From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Qerogram <qerogram@naver.com>
Cc: namhyung@kernel.org, linux-perf-users@vger.kernel.org,
linux-kernel@vger.kernel.org, irogers@google.com
Subject: Re: [PATCH perf-tools-next] perf list: Avoid repeated strlen when escaping JSON strings
Date: Sun, 13 Sep 2026 18:45:36 -0300 [thread overview]
Message-ID: <aqcZgKhnWFAaVf5i@x2> (raw)
In-Reply-To: <20260910123839.72285-1-qerogram@naver.com>
On Thu, Sep 10, 2026 at 09:38:39PM +0900, Qerogram wrote:
> The %S conversion in fix_escape_fprintf() calls strlen(s) in the loop
> condition while escaping each character. GCC 14.2.0 retains this call
> inside the loop in a normal DEBUG=0 (-O3) perf build, repeatedly scanning
> the whole string.
Thanks, applied to perf-tools-next, for v7.4.
- Arnaldo
prev parent reply other threads:[~2026-09-13 21:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 12:38 [PATCH perf-tools-next] perf list: Avoid repeated strlen when escaping JSON strings Qerogram
2026-09-10 12:55 ` sashiko-bot
2026-09-13 21:45 ` Arnaldo Carvalho de Melo [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aqcZgKhnWFAaVf5i@x2 \
--to=acme@kernel.org \
--cc=irogers@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=namhyung@kernel.org \
--cc=qerogram@naver.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.