From: Steven Rostedt <rostedt@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Mark Rutland <mark.rutland@arm.com>,
Andrey Grodzovsky <andrey.grodzovsky@crowdstrike.com>
Subject: [IGIT PULL] ftrace: Update for v7.1
Date: Tue, 14 Apr 2026 06:10:34 -0400 [thread overview]
Message-ID: <20260414061034.7d94bd16@robin> (raw)
Linus,
ftrace updates for 7.1:
- Speed up ftrace_lookup_symbols() for single lookups
The kallsyms lookup in ftrace_lookup_symbols() does a linear search over
each symbol. This is fine when it must match multiple strings, but when
there's only a single string being searched for, using a binary search is
much more efficient. When a single string is passed in to search, use the
binary search method.
Please pull the latest ftrace-v7.1 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
ftrace-v7.1
Tag SHA1: d8d55b3c7933467836361e43916fc08c083d74cf
Head SHA1: 93e8fd1a565eb5d0c0bbcb18d00095ad255b6ecb
Andrey Grodzovsky (1):
ftrace: Use kallsyms binary search for single-symbol lookup
----
kernel/trace/ftrace.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
---------------------------
reply other threads:[~2026-04-14 10:10 UTC|newest]
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