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| author |   Andrii Nakryiko <andrii@kernel.org> | 2021-01-11 23:55:20 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-01-12 17:24:30 -0800 |
| commit | 430d97a8a7bf1500c081ce756ff2ead73d2303c5 (patch) | |
| tree | 348ac2808f0006934b49aa2f472b7d069af710ba /tools/testing/selftests/bpf/bpf_testmod | |
| parent | libbpf: Support kernel module ksym externs (diff) | |
| download | linux-dev-430d97a8a7bf1500c081ce756ff2ead73d2303c5.tar.xz linux-dev-430d97a8a7bf1500c081ce756ff2ead73d2303c5.zip | |
selftests/bpf: Test kernel module ksym externs
Add per-CPU variable to bpf_testmod.ko and use those from new selftest to
validate it works end-to-end.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Hao Luo <haoluo@google.com>
Link: https://lore.kernel.org/bpf/20210112075520.4103414-8-andrii@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index 2df19d73ca49..0b991e115d1f 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -3,6 +3,7 @@ #include <linux/error-injection.h> #include <linux/init.h> #include <linux/module.h> +#include <linux/percpu-defs.h> #include <linux/sysfs.h> #include <linux/tracepoint.h> #include "bpf_testmod.h" @@ -10,6 +11,8 @@ #define CREATE_TRACE_POINTS #include "bpf_testmod-events.h" +DEFINE_PER_CPU(int, bpf_testmod_ksym_percpu) = 123; + noinline ssize_t bpf_testmod_test_read(struct file *file, struct kobject *kobj, struct bin_attribute *bin_attr, |