diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2023-01-30 00:57:12 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-02-06 11:13:54 +0100 |
| commit | 3615d01114047ffce3a0942c21e6402c7b49bb3f (patch) | |
| tree | 375013583ebfa21be3f04e41f625028601130af8 /arch/s390/include | |
| parent | bf64f0517e5d0d8f3248143fc49535c1d1594b4f (diff) | |
s390/mem_detect: add get_mem_detect_online_total()
Add a function to get online memory in total. It is supposed to be used
in the decompressor as well as during early kernel startup.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/mem_detect.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/include/asm/mem_detect.h b/arch/s390/include/asm/mem_detect.h index 058ac2647eb7..08798ddf5143 100644 --- a/arch/s390/include/asm/mem_detect.h +++ b/arch/s390/include/asm/mem_detect.h @@ -66,6 +66,17 @@ static inline int __get_mem_detect_block(u32 n, unsigned long *start, i < mem_detect.count; \ i++, __get_mem_detect_block(i, p_start, p_end)) +static inline unsigned long get_mem_detect_online_total(void) +{ + unsigned long start, end, total = 0; + int i; + + for_each_mem_detect_block(i, &start, &end) + total += end - start; + + return total; +} + static inline void get_mem_detect_reserved(unsigned long *start, unsigned long *size) { |