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()
---
 scripts/Makefile.propeller | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 scripts/Makefile.propeller

(limited to 'scripts/Makefile.propeller')

diff --git a/scripts/Makefile.propeller b/scripts/Makefile.propeller
new file mode 100644
index 000000000..48a660128
--- /dev/null
+++ b/scripts/Makefile.propeller
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# Enable available and selected Clang Propeller features.
+ifdef CLANG_PROPELLER_PROFILE_PREFIX
+  CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=list=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt -ffunction-sections
+  KBUILD_LDFLAGS += --symbol-ordering-file=$(CLANG_PROPELLER_PROFILE_PREFIX)_ld_profile.txt --no-warn-symbol-ordering
+else
+  # Starting with Clang v20, the '-fbasic-block-sections=labels' option is
+  # deprecated. Use the recommended '-fbasic-block-address-map' option.
+  # Link: https://github.com/llvm/llvm-project/pull/110039
+  ifeq ($(call clang-min-version, 200000),y)
+    CFLAGS_PROPELLER_CLANG := -fbasic-block-address-map
+  else
+    CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=labels
+  endif
+endif
+
+# Propeller requires debug information to embed module names in the profiles.
+# If CONFIG_DEBUG_INFO is not enabled, set -gmlt option. Skip this for AutoFDO,
+# as the option should already be set.
+ifndef CONFIG_DEBUG_INFO
+  ifndef CONFIG_AUTOFDO_CLANG
+    CFLAGS_PROPELLER_CLANG += -gmlt
+  endif
+endif
+
+ifdef CONFIG_LTO_CLANG_THIN
+  ifdef CLANG_PROPELLER_PROFILE_PREFIX
+    KBUILD_LDFLAGS += --lto-basic-block-sections=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt
+  else
+    ifeq ($(call test-ge, $(CONFIG_LLD_VERSION), 200000),y)
+       KBUILD_LDFLAGS += --lto-basic-block-address-map
+    else
+       KBUILD_LDFLAGS += --lto-basic-block-sections=labels
+    endif
+  endif
+endif
+
+export CFLAGS_PROPELLER_CLANG
-- 
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