
1 files changed, 1 insertions, 30 deletions
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index 993c9ae5dc5e..12a875182836 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -77,39 +77,13 @@ void __init vexpress_dt_smp_map_io(void)
WARN_ON(of_scan_flat_dt(vexpress_dt_find_scu, NULL));
}
-static int __init vexpress_dt_cpus_num(unsigned long node, const char *uname,
- int depth, void *data)
-{
- static int prev_depth = -1;
- static int nr_cpus = -1;
-
- if (prev_depth > depth && nr_cpus > 0)
- return nr_cpus;
-
- if (nr_cpus < 0 && strcmp(uname, "cpus") == 0)
- nr_cpus = 0;
-
- if (nr_cpus >= 0) {
- const char *device_type = of_get_flat_dt_prop(node,
- "device_type", NULL);
-
- if (device_type && strcmp(device_type, "cpu") == 0)
- nr_cpus++;
- }
-
- prev_depth = depth;
-
- return 0;
-}
-
static void __init vexpress_dt_smp_init_cpus(void)
{
int ncores = 0, i;
switch (vexpress_dt_scu) {
case GENERIC_SCU:
- ncores = of_scan_flat_dt(vexpress_dt_cpus_num, NULL);
- break;
+ return;
case CORTEX_A9_SCU:
ncores = scu_get_core_count(vexpress_dt_cortex_a9_scu_base);
break;
@@ -133,12 +107,9 @@ static void __init vexpress_dt_smp_init_cpus(void)
static void __init vexpress_dt_smp_prepare_cpus(unsigned int max_cpus)
{
- int i;
switch (vexpress_dt_scu) {
case GENERIC_SCU:
- for (i = 0; i < max_cpus; i++)
- set_cpu_present(i, true);
break;
case CORTEX_A9_SCU:
scu_enable(vexpress_dt_cortex_a9_scu_base);