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[S390] ptrace cleanup

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Overhaul program event recording and the code dealing with the ptrace
user space interface.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2011-01-05 12:48:10 +01:00
committed by Martin Schwidefsky
parent da7f51c11d
commit 5e9a26928f
15 changed files with 346 additions and 262 deletions
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6
arch/s390/mm/fault.c
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@@ -235,13 +235,13 @@ static noinline int signal_return(struct pt_regs *regs, long int_code,
rc = __get_user(instruction, (u16 __user *) regs->psw.addr);
if (!rc && instruction == 0x0a77) {
clear_tsk_thread_flag(current, TIF_SINGLE_STEP);
clear_tsk_thread_flag(current, TIF_PER_TRAP);
if (is_compat_task())
sys32_sigreturn();
else
sys_sigreturn();
} else if (!rc && instruction == 0x0aad) {
clear_tsk_thread_flag(current, TIF_SINGLE_STEP);
clear_tsk_thread_flag(current, TIF_PER_TRAP);
if (is_compat_task())
sys32_rt_sigreturn();
else
@@ -379,7 +379,7 @@ static inline int do_exception(struct pt_regs *regs, int access,
* The instruction that caused the program check will
* be repeated. Don't signal single step via SIGTRAP.
*/
clear_tsk_thread_flag(tsk, TIF_SINGLE_STEP);
clear_tsk_thread_flag(tsk, TIF_PER_TRAP);
fault = 0;
out_up:
up_read(&mm->mmap_sem);