Re: [tip:perfcounters/core] perf_counter: x86: Fix call-chain support to use NMI-safe methods
From
Peter Zijlstra <>
Date
Mon, 15 Jun 2009 20:51:57 +0200
On Mon, 2009-06-15 at 14:48 -0400, Mathieu Desnoyers wrote: > we should not care that much about the performance hit of > saving/restoring the cr2 register at each nmi entry/exit.
But we do, perf counters very much cares about nmi performance.