From: Steven Rostedt <rostedt@goodmis.org>
To: SeongJae Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
damon@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 18/28] mm/damon: trace probe_hits
Date: Wed, 13 May 2026 20:32:37 -0400 [thread overview]
Message-ID: <20260513203237.3b1b3286@gandalf.local.home> (raw)
In-Reply-To: <20260514000611.147809-1-sj@kernel.org>
On Wed, 13 May 2026 17:06:10 -0700
SeongJae Park <sj@kernel.org> wrote:
> Btw, if you don't mind, may I ask your opinion about the name having '_v2'
> suffix? I chose that as an RFC phase temporal name that doesn't break the
> compatibility, planning to give it a better name later. But I start feeling
> just extending the original one might be another option because tracepoints are
> not strict stable ABI to my understanding, and the change of the TP_prink
> format should be simple enough (append the probe_hits= part) that the user
> space could reasonably deal with.
It's only a stable ABI if some useful userspace tooling depends on it.
Otherwise, feel free to change.
Nothing really should be parsing the TP_printk() format part as it is
really inefficient to do so. That's why I created libtraceevent and
libtracefs to do the parsing of the raw data for you.
-- Steve
next prev parent reply other threads:[~2026-05-14 0:32 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 14:36 [RFC PATCH v2 00/28] mm/damon: introduce data attributes monitoring SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 01/28] mm/damon/core: introduce struct damon_probe SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 02/28] mm/damon/core: embed damon_probe objects in damon_ctx SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 03/28] mm/damon/core: introduce damon_filter SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 04/28] mm/damon/core: commit probes SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 05/28] mm/damon/core: introduce damon_region->probe_hits SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 06/28] mm/damon/core: introduce damon_ops->apply_probes SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 07/28] mm/damon/core: do data attributes monitoring SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 08/28] mm/damon/paddr: support " SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 09/28] mm/damon/sysfs: implement probes dir SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 10/28] mm/damon/sysfs: implement probe dir SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 11/28] mm/damon/sysfs: implement filters directory SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 12/28] mm/damon/sysfs: implement filter dir SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 13/28] mm/damon/sysfs: implement filter dir files SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 14/28] mm/damon/sysfs: setup probes on DAMON core API parameters SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 15/28] mm/damon/sysfs-schemes: implement tried_regions/<r>/probes/ SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 16/28] mm/damon/sysfs-schemes: implement probe dir SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 17/28] mm/damon/sysfs-schemes: implement probe/hits file SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 18/28] mm/damon: trace probe_hits SeongJae Park
2026-05-13 18:07 ` Steven Rostedt
2026-05-14 0:06 ` SeongJae Park
2026-05-14 0:32 ` Steven Rostedt [this message]
2026-05-14 2:08 ` SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 19/28] selftests/damon/sysfs.sh: test probes dir SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 20/28] Docs/mm/damon/design: document data attributes monitoring SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 21/28] Docs/admin-guide/mm/damon/usage: " SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 22/28] mm/damon/core: introduce DAMON_FILTER_TYPE_MEMCG SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 23/28] mm/damon/paddr: support DAMON_FILTER_TYPE_MEMCG SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 24/28] mm/damon/sysfs: add filters/<F>/path file SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 25/28] mm/damon/sysfs-schemes: move memcg_path_to_id() to sysfs-common SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 26/28] mm/damon/sysfs: setup damon_filter->memcg_id from path SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 27/28] Docs/mm/damon/design: update for memcg damon filter SeongJae Park
2026-05-12 14:36 ` [RFC PATCH v2 28/28] Docs/admin-guide/mm/damon/usage: " SeongJae Park
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