Re: [PATCH] 2.6.18-rt7: fix more issues with 32-bit cycles_t in latency_trace.c (take 3)
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From: Sergei Shtylyov <hidden>
Date: 2006-12-04 12:27:43
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Hello. Ingo Molnar wrote:
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What was the destiny of that patch? I haven't seen it accepted, haven't seen any comments... while this is not a mere warning fix. What am I expected to do to get it accepted -- recast it against 2.6.19-rt1?
i'd suggest to redo it - but please keep it simple and clean. Those dozens of casts to u64 are quite ugly.
Alas, there's *nothing* I can do about it with 32-bit cycles_t. And if you look at the kernel, this is not the only case of such "ugliness", look at this commit for example: http://www.kernel.org/git/?p=linux/kernel/git/paulus/powerpc.git;a=commit;h=685143ac1f7a579a3fac9c7f2ac8f82e95af6864
Why is cycles_t 32-bits on some of the arches to begin with?
I guess this was done for speed reasons. That's not a qustion for me although...
Ingo
WBR, Sergei