/* -*- linux-c -*- * Perf Header File * Copyright (C) 2006-2014 Red Hat Inc. * * This file is part of systemtap, and is free software. You can * redistribute it and/or modify it under the terms of the GNU General * Public License (GPL); either version 2, or (at your option) any * later version. */ #ifndef _PERF_H_ #define _PERF_H_ /** @file perf.h * @brief Header file for performance monitoring hardware support */ struct stap_perf_probe { struct perf_event_attr attr; perf_overflow_handler_t callback; const struct stap_probe * const probe; union { /* per-cpu data. allocated with _stp_alloc_percpu() */ struct perf_event **events; struct { /* per-task data. allocated by perf_event_create_kernel_counter */ struct perf_event *per_thread_event; struct stap_task_finder_target tgt; } t; } e; unsigned system_wide : 1; unsigned task_finder : 1; struct mutex cb_lock; }; static long _stp_perf_init (struct stap_perf_probe *stp, struct task_struct* task); static int _stp_perf_init_n (struct stap_perf_probe *probes, size_t n, const char **ppfail); static void _stp_perf_del (struct stap_perf_probe *stp); static void _stp_perf_del_n (struct stap_perf_probe *probes, size_t n); #endif /* _PERF_H_ */

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