breeze/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-01-25 15:03:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

s390/topology: Convert to use flag output macros

Browse Source 
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>
This commit is contained in:
Heiko Carstens
2024-11-07 16:11:36 +01:00
parent 81c54fc570
commit d4e50cfe9c
1 changed files with 8 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/s390/kernel/topology.c
View File

@@ -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)