Messages in this thread | | | Subject | Re: [PATCH 11/13] Core Resource Allocation | From | Roland Dreier <> | Date | Fri, 17 Nov 2006 08:54:06 -0800 |
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> +static u32 next_random(u32 rand) > +{ > + u32 y, ylast; > + > + y = rand; > + ylast = y; > + y = (y * 69069) & 0xffffffff; > + y = (y & 0x80000000) + (ylast & 0x7fffffff); > + if ((y & 1)) > + y = ylast ^ (y > 1) ^ (2567483615UL); > + else > + y = ylast ^ (y > 1); > + y = y ^ (y >> 11); > + y = y ^ ((y >> 7) & 2636928640UL); > + y = y ^ ((y >> 15) & 4022730752UL); > + y = y ^ (y << 18); > + return y; > +}
How about just using the kernel's random32()?
I haven't read the code really so I don't understand what's being randomized here, but random32() should be more than good enough for a typical randomized algorithm().
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