tlb.h

 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	EM(  TLB_REMOTE_SEND_IPI,	"remote IPI send" )		\
17	EMe( TLB_REMOTE_WRONG_CPU,	"remote wrong CPU" )
18
19/*
20 * First define the enums in TLB_FLUSH_REASON to be exported to userspace
21 * via TRACE_DEFINE_ENUM().
22 */
23#undef EM
24#undef EMe
25#define EM(a,b)		TRACE_DEFINE_ENUM(a);
26#define EMe(a,b)	TRACE_DEFINE_ENUM(a);
27
28TLB_FLUSH_REASON
29
30/*
31 * Now redefine the EM() and EMe() macros to map the enums to the strings
32 * that will be printed in the output.
33 */
34#undef EM
35#undef EMe
36#define EM(a,b)		{ a, b },
37#define EMe(a,b)	{ a, b }
38
39TRACE_EVENT(tlb_flush,
40
41	TP_PROTO(int reason, unsigned long pages),
42	TP_ARGS(reason, pages),
43
44	TP_STRUCT__entry(
45		__field(	  int, reason)
46		__field(unsigned long,  pages)
47	),
48
49	TP_fast_assign(
50		__entry->reason = reason;
51		__entry->pages  = pages;
52	),
53
54	TP_printk("pages:%ld reason:%s (%d)",
55		__entry->pages,
56		__print_symbolic(__entry->reason, TLB_FLUSH_REASON),
57		__entry->reason)
58);
59
60#endif /* _TRACE_TLB_H */
61
62/* This part must be outside protection */
63#include <trace/define_trace.h>