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authorDaniel Borkmann <dborkman@redhat.com>2014-09-10 15:01:02 +0200
committerDavid S. Miller <davem@davemloft.net>2014-09-10 14:05:07 -0700
commitb954d83421d51d822c42e5ab7b65069b25ad3005 (patch)
tree0a419ab76ac8abbc459472b7c5b79800bc3cdc45 /kernel/bpf
parent17fa1f983649580772e95ee95e2c096baa650219 (diff)
downloadlinux-b954d83421d51d822c42e5ab7b65069b25ad3005.tar.bz2
net: bpf: only build bpf_jit_binary_{alloc, free}() when jit selected
Since BPF JIT depends on the availability of module_alloc() and module_free() helpers (HAVE_BPF_JIT and MODULES), we better build that code only in case we have BPF_JIT in our config enabled, just like with other JIT code. Fixes builds for arm/marzen_defconfig and sh/rsk7269_defconfig. ==================== kernel/built-in.o: In function `bpf_jit_binary_alloc': /home/cwang/linux/kernel/bpf/core.c:144: undefined reference to `module_alloc' kernel/built-in.o: In function `bpf_jit_binary_free': /home/cwang/linux/kernel/bpf/core.c:164: undefined reference to `module_free' make: *** [vmlinux] Error 1 ==================== Reported-by: Fengguang Wu <fengguang.wu@intel.com> Fixes: 738cbe72adc5 ("net: bpf: consolidate JIT binary allocator") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf')
-rw-r--r--kernel/bpf/core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 8ee520f0ec70..8b7002488251 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -128,6 +128,7 @@ void __bpf_prog_free(struct bpf_prog *fp)
}
EXPORT_SYMBOL_GPL(__bpf_prog_free);
+#ifdef CONFIG_BPF_JIT
struct bpf_binary_header *
bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
unsigned int alignment,
@@ -163,6 +164,7 @@ void bpf_jit_binary_free(struct bpf_binary_header *hdr)
{
module_free(NULL, hdr);
}
+#endif /* CONFIG_BPF_JIT */
/* Base function for offset calculation. Needs to go into .text section,
* therefore keeping it non-static as well; will also be used by JITs