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[23.116.43.216]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7e695d176dasm1812846a34.16.2026.05.29.09.57.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2026 09:57:04 -0700 (PDT) From: Ravi Jonnalagadda To: sj@kernel.org, akinobu.mita@gmail.com, damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: akpm@linux-foundation.org, corbet@lwn.net, bijan311@gmail.com, ajayjoshi@micron.com, honggyu.kim@sk.com, yunjeong.mun@sk.com, ravis.opensrc@gmail.com Subject: [RFC PATCH 3/6] mm/damon/sysfs: install perf_events on apply Date: Fri, 29 May 2026 09:56:37 -0700 Message-ID: <20260529165640.820-4-ravis.opensrc@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260529165640.820-1-ravis.opensrc@gmail.com> References: <20260529165640.820-1-ravis.opensrc@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Stat-Signature: 9hmfywpsbwojw3ird3fhik81gw83e6km X-Rspam-User: X-Rspamd-Queue-Id: B18771C0008 X-HE-Tag: 1780073826-128124 X-HE-Meta: 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 NT6l3Gkl vicplInzyS2ISd8hXu06ci3Flyx2ELs1eRdajDysROLxW7NYFfG9UozHaJMk4WfC1Jva8IJK2zLDYneeJTi4NXnds6hevRg5Unu9xRslnB7ICgTDQhYi8dID/8o5NLB/+aBF8HfPemyB6fzmGQDRP0MM01rwN9PIj5NUu4RS+qG75mqNXbkkkzvRlzWW4nlW6xtK2/QtstzVMAZHEbNV8SM1qGiVvwOEpeK28xCfm+1TKfD6WrGJUYyErBnxd2dmiZ3kApUJL/jJP1mRA+bqezxXWmg1kzgb1bmyAqxF14bzdBDInK+5uRCinrpHlFzcCYu8j/weH6YNMUirq5KsyEtuem1ks4aZGRWzCLgmF2/b4MVmZtWbzOyLro3ZJvwZp54IqTz0JA8QxmYj7klafiOjPEhQDf4xWFDJKzDB83waHH3PQJh8CJKSMArHqLILi85OV3YaM4kGwsZj2juxZpjfGzpQqf6iy9MC1qPnCKen9ghlqk/gZ4JoKc/7h+5a1gdiYnc/ueLcLoteYHN2ZYrDWCLtUm4X0zx4DaWFDiqWWPxdg5efK2yfpYFCdWRcRtgVzRdgqkPrzXcvnzpvIGRZ0YbCoUDX3RHlUMJ1zh+xPbvjucR3LXndiQ1Ktj+HXOnaTIbHrMVd6foHRjZMc3DJfQv8h6rypQqQ9mM4VrWAzw4ZzEif5IZ3PNwMIsFJ3DNALWgj6CBib9bhaytnha78G2CgPTv86YyYrjxCxyhm335ifD7aCfSrt3ZYbdYC77whCHAvYVhOG3WCTmYIlCYXekCa58QiuPo8svU3YIlz+V/5Gd3G2Vsq+gg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Call damon_sysfs_add_perf_events() from damon_sysfs_apply_inputs() so events configured under sample/perf_events/ get attached to the damon_ctx when the kdamond starts. Signed-off-by: Ravi Jonnalagadda --- mm/damon/sysfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 9f71871a249d8..bc4a931fe3f0a 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -2092,6 +2092,9 @@ static int damon_sysfs_apply_inputs(struct damon_ctx *ctx, return err; err = damon_sysfs_set_sample_control(&ctx->sample_control, sys_ctx->attrs->sample); + if (err) + return err; + err = damon_sysfs_add_perf_events(ctx, sys_ctx->attrs->sample); if (err) return err; err = damon_sysfs_add_targets(ctx, sys_ctx->targets); -- 2.43.0