1*4882a593Smuzhiyuncat << EOF 2*4882a593Smuzhiyun/** 3*4882a593Smuzhiyun * ${arch}${atomic}_add_unless - add unless the number is already a given value 4*4882a593Smuzhiyun * @v: pointer of type ${atomic}_t 5*4882a593Smuzhiyun * @a: the amount to add to v... 6*4882a593Smuzhiyun * @u: ...unless v is equal to u. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Atomically adds @a to @v, if @v was not already @u. 9*4882a593Smuzhiyun * Returns true if the addition was done. 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyunstatic __always_inline bool 12*4882a593Smuzhiyun${arch}${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u) 13*4882a593Smuzhiyun{ 14*4882a593Smuzhiyun return ${arch}${atomic}_fetch_add_unless(v, a, u) != u; 15*4882a593Smuzhiyun} 16*4882a593SmuzhiyunEOF 17