Messages in this thread | | | Subject | Re: [PATCH] Prevent nested interrupts when the IRQ stack is near overflowing v2 | From | Peter Zijlstra <> | Date | Thu, 25 Mar 2010 19:23:58 +0100 |
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On Thu, 2010-03-25 at 19:21 +0100, Peter Zijlstra wrote: > On Thu, 2010-03-25 at 11:01 -0700, Linus Torvalds wrote: > > Are there any cases around > > that still have busy-loop delays based on real-time in their irq handlers? > > I simply don't know. > > I recently found a few in drivers/net/ there's all kinds of funny stuff > in there.. not sure how common the matching hardware is though. > > One thing we could do is instrument jiffies to yell when its used from > hardirq context and fix up these things.
Also, Arjan mentioned he wanted to sweep the kernel for jiffies users and convert them to timer interfaces..
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