openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

net: mvneta: Remove superfluous SMP function call 

Since commit 3b9d6da67e ("cpu/hotplug: Fix rollback during error-out
in __cpu_disable()") it is ensured that callbacks of CPU_ONLINE and
CPU_DOWN_PREPARE are processed on the hotplugged CPU. Due to this SMP
function calls are no longer required.

Replace smp_call_function_single() with a direct call to
mvneta_percpu_enable() or mvneta_percpu_disable(). The functions do
not require to be called with interrupts disabled, therefore the
smp_call_function_single() calling convention is not preserved.

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anna-Maria Gleixner 2016-05-02 11:02:51 +02:00 committed by David S. Miller
parent ce24c2b8a9
commit 0e28bf93a2
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/marvell/mvneta.c
View File

@ -3354,8 +3354,7 @@ static int mvneta_percpu_notifier(struct notifier_block *nfb,
/* Enable per-CPU interrupts on the CPU that is
* brought up.
*/
smp_call_function_single(cpu, mvneta_percpu_enable,
pp, true);
mvneta_percpu_enable(pp);
/* Enable per-CPU interrupt on the one CPU we care
* about.
@ -3387,8 +3386,7 @@ static int mvneta_percpu_notifier(struct notifier_block *nfb,
/* Disable per-CPU interrupts on the CPU that is
* brought down.
*/
smp_call_function_single(cpu, mvneta_percpu_disable,
pp, true);
mvneta_percpu_disable(pp);
break;
case CPU_DEAD: