Andrii Nakryiko d4dfc5700e bpf: pass whole link instead of prog when triggering raw tracepoint ... Instead of passing prog as an argument to bpf_trace_runX() helpers, that are called from tracepoint triggering calls, store BPF link itself (struct bpf_raw_tp_link for raw tracepoints). This will allow to pass extra information like BPF cookie into raw tracepoint registration. Instead of replacing `struct bpf_prog *prog = __data;` with corresponding `struct bpf_raw_tp_link *link = __data;` assignment in `__bpf_trace_##call` I just passed `__data` through into underlying bpf_trace_runX() call. This works well because we implicitly cast `void *`, and it also avoids naming clashes with arguments coming from tracepoint's "proto" list. We could have run into the same problem with "prog", we just happened to not have a tracepoint that has "prog" input argument. We are less lucky with "link", as there are tracepoints using "link" argument name already. So instead of trying to avoid naming conflicts, let's just remove intermediate local variable. It doesn't hurt readibility, it's either way a bit of a maze of calls and macros, that requires careful reading. Acked-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Message-ID: <20240319233852.1977493-3-andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2024-03-19 23:05:33 -07:00
..
events	Networking changes for 6.9.	2024-03-12 17:44:08 -07:00
misc	NFSD: Add callback operation lifetime trace points	2024-03-01 09:12:15 -05:00
stages	tracing: Error if a trace event has an array for a __field()	2023-04-03 11:52:51 -04:00
bpf_probe.h	bpf: pass whole link instead of prog when triggering raw tracepoint	2024-03-19 23:05:33 -07:00
define_custom_trace.h
define_trace.h
perf.h	perf/tracing: Use stage6 of tracing to not duplicate macros	2023-01-25 10:31:24 -05:00
syscall.h
trace_custom_events.h
trace_events.h