linux-kernel - [PATCH v2 0/3] uprobes: two common case speed ups

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Message-ID: <20240318181728.2795838-1-andrii@kernel.org>
Date: Mon, 18 Mar 2024 11:17:25 -0700
From: Andrii Nakryiko <andrii@...nel.org>
To: linux-trace-kernel@...r.kernel.org,
	rostedt@...dmis.org,
	mhiramat@...nel.org
Cc: bpf@...r.kernel.org,
	mathieu.desnoyers@...icios.com,
	linux-kernel@...r.kernel.org,
	oleg@...hat.com,
	jolsa@...nel.org,
	Andrii Nakryiko <andrii@...nel.org>
Subject: [PATCH v2 0/3] uprobes: two common case speed ups

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.

v1->v2:
  - rebased onto trace/core branch of tracing tree, hopefully I guessed right;
  - simplified user_cpu_buffer usage further (Oleg Nesterov);
  - simplified patch #3, just moved speculative check outside of lock (Oleg);
  - added Reviewed-by from Jiri Olsa.

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

 kernel/trace/trace_uprobe.c | 103 +++++++++++++++++++++---------------
 1 file changed, 59 insertions(+), 44 deletions(-)

-- 
2.43.0