Messages in this thread |  | | | Date | Thu, 27 Nov 2008 14:49:32 +0100 | | From | Andi Kleen <> | | Subject | Re: [patch 05/24] perfmon: X86 generic code (x86) |
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> What about a thread doing this and another one in the middle of read the buffer?
I assume that uses locks. Locking between threads is easy.
> > Or what about a thread trying to reset the buffer while you're processing an PMU > interrupt on another CPU. I know each buffer is per-CPU, but that does not > prevent two threads for trying to operate on it at the same time from > different CPUs.
That happens per CPU.
-Andi
-- ak@linux.intel.com
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