Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-17 10:46:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

s390/cio/qdio: 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 16:11:52 +01:00
parent 6816e2124d
commit f62ad9073a
1 changed files with 13 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/s390/cio/qdio_main.c
View File

@ -17,6 +17,7 @@
#include <linux/atomic.h>
#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/asm.h>
#include <asm/ipl.h>
#include "cio.h"
@ -42,13 +43,12 @@ static inline int do_siga_sync(unsigned long schid,
" lgr 2,%[out]\n"
" lgr 3,%[in]\n"
" siga 0\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (cc)
CC_IPM(cc)
: CC_OUT(cc, cc)
: [fc] "d" (fc), [schid] "d" (schid),
[out] "d" (out_mask), [in] "d" (in_mask)
: "cc", "0", "1", "2", "3");
return cc;
: CC_CLOBBER_LIST("0", "1", "2", "3"));
return CC_TRANSFORM(cc);
}
static inline int do_siga_input(unsigned long schid, unsigned long mask,
@ -61,12 +61,11 @@ static inline int do_siga_input(unsigned long schid, unsigned long mask,
" lgr 1,%[schid]\n"
" lgr 2,%[mask]\n"
" siga 0\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (cc)
CC_IPM(cc)
: CC_OUT(cc, cc)
: [fc] "d" (fc), [schid] "d" (schid), [mask] "d" (mask)
: "cc", "0", "1", "2");
return cc;
: CC_CLOBBER_LIST("0", "1", "2"));
return CC_TRANSFORM(cc);
}
/**
@ -93,13 +92,12 @@ static inline int do_siga_output(unsigned long schid, unsigned long mask,
" lgr 3,%[aob]\n"
" siga 0\n"
" lgr %[fc],0\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (cc), [fc] "+&d" (fc)
CC_IPM(cc)
: CC_OUT(cc, cc), [fc] "+&d" (fc)
: [schid] "d" (schid), [mask] "d" (mask), [aob] "d" (aob)
: "cc", "0", "1", "2", "3");
: CC_CLOBBER_LIST("0", "1", "2", "3"));
*bb = fc >> 31;
return cc;
return CC_TRANSFORM(cc);
}
/**