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Date: Sat, 8 Aug 2009 14:03:15 +0200 From: Ingo Molnar <mingo@...e.hu> To: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: "Metzger, Markus T" <markus.t.metzger@...el.com>, "tglx@...utronix.de" <tglx@...utronix.de>, "hpa@...or.com" <hpa@...or.com>, "markus.t.metzger@...il.com" <markus.t.metzger@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Paul Mackerras <paulus@...ba.org> Subject: Re: [PATCH] perf_counter: Fix a race on perf_counter_ctx * Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote: > On Fri, 2009-08-07 at 13:33 +0200, Ingo Molnar wrote: > > Peter, any ideas? > > > > [ 995.556131] ------------[ cut here ]------------ > > [ 995.557128] WARNING: at kernel/perf_counter.c:1191 __perf_counter_task_sched_out+0x48/0x6b() > > > Some yeah... This patch fixed both the warning i was getting during stress-tests, and it also solved the hard lockup i was getting with the latest BTS patch. ( perf record never actually finishes even short workloads, due to the flood of kernel events coming in faster than it can record, so we grow and grow the perf.data - but that's a different matter, it does not lock up anymore. ) Markus, does latest -tip work fine for you, is the lockup fixed on your side as well? Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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