Commit 45c3b08a authored by Vineet Gupta's avatar Vineet Gupta

ARC: Elide redundant setup of DMA callbacks

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>
parent 18b43e89
...@@ -921,6 +921,15 @@ void arc_cache_init(void) ...@@ -921,6 +921,15 @@ void arc_cache_init(void)
printk(arc_cache_mumbojumbo(0, str, sizeof(str))); 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)) { if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache; struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
......
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