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Message-ID: <20110910233250.GC29319@htj.dyndns.org> Date: Sun, 11 Sep 2011 08:32:50 +0900 From: Tejun Heo <tj@...nel.org> To: Denys Vlasenko <vda.linux@...glemail.com> Cc: Oleg Nesterov <oleg@...hat.com>, linux-kernel@...r.kernel.org, dvlasenk@...hat.com, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [PATCH 2/2] ptrace: simplify PTRACE_foo constants and PTRACE_SETOPTIONS code On Fri, Sep 09, 2011 at 08:29:34AM +0200, Denys Vlasenko wrote: > ptrace: simplify PTRACE_foo constants and PTRACE_SETOPTIONS code > > Exchange PT_TRACESYSGOOD and PT_PTRACE_CAP bit positions, which makes > PT_option bits contiguous and therefore makes code in ptrace_setoptions() > much simpler. > > Every PTRACE_O_TRACEevent is defined to (1 << PTRACE_EVENT_event) > instead of using explicit numeric constants, to ensure we don't > mess up relationship between bit positions and event ids. > > PT_EVENT_FLAG_SHIFT was not particularly useful, PT_OPT_FLAG_SHIFT with > value of PT_EVENT_FLAG_SHIFT-1 is easier to use. > > PT_TRACE_MASK constant is nuked, the only its use is replaced by > (PTRACE_O_MASK << PT_OPT_FLAG_SHIFT). > > Signed-off-by: Denys Vlasenko <dvlasenk@...hat.com> Acked-by: Tejun Heo <tj@...nel.org> Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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