On 3/30/25 10:14 AM, Beesdeckar wrote:
Hello,I found that global variable of type kmutex_t is on many places defined like:kmutex_t variable_name __cacheline_aligned;Two questions,1. Is __cacheline_aligned mandatory for global/static variables of type kmutex in kernel space ?
No, it's a performance optimization only. Basically, avoid cache line sharing with something that is potentially highly contested.
Joerg
