Received-SPF: pass (google.com: domain of linux-kernel+bounces-26989-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: Li Zhijian <lizhijian@fujitsu.com>
To: linux-kernel@vger.kernel.org
Cc: Li Zhijian <lizhijian@fujitsu.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 42/42] kernel/cpu: Convert snprintf to sysfs_emit
Date: Tue, 16 Jan 2024 12:51:51 +0800
Message-Id: <20240116045151.3940401-40-lizhijian@fujitsu.com>
In-Reply-To: <20240116045151.3940401-1-lizhijian@fujitsu.com>
References: <20240116041129.3937800-1-lizhijian@fujitsu.com>
 <20240116045151.3940401-1-lizhijian@fujitsu.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

> ./kernel/cpu.c:3013:8-16: WARNING: please use sysfs_emit
> ./kernel/cpu.c:3026:8-16: WARNING: please use sysfs_emit

No functional change intended

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
---
 kernel/cpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index a86972a91991..a36fcf4a9eb6 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -3010,7 +3010,7 @@ static ssize_t control_show(struct device *dev,
 		return sysfs_emit(buf, "%d\n", cpu_smt_num_threads);
 #endif
 
-	return snprintf(buf, PAGE_SIZE - 2, "%s\n", state);
+	return sysfs_emit(buf, "%s\n", state);
 }
 
 static ssize_t control_store(struct device *dev, struct device_attribute *attr,
@@ -3023,7 +3023,7 @@ static DEVICE_ATTR_RW(control);
 static ssize_t active_show(struct device *dev,
 			   struct device_attribute *attr, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE - 2, "%d\n", sched_smt_active());
+	return sysfs_emit(buf, "%d\n", sched_smt_active());
 }
 static DEVICE_ATTR_RO(active);
 
-- 
2.29.2