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Commit ef470a60 authored by John David Anglin's avatar John David Anglin Committed by Helge Deller
Browse files

parisc: Remove flush_user_dcache_range and flush_user_icache_range 



The functions flush_user_dcache_range() and flush_user_icache_range()
are only used by the parisc signal handling code.  This code only needs
to flush a couple of lines, so the threshold check is unnecessary
overhead.

Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 8351badf

arch/parisc/include/asm/cacheflush.h

+0 −2
Original line number Diff line number Diff line
@@ -27,8 +27,6 @@ void flush_user_dcache_range_asm(unsigned long, unsigned long); 
void flush_kernel_dcache_range_asm(unsigned long, unsigned long);

void flush_kernel_dcache_page_asm(void *);

void flush_kernel_icache_page(void *);

void flush_user_dcache_range(unsigned long, unsigned long);

void flush_user_icache_range(unsigned long, unsigned long);



/* Cache flush operations */

arch/parisc/kernel/cache.c

+0 −18
Original line number Diff line number Diff line
@@ -573,24 +573,6 @@ void flush_cache_mm(struct mm_struct *mm) 
	}

}



void

flush_user_dcache_range(unsigned long start, unsigned long end)

{

	if ((end - start) < parisc_cache_flush_threshold)

		flush_user_dcache_range_asm(start,end);

	else

		flush_data_cache();

}



void

flush_user_icache_range(unsigned long start, unsigned long end)

{

	if ((end - start) < parisc_cache_flush_threshold)

		flush_user_icache_range_asm(start,end);

	else

		flush_instruction_cache();

}



void flush_cache_range(struct vm_area_struct *vma,

		unsigned long start, unsigned long end)

{

arch/parisc/kernel/signal.c

+7 −6
Original line number Diff line number Diff line
@@ -232,6 +232,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, 
	struct rt_sigframe __user *frame;

	unsigned long rp, usp;

	unsigned long haddr, sigframe_size;

	unsigned long start, end;

	int err = 0;

#ifdef CONFIG_64BIT

	struct compat_rt_sigframe __user * compat_frame;
@@ -299,10 +300,10 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, 
	}

#endif



	flush_user_dcache_range((unsigned long) &frame->tramp[0],

			   (unsigned long) &frame->tramp[TRAMP_SIZE]);

	flush_user_icache_range((unsigned long) &frame->tramp[0],

			   (unsigned long) &frame->tramp[TRAMP_SIZE]);

	start = (unsigned long) &frame->tramp[0];

	end = (unsigned long) &frame->tramp[TRAMP_SIZE];

	flush_user_dcache_range_asm(start, end);

	flush_user_icache_range_asm(start, end);



	/* TRAMP Words 0-4, Length 5 = SIGRESTARTBLOCK_TRAMP

	 * TRAMP Words 5-9, Length 4 = SIGRETURN_TRAMP
@@ -548,8 +549,8 @@ insert_restart_trampoline(struct pt_regs *regs) 
		WARN_ON(err);



		/* flush data/instruction cache for new insns */

		flush_user_dcache_range(start, end);

		flush_user_icache_range(start, end);

		flush_user_dcache_range_asm(start, end);

		flush_user_icache_range_asm(start, end);



		regs->gr[31] = regs->gr[30] + 8;

		return;