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Goncalves" , Bart Wensley , Crystal Wood , linux-rt-users Subject: Re: [PATCH v2] rt-tests: hwlatdetect: Restore tracing parameters Message-ID: <20261021064844.SBwm7htb@linutronix.de> References: <20261019102909.3339372-1-costa.shul@redhat.com> <20261020101646.Xb1lEbqY@linutronix.de> X-Mailing-List: linux-rt-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On 2026-10-20 20:39:27 [+0300], Costa Shulyupin wrote: > On Tue, 20 Oct 2026 at 13:16, Sebastian Andrzej Siewior > wrote: > > Could you please get rid of the DebugFS class in it? > > The tracing folder should be auto-mounted at /sys/kernel/tracing by the > > distribution. Currently it is also auto mounted at > > /sys/kernel/debug/tracing if something is accessing this folder and this > > is subject to vanish. Mounting it does not help then either. > > In the OpenShift/Kubernetes containers tracefs by default is at > /host/sys/kernel/tracing and /host/sys/kernel/debug/tracing. > Therefore, only the DebugFS mount and umount are redundant. Interesting. But how does this even work without extra glue around it? Is this the global tracefs or per-namespace tracefs? Does this still work with CONFIG_TRACEFS_AUTOMOUNT_DEPRECATED=n ? Be aware that this is the only tool in rt-tests that still uses the debugfs path. > Costa Sebastian