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authorAlexander Gordeev <agordeev@linux.ibm.com>2022-12-19 21:08:27 +0100
committerHeiko Carstens <hca@linux.ibm.com>2023-01-13 14:15:06 +0100
commit2154e0b3282d0029ea7790a8414d61d5dc7d72ff (patch)
tree4dcd6085f7402a5a21d2e007fcbf1ef301b5020f /arch/s390/include/asm
parent8e9205d2a58989aff46000ef47021633146ca493 (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.h16
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 */