| kern_lockstat.c (256281) | kern_lockstat.c (285759) |
|---|---|
| 1/*- 2 * Copyright 2008-2009 Stacey Son <sson@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * | 1/*- 2 * Copyright 2008-2009 Stacey Son <sson@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * |
| 25 * $FreeBSD: stable/10/sys/kern/kern_lockstat.c 192853 2009-05-26 20:28:22Z sson $ | 25 * $FreeBSD: stable/10/sys/kern/kern_lockstat.c 285759 2015-07-21 17:16:37Z markj $ |
| 26 */ 27 28/* 29 * Backend for the lock tracing (lockstat) kernel support. This is required 30 * to allow a module to load even though DTrace kernel support may not be 31 * present. 32 * 33 */ 34 35#include "opt_kdtrace.h" 36 37#ifdef KDTRACE_HOOKS 38 | 26 */ 27 28/* 29 * Backend for the lock tracing (lockstat) kernel support. This is required 30 * to allow a module to load even though DTrace kernel support may not be 31 * present. 32 * 33 */ 34 35#include "opt_kdtrace.h" 36 37#ifdef KDTRACE_HOOKS 38 |
| 39#include <sys/time.h> | |
| 40#include <sys/types.h> | 39#include <sys/types.h> |
| 40#include <sys/lock.h> |
|
| 41#include <sys/lockstat.h> | 41#include <sys/lockstat.h> |
| 42#include <sys/time.h> |
|
| 42 43/* 44 * The following must match the type definition of dtrace_probe. It is 45 * defined this way to avoid having to rely on CDDL code. 46 */ 47uint32_t lockstat_probemap[LS_NPROBES]; 48void (*lockstat_probe_func)(uint32_t, uintptr_t, uintptr_t, 49 uintptr_t, uintptr_t, uintptr_t); | 43 44/* 45 * The following must match the type definition of dtrace_probe. It is 46 * defined this way to avoid having to rely on CDDL code. 47 */ 48uint32_t lockstat_probemap[LS_NPROBES]; 49void (*lockstat_probe_func)(uint32_t, uintptr_t, uintptr_t, 50 uintptr_t, uintptr_t, uintptr_t); |
| 51int lockstat_enabled = 0; |
|
| 50 | 52 |
| 51 | |
| 52uint64_t | 53uint64_t |
| 53lockstat_nsecs(void) | 54lockstat_nsecs(struct lock_object *lo) |
| 54{ 55 struct bintime bt; 56 uint64_t ns; 57 | 55{ 56 struct bintime bt; 57 uint64_t ns; 58 |
| 59 if (!lockstat_enabled) 60 return (0); 61 if ((lo->lo_flags & LO_NOPROFILE) != 0) 62 return (0); 63 |
|
| 58 binuptime(&bt); 59 ns = bt.sec * (uint64_t)1000000000; 60 ns += ((uint64_t)1000000000 * (uint32_t)(bt.frac >> 32)) >> 32; 61 return (ns); 62} 63 64#endif /* KDTRACE_HOOKS */ | 64 binuptime(&bt); 65 ns = bt.sec * (uint64_t)1000000000; 66 ns += ((uint64_t)1000000000 * (uint32_t)(bt.frac >> 32)) >> 32; 67 return (ns); 68} 69 70#endif /* KDTRACE_HOOKS */ |