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habanalabs: define trace events

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This patch adds trace events for habanalabs driver to gain all the
benefits such an infrastructure can supply.

The following events were added:
- MMU map/unmap: to be able to track driver's memory allocations
- DMA alloc/free: to track our DMA allocation

the above trace points in conjunction will help us map the device memory
usage as well as to be able to track memory violations.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ohad Sharabi 2022-06-08 09:58:59 +03:00 committed by Oded Gabbay
parent 7b5d13c9ca
commit 191a4443c3
3 changed files with 94 additions and 0 deletions
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1
MAINTAINERS
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@ -8886,6 +8886,7 @@ T: git https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
F: Documentation/ABI/testing/debugfs-driver-habanalabs
F: Documentation/ABI/testing/sysfs-driver-habanalabs
F: drivers/misc/habanalabs/
F: include/trace/events/habanalabs.h
F: include/uapi/misc/habanalabs.h
HACKRF MEDIA DRIVER

3
drivers/misc/habanalabs/common/habanalabs_drv.c
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@ -14,6 +14,9 @@
#include <linux/aer.h>
#include <linux/module.h>
#define CREATE_TRACE_POINTS
#include <trace/events/habanalabs.h>
#define HL_DRIVER_AUTHOR "HabanaLabs Kernel Driver Team"
#define HL_DRIVER_DESC "Driver for HabanaLabs's AI Accelerators"

90
include/trace/events/habanalabs.h Normal file
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@ -0,0 +1,90 @@
/* SPDX-License-Identifier: GPL-2.0
*
* Copyright 2016-2021 HabanaLabs, Ltd.
* All Rights Reserved.
*
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM habanalabs
#if !defined(_TRACE_HABANALABS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HABANALABS_H
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(habanalabs_mmu_template,
TP_PROTO(struct device *dev, u64 virt_addr, u64 phys_addr, u32 page_size, bool flush_pte),
TP_ARGS(dev, virt_addr, phys_addr, page_size, flush_pte),
TP_STRUCT__entry(
__string(dname, dev_name(dev))
__field(u64, virt_addr)
__field(u64, phys_addr)
__field(u32, page_size)
__field(u8, flush_pte)
),
TP_fast_assign(
__assign_str(dname, dev_name(dev));
__entry->virt_addr = virt_addr;
__entry->phys_addr = phys_addr;
__entry->page_size = page_size;
__entry->flush_pte = flush_pte;
),
TP_printk("%s: vaddr: %#llx, paddr: %#llx, psize: %#x, flush: %s",
__get_str(dname),
__entry->virt_addr,
__entry->phys_addr,
__entry->page_size,
__entry->flush_pte ? "true" : "false")
);
DEFINE_EVENT(habanalabs_mmu_template, habanalabs_mmu_map,
TP_PROTO(struct device *dev, u64 virt_addr, u64 phys_addr, u32 page_size, bool flush_pte),
TP_ARGS(dev, virt_addr, phys_addr, page_size, flush_pte));
DEFINE_EVENT(habanalabs_mmu_template, habanalabs_mmu_unmap,
TP_PROTO(struct device *dev, u64 virt_addr, u64 phys_addr, u32 page_size, bool flush_pte),
TP_ARGS(dev, virt_addr, phys_addr, page_size, flush_pte));
DECLARE_EVENT_CLASS(habanalabs_dma_alloc_template,
TP_PROTO(struct device *dev, u64 cpu_addr, u64 dma_addr, size_t size),
TP_ARGS(dev, cpu_addr, dma_addr, size),
TP_STRUCT__entry(
__string(dname, dev_name(dev))
__field(u64, cpu_addr)
__field(u64, dma_addr)
__field(u32, size)
),
TP_fast_assign(
__assign_str(dname, dev_name(dev));
__entry->cpu_addr = cpu_addr;
__entry->dma_addr = dma_addr;
__entry->size = size;
),
TP_printk("%s: cpu_addr: %#llx, dma_addr: %#llx, size: %#x",
__get_str(dname),
__entry->cpu_addr,
__entry->dma_addr,
__entry->size)
);
DEFINE_EVENT(habanalabs_dma_alloc_template, habanalabs_dma_alloc,
TP_PROTO(struct device *dev, u64 cpu_addr, u64 dma_addr, size_t size),
TP_ARGS(dev, cpu_addr, dma_addr, size));
DEFINE_EVENT(habanalabs_dma_alloc_template, habanalabs_dma_free,
TP_PROTO(struct device *dev, u64 cpu_addr, u64 dma_addr, size_t size),
TP_ARGS(dev, cpu_addr, dma_addr, size));
#endif /* if !defined(_TRACE_HABANALABS_H) || defined(TRACE_HEADER_MULTI_READ) */
/* This part must be outside protection */
#include <trace/define_trace.h>