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ARC: help gcc elide icache helper for !SMP

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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2014-07-09 14:59:47 +05:30
parent 1b1a22b133
commit af5abf1b04
1 changed files with 28 additions and 11 deletions
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39
arch/arc/mm/cache_arc700.c
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@ -396,8 +396,16 @@ static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr,
/***********************************************************
* Machine specific helper for per line I-Cache invalidate.
*/
static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr,
unsigned long sz)
static inline void __ic_entire_inv(void)
{
write_aux_reg(ARC_REG_IC_IVIC, 1);
read_aux_reg(ARC_REG_IC_CTRL); /* blocks */
}
static inline void
__ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr,
unsigned long sz)
{
unsigned long flags;
@ -406,30 +414,39 @@ static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr,
local_irq_restore(flags);
}
static inline void __ic_entire_inv(void)
{
write_aux_reg(ARC_REG_IC_IVIC, 1);
read_aux_reg(ARC_REG_IC_CTRL); /* blocks */
}
#ifndef CONFIG_SMP
struct ic_line_inv_vaddr_ipi {
#define __ic_line_inv_vaddr(p, v, s) __ic_line_inv_vaddr_local(p, v, s)
#else
struct ic_inv_args {
unsigned long paddr, vaddr;
int sz;
};
static void __ic_line_inv_vaddr_helper(void *info)
{
struct ic_line_inv_vaddr_ipi *ic_inv = (struct ic_line_inv_vaddr_ipi*) info;
struct ic_inv *ic_inv_args = (struct ic_inv_args *) info;
__ic_line_inv_vaddr_local(ic_inv->paddr, ic_inv->vaddr, ic_inv->sz);
}
static void __ic_line_inv_vaddr(unsigned long paddr, unsigned long vaddr,
unsigned long sz)
{
struct ic_line_inv_vaddr_ipi ic_inv = { paddr, vaddr , sz};
struct ic_inv_args ic_inv = {
.paddr = paddr,
.vaddr = vaddr,
.sz = sz
};
on_each_cpu(__ic_line_inv_vaddr_helper, &ic_inv, 1);
}
#else
#endif /* CONFIG_SMP */
#else /* !CONFIG_ARC_HAS_ICACHE */
#define __ic_entire_inv()
#define __ic_line_inv_vaddr(pstart, vstart, sz)