Hi Jiri,
On Tue Sep 24, 2019 at 10:33 AM Jiri Olsa wrote:
> On Tue, Sep 17, 2019 at 06:30:52AM -0700, Daniel Xu wrote:
>
> SNIP
>
> > + PERF_FORMAT_MAX = 1U << 5, /* non-ABI */
> > };
> >
> > #define PERF_ATTR_SIZE_VER064 /* sizeof first published
> > struct */
On Tue, Sep 17, 2019 at 06:30:52AM -0700, Daniel Xu wrote:
SNIP
> + PERF_FORMAT_MAX = 1U << 5, /* non-ABI */
> };
>
> #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
> diff --git a/kernel/events/core.c b/kernel/events/core.c
> index
Hi Daniel,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on bpf-next/master]
url:
https://github.com/0day-ci/linux/commits/Daniel-Xu/perf-core-Add-PERF_FORMAT_LOST-read_format/20190917-213515
base:
On Tue Sep 17, 2019 at 10:32 PM kbuild test robot wrote:
> All errors (new ones prefixed by >>):
>
>kernel/events/core.c: In function 'perf_event_lost':
> >> kernel/events/core.c:4753:11: error: implicit declaration of function
> >> 'perf_kprobe_missed'; did you mean 'perf_release'?
> >>
Hi Daniel,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on bpf-next/master]
url:
https://github.com/0day-ci/linux/commits/Daniel-Xu/perf-core-Add-PERF_FORMAT_LOST-read_format/20190917-213515
base:
It's useful to know kprobe's nmissed count. For example with tracing
tools, it's important to know when events may have been lost. debugfs
currently exposes a control file to get this information, but it is not
compatible with probes registered with the perf API.
While bpf programs may be able
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