alpha: add support for memset16

Alpha already had an optimised fill-memory-with-16-bit-quantity
assembler routine called memsetw().  It has a slightly different calling
convention from memset16() in that it takes a byte count, not a count of
words.  That's the same convention used by ARM's __memset routines, so
rename Alpha's routine to match and add a memset16() wrapper around it.
Then convert Alpha's scr_memsetw() to call memset16() instead of
memsetw().

Link: http://lkml.kernel.org/r/20170720184539.31609-6-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/alpha/lib/memset.S b/arch/alpha/lib/memset.S
index 89a26f5e89de..f824969e9e77 100644
--- a/arch/alpha/lib/memset.S
+++ b/arch/alpha/lib/memset.S
@@ -20,7 +20,7 @@
         .globl memset
         .globl __memset
         .globl ___memset
-        .globl __memsetw
+        .globl __memset16
         .globl __constant_c_memset
 
         .ent ___memset
@@ -110,8 +110,8 @@ EXPORT_SYMBOL(___memset)
 EXPORT_SYMBOL(__constant_c_memset)
 
         .align 5
-        .ent __memsetw
-__memsetw:
+        .ent __memset16
+__memset16:
         .prologue 0
 
         inswl $17,0,$1          /* E0 */
@@ -123,8 +123,8 @@ __memsetw:
         or $1,$4,$17            /* E0 */
         br __constant_c_memset  /* .. E1 */
 
-        .end __memsetw
-EXPORT_SYMBOL(__memsetw)
+        .end __memset16
+EXPORT_SYMBOL(__memset16)
 
 memset = ___memset
 __memset = ___memset