p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ocxl: Add trace points 

Define a few trace points so that we can use the standard tracing
mechanism for debug and/or monitoring.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Frederic Barrat 2018-01-23 12:31:44 +01:00 committed by Michael Ellerman
parent 280b983ce2
commit 92add22e84
5 changed files with 205 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/misc/ocxl/afu_irq.c
View File

@ -4,6 +4,7 @@
#include <linux/eventfd.h>
#include <asm/pnv-ocxl.h>
#include "ocxl_internal.h"
#include "trace.h"
struct afu_irq {
int id;
@ -28,6 +29,7 @@ static irqreturn_t afu_irq_handler(int virq, void *data)
{
struct afu_irq *irq = (struct afu_irq *) data;
trace_ocxl_afu_irq_receive(virq);
if (irq->ev_ctx)
eventfd_signal(irq->ev_ctx, 1);
return IRQ_HANDLED;
@ -102,6 +104,8 @@ int ocxl_afu_irq_alloc(struct ocxl_context *ctx, u64 *irq_offset)
*irq_offset = irq_id_to_offset(ctx, irq->id);
trace_ocxl_afu_irq_alloc(ctx->pasid, irq->id, irq->virq, irq->hw_irq,
*irq_offset);
mutex_unlock(&ctx->irq_lock);
return 0;
@ -117,6 +121,7 @@ int ocxl_afu_irq_alloc(struct ocxl_context *ctx, u64 *irq_offset)
static void afu_irq_free(struct afu_irq *irq, struct ocxl_context *ctx)
{
trace_ocxl_afu_irq_free(ctx->pasid, irq->id);
if (ctx->mapping)
unmap_mapping_range(ctx->mapping,
irq_id_to_offset(ctx, irq->id),

2
drivers/misc/ocxl/context.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017 IBM Corp.
#include <linux/sched/mm.h>
#include "trace.h"
#include "ocxl_internal.h"
struct ocxl_context *ocxl_context_alloc(void)
@ -214,6 +215,7 @@ int ocxl_context_detach(struct ocxl_context *ctx)
mutex_lock(&ctx->afu->afu_control_lock);
rc = ocxl_config_terminate_pasid(dev, afu_control_pos, ctx->pasid);
mutex_unlock(&ctx->afu->afu_control_lock);
trace_ocxl_terminate_pasid(ctx->pasid, rc);
if (rc) {
/*
* If we timeout waiting for the AFU to terminate the

11
drivers/misc/ocxl/link.c
View File

@ -7,6 +7,7 @@
#include <asm/pnv-ocxl.h>
#include <misc/ocxl.h>
#include "ocxl_internal.h"
#include "trace.h"
#define SPA_PASID_BITS 15
@ -116,8 +117,11 @@ static void ack_irq(struct spa *spa, enum xsl_response r)
else
WARN(1, "Invalid irq response %d\n", r);
if (reg)
if (reg) {
trace_ocxl_fault_ack(spa->spa_mem, spa->xsl_fault.pe,
spa->xsl_fault.dsisr, spa->xsl_fault.dar, reg);
out_be64(spa->reg_tfc, reg);
}
}
static void xsl_fault_handler_bh(struct work_struct *fault_work)
@ -182,6 +186,7 @@ static irqreturn_t xsl_fault_handler(int irq, void *data)
int lpid, pid, tid;
read_irq(spa, &dsisr, &dar, &pe_handle);
trace_ocxl_fault(spa->spa_mem, pe_handle, dsisr, dar, -1);
WARN_ON(pe_handle > SPA_PE_MASK);
pe = spa->spa_mem + pe_handle;
@ -532,6 +537,7 @@ int ocxl_link_add_pe(void *link_handle, int pasid, u32 pidr, u32 tidr,
* the problem.
*/
mmgrab(mm);
trace_ocxl_context_add(current->pid, spa->spa_mem, pasid, pidr, tidr);
unlock:
mutex_unlock(&spa->spa_lock);
return rc;
@ -577,6 +583,9 @@ int ocxl_link_remove_pe(void *link_handle, int pasid)
goto unlock;
}
trace_ocxl_context_remove(current->pid, spa->spa_mem, pasid,
be32_to_cpu(pe->pid), be32_to_cpu(pe->tid));
memset(pe, 0, sizeof(struct ocxl_process_element));
/*
* The barrier makes sure the PE is removed from the SPA

6
drivers/misc/ocxl/trace.c Normal file
View File

@ -0,0 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017 IBM Corp.
#ifndef __CHECKER__
#define CREATE_TRACE_POINTS
#include "trace.h"
#endif

