Reviewed-by: Axel Rasmussen <axelrasmussen@xxxxxxxxxx> On Thu, Jul 29, 2021 at 2:28 AM Gang Li <ligang.bdlg@xxxxxxxxxxxxx> wrote: > > By using DECLARE_EVENT_CLASS and TRACE_EVENT_FN, we can save a lot > of space from duplicate code. > > Signed-off-by: Gang Li <ligang.bdlg@xxxxxxxxxxxxx> > --- > include/trace/events/mmap_lock.h | 44 +++++++++----------------------- > 1 file changed, 12 insertions(+), 32 deletions(-) > > diff --git a/include/trace/events/mmap_lock.h b/include/trace/events/mmap_lock.h > index 5f980c92e3e9..b9dd66f9c226 100644 > --- a/include/trace/events/mmap_lock.h > +++ b/include/trace/events/mmap_lock.h > @@ -13,7 +13,7 @@ struct mm_struct; > extern int trace_mmap_lock_reg(void); > extern void trace_mmap_lock_unreg(void); > > -TRACE_EVENT_FN(mmap_lock_start_locking, > +DECLARE_EVENT_CLASS(mmap_lock, > > TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write), > > @@ -36,11 +36,19 @@ TRACE_EVENT_FN(mmap_lock_start_locking, > __entry->mm, > __get_str(memcg_path), > __entry->write ? "true" : "false" > - ), > - > - trace_mmap_lock_reg, trace_mmap_lock_unreg > + ) > ); > > +#define DEFINE_MMAP_LOCK_EVENT(name) \ > + DEFINE_EVENT_FN(mmap_lock, name, \ > + TP_PROTO(struct mm_struct *mm, const char *memcg_path, \ > + bool write), \ > + TP_ARGS(mm, memcg_path, write), \ > + trace_mmap_lock_reg, trace_mmap_lock_unreg) > + > +DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking); > +DEFINE_MMAP_LOCK_EVENT(mmap_lock_released); > + > TRACE_EVENT_FN(mmap_lock_acquire_returned, > > TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write, > @@ -73,34 +81,6 @@ TRACE_EVENT_FN(mmap_lock_acquire_returned, > trace_mmap_lock_reg, trace_mmap_lock_unreg > ); > > -TRACE_EVENT_FN(mmap_lock_released, > - > - TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write), > - > - TP_ARGS(mm, memcg_path, write), > - > - TP_STRUCT__entry( > - __field(struct mm_struct *, mm) > - __string(memcg_path, memcg_path) > - __field(bool, write) > - ), > - > - TP_fast_assign( > - __entry->mm = mm; > - __assign_str(memcg_path, memcg_path); > - __entry->write = write; > - ), > - > - TP_printk( > - "mm=%p memcg_path=%s write=%s", > - __entry->mm, > - __get_str(memcg_path), > - __entry->write ? "true" : "false" > - ), > - > - trace_mmap_lock_reg, trace_mmap_lock_unreg > -); > - > #endif /* _TRACE_MMAP_LOCK_H */ > > /* This part must be outside protection */ > -- > 2.20.1 >
