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Date: Tue, 13 Oct 2009 08:29:39 +0200 From: Ingo Molnar <mingo@...e.hu> To: Huang Ying <ying.huang@...el.com> Cc: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>, "H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 6/6] mce-inject: use injected mce only during faked handler call * Huang Ying <ying.huang@...el.com> wrote: > I have talked with Ingo about this patch. But he has different idea > about MCE log ring buffer and he didn't want to merge the patch even > as an urgent bug fixes. It seems that another re-post can not convince > him. Correct. The fixes are beyond what we can do in .32 - and for .33 i outlined (with a patch) that we should be using not just the ftrace ring-buffer (like your patch did) but perf events to expose MCE events. That brings MCE events to a whole new level of functionality. Event injection support would be an interesting new addition to kernel/perf_event.c: non-MCE user-space wants to inject events as well - both to simulate rare events, and to define their own user-space events. Is there any technical reason why we wouldnt want to take this far superior approach? 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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