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linux_dsm_epyc7002/drivers/infiniband/hw/hfi1/trace_rx.h
Michael J. Ruhl d295dbeb2a IB/hf1: User context locking is inconsistent 
There is a mixture of mutex and spinlocks to protect receive context
(rcd/uctxt) information.  This is not used consistently.

Use the mutex to protect device receive context information only.
Use the spinlock to protect sub context information only.

Protect access to items in the rcd array with a spinlock and
reference count.

Remove spinlock around dd->rcd array cleanup.  Since interrupts are
disabled and cleaned up before this point, this lock is not useful.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-22 14:22:36 -04:00

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/*
* 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_RX_H) || defined(TRACE_HEADER_MULTI_READ)
#define __HFI1_TRACE_RX_H
#include <linux/tracepoint.h>
#include <linux/trace_seq.h>
#include "hfi.h"
#define tidtype_name(type) { PT_##type, #type }
#define show_tidtype(type) \
__print_symbolic(type, \
tidtype_name(EXPECTED), \
tidtype_name(EAGER), \
tidtype_name(INVALID)) \
#undef TRACE_SYSTEM
#define TRACE_SYSTEM hfi1_rx
#define packettype_name(etype) { RHF_RCV_TYPE_##etype, #etype }
#define show_packettype(etype) \
__print_symbolic(etype, \
packettype_name(EXPECTED), \
packettype_name(EAGER), \
packettype_name(IB), \
packettype_name(ERROR), \
packettype_name(BYPASS))
TRACE_EVENT(hfi1_rcvhdr,
TP_PROTO(struct hfi1_devdata *dd,
u32 ctxt,
u64 eflags,
u32 etype,
u32 hlen,
u32 tlen,
u32 updegr,
u32 etail
),
TP_ARGS(dd, ctxt, eflags, etype, hlen, tlen, updegr, etail),
TP_STRUCT__entry(DD_DEV_ENTRY(dd)
__field(u64, eflags)
__field(u32, ctxt)
__field(u32, etype)
__field(u32, hlen)
__field(u32, tlen)
__field(u32, updegr)
__field(u32, etail)
),
TP_fast_assign(DD_DEV_ASSIGN(dd);
__entry->eflags = eflags;
__entry->ctxt = ctxt;
__entry->etype = etype;
__entry->hlen = hlen;
__entry->tlen = tlen;
__entry->updegr = updegr;
__entry->etail = etail;
),
TP_printk(
"[%s] ctxt %d eflags 0x%llx etype %d,%s hlen %d tlen %d updegr %d etail %d",
__get_str(dev),
__entry->ctxt,
__entry->eflags,
__entry->etype, show_packettype(__entry->etype),
__entry->hlen,
__entry->tlen,
__entry->updegr,
__entry->etail
)
);
TRACE_EVENT(hfi1_receive_interrupt,
TP_PROTO(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd),
TP_ARGS(dd, rcd),
TP_STRUCT__entry(DD_DEV_ENTRY(dd)
__field(u32, ctxt)
__field(u8, slow_path)
__field(u8, dma_rtail)
),
TP_fast_assign(DD_DEV_ASSIGN(dd);
__entry->ctxt = rcd->ctxt;
if (rcd->do_interrupt ==
&handle_receive_interrupt) {
__entry->slow_path = 1;
__entry->dma_rtail = 0xFF;
} else if (rcd->do_interrupt ==
&handle_receive_interrupt_dma_rtail){
__entry->dma_rtail = 1;
__entry->slow_path = 0;
} else if (rcd->do_interrupt ==
&handle_receive_interrupt_nodma_rtail) {
__entry->dma_rtail = 0;
__entry->slow_path = 0;
}
),
TP_printk("[%s] ctxt %d SlowPath: %d DmaRtail: %d",
__get_str(dev),
__entry->ctxt,
__entry->slow_path,
__entry->dma_rtail
)
);
DECLARE_EVENT_CLASS(
hfi1_exp_tid_reg_unreg,
TP_PROTO(unsigned int ctxt, u16 subctxt, u32 rarr,
