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[70.53.55.167]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8363198b0fbsm374959685a.50.2025.09.19.11.39.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Sep 2025 11:39:32 -0700 (PDT) Date: Fri, 19 Sep 2025 14:39:31 -0400 (EDT) From: John Kacur To: Sebastian Andrzej Siewior cc: linux-rt-users@vger.kernel.org, Clark Williams , Steven Rostedt Subject: Re: [PATCH 04/10] queuelat, rt-migrate-test: Use tracefs for tracing In-Reply-To: <20250903111717.1391196-5-bigeasy@linutronix.de> Message-ID: <3b3623d2-9fc3-a04e-6cf2-397ac9957e19@redhat.com> References: <20250903111717.1391196-1-bigeasy@linutronix.de> <20250903111717.1391196-5-bigeasy@linutronix.de> Precedence: bulk X-Mailing-List: linux-rt-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII On Wed, 3 Sep 2025, Sebastian Andrzej Siewior wrote: > Instead of looking at all possible folders underneath debugfs for > tracing, look directly at /sys/kernel/tracing/. It no longer lives > underneath debugfs. > > Signed-off-by: Sebastian Andrzej Siewior > --- > src/queuelat/queuelat.c | 2 +- > src/rt-migrate-test/rt-migrate-test.c | 4 +--- > 2 files changed, 2 insertions(+), 4 deletions(-) > > diff --git a/src/queuelat/queuelat.c b/src/queuelat/queuelat.c > index 28cf7abe83ae6..5a3d0c61a3fc4 100644 > --- a/src/queuelat/queuelat.c > +++ b/src/queuelat/queuelat.c > @@ -331,7 +331,7 @@ static void trace_open(void) > { > int fd; > > - fd = open("/sys/kernel/debug/tracing/trace_marker", O_RDWR); > + fd = open("/sys/kernel/tracing/trace_marker", O_RDWR); > > if (fd == -1) { > perror("open"); > diff --git a/src/rt-migrate-test/rt-migrate-test.c b/src/rt-migrate-test/rt-migrate-test.c > index 8afe0834905bd..ccc2caf77d735 100644 > --- a/src/rt-migrate-test/rt-migrate-test.c > +++ b/src/rt-migrate-test/rt-migrate-test.c > @@ -39,9 +39,7 @@ static void setup_ftrace_marker(void) > { > struct stat st; > char *files[] = { > - "/sys/kernel/debug/tracing/trace_marker", > - "/debug/tracing/trace_marker", > - "/debugfs/tracing/trace_marker", > + "/sys/kernel/tracing/trace_marker", > }; > int ret; > unsigned int i; > -- > 2.51.0 > > Signed-off-by: John Kacur