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ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count

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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>
This commit is contained in:
Sudeep KarkadaNagesha 2013-07-23 12:32:41 +01:00 committed by Pawel Moll
parent 220e2a8d22
commit dcdea6295d
1 changed files with 1 additions and 30 deletions
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31
arch/arm/mach-vexpress/platsmp.c
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@ -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);