Commit 7ae87eeb authored by Sasha Levin's avatar Sasha Levin

ARC: Elide redundant setup of DMA callbacks

[ Upstream commit 45c3b08a ]

For resources shared by all cores such as SLC and IOC, only the master
core needs to do any setups / enabling / disabling etc.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 0e16c544
......@@ -155,6 +155,15 @@ void arc_cache_init(void)
printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
/*
* Only master CPU needs to execute rest of function:
* - Assume SMP so all cores will have same cache config so
* any geomtry checks will be same for all
* - IOC setup / dma callbacks only need to be setup once
*/
if (cpu)
return;
if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment