Messages in this thread | | | Date | Wed, 17 Mar 2021 14:55:36 +0100 | From | Peter Zijlstra <> | Subject | Re: [tip: locking/urgent] locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling |
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On Wed, Mar 17, 2021 at 09:43:20AM -0400, Waiman Long wrote:
> Using gcc 8.4.1, the generated __mutex_lock function has the same size (with > last instruction at offset +5179) with or without this patch. Well, you can > say that this patch is an no-op wrt generated code.
OK, then GCC has gotten better. Because back then I tried really hard but it wouldn't remove the if (ww_ctx) branches unless I had that extra const bool argument.
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