182
drivers/misc/ocxl/trace.h Normal file
View File

@ -0,0 +1,182 @@
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017 IBM Corp.
#undef TRACE_SYSTEM
#define TRACE_SYSTEM ocxl
#if !defined(_TRACE_OCXL_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_OCXL_H
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(ocxl_context,
TP_PROTO(pid_t pid, void *spa, int pasid, u32 pidr, u32 tidr),
TP_ARGS(pid, spa, pasid, pidr, tidr),
TP_STRUCT__entry(
__field(pid_t, pid)
__field(void*, spa)
__field(int, pasid)
__field(u32, pidr)
__field(u32, tidr)
),
TP_fast_assign(
__entry->pid = pid;
__entry->spa = spa;
__entry->pasid = pasid;
__entry->pidr = pidr;
__entry->tidr = tidr;
),
TP_printk("linux pid=%d spa=0x%p pasid=0x%x pidr=0x%x tidr=0x%x",
__entry->pid,
__entry->spa,
__entry->pasid,
__entry->pidr,
__entry->tidr
)
);
DEFINE_EVENT(ocxl_context, ocxl_context_add,
TP_PROTO(pid_t pid, void *spa, int pasid, u32 pidr, u32 tidr),
TP_ARGS(pid, spa, pasid, pidr, tidr)
);
DEFINE_EVENT(ocxl_context, ocxl_context_remove,
TP_PROTO(pid_t pid, void *spa, int pasid, u32 pidr, u32 tidr),
TP_ARGS(pid, spa, pasid, pidr, tidr)
);
TRACE_EVENT(ocxl_terminate_pasid,
TP_PROTO(int pasid, int rc),
TP_ARGS(pasid, rc),
TP_STRUCT__entry(
__field(int, pasid)
__field(int, rc)
),
TP_fast_assign(
__entry->pasid = pasid;
__entry->rc = rc;
),
TP_printk("pasid=0x%x rc=%d",
__entry->pasid,
__entry->rc
)
);
DECLARE_EVENT_CLASS(ocxl_fault_handler,
TP_PROTO(void *spa, u64 pe, u64 dsisr, u64 dar, u64 tfc),
TP_ARGS(spa, pe, dsisr, dar, tfc),
TP_STRUCT__entry(
__field(void *, spa)
__field(u64, pe)
__field(u64, dsisr)
__field(u64, dar)
__field(u64, tfc)
),
TP_fast_assign(
__entry->spa = spa;
__entry->pe = pe;
__entry->dsisr = dsisr;
__entry->dar = dar;
__entry->tfc = tfc;
),
TP_printk("spa=%p pe=0x%llx dsisr=0x%llx dar=0x%llx tfc=0x%llx",
__entry->spa,
__entry->pe,
__entry->dsisr,
__entry->dar,
__entry->tfc
)
);
DEFINE_EVENT(ocxl_fault_handler, ocxl_fault,
TP_PROTO(void *spa, u64 pe, u64 dsisr, u64 dar, u64 tfc),
TP_ARGS(spa, pe, dsisr, dar, tfc)
);
DEFINE_EVENT(ocxl_fault_handler, ocxl_fault_ack,
TP_PROTO(void *spa, u64 pe, u64 dsisr, u64 dar, u64 tfc),
TP_ARGS(spa, pe, dsisr, dar, tfc)
);
TRACE_EVENT(ocxl_afu_irq_alloc,
TP_PROTO(int pasid, int irq_id, unsigned int virq, int hw_irq,
u64 irq_offset),
TP_ARGS(pasid, irq_id, virq, hw_irq, irq_offset),
TP_STRUCT__entry(
__field(int, pasid)
__field(int, irq_id)
__field(unsigned int, virq)
__field(int, hw_irq)
__field(u64, irq_offset)
),
TP_fast_assign(
__entry->pasid = pasid;
__entry->irq_id = irq_id;
__entry->virq = virq;
__entry->hw_irq = hw_irq;
__entry->irq_offset = irq_offset;
),
TP_printk("pasid=0x%x irq_id=%d virq=%u hw_irq=%d irq_offset=0x%llx",
__entry->pasid,
__entry->irq_id,
__entry->virq,
__entry->hw_irq,
__entry->irq_offset
)
);
TRACE_EVENT(ocxl_afu_irq_free,
TP_PROTO(int pasid, int irq_id),
TP_ARGS(pasid, irq_id),
TP_STRUCT__entry(
__field(int, pasid)
__field(int, irq_id)
),
TP_fast_assign(
__entry->pasid = pasid;
__entry->irq_id = irq_id;
),
TP_printk("pasid=0x%x irq_id=%d",
__entry->pasid,
__entry->irq_id
)
);
TRACE_EVENT(ocxl_afu_irq_receive,
TP_PROTO(int virq),
TP_ARGS(virq),
TP_STRUCT__entry(
__field(int, virq)
),
TP_fast_assign(
__entry->virq = virq;
),
TP_printk("virq=%d",
__entry->virq
)
);
#endif /* _TRACE_OCXL_H */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>