From mboxrd@z Thu Jan 1 00:00:00 1970 From: mingo@elte.hu (Ingo Molnar) Date: Sun, 29 May 2011 22:17:13 +0200 Subject: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering In-Reply-To: <1306345402.21578.100.camel@twins> References: <20110517131902.GF21441@elte.hu> <1305807728.11267.25.camel@gandalf.stny.rr.com> <1306254027.18455.47.camel@twins> <20110524195435.GC27634@elte.hu> <20110525150153.GE29179@elte.hu> <1306345402.21578.100.camel@twins> Message-ID: <20110529201713.GA25789@elte.hu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Peter Zijlstra wrote: > But face it, you can argue until you're blue in the face, That is not a technical argument though - and i considered and answered every valid technical argument made by you and Thomas. You were either not able to or not willing to counter them. > [...] but both tglx and I will NAK any and all patches that extend > perf/ftrace beyond the passive observing role. The thing is, perf is *already* well beyond the 'passive observer' role: we already generate lots of 'action' in response to events. We generate notification signals, we write events - all of which can (and does) modify program behavior. So what's your point? There's no "passive observer" role really - it's apparently just that you dislike this use of instrumentation while you approve of other uses. Thanks, Ingo