Commit 627ae828 authored by Gang Li's avatar Gang Li Committed by Linus Torvalds
Browse files

mm: mmap_lock: use DECLARE_EVENT_CLASS and DEFINE_EVENT_FN 

By using DECLARE_EVENT_CLASS and TRACE_EVENT_FN, we can save a lot of
space from duplicate code.

Link: https://lkml.kernel.org/r/20211009071243.70286-1-ligang.bdlg@bytedance.com


Signed-off-by: default avatarGang Li <ligang.bdlg@bytedance.com>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Reviewed-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f595e341

include/trace/events/mmap_lock.h

+12 −32
Original line number Diff line number Diff line
@@ -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 */