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| author | Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> | 2013-07-23 15:32:41 +0400 |
|---|---|---|
| committer | Pawel Moll <pawel.moll@arm.com> | 2014-05-15 20:02:21 +0400 |
| commit | dcdea6295d3b2ec1aafd8480860f34062d2d3a93 (patch) | |
| tree | 37e3fb6bbda7d570982a6953313ab7bfee167783 /arch/arm | |
| parent | 220e2a8d22cd57d5ec8111465923c6c25691394d (diff) | |
| download | linux-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')
| -rw-r--r-- | arch/arm/mach-vexpress/platsmp.c | 31 |
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); |