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s390/lpp: use assembler alternatives for the LPP instruction

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With the new macros for CPU alternatives the MACHINE_FLAG_LPP check
around the LPP instruction can be optimized. After this is done the
flag can be removed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2018-03-26 15:23:33 +02:00
parent b058661a99
commit e5b98199de
4 changed files with 8 additions and 14 deletions
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4
arch/s390/include/asm/cpu_mf.h
View File

@@ -29,12 +29,12 @@
/* CPU measurement facility support */
static inline int cpum_cf_avail(void)
{
return MACHINE_HAS_LPP && test_facility(67);
return test_facility(40) && test_facility(67);
}
static inline int cpum_sf_avail(void)
{
return MACHINE_HAS_LPP && test_facility(68);
return test_facility(40) && test_facility(68);
}

2
arch/s390/include/asm/setup.h
View File

@@ -25,7 +25,6 @@
#define MACHINE_FLAG_DIAG44 _BITUL(6)
#define MACHINE_FLAG_EDAT1 _BITUL(7)
#define MACHINE_FLAG_EDAT2 _BITUL(8)
#define MACHINE_FLAG_LPP _BITUL(9)
#define MACHINE_FLAG_TOPOLOGY _BITUL(10)
#define MACHINE_FLAG_TE _BITUL(11)
#define MACHINE_FLAG_TLB_LC _BITUL(12)
@@ -66,7 +65,6 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#define MACHINE_HAS_LPP (S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)