u32 npages, unsigned long va, unsigned long pa,
dma_addr_t dma),
TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma),
TP_STRUCT__entry(
__field(unsigned int, ctxt)
__field(u16, subctxt)
__field(u32, rarr)
__field(u32, npages)
__field(unsigned long, va)
__field(unsigned long, pa)
__field(dma_addr_t, dma)
),
TP_fast_assign(
__entry->ctxt = ctxt;
__entry->subctxt = subctxt;
__entry->rarr = rarr;
__entry->npages = npages;
__entry->va = va;
__entry->pa = pa;
__entry->dma = dma;
),
TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx, va:0x%lx dma:0x%llx",
__entry->ctxt,
__entry->subctxt,
__entry->rarr,
__entry->npages,
__entry->pa,
__entry->va,
__entry->dma
)
);
DEFINE_EVENT(
hfi1_exp_tid_reg_unreg, hfi1_exp_tid_unreg,
TP_PROTO(unsigned int ctxt, u16 subctxt, u32 rarr, u32 npages,
unsigned long va, unsigned long pa, dma_addr_t dma),
TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma));
DEFINE_EVENT(
hfi1_exp_tid_reg_unreg, hfi1_exp_tid_reg,
TP_PROTO(unsigned int ctxt, u16 subctxt, u32 rarr, u32 npages,
unsigned long va, unsigned long pa, dma_addr_t dma),
TP_ARGS(ctxt, subctxt, rarr, npages, va, pa, dma));
TRACE_EVENT(
hfi1_put_tid,
TP_PROTO(struct hfi1_devdata *dd,
u32 index, u32 type, unsigned long pa, u16 order),
TP_ARGS(dd, index, type, pa, order),
TP_STRUCT__entry(
DD_DEV_ENTRY(dd)
__field(unsigned long, pa);
__field(u32, index);
__field(u32, type);
__field(u16, order);
),
TP_fast_assign(
DD_DEV_ASSIGN(dd);
__entry->pa = pa;
__entry->index = index;
__entry->type = type;
__entry->order = order;
),
TP_printk("[%s] type %s pa %lx index %u order %u",
__get_str(dev),
show_tidtype(__entry->type),
__entry->pa,
__entry->index,
__entry->order
)
);
TRACE_EVENT(hfi1_exp_tid_inval,
TP_PROTO(unsigned int ctxt, u16 subctxt, unsigned long va, u32 rarr,
u32 npages, dma_addr_t dma),
TP_ARGS(ctxt, subctxt, va, rarr, npages, dma),
TP_STRUCT__entry(
__field(unsigned int, ctxt)
__field(u16, subctxt)
__field(unsigned long, va)
__field(u32, rarr)
__field(u32, npages)
__field(dma_addr_t, dma)
),
TP_fast_assign(
__entry->ctxt = ctxt;
__entry->subctxt = subctxt;
__entry->va = va;
__entry->rarr = rarr;
__entry->npages = npages;
__entry->dma = dma;
),
TP_printk("[%u:%u] entry:%u, %u pages @ 0x%lx dma: 0x%llx",
__entry->ctxt,
__entry->subctxt,
__entry->rarr,
__entry->npages,
__entry->va,
__entry->dma
)
);
TRACE_EVENT(hfi1_mmu_invalidate,
TP_PROTO(unsigned int ctxt, u16 subctxt, const char *type,
unsigned long start, unsigned long end),
TP_ARGS(ctxt, subctxt, type, start, end),
TP_STRUCT__entry(
__field(unsigned int, ctxt)
__field(u16, subctxt)
__string(type, type)
__field(unsigned long, start)
__field(unsigned long, end)
),
TP_fast_assign(
__entry->ctxt = ctxt;
__entry->subctxt = subctxt;
__assign_str(type, type);
__entry->start = start;
__entry->end = end;
),
TP_printk("[%3u:%02u] MMU Invalidate (%s) 0x%lx - 0x%lx",
__entry->ctxt,
__entry->subctxt,
__get_str(type),
__entry->start,
__entry->end
)
);
#endif /* __HFI1_TRACE_RX_H */
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace_rx
#include <trace/define_trace.h>
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