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Fri, 25 Jul 2025 11:10:43 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHufbB64f8RuHQiNkgOdR8p6YIkhGYwXkGJN//iXgbepa1IZIgHunzAgRbyADIOcjBaElsngw== X-Received: by 2002:a05:6214:2421:b0:707:2ae1:8bde with SMTP id 6a1803df08f44-7072ae18e7fmr8907346d6.1.1753467042781; Fri, 25 Jul 2025 11:10:42 -0700 (PDT) Received: from fionn ([142.189.102.151]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-707299feac9sm3068186d6.1.2025.07.25.11.10.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Jul 2025 11:10:42 -0700 (PDT) Date: Fri, 25 Jul 2025 14:10:41 -0400 (EDT) From: John Kacur To: Cheng-Yang Chou cc: williams@redhat.com, linux-rt-users@vger.kernel.org, jserv@ccns.ncku.edu.tw Subject: Re: [PATCH 4/8] rt-migrate-test.c: Suppress warning In-Reply-To: <20250712134213.58582-5-yphbchou0911@gmail.com> Message-ID: <524bcaff-d66b-c7c1-f8de-145b467d80de@redhat.com> References: <20250712134213.58582-1-yphbchou0911@gmail.com> <20250712134213.58582-5-yphbchou0911@gmail.com> 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 Sat, 12 Jul 2025, Cheng-Yang Chou wrote: > Signed-off-by: Cheng-Yang Chou > --- > src/rt-migrate-test/rt-migrate-test.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/src/rt-migrate-test/rt-migrate-test.c b/src/rt-migrate-test/rt-migrate-test.c > index 8afe083..d7c0bf3 100644 > --- a/src/rt-migrate-test/rt-migrate-test.c > +++ b/src/rt-migrate-test/rt-migrate-test.c > @@ -61,6 +61,7 @@ static void ftrace_write(const char *fmt, ...) > { > va_list ap; > int n; > + int ret; > > if (mark_fd < 0) > return; > @@ -69,7 +70,9 @@ static void ftrace_write(const char *fmt, ...) > n = vsnprintf(buff, BUFSIZ, fmt, ap); > va_end(ap); > > - write(mark_fd, buff, n); > + ret = write(mark_fd, buff, n); > + if (ret < 0) > + perror("ftrace_write failed"); > } > > #define nano2sec(nan) (nan / 1000000000ULL) > -- > 2.48.1 > > > Signed-off-by: John Kacur