linux

iv/linux

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Alexei Starovoitov b8cdc05173 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>

2016-03-09 23:26:51 -05:00

arraymap.c

bpf: check for reserved flag bits in array and stack maps

2016-03-08 15:28:31 -05:00

core.c

bpf: move clearing of A/X into classic to eBPF migration prologue

2015-12-18 16:04:51 -05:00

hashtab.c

bpf: pre-allocate hash map elements

2016-03-08 15:28:31 -05:00

helpers.c

bpf: split state from prandom_u32() and consolidate {c, e}BPF prngs