diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/smp_lock.h | 21 | ||||
| -rw-r--r-- | include/trace/events/bkl.h | 61 | ||||
| -rw-r--r-- | include/trace/syscall.h | 2 |
3 files changed, 79 insertions, 5 deletions
diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h index 813be59bf34..2ea1dd1ba21 100644 --- a/include/linux/smp_lock.h +++ b/include/linux/smp_lock.h @@ -24,8 +24,21 @@ static inline int reacquire_kernel_lock(struct task_struct *task) return 0; } -extern void __lockfunc lock_kernel(void) __acquires(kernel_lock); -extern void __lockfunc unlock_kernel(void) __releases(kernel_lock); +extern void __lockfunc +_lock_kernel(const char *func, const char *file, int line) +__acquires(kernel_lock); + +extern void __lockfunc +_unlock_kernel(const char *func, const char *file, int line) +__releases(kernel_lock); + +#define lock_kernel() do { \ + _lock_kernel(__func__, __FILE__, __LINE__); \ +} while (0) + +#define unlock_kernel() do { \ + _unlock_kernel(__func__, __FILE__, __LINE__); \ +} while (0) /* * Various legacy drivers don't really need the BKL in a specific @@ -41,8 +54,8 @@ static inline void cycle_kernel_lock(void) #else -#define lock_kernel() do { } while(0) -#define unlock_kernel() do { } while(0) +#define lock_kernel() +#define unlock_kernel() #define release_kernel_lock(task) do { } while(0) #define cycle_kernel_lock() do { } while(0) #define reacquire_kernel_lock(task) 0 diff --git a/include/trace/events/bkl.h b/include/trace/events/bkl.h new file mode 100644 index 00000000000..8abd620a490 --- /dev/null +++ b/include/trace/events/bkl.h @@ -0,0 +1,61 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM bkl + +#if !defined(_TRACE_BKL_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_BKL_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(lock_kernel, + + TP_PROTO(const char *func, const char *file, int line), + + TP_ARGS(func, file, line), + + TP_STRUCT__entry( + __field( int, lock_depth ) + __field_ext( const char *, func, FILTER_PTR_STRING ) + __field_ext( const char *, file, FILTER_PTR_STRING ) + __field( int, line ) + ), + + TP_fast_assign( + /* We want to record the lock_depth after lock is acquired */ + __entry->lock_depth = current->lock_depth + 1; + __entry->func = func; + __entry->file = file; + __entry->line = line; + ), + + TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth, + __entry->file, __entry->line, __entry->func) +); + +TRACE_EVENT(unlock_kernel, + + TP_PROTO(const char *func, const char *file, int line), + + TP_ARGS(func, file, line), + + TP_STRUCT__entry( + __field(int, lock_depth) + __field(const char *, func) + __field(const char *, file) + __field(int, line) + ), + + TP_fast_assign( + __entry->lock_depth = current->lock_depth; + __entry->func = func; + __entry->file = file; + __entry->line = line; + ), + + TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth, + __entry->file, __entry->line, __entry->func) +); + +#endif /* _TRACE_BKL_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 5dc283ba5ae..e972f0a40f8 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -33,7 +33,7 @@ struct syscall_metadata { }; #ifdef CONFIG_FTRACE_SYSCALLS -extern struct syscall_metadata *syscall_nr_to_meta(int nr); +extern unsigned long arch_syscall_addr(int nr); extern int syscall_name_to_nr(char *name); void set_syscall_enter_id(int num, int id); void set_syscall_exit_id(int num, int id); |