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[S390] sclp: Test facility list before executing a service call.

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Check if a command is available before executing. Saves some
superfluous service calls that won't succeed anyway.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2007-07-10 11:24:10 +02:00 • committed by Martin Schwidefsky
parent 05dd25307c
commit 83119ad4a1
5 changed files with 20 additions and 0 deletions
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include/asm-s390/sclp.h
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@ -28,6 +28,7 @@ struct sclp_ipl_info {
};
void sclp_readinfo_early(void);
void sclp_facilities_detect(void);
unsigned long long sclp_memory_detect(void);
int sclp_sdias_blk_count(void);
int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);