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Metag architecture changes for v3.14 

- A few cleanups and minor bug fixes.
 - Kill SMP single function call IPI.
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Merge tag 'metag-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag

Pull Metag architecture changes from James Hogan:
 - A few cleanups and minor bug fixes.
 - Kill SMP single function call IPI.

* tag 'metag-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  metag/smp: Make boot_secondary() static
  metag: topology: export 'cpu_core_map'
  smp, metag: kill SMP single function call interrupt
  metag: smp: don't set irq regs in do_IPI()
  metag: dma: remove dead code in dma_alloc_init()
This commit is contained in:
Linus Torvalds 2014-01-20 09:25:32 -08:00
parent 8cf7a16ee9 e9a1d0165b
commit a1a3b3efc4
4 changed files with 5 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/metag/include/asm/smp.h
View File

@ -7,13 +7,11 @@
enum ipi_msg_type {
IPI_CALL_FUNC,
IPI_CALL_FUNC_SINGLE,
IPI_RESCHEDULE,
};
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
asmlinkage void secondary_start_kernel(void);

5
arch/metag/kernel/dma.c
View File

@ -399,11 +399,6 @@ static int __init dma_alloc_init(void)
pgd = pgd_offset(&init_mm, CONSISTENT_START);
pud = pud_alloc(&init_mm, pgd, CONSISTENT_START);
pmd = pmd_alloc(&init_mm, pud, CONSISTENT_START);
if (!pmd) {
pr_err("%s: no pmd tables\n", __func__);
ret = -ENOMEM;
break;
}
WARN_ON(!pmd_none(*pmd));
pte = pte_alloc_kernel(pmd, CONSISTENT_START);

15
arch/metag/kernel/smp.c
View File

@ -68,7 +68,7 @@ static DECLARE_COMPLETION(cpu_running);
/*
* "thread" is assumed to be a valid Meta hardware thread ID.
*/
int boot_secondary(unsigned int thread, struct task_struct *idle)
static int boot_secondary(unsigned int thread, struct task_struct *idle)
{
u32 val;
@ -491,7 +491,7 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
void arch_send_call_function_single_ipi(int cpu)
{
send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC);
}
void show_ipi_list(struct seq_file *p)
@ -517,11 +517,10 @@ static DEFINE_SPINLOCK(stop_lock);
*
* Bit 0 - Inter-processor function call
*/
static int do_IPI(struct pt_regs *regs)
static int do_IPI(void)
{
unsigned int cpu = smp_processor_id();
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
struct pt_regs *old_regs = set_irq_regs(regs);
unsigned long msgs, nextmsg;
int handled = 0;
@ -546,10 +545,6 @@ static int do_IPI(struct pt_regs *regs)
generic_smp_call_function_interrupt();
break;
case IPI_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
default:
pr_crit("CPU%u: Unknown IPI message 0x%lx\n",
cpu, nextmsg);
@ -557,8 +552,6 @@ static int do_IPI(struct pt_regs *regs)
}
}
set_irq_regs(old_regs);
return handled;
}
@ -624,7 +617,7 @@ static void kick_raise_softirq(cpumask_t callmap, unsigned int irq)
static TBIRES ipi_handler(TBIRES State, int SigNum, int Triggers,
int Inst, PTBI pTBI, int *handled)
{
*handled = do_IPI((struct pt_regs *)State.Sig.pCtx);
*handled = do_IPI();
return State;
}

1
arch/metag/kernel/topology.c
View File

@ -19,6 +19,7 @@
DEFINE_PER_CPU(struct cpuinfo_metag, cpu_data);
cpumask_t cpu_core_map[NR_CPUS];
EXPORT_SYMBOL(cpu_core_map);
static cpumask_t cpu_coregroup_map(unsigned int cpu)
{