https://github.com/python/cpython/commit/b9e8979dcd563ee913c66802c8544aa050fda2d5
commit: b9e8979dcd563ee913c66802c8544aa050fda2d5
branch: main
author: Xiaowei Lu <[email protected]>
committer: vstinner <[email protected]>
date: 2026-07-09T21:17:40+02:00
summary:
gh-152769: Enable perf trampoline on musl (Alpine Linux) (#152774)
files:
A Misc/NEWS.d/next/Build/2026-07-01-17-53-00.gh-issue-152769.Kp7mQ2.rst
M configure
M configure.ac
diff --git
a/Misc/NEWS.d/next/Build/2026-07-01-17-53-00.gh-issue-152769.Kp7mQ2.rst
b/Misc/NEWS.d/next/Build/2026-07-01-17-53-00.gh-issue-152769.Kp7mQ2.rst
new file mode 100644
index 000000000000000..04a6ef4f5e0a7f8
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2026-07-01-17-53-00.gh-issue-152769.Kp7mQ2.rst
@@ -0,0 +1,4 @@
+Enable the :ref:`perf profiler <perf_profiling>` trampoline on Alpine Linux
with the
+musl C library on ``x86_64`` and ``aarch64``. The
+trampoline is architecture-specific and does not depend on the C library, so
+the same assembly trampoline used for glibc is reused for musl.
diff --git a/configure b/configure
index 11ef14c46eeeaef..17b7ef765cc7fdf 100755
--- a/configure
+++ b/configure
@@ -14440,9 +14440,15 @@ case $PLATFORM_TRIPLET in #(
x86_64-linux-gnu) :
perf_trampoline=yes
PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_x86_64.o ;;
#(
+ x86_64-linux-musl) :
+ perf_trampoline=yes
+ PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_x86_64.o ;;
#(
aarch64-linux-gnu) :
perf_trampoline=yes
PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_aarch64.o
;; #(
+ aarch64-linux-musl) :
+ perf_trampoline=yes
+ PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_aarch64.o
;; #(
darwin) :
case $MACOSX_DEPLOYMENT_TARGET in #(
10.[0-9]|10.1[0-1]) :
diff --git a/configure.ac b/configure.ac
index 568286a9e468a36..ab64ac8769b5515 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3874,8 +3874,12 @@ PERF_TRAMPOLINE_OBJ=""
AS_CASE([$PLATFORM_TRIPLET],
[x86_64-linux-gnu], [perf_trampoline=yes
PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_x86_64.o],
+ [x86_64-linux-musl], [perf_trampoline=yes
+ PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_x86_64.o],
[aarch64-linux-gnu], [perf_trampoline=yes
PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_aarch64.o],
+ [aarch64-linux-musl], [perf_trampoline=yes
+ PERF_TRAMPOLINE_OBJ=Python/asm_trampoline_aarch64.o],
[darwin], [AS_CASE([$MACOSX_DEPLOYMENT_TARGET],
[[10.[0-9]|10.1[0-1]]], [perf_trampoline=no],
[perf_trampoline=yes
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