Yonghong Song 34ea38ca27 bpf: guard bpf_get_current_cgroup_id() with CONFIG_CGROUPS ... Commit bf6fa2c893 ("bpf: implement bpf_get_current_cgroup_id() helper") introduced a new helper bpf_get_current_cgroup_id(). The helper has a dependency on CONFIG_CGROUPS. When CONFIG_CGROUPS is not defined, using the helper will result the following verifier error: kernel subsystem misconfigured func bpf_get_current_cgroup_id#80 which is hard for users to interpret. Guarding the reference to bpf_get_current_cgroup_id_proto with CONFIG_CGROUPS will result in below better message: unknown func bpf_get_current_cgroup_id#80 Fixes: bf6fa2c893 ("bpf: implement bpf_get_current_cgroup_id() helper") Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2018-06-04 21:52:26 +02:00
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bpf	bpf: implement bpf_get_current_cgroup_id() helper	2018-06-03 18:22:41 -07:00
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trace	bpf: guard bpf_get_current_cgroup_id() with CONFIG_CGROUPS	2018-06-04 21:52:26 +02:00
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