arch/x86/include/asm/intel_ds.h

   1 #ifndef _ASM_INTEL_DS_H
   2 #define _ASM_INTEL_DS_H
   3
   4 #include <linux/percpu-defs.h>
   5
   6 #define BTS_BUFFER_SIZE         (PAGE_SIZE << 4)
   7 #define PEBS_BUFFER_SIZE        (PAGE_SIZE << 4)
   8
   9 /* The maximal number of PEBS events: */
  10 #define MAX_PEBS_EVENTS         8
  11 #define MAX_FIXED_PEBS_EVENTS   4
  12
  13 /*
  14  * A debug store configuration.
  15  *
  16  * We only support architectures that use 64bit fields.
  17  */
  18 struct debug_store {
  19         u64     bts_buffer_base;
  20         u64     bts_index;
  21         u64     bts_absolute_maximum;
  22         u64     bts_interrupt_threshold;
  23         u64     pebs_buffer_base;
  24         u64     pebs_index;
  25         u64     pebs_absolute_maximum;
  26         u64     pebs_interrupt_threshold;
  27         u64     pebs_event_reset[MAX_PEBS_EVENTS + MAX_FIXED_PEBS_EVENTS];
  28 } __aligned(PAGE_SIZE);
  29
  30 DECLARE_PER_CPU_PAGE_ALIGNED(struct debug_store, cpu_debug_store);
  31
  32 struct debug_store_buffers {
  33         char    bts_buffer[BTS_BUFFER_SIZE];
  34         char    pebs_buffer[PEBS_BUFFER_SIZE];
  35 };
  36
  37 #endif