On Sat, 2005-03-26 at 12:34 +0100, Willy Tarreau wrote: > Marcelo, > > just another one and that's all. Zachary Amsden found an unconditional > write to a debug register in the signal delivery path which is only > needed when we use a breakpoint. This is a very expensive operation on > x86, and doing it conditionnaly enhanced signal delivery speed by 33% > for him.
this sounds rather risky for this late in the game; heck it sounds risky in 2.4 period. This code changed a lot in 2.6 so just a plain backport is by no means risk free, while the effect of a wrong debug register can even have security impact. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
