Messages in this thread | | | Date | Tue, 25 Jul 2000 20:25:36 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] removal of unnecessary irq save/restore in tasklet_hi_schedule |
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On Wed, 26 Jul 2000, Daniel Marmier wrote: > > If my understanding is correct : > a) tasklet_hi_schedule is to be called by hardirqs > b) hardirqs cannot be re-entered
No, hard-irq's _can_ be re-entered. One hard-irq cannot re-enter itself, but you can have _different_ irq's enter each other. As such, to avoid deadlock in on the local CPU the current code is needed..
Linus
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