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percpu: make percpu symbols in powerpc unique 

This patch updates percpu related symbols in powerpc such that percpu
symbols are unique and don't clash with local symbols.  This serves
two purposes of decreasing the possibility of global percpu symbol
collision and allowing dropping per_cpu__ prefix from percpu symbols.

* arch/powerpc/kernel/perf_callchain.c: s/callchain/cpu_perf_callchain/

* arch/powerpc/kernel/setup-common.c: s/pvr/cpu_pvr/

* arch/powerpc/platforms/pseries/dtl.c: s/dtl/cpu_dtl/

* arch/powerpc/platforms/cell/interrupt.c: s/iic/cpu_iic/

Partly based on Rusty Russell's "alloc_percpu: rename percpu vars
which cause name clashes" patch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@ozlabs.org
This commit is contained in:
Tejun Heo 2009-10-29 22:34:14 +09:00
parent 0fe1e00954
commit 6b7487fc65
6 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -37,7 +37,7 @@ extern void cpu_die(void);
extern void smp_send_debugger_break(int cpu);
extern void smp_message_recv(int);
DECLARE_PER_CPU(unsigned int, pvr);
DECLARE_PER_CPU(unsigned int, cpu_pvr);
#ifdef CONFIG_HOTPLUG_CPU
extern void fixup_irqs(cpumask_t map);

4
arch/powerpc/kernel/perf_callchain.c
View File

@ -497,11 +497,11 @@ static void perf_callchain_user_32(struct pt_regs *regs,
* Since we can't get PMU interrupts inside a PMU interrupt handler,
* we don't need separate irq and nmi entries here.
*/
static DEFINE_PER_CPU(struct perf_callchain_entry, callchain);
static DEFINE_PER_CPU(struct perf_callchain_entry, cpu_perf_callchain);
struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
{
struct perf_callchain_entry *entry = &__get_cpu_var(callchain);
struct perf_callchain_entry *entry = &__get_cpu_var(cpu_perf_callchain);
entry->nr = 0;

4
arch/powerpc/kernel/setup-common.c
View File

@ -157,7 +157,7 @@ extern u32 cpu_temp_both(unsigned long cpu);
#endif /* CONFIG_TAU */
#ifdef CONFIG_SMP
DEFINE_PER_CPU(unsigned int, pvr);
DEFINE_PER_CPU(unsigned int, cpu_pvr);
#endif
static int show_cpuinfo(struct seq_file *m, void *v)
@ -209,7 +209,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
}
#ifdef CONFIG_SMP
pvr = per_cpu(pvr, cpu_id);
pvr = per_cpu(cpu_pvr, cpu_id);
#else
pvr = mfspr(SPRN_PVR);
#endif

2
arch/powerpc/kernel/smp.c
View File

@ -232,7 +232,7 @@ struct thread_info *current_set[NR_CPUS];
static void __devinit smp_store_cpu_info(int id)
{
per_cpu(pvr, id) = mfspr(SPRN_PVR);
per_cpu(cpu_pvr, id) = mfspr(SPRN_PVR);
}
static void __init smp_create_idle(unsigned int cpu)

14
arch/powerpc/platforms/cell/interrupt.c
View File

@ -54,7 +54,7 @@ struct iic {
struct device_node *node;
};
static DEFINE_PER_CPU(struct iic, iic);
static DEFINE_PER_CPU(struct iic, cpu_iic);
#define IIC_NODE_COUNT 2
static struct irq_host *iic_host;
@ -82,7 +82,7 @@ static void iic_unmask(unsigned int irq)
static void iic_eoi(unsigned int irq)
{
struct iic *iic = &__get_cpu_var(iic);
struct iic *iic = &__get_cpu_var(cpu_iic);
out_be64(&iic->regs->prio, iic->eoi_stack[--iic->eoi_ptr]);
BUG_ON(iic->eoi_ptr < 0);
}
@ -146,7 +146,7 @@ static unsigned int iic_get_irq(void)
struct iic *iic;
unsigned int virq;
iic = &__get_cpu_var(iic);
iic = &__get_cpu_var(cpu_iic);
*(unsigned long *) &pending =
in_be64((u64 __iomem *) &iic->regs->pending_destr);
if (!(pending.flags & CBE_IIC_IRQ_VALID))
@ -161,12 +161,12 @@ static unsigned int iic_get_irq(void)
void iic_setup_cpu(void)
{
out_be64(&__get_cpu_var(iic).regs->prio, 0xff);
out_be64(&__get_cpu_var(cpu_iic).regs->prio, 0xff);
}
u8 iic_get_target_id(int cpu)
{
return per_cpu(iic, cpu).target_id;
return per_cpu(cpu_iic, cpu).target_id;
}
EXPORT_SYMBOL_GPL(iic_get_target_id);
@ -181,7 +181,7 @@ static inline int iic_ipi_to_irq(int ipi)
void iic_cause_IPI(int cpu, int mesg)
{
out_be64(&per_cpu(iic, cpu).regs->generate, (0xf - mesg) << 4);
out_be64(&per_cpu(cpu_iic, cpu).regs->generate, (0xf - mesg) << 4);
}
struct irq_host *iic_get_irq_host(int node)
@ -348,7 +348,7 @@ static void __init init_one_iic(unsigned int hw_cpu, unsigned long addr,
/* XXX FIXME: should locate the linux CPU number from the HW cpu
* number properly. We are lucky for now
*/
struct iic *iic = &per_cpu(iic, hw_cpu);
struct iic *iic = &per_cpu(cpu_iic, hw_cpu);
iic->regs = ioremap(addr, sizeof(struct cbe_iic_thread_regs));
BUG_ON(iic->regs == NULL);

4
arch/powerpc/platforms/pseries/dtl.c
View File

@ -54,7 +54,7 @@ struct dtl {
int buf_entries;
u64 last_idx;
};
static DEFINE_PER_CPU(struct dtl, dtl);
static DEFINE_PER_CPU(struct dtl, cpu_dtl);
/*
* Dispatch trace log event mask:
@ -261,7 +261,7 @@ static int dtl_init(void)
/* set up the per-cpu log structures */
for_each_possible_cpu(i) {
struct dtl *dtl = &per_cpu(dtl, i);
struct dtl *dtl = &per_cpu(cpu_dtl, i);
dtl->cpu = i;
rc = dtl_setup_file(dtl);