From: Oded Gabbay <ogabbay@kernel.org>
To: rostedt@goodmis.org
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
Ohad Sharabi <osharabi@habana.ai>
Subject: [PATCH 1/3] habanalabs: define trace events
Date: Thu, 11 Aug 2022 14:39:51 +0300 [thread overview]
Message-ID: <20220811113953.1963412-2-ogabbay@kernel.org> (raw)
In-Reply-To: <20220811113953.1963412-1-ogabbay@kernel.org>
From: Ohad Sharabi <osharabi@habana.ai>
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>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
MAINTAINERS | 1 +
.../misc/habanalabs/common/habanalabs_drv.c | 3 +
include/trace/events/habanalabs.h | 90 +++++++++++++++++++
3 files changed, 94 insertions(+)
create mode 100644 include/trace/events/habanalabs.h
diff --git a/MAINTAINERS b/MAINTAINERS
index b7221f4143cb..7b2fc3463cae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8873,6 +8873,7 @@ 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
diff --git a/drivers/misc/habanalabs/common/habanalabs_drv.c b/drivers/misc/habanalabs/common/habanalabs_drv.c
index 8026793d9083..e12148428731 100644
--- a/drivers/misc/habanalabs/common/habanalabs_drv.c
+++ b/drivers/misc/habanalabs/common/habanalabs_drv.c
@@ -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"
diff --git a/include/trace/events/habanalabs.h b/include/trace/events/habanalabs.h
new file mode 100644
index 000000000000..4fb592247ae8
--- /dev/null
+++ b/include/trace/events/habanalabs.h
@@ -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 ? 1 : 0;
+ ),
+
+ TP_printk("%s: vaddr: %#llx, paddr: %#llx, psize: %#x, flush: %u",
+ __get_str(dname),
+ __entry->virt_addr,
+ __entry->phys_addr,
+ __entry->page_size,
+ __entry->flush_pte)
+);
+
+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>
--
2.25.1
next prev parent reply other threads:[~2022-08-11 11:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-11 11:39 [PATCH 0/3] Adding support for trace events to habanalabs Oded Gabbay
2022-08-11 11:39 ` Oded Gabbay [this message]
2022-08-11 13:44 ` [PATCH 1/3] habanalabs: define trace events Steven Rostedt
2022-08-11 11:39 ` [PATCH 2/3] habanalabs: trace MMU map/unmap page Oded Gabbay
2022-08-11 13:50 ` Steven Rostedt
2022-08-11 11:39 ` [PATCH 3/3] habanalabs: trace DMA allocations Oded Gabbay
2022-08-11 13:53 ` Steven Rostedt
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