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s390/ptrace: PTRACE_TE_ABORT_RAND

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The patch implements a s390 specific ptrace request
PTRACE_TE_ABORT_RAND to modify the randomness of spontaneous
aborts of memory transactions of the transaction execution
facility. The data argument of the ptrace request is used to
specify the levels of randomness, 0 for normal operation, 1 to
abort every transaction at a random instruction, and 2 to abort
a random transaction at a random instruction. The default is 0
for normal operation.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Michael Mueller
2013-07-02 22:58:26 +02:00
committed by Martin Schwidefsky
parent 47188d39b5
commit 64597f9dae
4 changed files with 51 additions and 14 deletions
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arch/s390/include/uapi/asm/ptrace.h
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@@ -400,6 +400,7 @@ typedef struct
#define PTRACE_POKE_SYSTEM_CALL 0x5008
#define PTRACE_ENABLE_TE 0x5009
#define PTRACE_DISABLE_TE 0x5010
#define PTRACE_TE_ABORT_RAND 0x5011
/*
* PT_PROT definition is loosely based on hppa bsd definition in