Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map

From	"Wangnan (F)" <wangnan0@huawei.com>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map
Date	2015-07-17 14:20 +0200
Message-ID	<pNcMp-59N-7@gated-at.bofh.it> (permalink)
References	(3 earlier) <pNc02-3ZN-1@gated-at.bofh.it> <pNc9H-4aY-3@gated-at.bofh.it> <pNcjo-4ml-7@gated-at.bofh.it> <pNct4-4xC-21@gated-at.bofh.it> <pNcCL-4Yl-27@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 2015/7/17 20:02, Peter Zijlstra wrote:
> On Fri, Jul 17, 2015 at 07:54:55PM +0800, Wangnan (F) wrote:
>> Thanks. In next version we will introduce a new function which do oppsite
>> thing to
>> perf_event_release_kernel() in perf/event/core.c, then fetch the event
>> before fdput.
> perf_event_get() as proposed, with the addition of the refcount
> increment inside the fdget/fdput() is fine.
>
> Note that the _get() name already implies a refcount increment.

OK, you'll see it in v2.

Thank you.

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Thread

[RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map kaixu xia <xiakaixu@huawei.com> - 2015-07-17 12:50 +0200
  Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map Peter Zijlstra <peterz@infradead.org> - 2015-07-17 13:10 +0200
    Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to  map "Wangnan (F)" <wangnan0@huawei.com> - 2015-07-17 13:30 +0200
      Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to  map "Wangnan (F)" <wangnan0@huawei.com> - 2015-07-17 13:40 +0200
        Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map Peter Zijlstra <peterz@infradead.org> - 2015-07-17 13:50 +0200
          Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to  map "Wangnan (F)" <wangnan0@huawei.com> - 2015-07-17 14:00 +0200
            Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map Peter Zijlstra <peterz@infradead.org> - 2015-07-17 14:10 +0200
              Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to  map "Wangnan (F)" <wangnan0@huawei.com> - 2015-07-17 14:20 +0200
  Re: [RFC PATCH 3/6] bpf: Save the pointer to struct perf_event to map Peter Zijlstra <peterz@infradead.org> - 2015-07-17 13:40 +0200

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