1022.cacheflush.patch

sm86xx内核源包括补丁（ GPL ）的

diff -Naur --exclude=CVS --exclude='*.o' --exclude='*.a' --exclude='*.so' --exclude='*.elf' --exclude=System.map --exclude=Makefile.d --exclude='*log' --exclude='*log2' --exclude='*~' --exclude='.*~' --exclude='.#*' --exclude='*.bak' --exclude='*.orig' --exclude='*.rej' --exclude='core.[0-9]*' --exclude=.depend --exclude='.*.o.flags' --exclude='*.gz' --exclude=.depend --exclude='.*.o.flags' --exclude='*.gz' --exclude=vmlinux --exclude=vmlinux.bin --exclude=yamon-02.06-SIGMADESIGNS-01_el.bin linux-2.6.15.ref/arch/mips/mm/cache.c linux-2.6.15/arch/mips/mm/cache.c
--- linux-2.6.15.ref/arch/mips/mm/cache.c	2006-11-30 14:59:02.000000000 -0800
+++ linux-2.6.15/arch/mips/mm/cache.c	2006-11-30 15:00:30.000000000 -0800
@@ -61,7 +61,13 @@
 	if (!access_ok(VERIFY_WRITE, (void __user *) addr, bytes))
 		return -EFAULT;
 
-	flush_icache_range(addr, addr + bytes);
+	if (cache & ICACHE)
+		flush_icache_range(addr, addr + bytes);
+	if (cache & DCACHE) {
+		unsigned long start_addr;
+		for (start_addr = addr; start_addr < (addr + bytes); start_addr += PAGE_SIZE)
+			flush_data_cache_page(start_addr);
+	}
 
 	return 0;
 }
diff -Naur --exclude=CVS --exclude='*.o' --exclude='*.a' --exclude='*.so' --exclude='*.elf' --exclude=System.map --exclude=Makefile.d --exclude='*log' --exclude='*log2' --exclude='*~' --exclude='.*~' --exclude='.#*' --exclude='*.bak' --exclude='*.orig' --exclude='*.rej' --exclude='core.[0-9]*' --exclude=.depend --exclude='.*.o.flags' --exclude='*.gz' --exclude=.depend --exclude='.*.o.flags' --exclude='*.gz' --exclude=vmlinux --exclude=vmlinux.bin --exclude=yamon-02.06-SIGMADESIGNS-01_el.bin linux-2.6.15.ref/README.1022.cacheflush.patch linux-2.6.15/README.1022.cacheflush.patch
--- linux-2.6.15.ref/README.1022.cacheflush.patch	1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.15/README.1022.cacheflush.patch	2006-11-30 15:01:29.000000000 -0800
@@ -0,0 +1,18 @@
+Feature:
+--------
+More optimization on cacheflush system call.
+
+Prerequisite patch numbers:
+---------------------------
+none
+
+Primary author:
+---------------
+YH Lin
+
+Related to which chip version SMP86xx xx=?
+------------------------------------------
+Tango2 ES6/RevA or above, or Tango3 ES1 or above
+
+(linux patches) which CONFIG_... are provided:
+----------------------------------------------