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
  12 TRACE_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
  46 TRACE_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
  67 DECLARE_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
  89 DEFINE_EVENT(mpx_range_trace, mpx_unmap_zap,
  90         TP_PROTO(unsigned long start, unsigned long end),
  91         TP_ARGS(start, end)
  92 );
  93
  94 DEFINE_EVENT(mpx_range_trace, mpx_unmap_search,
  95         TP_PROTO(unsigned long start, unsigned long end),
  96         TP_ARGS(start, end)
  97 );
  98
  99 TRACE_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  */
 120 static inline
 121 void 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>