Messages in this thread | | | Date | Wed, 22 Jan 2014 09:52:03 +0900 | From | Masami Hiramatsu <> | Subject | Re: Re: [PATCH v6 1/8] x86: allow to handle errors in text_poke function family |
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(2014/01/21 23:02), Steven Rostedt wrote: > On Tue, 21 Jan 2014 14:00:37 +0100 > Petr Mladek <pmladek@suse.cz> wrote: > >>>> There are some situations where it is hard to recover from an error. Masami >>>> Hiramatsu <masami.hiramatsu.pt@hitachi.com> suggested to create >>>> text_poke*_or_die() variants for this purpose. >>> >>> I don't like the "_or_die()". Although I don't care much about it, I'm >>> thinking the x86 maintainers might not like it either. >>> >>> What about just doing the test in the places that would call "or_die"? >>> >>> ret = text_poke*(); >>> BUG_ON(ret); >> >> Exactly this solution has been used in v5 of this patch set, see >> https://lkml.org/lkml/2013/12/3/258 >> >> Masami suggested to use the "or_die()" because BUG_ON() was used on most >> locations, see https://lkml.org/lkml/2013/12/6/1107 > > If BUG_ON() is used in most locations, then we can make text_poke() > default to bug, and the just have a text_poke_safe() function that does > not bug. Or some similar name.
Unfortunately, since still there is BUG_ON() in text_poke() when we failed to modify text, I think text_poke_safe() is not a good name too.
> The "_die" has a bad taste in several developers mouth ;-)
What about using text_poke() for BUG_ON and __text_poke() for returning an error ? This may not change caller sites.
Thank you,
-- Masami HIRAMATSU IT Management Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@hitachi.com
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