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| author |   Vasily Gorbik <gor@linux.ibm.com> | 2018-04-11 19:15:24 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:12 +0200 |
| commit | 54c57795e848100a2502b7a39b12b784292f4576 (patch) | |
| tree | ae93ff66373017b80bbeecd2bc74aa5e04746246 /drivers/s390/char | |
| parent | s390/mem_detect: use SCLP info for continuous memory detection (diff) | |
| download | linux-dev-54c57795e848100a2502b7a39b12b784292f4576.tar.xz linux-dev-54c57795e848100a2502b7a39b12b784292f4576.zip | |
s390/mem_detect: replace tprot loop with binary search
In a situation when other memory detection methods are not available
(no SCLP and no z/VM diag260), continuous online memory is assumed.
Replacing tprot loop with faster binary search, as only online memory
end has to be found.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp_early_core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp_early_core.c b/drivers/s390/char/sclp_early_core.c index 0df08dcb9fe8..acfe09313852 100644 --- a/drivers/s390/char/sclp_early_core.c +++ b/drivers/s390/char/sclp_early_core.c @@ -272,7 +272,7 @@ int __init sclp_early_get_info(struct read_info_sccb *info) return 0; } -int __init sclp_early_get_meminfo(unsigned long *mem, unsigned long *rzm) +int __init sclp_early_get_memsize(unsigned long *mem) { unsigned long rnmax; unsigned long rnsize; @@ -285,7 +285,6 @@ int __init sclp_early_get_meminfo(unsigned long *mem, unsigned long *rzm) rnsize = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; rnsize <<= 20; *mem = rnsize * rnmax; - *rzm = rnsize; return 0; } |