linux-kernel - [PATCH v2 2/3] habanalabs: trace MMU map/unmap page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220821080608.27486-3-ogabbay@kernel.org>
Date:   Sun, 21 Aug 2022 11:06:07 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     rostedt@...dmis.org
Cc:     linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
        Ohad Sharabi <osharabi@...ana.ai>
Subject: [PATCH v2 2/3] habanalabs: trace MMU map/unmap page

From: Ohad Sharabi <osharabi@...ana.ai>

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

Signed-off-by: Ohad Sharabi <osharabi@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
Changes in v2:
 - Avoid check the return code in case tracing is disabled

 drivers/misc/habanalabs/common/mmu/mmu.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/misc/habanalabs/common/mmu/mmu.c b/drivers/misc/habanalabs/common/mmu/mmu.c
index 60740de47b34..f901e668a468 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.
@@ -259,6 +261,9 @@ int hl_mmu_unmap_page(struct hl_ctx *ctx, u64 virt_addr, u32 page_size, bool flu
 	if (flush_pte)
 		mmu_funcs->flush(ctx);
 
+	if (trace_habanalabs_mmu_unmap_enabled() && !rc)
+		trace_habanalabs_mmu_unmap(hdev->dev, virt_addr, 0, page_size, flush_pte);
+
 	return rc;
 }
 
@@ -344,6 +349,8 @@ 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