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#include <linux/perf_event.h>
void fn (void) {
struct perf_event_attr *attr = NULL;
int cpu = 0;
struct task_struct *tsk = NULL;
perf_overflow_handler_t callback = NULL;
/* linux-2.6 commit 38a81da2205f94 */
(void) perf_event_create_kernel_counter(attr,
cpu,
tsk, /* as opposed to int pid */
callback);
}