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Date:	Sun, 14 Apr 2013 18:05:01 +0200
From:	Oleg Nesterov <>
To:	Andrew Morton <>
Cc:	Benjamin Herrenschmidt <>,
	Frederic Weisbecker <>,
	Jan Kratochvil <>,
	Ingo Molnar <>, Paul Mackerras <>,
	Paul Mundt <>,
	Prasad <>,
	Russell King <>,
	Will Deacon <>,
Subject: [PATCH 0/5] kill ptrace_{get,put}_breakpoints()


Kill ptrace_{get,put}_breakpoints and task_struct->ptrace_bp_refcnt,
9899d11f "ptrace: ensure arch_ptrace/ptrace_request can never race
with SIGKILL" made this all unneeded.

Benjamin, Paul, arch_dup_task_struct()->flush_ptrace_hw_breakpoint(src)
on powerpc looks "obviously wrong". Don't we need

	- flush_ptrace_hw_breakpoint(src);
	+ dst->thread->ptrace_bps[0] = NULL;



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