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perf: enable coresight if enabled in MACHINE_FEATURES

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Enable the CoreSight[1] functionality in perf[2] if 'coresight' is in the
MACHINE_FEATURES.

Note that enabling this will mean a dependency on the opencsd recipe,
which is currently part of meta-arm[3]. I don't think this is a problem
as this recipe is Arm-specific, and as this is a new feature the
behaviour is opt-in so shouldn't break any existing machines.

[1] https://docs.kernel.org/trace/coresight/coresight.html
[2] https://docs.kernel.org/trace/coresight/coresight-perf.html
[3] https://git.yoctoproject.org/meta-arm/tree/meta-arm/recipes-devtools/opencsd

(From OE-Core rev: c455bd039104466b26a959a6495dbb5a642b4533)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ross Burton
2025-09-03 17:24:11 +01:00
committed by Richard Purdie
parent 19a2b4f33f
commit c4324cbff2
1 changed files with 4 additions and 2 deletions
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6
meta/recipes-kernel/perf/perf.bb
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@@ -10,7 +10,9 @@ HOMEPAGE = "https://perf.wiki.kernel.org/index.php/Main_Page"
LICENSE = "GPL-2.0-only"
# zstd is required for kernels 6.14+ when libelf-zstd is detected
PACKAGECONFIG ??= "python tui libunwind libtraceevent zstd"
# Respect the coresight machine feature, but note this causes a
# dependency on meta-arm.
PACKAGECONFIG ??= "python tui libunwind libtraceevent zstd ${@bb.utils.filter('MACHINE_FEATURES', 'coresight', d)}"
PACKAGECONFIG[dwarf] = ",NO_DWARF=1"
PACKAGECONFIG[perl] = ",NO_LIBPERL=1,perl"
PACKAGECONFIG[python] = ",NO_LIBPYTHON=1,python3 python3-setuptools-native"
@@ -28,7 +30,7 @@ PACKAGECONFIG[libtraceevent] = ",NO_LIBTRACEEVENT=1,libtraceevent"
# jevents requires host python for generating a .c file, but is
# unrelated to the python item.
PACKAGECONFIG[jevents] = ",NO_JEVENTS=1,python3-native"
# Arm CoreSight
# Arm CoreSight support, requires meta-arm for opencsd
PACKAGECONFIG[coresight] = "CORESIGHT=1,,opencsd"
PACKAGECONFIG[pfm4] = ",NO_LIBPFM4=1,libpfm4"
PACKAGECONFIG[babeltrace] = ",NO_LIBBABELTRACE=1,babeltrace"