[PATCH 2/3] habanalabs: trace MMU map/unmap page

From: Oded Gabbay
Date: Thu Aug 11 2022 - 07:40:19 EST


From: Ohad Sharabi <osharabi@xxxxxxxxx>

This patch utilize the defined tracepoint to trace the MMU's pages
map/unmap operations.

Signed-off-by: Ohad Sharabi <osharabi@xxxxxxxxx>
Reviewed-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
Signed-off-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
---
drivers/misc/habanalabs/common/mmu/mmu.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/mmu/mmu.c b/drivers/misc/habanalabs/common/mmu/mmu.c
index 60740de47b34..60d2a3f8af13 100644
--- a/drivers/misc/habanalabs/common/mmu/mmu.c
+++ b/drivers/misc/habanalabs/common/mmu/mmu.c
@@ -9,6 +9,8 @@

#include "../habanalabs.h"

+#include <trace/events/habanalabs.h>
+
/**
* hl_mmu_get_funcs() - get MMU functions structure
* @hdev: habanalabs device structure.
@@ -259,7 +261,12 @@ int hl_mmu_unmap_page(struct hl_ctx *ctx, u64 virt_addr, u32 page_size, bool flu
if (flush_pte)
mmu_funcs->flush(ctx);

- return rc;
+ if (rc)
+ return rc;
+
+ trace_habanalabs_mmu_unmap(hdev->dev, virt_addr, 0, page_size, flush_pte);
+
+ return 0;
}

/*
@@ -344,6 +351,8 @@ int hl_mmu_map_page(struct hl_ctx *ctx, u64 virt_addr, u64 phys_addr, u32 page_s
if (flush_pte)
mmu_funcs->flush(ctx);

+ trace_habanalabs_mmu_map(hdev->dev, virt_addr, phys_addr, page_size, flush_pte);
+
return 0;

err:
--
2.25.1