Messages in this thread | | | Date | Tue, 16 Sep 2003 21:49:29 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] add likely around access_ok for uaccess |
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Hi!
> while trying to figure out why sysv msg is around 30% slower than pipes > for data transfers I noticed that gcc's autodetection (3.2.2) guesses > the "if(access_ok())" tests in uaccess.h wrong and puts the error memset > into the direct path and the copy out of line. > > The attached patch adds likely to the tests - any objections? What about > the archs except i386?
How much speedup did you gain? Pavel
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