LXR linux/arch/x86/include/asm/trace/mpx.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#undef TRACE_SYSTEM
   3#define TRACE_SYSTEM mpx
   4
   5#if !defined(_TRACE_MPX_H) || defined(TRACE_HEADER_MULTI_READ)
   6#define _TRACE_MPX_H
   7
   8#include <linux/tracepoint.h>
   9
  10#ifdef CONFIG_X86_INTEL_MPX
  11
  12TRACE_EVENT(mpx_bounds_register_exception,
  13
  14        TP_PROTO(void __user *addr_referenced,
  15                 const struct mpx_bndreg *bndreg),
  16        TP_ARGS(addr_referenced, bndreg),
  17
  18        TP_STRUCT__entry(
  19                __field(void __user *, addr_referenced)
  20                __field(u64, lower_bound)
  21                __field(u64, upper_bound)
  22        ),
  23
  24        TP_fast_assign(
  25                __entry->addr_referenced = addr_referenced;
  26                __entry->lower_bound = bndreg->lower_bound;
  27                __entry->upper_bound = bndreg->upper_bound;
  28        ),
  29        /*
  30         * Note that we are printing out the '~' of the upper
  31         * bounds register here.  It is actually stored in its
  32         * one's complement form so that its 'init' state
  33         * corresponds to all 0's.  But, that looks like
  34         * gibberish when printed out, so print out the 1's
  35         * complement instead of the actual value here.  Note
  36         * though that you still need to specify filters for the
  37         * actual value, not the displayed one.
  38         */
  39        TP_printk("address referenced: 0x%p bounds: lower: 0x%llx ~upper: 0x%llx",
  40                __entry->addr_referenced,
  41                __entry->lower_bound,
  42                ~__entry->upper_bound
  43        )
  44);
  45
  46TRACE_EVENT(bounds_exception_mpx,
  47
  48        TP_PROTO(const struct mpx_bndcsr *bndcsr),
  49        TP_ARGS(bndcsr),
  50
  51        TP_STRUCT__entry(
  52                __field(u64, bndcfgu)
  53                __field(u64, bndstatus)
  54        ),
  55
  56        TP_fast_assign(
  57                /* need to get rid of the 'const' on bndcsr */
  58                __entry->bndcfgu   = (u64)bndcsr->bndcfgu;
  59                __entry->bndstatus = (u64)bndcsr->bndstatus;
  60        ),
  61
  62        TP_printk("bndcfgu:0x%llx bndstatus:0x%llx",
  63                __entry->bndcfgu,
  64                __entry->bndstatus)
  65);
  66
  67DECLARE_EVENT_CLASS(mpx_range_trace,
  68
  69        TP_PROTO(unsigned long start,
  70                 unsigned long end),
  71        TP_ARGS(start, end),
  72
  73        TP_STRUCT__entry(
  74                __field(unsigned long, start)
  75                __field(unsigned long, end)
  76        ),
  77
  78        TP_fast_assign(
  79                __entry->start = start;
  80                __entry->end   = end;
  81        ),
  82
  83        TP_printk("[0x%p:0x%p]",
  84                (void *)__entry->start,
  85                (void *)__entry->end
  86        )
  87);
  88
  89DEFINE_EVENT(mpx_range_trace, mpx_unmap_zap,
  90        TP_PROTO(unsigned long start, unsigned long end),
  91        TP_ARGS(start, end)
  92);
  93
  94DEFINE_EVENT(mpx_range_trace, mpx_unmap_search,
  95        TP_PROTO(unsigned long start, unsigned long end),
  96        TP_ARGS(start, end)
  97);
  98
  99TRACE_EVENT(mpx_new_bounds_table,
 100
 101        TP_PROTO(unsigned long table_vaddr),
 102        TP_ARGS(table_vaddr),
 103
 104        TP_STRUCT__entry(
 105                __field(unsigned long, table_vaddr)
 106        ),
 107
 108        TP_fast_assign(
 109                __entry->table_vaddr = table_vaddr;
 110        ),
 111
 112        TP_printk("table vaddr:%p", (void *)__entry->table_vaddr)
 113);
 114
 115#else
 116
 117/*
 118 * This gets used outside of MPX-specific code, so we need a stub.
 119 */
 120static inline
 121void trace_bounds_exception_mpx(const struct mpx_bndcsr *bndcsr)
 122{
 123}
 124
 125#endif /* CONFIG_X86_INTEL_MPX */
 126
 127#undef TRACE_INCLUDE_PATH
 128#define TRACE_INCLUDE_PATH asm/trace/
 129#undef TRACE_INCLUDE_FILE
 130#define TRACE_INCLUDE_FILE mpx
 131#endif /* _TRACE_MPX_H */
 132
 133/* This part must be outside protection */
 134#include <trace/define_trace.h>
 135