AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

irqchip: armada-370-xp: Initialize per cpu registers when CONFIG_SMP=N

Browse Source 
The irqchip driver called armada_xp_mpic_smp_cpu_init() when CONFIG_SMP=Y
to initialize some per cpu registers. The function is called on each
CPU by calling it explicitly on the boot CPU and then using a CPU notifier
for the non boot CPUs.

This commit removes the CONFIG_SMP constrain, so the per cpu registers are
also initialized when CONFIG_SMP=N, which is the right thing to do.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Link: https://lkml.kernel.org/r/1425379400-4346-2-git-send-email-maxime.ripard@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Ezequiel Garcia 2015-03-03 11:43:14 +01:00 committed by Jason Cooper
parent 5724be8464
commit 933a24b06b
1 changed files with 23 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/irqchip/irq-armada-370-xp.c
View File

@ -308,28 +308,6 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
return 0;
}
#ifdef CONFIG_SMP
static void armada_mpic_send_doorbell(const struct cpumask *mask,
unsigned int irq)
{
int cpu;
unsigned long map = 0;
/* Convert our logical CPU mask into a physical one. */
for_each_cpu(cpu, mask)
map |= 1 << cpu_logical_map(cpu);
/*
* Ensure that stores to Normal memory are visible to the
* other CPUs before issuing the IPI.
*/
dsb();
/* submit softirq */
writel((map << 8) | irq, main_int_base +
ARMADA_370_XP_SW_TRIG_INT_OFFS);
}
static void armada_xp_mpic_smp_cpu_init(void)
{
u32 control;
@ -352,6 +330,28 @@ static void armada_xp_mpic_smp_cpu_init(void)
writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
}
#ifdef CONFIG_SMP
static void armada_mpic_send_doorbell(const struct cpumask *mask,
unsigned int irq)
{
int cpu;
unsigned long map = 0;
/* Convert our logical CPU mask into a physical one. */
for_each_cpu(cpu, mask)
map |= 1 << cpu_logical_map(cpu);
/*
* Ensure that stores to Normal memory are visible to the
* other CPUs before issuing the IPI.
*/
dsb();
/* submit softirq */
writel((map << 8) | irq, main_int_base +
ARMADA_370_XP_SW_TRIG_INT_OFFS);
}
static int armada_xp_mpic_secondary_init(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
@ -588,9 +588,8 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
BUG_ON(!armada_370_xp_mpic_domain);
#ifdef CONFIG_SMP
/* Setup for the boot CPU */
armada_xp_mpic_smp_cpu_init();
#endif
armada_370_xp_msi_init(node, main_int_res.start);