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[S390] cpcmd <-> __cpcmd calling issues

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In case of reipl cpcmd gets called when all other cpus are not running
anymore. To prevent deadlocks change __cpcmd so that it doesn't take
any locks and call cpcmd or __cpcmd, whatever is correct in the current
context.

Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Heiko Carstens 2006-12-04 15:40:30 +01:00 • committed by Martin Schwidefsky
commit 740b5706b9
4 changed files with 24 additions and 24 deletions
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10
include/asm-s390/cpcmd.h
View file

@ -7,8 +7,8 @@
* Christian Borntraeger (cborntra@de.ibm.com),
*/
#ifndef __CPCMD__
#define __CPCMD__
#ifndef _ASM_S390_CPCMD_H
#define _ASM_S390_CPCMD_H
/*
* the lowlevel function for cpcmd
@ -16,9 +16,6 @@
*/
extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
#ifndef __s390x__
#define cpcmd __cpcmd
#else
/*
* cpcmd is the in-kernel interface for issuing CP commands
*
@ -33,6 +30,5 @@ extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code
* NOTE: If the response buffer is not below 2 GB, cpcmd can sleep
*/
extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
#endif /*__s390x__*/
#endif
#endif /* _ASM_S390_CPCMD_H */