lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <157909757089.1192265.9038866294345740126.stgit@toke.dk> Date: Wed, 15 Jan 2020 15:12:50 +0100 From: Toke Høiland-Jørgensen <toke@...hat.com> To: Alexei Starovoitov <ast@...nel.org> Cc: Daniel Borkmann <daniel@...earbox.net>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, Andrii Nakryiko <andriin@...com>, Doug Ledford <dledford@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <jakub.kicinski@...ronome.com>, Jesper Dangaard Brouer <brouer@...hat.com>, John Fastabend <john.fastabend@...il.com>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Mark Rutland <mark.rutland@....com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>, Shuah Khan <shuah@...nel.org>, netdev@...r.kernel.org, bpf@...r.kernel.org, linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org, linux-kselftest@...r.kernel.org, clang-built-linux@...glegroups.com Subject: [PATCH bpf-next v2 02/10] tools/bpf/runqslower: Fix override option for VMLINUX_BTF From: Toke Høiland-Jørgensen <toke@...hat.com> The runqslower tool refuses to build without a file to read vmlinux BTF from. The build fails with an error message to override the location by setting the VMLINUX_BTF variable if autodetection fails. However, the Makefile doesn't actually work with that override - the error message is still emitted. Fix this by only doing auto-detection if no override is set. And while we're at it, also look for a vmlinux file in the current kernel build dir if none if found on the running kernel. Fixes: 9c01546d26d2 ("tools/bpf: Add runqslower tool to tools/bpf") Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com> --- tools/bpf/runqslower/Makefile | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile index cff2fbcd29a8..fb93ce2bf2fe 100644 --- a/tools/bpf/runqslower/Makefile +++ b/tools/bpf/runqslower/Makefile @@ -10,12 +10,16 @@ CFLAGS := -g -Wall # Try to detect best kernel BTF source KERNEL_REL := $(shell uname -r) -ifneq ("$(wildcard /sys/kernel/btf/vmlinux)","") -VMLINUX_BTF := /sys/kernel/btf/vmlinux -else ifneq ("$(wildcard /boot/vmlinux-$(KERNEL_REL))","") -VMLINUX_BTF := /boot/vmlinux-$(KERNEL_REL) -else -$(error "Can't detect kernel BTF, use VMLINUX_BTF to specify it explicitly") +ifeq ("$(VMLINUX_BTF)","") + ifneq ("$(wildcard /sys/kernel/btf/vmlinux)","") + VMLINUX_BTF := /sys/kernel/btf/vmlinux + else ifneq ("$(wildcard /boot/vmlinux-$(KERNEL_REL))","") + VMLINUX_BTF := /boot/vmlinux-$(KERNEL_REL) + else ifneq ("$(wildcard $(abspath ../../../vmlinux))","") + VMLINUX_BTF := $(abspath ../../../vmlinux) + else + $(error "Can't detect kernel BTF, use VMLINUX_BTF to specify it explicitly") + endif endif abs_out := $(abspath $(OUTPUT))
Powered by blists - more mailing lists