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gh-96143: Allow Linux perf profiler to see Python calls (GH-96123)

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⚠️  ⚠️ Note for reviewers, hackers and fellow systems/low-level/compiler engineers ⚠️ ⚠️ 

If you have a lot of experience with this kind of shenanigans and want to improve the **first** version, **please make a PR against my branch** or **reach out by email** or **suggest code changes directly on GitHub**. 

If you have any **refinements or optimizations** please, wait until the first version is merged before starting hacking or proposing those so we can keep this PR productive.
This commit is contained in:
Pablo Galindo Salgado 2022-08-30 18:11:18 +01:00 • committed by GitHub
parent 0f733fffe8
commit 6d791a9736
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24 changed files with 1412 additions and 2 deletions
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30
configure generated vendored
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@ -861,6 +861,7 @@ LIBEXPAT_CFLAGS
TZPATH
LIBUUID_LIBS
LIBUUID_CFLAGS
PERF_TRAMPOLINE_OBJ
SHLIBS
CFLAGSFORSHARED
LINKFORSHARED
@ -11498,6 +11499,35 @@ esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $SHLIBS" >&5
$as_echo "$SHLIBS" >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking perf trampoline" >&5
$as_echo_n "checking perf trampoline... " >&6; }
case $PLATFORM_TRIPLET in #(
x86_64-linux-gnu) :
perf_trampoline=yes ;; #(
aarch64-linux-gnu) :
perf_trampoline=yes ;; #(
*) :
perf_trampoline=no
;;
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $perf_trampoline" >&5
$as_echo "$perf_trampoline" >&6; }
if test "x$perf_trampoline" = xyes; then :
$as_echo "#define PY_HAVE_PERF_TRAMPOLINE 1" >>confdefs.h
PERF_TRAMPOLINE_OBJ=Objects/asm_trampoline.o
if test "x$Py_DEBUG" = xtrue; then :
as_fn_append BASECFLAGS " -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer"
fi
fi
# checks for libraries
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendfile in -lsendfile" >&5