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authorAlexei Starovoitov <ast@fb.com>2016-03-09 18:56:49 -0800
committerDavid S. Miller <davem@davemloft.net>2016-03-09 23:26:51 -0500
commitb8cdc05173f05d212627b7aba7ec47fa334a79f2 (patch)
tree0f22256fd7e864e2770e2b7c6f7ee494457ac11c /kernel/bpf/helpers.c
parent3b8377dca1fd1974d245b2a04a708fc434761c65 (diff)
downloadlinux-sh-b8cdc05173f05d212627b7aba7ec47fa334a79f2.tar.gz
bpf: bpf_stackmap_copy depends on CONFIG_PERF_EVENTS
0-day bot reported build error: kernel/built-in.o: In function `map_lookup_elem': >> kernel/bpf/.tmp_syscall.o:(.text+0x329b3c): undefined reference to `bpf_stackmap_copy' when CONFIG_BPF_SYSCALL is set and CONFIG_PERF_EVENTS is not. Add weak definition to resolve it. This code path in map_lookup_elem() is never taken when CONFIG_PERF_EVENTS is not set. Fixes: 557c0c6e7df8 ("bpf: convert stackmap to pre-allocation") Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/helpers.c')
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