mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 10:13:57 +08:00
67178767b9
Lockdep events subsystem gathers various locking related events such as a request, release, contention or acquisition of a lock. The name of this event subsystem is a bit of a misnomer since these events are not quite related to lockdep but more generally to locking, ie: these events are not reporting lock dependencies or possible deadlock scenario but pure locking events. Hence this rename. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <1258103194-843-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM lock
|
|
|
|
#if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_LOCK_H
|
|
|
|
#include <linux/lockdep.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
#ifdef CONFIG_LOCKDEP
|
|
|
|
TRACE_EVENT(lock_acquire,
|
|
|
|
TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
|
|
int trylock, int read, int check,
|
|
struct lockdep_map *next_lock, unsigned long ip),
|
|
|
|
TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned int, flags)
|
|
__string(name, lock->name)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0);
|
|
__assign_str(name, lock->name);
|
|
),
|
|
|
|
TP_printk("%s%s%s", (__entry->flags & 1) ? "try " : "",
|
|
(__entry->flags & 2) ? "read " : "",
|
|
__get_str(name))
|
|
);
|
|
|
|
TRACE_EVENT(lock_release,
|
|
|
|
TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
|
|
|
|
TP_ARGS(lock, nested, ip),
|
|
|
|
TP_STRUCT__entry(
|
|
__string(name, lock->name)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__assign_str(name, lock->name);
|
|
),
|
|
|
|
TP_printk("%s", __get_str(name))
|
|
);
|
|
|
|
#ifdef CONFIG_LOCK_STAT
|
|
|
|
TRACE_EVENT(lock_contended,
|
|
|
|
TP_PROTO(struct lockdep_map *lock, unsigned long ip),
|
|
|
|
TP_ARGS(lock, ip),
|
|
|
|
TP_STRUCT__entry(
|
|
__string(name, lock->name)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__assign_str(name, lock->name);
|
|
),
|
|
|
|
TP_printk("%s", __get_str(name))
|
|
);
|
|
|
|
TRACE_EVENT(lock_acquired,
|
|
TP_PROTO(struct lockdep_map *lock, unsigned long ip, s64 waittime),
|
|
|
|
TP_ARGS(lock, ip, waittime),
|
|
|
|
TP_STRUCT__entry(
|
|
__string(name, lock->name)
|
|
__field(unsigned long, wait_usec)
|
|
__field(unsigned long, wait_nsec_rem)
|
|
),
|
|
TP_fast_assign(
|
|
__assign_str(name, lock->name);
|
|
__entry->wait_nsec_rem = do_div(waittime, NSEC_PER_USEC);
|
|
__entry->wait_usec = (unsigned long) waittime;
|
|
),
|
|
TP_printk("%s (%lu.%03lu us)", __get_str(name), __entry->wait_usec,
|
|
__entry->wait_nsec_rem)
|
|
);
|
|
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* _TRACE_LOCK_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|