From bdab18633a302c82b5e5d5dbc4e38b0baf9c0837 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 20 Sep 2026 08:15:23 -0700
Subject: Merge tag 'locking-urgent-2026-09-20' of
 git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull futex fix from Ingo Molnar:

 - Also allocate a default private futex hash on vfork() as well, to
   avoid races with (private) futex waiters (Peter Zijlstra)

* tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Also allocate private hash on vfork()
---
 drivers/gpu/trace/Kconfig         | 13 +++++++++++++
 drivers/gpu/trace/Makefile        |  3 +++
 drivers/gpu/trace/trace_gpu_mem.c | 13 +++++++++++++
 3 files changed, 29 insertions(+)
 create mode 100644 drivers/gpu/trace/Kconfig
 create mode 100644 drivers/gpu/trace/Makefile
 create mode 100644 drivers/gpu/trace/trace_gpu_mem.c

(limited to 'drivers/gpu/trace')

diff --git a/drivers/gpu/trace/Kconfig b/drivers/gpu/trace/Kconfig
new file mode 100644
index 000000000..cd3d19c4a
--- /dev/null
+++ b/drivers/gpu/trace/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config TRACE_GPU_MEM
+	bool "Enable GPU memory usage tracepoints"
+	default n
+	help
+	  Choose this option to enable tracepoints for tracking
+	  global and per-process GPU memory usage. Intended for
+	  performance profiling and required for Android.
+
+	  Tracepoint availability varies by GPU driver.
+
+	  If in doubt, say "N".
diff --git a/drivers/gpu/trace/Makefile b/drivers/gpu/trace/Makefile
new file mode 100644
index 000000000..b70fbdc58
--- /dev/null
+++ b/drivers/gpu/trace/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_TRACE_GPU_MEM) += trace_gpu_mem.o
diff --git a/drivers/gpu/trace/trace_gpu_mem.c b/drivers/gpu/trace/trace_gpu_mem.c
new file mode 100644
index 000000000..01e855897
--- /dev/null
+++ b/drivers/gpu/trace/trace_gpu_mem.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * GPU memory trace points
+ *
+ * Copyright (C) 2020 Google, Inc.
+ */
+
+#include <linux/module.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/gpu_mem.h>
+
+EXPORT_TRACEPOINT_SYMBOL(gpu_mem_total);
-- 
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