Messages in this thread | | | From | Rusty Russell <> | Subject | Re: [PATCH] Futex Generalization Patch | Date | Thu, 11 Apr 2002 23:55:05 +1000 |
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In message <20020410211348.AB5E93FE06@smtp.linux.ibm.com> you write: > --) There is more overhead in the wakeup and the wait because I need to > move from the fd to the filestruct which is always some lookup and > I have to verify that the file descriptor is actually a valid /dev/futex > file (yikes).
Hmmm... verify on the FUTEX_AWAIT: you can maybe hold the struct file directly (or maybe not).
> In FUTEX_AWAIT inteprest it as { short fd, short sig }; > There should be no limitation by casting it to shorts ?
No, that's bad. But I thought there was already a way to set what signal occurred instead of SIGIO. Is that not per-fd?
Rusty. -- Anyone who quotes me in their sig is an idiot. -- Rusty Russell. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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