Messages in this thread |  | | | Subject | Re: [PATCH 1/3] perf_event: fix race in perf_swevent_get_recursion_context() | | From | Peter Zijlstra <> | | Date | Mon, 18 Jan 2010 14:55:58 +0100 |
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On Mon, 2010-01-18 at 21:42 +0800, Xiao Guangrong wrote: > It only disable preemption in perf_swevent_get_recursion_context() > it can't avoid race of hard-irq and NMI > > In this patch, we use atomic operation to avoid it and reduce > cpu_ctx->recursion size, it also make this patch no need diable > preemption
Uhm why?
This patch looks terminally broken
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