cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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trace.h (2090B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * null_blk device driver tracepoints.
      4 *
      5 * Copyright (C) 2020 Western Digital Corporation or its affiliates.
      6 */
      7
      8#undef TRACE_SYSTEM
      9#define TRACE_SYSTEM nullb
     10
     11#if !defined(_TRACE_NULLB_H) || defined(TRACE_HEADER_MULTI_READ)
     12#define _TRACE_NULLB_H
     13
     14#include <linux/tracepoint.h>
     15#include <linux/trace_seq.h>
     16
     17#include "null_blk.h"
     18
     19const char *nullb_trace_disk_name(struct trace_seq *p, char *name);
     20
     21#define __print_disk_name(name) nullb_trace_disk_name(p, name)
     22
     23#ifndef TRACE_HEADER_MULTI_READ
     24static inline void __assign_disk_name(char *name, struct gendisk *disk)
     25{
     26	if (disk)
     27		memcpy(name, disk->disk_name, DISK_NAME_LEN);
     28	else
     29		memset(name, 0, DISK_NAME_LEN);
     30}
     31#endif
     32
     33TRACE_EVENT(nullb_zone_op,
     34	    TP_PROTO(struct nullb_cmd *cmd, unsigned int zone_no,
     35		     unsigned int zone_cond),
     36	    TP_ARGS(cmd, zone_no, zone_cond),
     37	    TP_STRUCT__entry(
     38		__array(char, disk, DISK_NAME_LEN)
     39		__field(enum req_opf, op)
     40		__field(unsigned int, zone_no)
     41		__field(unsigned int, zone_cond)
     42	    ),
     43	    TP_fast_assign(
     44		__entry->op = req_op(cmd->rq);
     45		__entry->zone_no = zone_no;
     46		__entry->zone_cond = zone_cond;
     47		__assign_disk_name(__entry->disk, cmd->rq->q->disk);
     48	    ),
     49	    TP_printk("%s req=%-15s zone_no=%u zone_cond=%-10s",
     50		      __print_disk_name(__entry->disk),
     51		      blk_op_str(__entry->op),
     52		      __entry->zone_no,
     53		      blk_zone_cond_str(__entry->zone_cond))
     54);
     55
     56TRACE_EVENT(nullb_report_zones,
     57	    TP_PROTO(struct nullb *nullb, unsigned int nr_zones),
     58	    TP_ARGS(nullb, nr_zones),
     59	    TP_STRUCT__entry(
     60		__array(char, disk, DISK_NAME_LEN)
     61		__field(unsigned int, nr_zones)
     62	    ),
     63	    TP_fast_assign(
     64		__entry->nr_zones = nr_zones;
     65		__assign_disk_name(__entry->disk, nullb->disk);
     66	    ),
     67	    TP_printk("%s nr_zones=%u",
     68		      __print_disk_name(__entry->disk), __entry->nr_zones)
     69);
     70
     71#endif /* _TRACE_NULLB_H */
     72
     73#undef TRACE_INCLUDE_PATH
     74#define TRACE_INCLUDE_PATH .
     75#undef TRACE_INCLUDE_FILE
     76#define TRACE_INCLUDE_FILE trace
     77
     78/* This part must be outside protection */
     79#include <trace/define_trace.h>