xref: /openbmc/linux/include/trace/events/tlb.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #undef TRACE_SYSTEM
3 #define TRACE_SYSTEM tlb
4 
5 #if !defined(_TRACE_TLB_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define _TRACE_TLB_H
7 
8 #include <linux/mm_types.h>
9 #include <linux/tracepoint.h>
10 
11 #define TLB_FLUSH_REASON						\
12 	EM(  TLB_FLUSH_ON_TASK_SWITCH,	"flush on task switch" )	\
13 	EM(  TLB_REMOTE_SHOOTDOWN,	"remote shootdown" )		\
14 	EM(  TLB_LOCAL_SHOOTDOWN,	"local shootdown" )		\
15 	EM(  TLB_LOCAL_MM_SHOOTDOWN,	"local mm shootdown" )		\
16 	EMe( TLB_REMOTE_SEND_IPI,	"remote ipi send" )
17 
18 /*
19  * First define the enums in TLB_FLUSH_REASON to be exported to userspace
20  * via TRACE_DEFINE_ENUM().
21  */
22 #undef EM
23 #undef EMe
24 #define EM(a,b)		TRACE_DEFINE_ENUM(a);
25 #define EMe(a,b)	TRACE_DEFINE_ENUM(a);
26 
27 TLB_FLUSH_REASON
28 
29 /*
30  * Now redefine the EM() and EMe() macros to map the enums to the strings
31  * that will be printed in the output.
32  */
33 #undef EM
34 #undef EMe
35 #define EM(a,b)		{ a, b },
36 #define EMe(a,b)	{ a, b }
37 
38 TRACE_EVENT(tlb_flush,
39 
40 	TP_PROTO(int reason, unsigned long pages),
41 	TP_ARGS(reason, pages),
42 
43 	TP_STRUCT__entry(
44 		__field(	  int, reason)
45 		__field(unsigned long,  pages)
46 	),
47 
48 	TP_fast_assign(
49 		__entry->reason = reason;
50 		__entry->pages  = pages;
51 	),
52 
53 	TP_printk("pages:%ld reason:%s (%d)",
54 		__entry->pages,
55 		__print_symbolic(__entry->reason, TLB_FLUSH_REASON),
56 		__entry->reason)
57 );
58 
59 #endif /* _TRACE_TLB_H */
60 
61 /* This part must be outside protection */
62 #include <trace/define_trace.h>
63