PERF_NR_CONTEXTS
u8 perf_recursion[PERF_NR_CONTEXTS];
static DEFINE_PER_CPU(u8, callchain_recursion[PERF_NR_CONTEXTS]);
size = perf_callchain_entry__sizeof() * PERF_NR_CONTEXTS;
for (i = 0; i < PERF_NR_CONTEXTS; i++) {
for (i = 0; i < PERF_NR_CONTEXTS; i++) {
static char __percpu *perf_trace_buf[PERF_NR_CONTEXTS];
for (i = 0; i < PERF_NR_CONTEXTS; i++) {