1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM lock 4 5 #if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_LOCK_H 7 8 #include <linux/sched.h> 9 #include <linux/tracepoint.h> 10 11 /* flags for lock:contention_begin */ 12 #define LCB_F_SPIN (1U << 0) 13 #define LCB_F_READ (1U << 1) 14 #define LCB_F_WRITE (1U << 2) 15 #define LCB_F_RT (1U << 3) 16 #define LCB_F_PERCPU (1U << 4) 17 #define LCB_F_MUTEX (1U << 5) 18 19 20 #ifdef CONFIG_LOCKDEP 21 22 #include <linux/lockdep.h> 23 24 TRACE_EVENT(lock_acquire, 25 26 TP_PROTO(struct lockdep_map *lock, unsigned int subclass, 27 int trylock, int read, int check, 28 struct lockdep_map *next_lock, unsigned long ip), 29 30 TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip), 31 32 TP_STRUCT__entry( 33 __field(unsigned int, flags) 34 __string(name, lock->name) 35 __field(void *, lockdep_addr) 36 ), 37 38 TP_fast_assign( 39 __entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0); 40 __assign_str(name); 41 __entry->lockdep_addr = lock; 42 ), 43 44 TP_printk("%p %s%s%s", __entry->lockdep_addr, 45 (__entry->flags & 1) ? "try " : "", 46 (__entry->flags & 2) ? "read " : "", 47 __get_str(name)) 48 ); 49 50 DECLARE_EVENT_CLASS(lock, 51 52 TP_PROTO(struct lockdep_map *lock, unsigned long ip), 53 54 TP_ARGS(lock, ip), 55 56 TP_STRUCT__entry( 57 __string( name, lock->name ) 58 __field( void *, lockdep_addr ) 59 ), 60 61 TP_fast_assign( 62 __assign_str(name); 63 __entry->lockdep_addr = lock; 64 ), 65 66 TP_printk("%p %s", __entry->lockdep_addr, __get_str(name)) 67 ); 68 69 DEFINE_EVENT(lock, lock_release, 70 71 TP_PROTO(struct lockdep_map *lock, unsigned long ip), 72 73 TP_ARGS(lock, ip) 74 ); 75 76 #ifdef CONFIG_LOCK_STAT 77 78 DEFINE_EVENT(lock, lock_contended, 79 80 TP_PROTO(struct lockdep_map *lock, unsigned long ip), 81 82 TP_ARGS(lock, ip) 83 ); 84 85 DEFINE_EVENT(lock, lock_acquired, 86 87 TP_PROTO(struct lockdep_map *lock, unsigned long ip), 88 89 TP_ARGS(lock, ip) 90 ); 91 92 #endif /* CONFIG_LOCK_STAT */ 93 #endif /* CONFIG_LOCKDEP */ 94 95 TRACE_EVENT(contention_begin, 96 97 TP_PROTO(void *lock, unsigned int flags), 98 99 TP_ARGS(lock, flags), 100 101 TP_STRUCT__entry( 102 __field(void *, lock_addr) 103 __field(unsigned int, flags) 104 ), 105 106 TP_fast_assign( 107 __entry->lock_addr = lock; 108 __entry->flags = flags; 109 ), 110 111 TP_printk("%p (flags=%s)", __entry->lock_addr, 112 __print_flags(__entry->flags, "|", 113 { LCB_F_SPIN, "SPIN" }, 114 { LCB_F_READ, "READ" }, 115 { LCB_F_WRITE, "WRITE" }, 116 { LCB_F_RT, "RT" }, 117 { LCB_F_PERCPU, "PERCPU" }, 118 { LCB_F_MUTEX, "MUTEX" } 119 )) 120 ); 121 122 TRACE_EVENT(contention_end, 123 124 TP_PROTO(void *lock, int ret), 125 126 TP_ARGS(lock, ret), 127 128 TP_STRUCT__entry( 129 __field(void *, lock_addr) 130 __field(int, ret) 131 ), 132 133 TP_fast_assign( 134 __entry->lock_addr = lock; 135 __entry->ret = ret; 136 ), 137 138 TP_printk("%p (ret=%d)", __entry->lock_addr, __entry->ret) 139 ); 140 141 #endif /* _TRACE_LOCK_H */ 142 143 /* This part must be outside protection */ 144 #include <trace/define_trace.h> 145