On Tue, Mar 12, 2024 at 02:02:30PM -0700, Andrii Nakryiko wrote:

This patch set implements two speed ups for uprobe/uretprobe runtime execution
path for some common scenarios: BPF-only uprobes (patches #1 and #2) and
system-wide (non-PID-specific) uprobes (patch #3). Please see individual
patches for details.

Given I haven't worked with uprobe code before, I'm unfamiliar with
conventions in this subsystem, including which kernel tree patches should be
sent to. For now I based all the changes on top of bpf-next/master, which is
where I tested and benchmarked everything anyways. Please advise what should
I use as a base for subsequent revision. Thanks.

Andrii Nakryiko (3):
  uprobes: encapsulate preparation of uprobe args buffer
  uprobes: prepare uprobe args buffer lazily
  uprobes: add speculative lockless system-wide uprobe filter check

nice cleanup and speed up, lgtm

Reviewed-by: Jiri Olsa <jolsa@kernel.org>

jirka

 kernel/trace/trace_uprobe.c | 103 ++++++++++++++++++++++--------------
 1 file changed, 63 insertions(+), 40 deletions(-)

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2.43.0