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: John David Anglin <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

Author: danglin44

arch/parisc/include/asm/cacheflush.h

@@ -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

@@ -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

@@ -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;