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Date: Fri, 9 May 2008 00:27:07 +0100 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Ingo Molnar <mingo@...e.hu>, "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>, Andi Kleen <andi@...stfloor.org>, Matthew Wilcox <matthew@....cx>, LKML <linux-kernel@...r.kernel.org>, Alexander Viro <viro@....linux.org.uk>, Andrew Morton <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: [patch] speed up / fix the new generic semaphore code (fix AIM7 40% regression with 2.6.26-rc1) > 380 down <= lock_kernel <= tty_release <= __fput < > 422 down <= lock_kernel <= chrdev_open <= __dentry_open < > > rather than the write routines. But it may be that Ingo was just profiling > two different sections, and it's really all of them. tty release is probably a few months away from getting cured - I'm afraid it will almost certainly be the very last user of the BKL in tty to get fixed as it depends on everything else being sanely locked. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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