On Mon, 18 Apr 2016 18:15:04 -0700
Alexei Starovoitov wrote:
> On 4/18/16 3:16 PM, Steven Rostedt wrote:
> Yes. That what I referred to in below 'a struct to pass args'...
> But, fine, will try to optimize the size further.
> Frankly much bigger .text savings will come from combining
> trace_eve
On 4/18/16 3:16 PM, Steven Rostedt wrote:
On Mon, 18 Apr 2016 14:43:07 -0700
Alexei Starovoitov wrote:
I was worried about this too, but single 'if' and two calls
(as in commit 98b5c2c65c295) is a better way, since it's faster, cleaner
and doesn't need to refactor the whole perf_trace_buf_sub
On Mon, 18 Apr 2016 14:43:07 -0700
Alexei Starovoitov wrote:
> I was worried about this too, but single 'if' and two calls
> (as in commit 98b5c2c65c295) is a better way, since it's faster, cleaner
> and doesn't need to refactor the whole perf_trace_buf_submit() to pass
> extra event_call argume
On 4/18/16 1:29 PM, Steven Rostedt wrote:
On Mon, 4 Apr 2016 21:52:48 -0700
Alexei Starovoitov wrote:
introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be
attached to tracepoints.
The tracepoint will copy the arguments in the per-cpu buffer and pass
it to the bpf program as its f
On Mon, 4 Apr 2016 21:52:48 -0700
Alexei Starovoitov wrote:
> introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be
> attached to tracepoints.
> The tracepoint will copy the arguments in the per-cpu buffer and pass
> it to the bpf program as its first argument.
> The layout of the fi
On 4/5/16 11:16 AM, Peter Zijlstra wrote:
On Tue, Apr 05, 2016 at 11:09:30AM -0700, Alexei Starovoitov wrote:
@@ -67,6 +69,14 @@ perf_trace_##call(void *__data, proto)
\
\
{ ass
On Tue, Apr 05, 2016 at 11:09:30AM -0700, Alexei Starovoitov wrote:
> >>@@ -67,6 +69,14 @@ perf_trace_##call(void *__data, proto)
> >>\
> >>\
> >>{ assign; }
On 4/5/16 7:18 AM, Peter Zijlstra wrote:
On Mon, Apr 04, 2016 at 09:52:48PM -0700, Alexei Starovoitov wrote:
introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be
attached to tracepoints.
More specifically the perf tracepoint handler, not tracepoints directly.
yes. perf tracepoi
On Mon, Apr 04, 2016 at 09:52:48PM -0700, Alexei Starovoitov wrote:
> introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be
> attached to tracepoints.
More specifically the perf tracepoint handler, not tracepoints directly.
> The tracepoint will copy the arguments in the per-cpu buff
introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be
attached to tracepoints.
The tracepoint will copy the arguments in the per-cpu buffer and pass
it to the bpf program as its first argument.
The layout of the fields can be discovered by doing
'cat /sys/kernel/debug/tracing/events/sc
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