diff options
| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-12-19 21:08:27 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-01-13 14:15:06 +0100 |
| commit | 2154e0b3282d0029ea7790a8414d61d5dc7d72ff (patch) | |
| tree | 4dcd6085f7402a5a21d2e007fcbf1ef301b5020f /arch/s390/include/asm | |
| parent | 8e9205d2a58989aff46000ef47021633146ca493 (diff) | |
s390/mm: allocate Absolute Lowcore Area in decompressor
Move Absolute Lowcore Area allocation to the decompressor.
As result, get_abs_lowcore() and put_abs_lowcore() access
brackets become really straight and do not require complex
execution context analysis and LAP and interrupts tackling.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/abs_lowcore.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/s390/include/asm/abs_lowcore.h b/arch/s390/include/asm/abs_lowcore.h index 4c61b14ee928..6f264b79e377 100644 --- a/arch/s390/include/asm/abs_lowcore.h +++ b/arch/s390/include/asm/abs_lowcore.h @@ -7,11 +7,21 @@ #define ABS_LOWCORE_MAP_SIZE (NR_CPUS * sizeof(struct lowcore)) extern unsigned long __abs_lowcore; -extern bool abs_lowcore_mapped; -struct lowcore *get_abs_lowcore(unsigned long *flags); -void put_abs_lowcore(struct lowcore *lc, unsigned long flags); int abs_lowcore_map(int cpu, struct lowcore *lc, bool alloc); void abs_lowcore_unmap(int cpu); +static inline struct lowcore *get_abs_lowcore(void) +{ + int cpu; + + cpu = get_cpu(); + return ((struct lowcore *)__abs_lowcore) + cpu; +} + +static inline void put_abs_lowcore(struct lowcore *lc) +{ + put_cpu(); +} + #endif /* _ASM_S390_ABS_LOWCORE_H */ |