trace: Fix build for Linux v6.10

In Linux v6.10, the __assign_str() macro was updated to remove the 2nd
argument. Add a test to the conftest script to detect this and update
the various trace header files as necessary.

Bug 4593750

Change-Id: I495e78658249baa84cca5b864f4e172c1f3f0838
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3152310
(cherry picked from commit 083d7038d1)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3170281
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>

include/trace/events/camera_common.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/*
+/* SPDX-FileCopyrightText: Copyright (c) 2017-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
- * Copyright (c) 2017-2023, NVIDIA CORPORATION, All rights reserved.
+
- */
+#include <nvidia/conftest.h>
 
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM camera_common
@@ -22,7 +22,11 @@ DECLARE_EVENT_CLASS(channel_simple,
 		__string(name,	name)
 	),
 	TP_fast_assign(
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(name);
+#else
 		__assign_str(name, name);
+#endif
 	),
 	TP_printk("%s", __get_str(name))
 );
@@ -50,7 +54,11 @@ DECLARE_EVENT_CLASS(channel,
 		__field(int,	num)
 	),
 	TP_fast_assign(
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(name);
+#else
 		__assign_str(name, name);
+#endif
 		__entry->num = num;
 	),
 	TP_printk("%s : 0x%x", __get_str(name), (int)__entry->num)
@@ -110,7 +118,11 @@ DECLARE_EVENT_CLASS(frame,
 		__field(long,	tv_nsec)
 	),
 	TP_fast_assign(
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(str);
+#else
 		__assign_str(str, str);
+#endif
 		__entry->tv_sec = ts->tv_sec;
 		__entry->tv_nsec = ts->tv_nsec;
 	),

include/trace/events/imx185.h

@@ -1,10 +1,11 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* SPDX-FileCopyrightText: Copyright (c) 2017-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
 /*
  * imx185.h
- *
- * Copyright (c) 2017-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  */
 
+#include <nvidia/conftest.h>
+
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM imx185
 
@@ -22,7 +23,11 @@ TRACE_EVENT(imx185_s_stream,
 		__field(int,	mode)
 	),
 	TP_fast_assign(
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(name);
+#else
 		__assign_str(name, name);
+#endif
 		__entry->enable = enable;
 		__entry->mode = mode;
 	),

include/trace/events/nvmap.h

@@ -4,6 +4,8 @@
  * NvMap event logging to ftrace.
  */
 
+#include <nvidia/conftest.h>
+
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM nvmap
 
@@ -28,7 +30,11 @@ DECLARE_EVENT_CLASS(nvmap,
 	),
 	TP_fast_assign(
 		__entry->client = client;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(sname);
+#else
 		__assign_str(sname, name);
+#endif
 	),
 	TP_printk("client=%p, name=%s",
 		__entry->client, __get_str(sname))
@@ -64,7 +70,11 @@ TRACE_EVENT(nvmap_create_handle,
 
 	TP_fast_assign(
 		__entry->client = client;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(sname);
+#else
 		__assign_str(sname, name);
+#endif
 		__entry->h = h;
 		__entry->size = size;
 		__entry->ref = ref;
@@ -147,7 +157,11 @@ DECLARE_EVENT_CLASS(nvmap_handle_summary,
 		__entry->size = size;
 		__entry->flags = flags;
 		__entry->tag = tag;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(tag_name);
+#else
 		__assign_str(tag_name, tag_name);
+#endif
 	),
 
 	TP_printk("client=0x%p pid=%d dupes=%u handle=0x%p share=%u base=%llx size=%zu flags=0x%x tag=0x%x %s",
@@ -419,7 +433,11 @@ DECLARE_EVENT_CLASS(pin_unpin,
 
 	TP_fast_assign(
 		__entry->client = client;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(sname);
+#else
 		__assign_str(sname, name);
+#endif
 		__entry->h = h;
 		__entry->pin_count = pin_count;
 	),
@@ -473,7 +491,11 @@ DECLARE_EVENT_CLASS(nvmap_dmabuf_2,
 
 	TP_fast_assign(
 		__entry->dbuf = dbuf;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(name);
+#else
 		__assign_str(name, dev_name(dev));
+#endif
 	),
 
 	TP_printk("dmabuf=%p, device=%s",
@@ -841,7 +863,11 @@ TRACE_EVENT(refcount_get_handle_from_sci_ipc_id,
 		__entry->handle = handle;
 		__entry->dmabuf = dmabuf;
 		__entry->handle_ref = handle_ref;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(acc_perm);
+#else
 		__assign_str(acc_perm, perm);
+#endif
 	),
 
 	TP_printk("handle=0x%p, dmabuf=0x%p, handle_ref=%d, perm=%s",
@@ -868,7 +894,11 @@ DECLARE_EVENT_CLASS(nvmap_refcount,
 		__entry->dmabuf = dmabuf;
 		__entry->handle_ref = handle_ref;
 		__entry->dmabuf_ref = dmabuf_ref;
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(acc_perm);
+#else
 		__assign_str(acc_perm, perm);
+#endif
 	),
 
 	TP_printk("handle=0x%p, dmabuf=0x%p, handle_ref=%d, dmabuf_ref=%ld, perm=%s",

include/trace/events/ov5693.h

@@ -1,10 +1,11 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* SPDX-FileCopyrightText: Copyright (c) 2017-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
 /*
- * Copyright (c) 2017-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
- *
  * ov5693.h
- *
  */
+
+#include <nvidia/conftest.h>
+
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM ov5693
 
@@ -22,7 +23,11 @@ TRACE_EVENT(ov5693_s_stream,
 		__field(int,	mode)
 	),
 	TP_fast_assign(
+#if defined(NV___ASSIGN_STR_HAS_NO_SRC_ARG)
+		__assign_str(name);
+#else
 		__assign_str(name, name);
+#endif
 		__entry->enable = enable;
 		__entry->mode = mode;
 	),

scripts/conftest/Makefile

@@ -89,6 +89,7 @@ endef
 #
 
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += __alloc_disk_node_has_lkclass_arg
+NV_CONFTEST_FUNCTION_COMPILE_TESTS += __assign_str_has_no_src_arg
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_execute_rq_has_no_gendisk_arg
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_mq_alloc_disk_for_queue
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_mq_alloc_queue

scripts/conftest/conftest.sh

@@ -6451,6 +6451,37 @@ compile_test() {
             compile_check_conftest "$CODE" "NV_CRYPTO_PRESENT" "" "symbols"
         ;;
 
+        __assign_str_has_no_src_arg)
+            #
+            echo "
+            #define TRACE_INCLUDE_FILE conftest$$
+            #define TRACE_INCLUDE_PATH ${PWD}
+
+            #include <linux/types.h>
+            #include <linux/tracepoint.h>
+
+            TRACE_EVENT(conftest,
+                TP_PROTO(const char *test),
+                TP_ARGS(test),
+                TP_STRUCT__entry(
+                    __string(test, test)
+                ),
+                TP_fast_assign(
+                    __assign_str(test);
+                ),
+                TP_printk(\"test=%s\", __get_str(test))
+            );
+            #include <trace/define_trace.h>" > conftest$$.h
+
+            CODE="
+            #define CREATE_TRACE_POINTS
+            #include \"conftest$$.h\"
+            "
+
+            compile_check_conftest "$CODE" "NV___ASSIGN_STR_HAS_NO_SRC_ARG" "" "types"
+            rm conftest$$.h
+        ;;
+
         __alloc_disk_node_has_lkclass_arg)
             #
             # Determine if the function __alloc_disk_node() has an 'lkclass'