Messages in this thread | | | From | Mathieu Desnoyers <> | Subject | [PATCH v4 0/5] Faultable Tracepoints | Date | Mon, 20 Nov 2023 15:54:13 -0500 |
| |
Wire up the system call tracepoints with Tasks Trace RCU to allow the ftrace, perf, and eBPF tracers to handle page faults.
This series does the initial wire-up allowing tracers to handle page faults, but leaves out the actual handling of said page faults as future work.
I have tested this against a feature branch of lttng-modules which implements handling of page faults for the filename argument of the openat(2) system call.
This series is based on kernel v6.6.2.
Thanks,
Mathieu
Mathieu Desnoyers (5): tracing: Introduce faultable tracepoints (v4) tracing/ftrace: Add support for faultable tracepoints tracing/bpf-trace: add support for faultable tracepoints tracing/perf: add support for faultable tracepoints tracing: convert sys_enter/exit to faultable tracepoints
Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: bpf@vger.kernel.org Cc: Joel Fernandes <joel@joelfernandes.org>
include/linux/tracepoint-defs.h | 14 +++++ include/linux/tracepoint.h | 88 ++++++++++++++++++++++--------- include/trace/bpf_probe.h | 21 ++++++-- include/trace/define_trace.h | 7 +++ include/trace/events/syscalls.h | 4 +- include/trace/perf.h | 27 ++++++++-- include/trace/trace_events.h | 73 ++++++++++++++++++++++++-- init/Kconfig | 1 + kernel/trace/bpf_trace.c | 10 +++- kernel/trace/trace_events.c | 26 +++++++--- kernel/trace/trace_fprobe.c | 5 +- kernel/trace/trace_syscalls.c | 92 +++++++++++++++++++++++---------- kernel/tracepoint.c | 58 +++++++++++---------- 13 files changed, 325 insertions(+), 101 deletions(-)
-- 2.25.1
| |