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[S390] cleanup trap handling

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Move the program interruption code and the translation exception identifier
to the pt_regs structure as 'int_code' and 'int_parm_long' and make the
first level interrupt handler in entry[64].S store the two values. That
makes it possible to drop 'prot_addr' and 'trap_no' from the thread_struct
and to reduce the number of arguments to a lot of functions. Finally
un-inline do_trap. Overall this saves 5812 bytes in the .text section of
the 64 bit kernel.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2011-12-27 11:27:18 +01:00
parent 679e2ea733
commit aa33c8cbba
12 changed files with 158 additions and 210 deletions
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3
arch/s390/include/asm/ptrace.h
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@@ -324,7 +324,8 @@ struct pt_regs
psw_t psw;
unsigned long gprs[NUM_GPRS];
unsigned long orig_gpr2;
unsigned int svc_code;
unsigned int int_code;
unsigned long int_parm_long;
};
/*