Quelle  tlb.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM tlb

#if !defined(_TRACE_TLB_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_TLB_H

#include <linux/mm_types.h>
#include <linux/tracepoint.h>

#define TLB_FLUSH_REASON      \
 EM(  TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" ) \
 EM(  TLB_REMOTE_SHOOTDOWN, "remote shootdown" )  \
 EM(  TLB_LOCAL_SHOOTDOWN, "local shootdown" )  \
 EM(  TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" )  \
 EMe( TLB_REMOTE_SEND_IPI, "remote ipi send" )

/*
 * First define the enums in TLB_FLUSH_REASON to be exported to userspace
 * via TRACE_DEFINE_ENUM().
 */
#undef EM
#undef EMe
#define EM(a,b)  TRACE_DEFINE_ENUM(a);
#define EMe(a,b) TRACE_DEFINE_ENUM(a);

TLB_FLUSH_REASON

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */
#undef EM
#undef EMe
#define EM(a,b)  { a, b },
#define EMe(a,b) { a, b }

TRACE_EVENT(tlb_flush,

 TP_PROTO(int reason, unsigned long pages),
 TP_ARGS(reason, pages),

 TP_STRUCT__entry(
  __field(   int, reason)
  __field(unsigned long,  pages)
 ),

 TP_fast_assign(
  __entry->reason = reason;
  __entry->pages  = pages;
 ),

 TP_printk("pages:%ld reason:%s (%d)",
  __entry->pages,
  __print_symbolic(__entry->reason, TLB_FLUSH_REASON),
  __entry->reason)
);

#endif /* _TRACE_TLB_H */

/* This part must be outside protection */
#include <trace/define_trace.h>