From: Heiko Carstens <hca@linux.ibm.com>
Date: Thu, 7 Nov 2024 15:11:35 +0000 (+0100)
Subject: s390/time: Convert to use flag output macros
X-Git-Tag: v6.13-rc1~206^2~18
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4;p=thirdparty%2Fkernel%2Flinux.git

s390/time: Convert to use flag output macros

Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---

diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 640901f2fbc3c..8fe56456feabe 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -13,6 +13,7 @@
 #include <linux/preempt.h>
 #include <linux/time64.h>
 #include <asm/lowcore.h>
+#include <asm/asm.h>
 
 /* The value of the TOD clock for 1.1.1970. */
 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
@@ -44,11 +45,12 @@ static inline int set_tod_clock(__u64 time)
 	int cc;
 
 	asm volatile(
-		"   sck   %1\n"
-		"   ipm   %0\n"
-		"   srl   %0,28\n"
-		: "=d" (cc) : "Q" (time) : "cc");
-	return cc;
+		"	sck	%[time]\n"
+		CC_IPM(cc)
+		: CC_OUT(cc, cc)
+		: [time] "Q" (time)
+		: CC_CLOBBER);
+	return CC_TRANSFORM(cc);
 }
 
 static inline int store_tod_clock_ext_cc(union tod_clock *clk)
@@ -56,11 +58,12 @@ static inline int store_tod_clock_ext_cc(union tod_clock *clk)
 	int cc;
 
 	asm volatile(
-		"   stcke  %1\n"
-		"   ipm   %0\n"
-		"   srl   %0,28\n"
-		: "=d" (cc), "=Q" (*clk) : : "cc");
-	return cc;
+		"	stcke	%[clk]\n"
+		CC_IPM(cc)
+		: CC_OUT(cc, cc), [clk] "=Q" (*clk)
+		:
+		: CC_CLOBBER);
+	return CC_TRANSFORM(cc);
 }
 
 static __always_inline void store_tod_clock_ext(union tod_clock *tod)
@@ -149,12 +152,11 @@ struct ptff_qui {
 		"	lgr	0,%[reg0]\n"				\
 		"	lgr	1,%[reg1]\n"				\
 		"	ptff\n"						\
-		"	ipm	%[rc]\n"				\
-		"	srl	%[rc],28\n"				\
-		: [rc] "=&d" (rc), "+m" (*(struct addrtype *)reg1)	\
+		CC_IPM(rc)						\
+		: CC_OUT(rc, rc), "+m" (*(struct addrtype *)reg1)	\
 		: [reg0] "d" (reg0), [reg1] "d" (reg1)			\
-		: "cc", "0", "1");					\
-	rc;								\
+		: CC_CLOBBER_LIST("0", "1"));				\
+	CC_TRANSFORM(rc);						\
 })
 
 static inline unsigned long local_tick_disable(void)