Commit 191a4443 authored by Ohad Sharabi's avatar Ohad Sharabi Committed by Oded Gabbay
Browse files

habanalabs: define trace events 



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: default avatarOhad Sharabi <osharabi@habana.ai>
Acked-by: default avatarOded Gabbay <ogabbay@kernel.org>
Reviewed-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 7b5d13c9

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
































drivers/misc/habanalabs/common/habanalabs_drv.c



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#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"
































include/trace/events/habanalabs.h
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/* 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>