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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-01-24 15:58:52 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-02-08 14:13:19 +0100 |
| commit | d5ab7a34f9bbad54f89b812e6b0d2d898f9433db (patch) | |
| tree | 3aa685926bc40dc71fb3482b7766705ca451fa3a /arch/s390/kernel/swsusp.S | |
| parent | 76fdf1416eed264dee18aa7db3a32dcfa8572e03 (diff) | |
| download | lwn-d5ab7a34f9bbad54f89b812e6b0d2d898f9433db.tar.gz lwn-d5ab7a34f9bbad54f89b812e6b0d2d898f9433db.zip | |
s390/sclp: make early sclp code readable
This patch
- unifies the old sclp early code and the sclp early printk code, so
they can use common functions
- makes sure all sclp early functions and variables have the same
"sclp_early" prefix
- converts the sclp early printk code into readable code by using
existing data structures instead of hard coded magic arrays
- splits the early sclp code into two files: sclp_early.c and
sclp_early_core.c. The core file contains everything that is
required by the kernel decompressor and may not call functions not
contained within the core file. Otherwise the result would be a
link error.
- changes interrupt handling to be completely synchronous. The old
early sclp code had a small window which allowed to receive several
interrupts instead of exactly the single expected interrupt. This
did hide a subtle potential bug, which is fixed with this large
rework.
- contains a couple of small cleanups.
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/swsusp.S')
| -rw-r--r-- | arch/s390/kernel/swsusp.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/swsusp.S b/arch/s390/kernel/swsusp.S index 1ff21f05d7dd..6c56fb89f553 100644 --- a/arch/s390/kernel/swsusp.S +++ b/arch/s390/kernel/swsusp.S @@ -196,7 +196,7 @@ pgm_check_entry: larl %r15,init_thread_union ahi %r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER) larl %r2,.Lpanic_string - larl %r3,_sclp_print_early + larl %r3,sclp_early_printk lghi %r1,0 sam31 sigp %r1,%r0,SIGP_SET_ARCHITECTURE |