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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-01-06 22:32:52 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-01-06 22:32:52 +0000
commit4073723acb9cdcdbe4df9c0e0c376c65d1697e43 (patch)
treef41c17eac157b1223ce104845cf9b1e5a9e6a83d /arch/arm/mach-tegra/platsmp.c
parent58daf18cdcab550262a5f4681e1f1e073e21965a (diff)
parent4ec3eb13634529c0bc7466658d84d0bbe3244aea (diff)
Merge branch 'misc' into devel
Conflicts: arch/arm/Kconfig arch/arm/common/Makefile arch/arm/kernel/Makefile arch/arm/kernel/smp.c
Diffstat (limited to 'arch/arm/mach-tegra/platsmp.c')
-rw-r--r--arch/arm/mach-tegra/platsmp.c33
1 files changed, 8 insertions, 25 deletions
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 3b7376c4f356..ec1f68924edf 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -22,7 +22,6 @@
#include <asm/cacheflush.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
-#include <asm/localtimer.h>
#include <asm/smp_scu.h>
#include <mach/iomap.h>
@@ -41,8 +40,6 @@ static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE);
void __cpuinit platform_secondary_init(unsigned int cpu)
{
- trace_hardirqs_off();
-
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
@@ -117,24 +114,20 @@ void __init smp_init_cpus(void)
{
unsigned int i, ncores = scu_get_core_count(scu_base);
+ if (ncores > NR_CPUS) {
+ printk(KERN_ERR "Tegra: no. of cores (%u) greater than configured (%u), clipping\n",
+ ncores, NR_CPUS);
+ ncores = NR_CPUS;
+ }
+
for (i = 0; i < ncores; i++)
cpu_set(i, cpu_possible_map);
}
-void __init smp_prepare_cpus(unsigned int max_cpus)
+void __init platform_smp_prepare_cpus(unsigned int max_cpus)
{
- unsigned int ncores = scu_get_core_count(scu_base);
- unsigned int cpu = smp_processor_id();
int i;
- smp_store_cpu_info(cpu);
-
- /*
- * are we trying to boot more cores than exist?
- */
- if (max_cpus > ncores)
- max_cpus = ncores;
-
/*
* Initialise the present map, which describes the set of CPUs
* actually populated at the present time.
@@ -142,15 +135,5 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
- /*
- * Initialise the SCU if there are more than one CPU and let
- * them know where to start. Note that, on modern versions of
- * MILO, the "poke" doesn't actually do anything until each
- * individual core is sent a soft interrupt to get it out of
- * WFI
- */
- if (max_cpus > 1) {
- percpu_timer_setup();
- scu_enable(scu_base);
- }
+ scu_enable(scu_base);
}