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[79.55.123.4]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a72aafba04asm1887666b.97.2024.06.27.11.45.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jun 2024 11:45:25 -0700 (PDT) From: Andrea Righi To: Tejun Heo , David Vernet Cc: linux-kernel@vger.kernel.org, Andrea Righi Subject: [PATCH] sched_ext: add CONFIG_DEBUG_INFO_BTF dependency Date: Thu, 27 Jun 2024 20:45:22 +0200 Message-ID: <20240627184522.1257114-1-andrea.righi@canonical.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Without BTF, attempting to load any sched_ext scheduler will result in an error like the following: libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DE= BUG_INFO_BTF enabled? This makes sched_ext pretty much unusable, so explicitly depend on CONFIG_DEBUG_INFO_BTF to prevent these issues. Signed-off-by: Andrea Righi --- kernel/Kconfig.preempt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index f035c87d02f1..f3d140c3acc1 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -135,7 +135,7 @@ config SCHED_CORE =20 config SCHED_CLASS_EXT bool "Extensible Scheduling Class" - depends on BPF_SYSCALL && BPF_JIT + depends on BPF_SYSCALL && BPF_JIT && DEBUG_INFO_BTF help This option enables a new scheduler class sched_ext (SCX), which allows scheduling policies to be implemented as BPF programs to --=20 2.43.0