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Subject: Re: [RFC PATCH 3/8] perf: Init/fini PMU specific data
To:     Andi Kleen <ak@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>
Cc:     kan.liang@linux.intel.com, mingo@redhat.com, acme@kernel.org,
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From:   Alexey Budankov <alexey.budankov@linux.intel.com>
Organization: Intel Corp.
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Date:   Mon, 2 Dec 2019 19:38:00 +0300
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On 02.12.2019 17:59, Andi Kleen wrote:
>>
>> This is atricous crap. Also it is completely broken for -RT.
> 
> Well can you please suggest how you would implement it instead?

FWIW,
An alternative could probably be to make task_ctx_data allocations
on the nearest context switch in, and obvious drawback is slowdown on
this critical path, but it could be amortized by static branches.

Thanks,
Alexey