mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 05:35:12 +07:00
0181ce31b2
Add fault injection capability:
- Drop packets unconditionally (fault_by_packet)
- Drop packets based on opcode (fault_by_opcode)
This feature reacts to the global FAULT_INJECTION
config flag.
The faulting traces have been added:
- misc/fault_opcode
- misc/fault_packet
See 'Documentation/fault-injection/fault-injection.txt'
for details.
Examples:
- Dropping packets by opcode:
/sys/kernel/debug/hfi1/hfi1_X/fault_opcode
# Enable fault
echo Y > fault_by_opcode
# Setprobability of dropping (0-100%)
# echo 25 > probability
# Set opcode
echo 0x64 > opcode
# Number of times to fault
echo 3 > times
# An optional mask allows you to fault
# a range of opcodes
echo 0xf0 > mask
/sys/kernel/debug/hfi1/hfi1_X/fault_stats
contains a value in parentheses to indicate
number of each opcode dropped.
- Dropping packets unconditionally
/sys/kernel/debug/hfi1/hfi1_X/fault_packet
# Enable fault
echo Y > fault_by_packet
/sys/kernel/debug/hfi1/hfi1_X/fault_packet/fault_stats
contains the number of packets dropped.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
130 lines
4.4 KiB
C
130 lines
4.4 KiB
C
/*
|
|
* Copyright(c) 2015, 2016 Intel Corporation.
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
#if !defined(__HFI1_TRACE_MISC_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define __HFI1_TRACE_MISC_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include <linux/trace_seq.h>
|
|
|
|
#include "hfi.h"
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM hfi1_misc
|
|
|
|
TRACE_EVENT(hfi1_interrupt,
|
|
TP_PROTO(struct hfi1_devdata *dd, const struct is_table *is_entry,
|
|
int src),
|
|
TP_ARGS(dd, is_entry, src),
|
|
TP_STRUCT__entry(DD_DEV_ENTRY(dd)
|
|
__array(char, buf, 64)
|
|
__field(int, src)
|
|
),
|
|
TP_fast_assign(DD_DEV_ASSIGN(dd)
|
|
is_entry->is_name(__entry->buf, 64,
|
|
src - is_entry->start);
|
|
__entry->src = src;
|
|
),
|
|
TP_printk("[%s] source: %s [%d]", __get_str(dev), __entry->buf,
|
|
__entry->src)
|
|
);
|
|
|
|
#ifdef CONFIG_FAULT_INJECTION
|
|
TRACE_EVENT(hfi1_fault_opcode,
|
|
TP_PROTO(struct rvt_qp *qp, u8 opcode),
|
|
TP_ARGS(qp, opcode),
|
|
TP_STRUCT__entry(DD_DEV_ENTRY(dd_from_ibdev(qp->ibqp.device))
|
|
__field(u32, qpn)
|
|
__field(u8, opcode)
|
|
),
|
|
TP_fast_assign(DD_DEV_ASSIGN(dd_from_ibdev(qp->ibqp.device))
|
|
__entry->qpn = qp->ibqp.qp_num;
|
|
__entry->opcode = opcode;
|
|
),
|
|
TP_printk("[%s] qpn 0x%x opcode 0x%x",
|
|
__get_str(dev), __entry->qpn, __entry->opcode)
|
|
);
|
|
|
|
TRACE_EVENT(hfi1_fault_packet,
|
|
TP_PROTO(struct hfi1_packet *packet),
|
|
TP_ARGS(packet),
|
|
TP_STRUCT__entry(DD_DEV_ENTRY(packet->rcd->ppd->dd)
|
|
__field(u64, eflags)
|
|
__field(u32, ctxt)
|
|
__field(u32, hlen)
|
|
__field(u32, tlen)
|
|
__field(u32, updegr)
|
|
__field(u32, etail)
|
|
),
|
|
TP_fast_assign(DD_DEV_ASSIGN(packet->rcd->ppd->dd);
|
|
__entry->eflags = rhf_err_flags(packet->rhf);
|
|
__entry->ctxt = packet->rcd->ctxt;
|
|
__entry->hlen = packet->hlen;
|
|
__entry->tlen = packet->tlen;
|
|
__entry->updegr = packet->updegr;
|
|
__entry->etail = rhf_egr_index(packet->rhf);
|
|
),
|
|
TP_printk(
|
|
"[%s] ctxt %d eflags 0x%llx hlen %d tlen %d updegr %d etail %d",
|
|
__get_str(dev),
|
|
__entry->ctxt,
|
|
__entry->eflags,
|
|
__entry->hlen,
|
|
__entry->tlen,
|
|
__entry->updegr,
|
|
__entry->etail
|
|
)
|
|
);
|
|
#endif
|
|
|
|
#endif /* __HFI1_TRACE_MISC_H */
|
|
|
|
#undef TRACE_INCLUDE_PATH
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_PATH .
|
|
#define TRACE_INCLUDE_FILE trace_misc
|
|
#include <trace/define_trace.h>
|