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On Wed, 5 Jul 2006 11:32:59 +0200 Ingo Molnar <mingo@elte.hu> wrote: > > * Andrew Morton <akpm@osdl.org> wrote: > > > shrinks fs/select.o by eight bytes. (More than I expected). So it > > does appear to be a space win, but a pretty slim one. > > there are 855 calls to these functions in the allyesconfig vmlinux i > did, and i measured a combined size reduction of 34791 bytes. That > averages to a 40 bytes win per call site. (on i386.) > Yes, but that lumps all three together. init_waitqueue_head() is obviously the porky one. And it's porkier with CONFIG_DEBUG_SPINLOCK and CONFIG_LOCKDEP, which isn't the case to optimise for. With the debug options turned off, even init_waitqueue_head() becomes just three assignments, similar to init_waitqueue_entry() and init_waitqueue_func_entry(). All pretty marginal. - 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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