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Sat, 12 Jul 2025 06:42:44 -0700 (PDT) Received: from eric-wcnlab.tail151456.ts.net ([2001:288:7001:1099:90c1:8214:37cf:b3e5]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23de42ae865sm64193205ad.72.2025.07.12.06.42.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Jul 2025 06:42:44 -0700 (PDT) From: Cheng-Yang Chou To: williams@redhat.com, jkacur@redhat.com Cc: linux-rt-users@vger.kernel.org, jserv@ccns.ncku.edu.tw, yphbchou0911@gmail.com Subject: [PATCH 4/8] rt-migrate-test.c: Suppress warning Date: Sat, 12 Jul 2025 21:42:09 +0800 Message-ID: <20250712134213.58582-5-yphbchou0911@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250712134213.58582-1-yphbchou0911@gmail.com> References: <20250712134213.58582-1-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-Transfer-Encoding: 8bit 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