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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-11-07 16:11:36 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-11-13 14:31:31 +0100 |
| commit | d4e50cfe9c75f4d3caab62c7227152db10d23c82 (patch) | |
| tree | 62645838ab667bdb07db1869fe04294178d79baa | |
| parent | 81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4 (diff) | |
| download | linux-d4e50cfe9c75f4d3caab62c7227152db10d23c82.tar.gz linux-d4e50cfe9c75f4d3caab62c7227152db10d23c82.tar.bz2 linux-d4e50cfe9c75f4d3caab62c7227152db10d23c82.zip | |
s390/topology: 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>
| -rw-r--r-- | arch/s390/kernel/topology.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index a33d6a105086..4f9c301a705b 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -26,6 +26,7 @@ #include <linux/node.h> #include <asm/hiperdispatch.h> #include <asm/sysinfo.h> +#include <asm/asm.h> #define PTF_HORIZONTAL (0UL) #define PTF_VERTICAL (1UL) @@ -224,15 +225,15 @@ static void topology_update_polarization_simple(void) static int ptf(unsigned long fc) { - int rc; + int cc; asm volatile( - " .insn rre,0xb9a20000,%1,%1\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (rc) - : "d" (fc) : "cc"); - return rc; + " .insn rre,0xb9a20000,%[fc],%[fc]\n" + CC_IPM(cc) + : CC_OUT(cc, cc) + : [fc] "d" (fc) + : CC_CLOBBER); + return CC_TRANSFORM(cc); } int topology_set_cpu_management(int fc) |