[PATCH] nfp: bpf: make array exp_mask static, makes object smaller

From: Colin King
Date: Mon Oct 07 2019 - 07:52:48 EST


From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Don't populate the array exp_mask on the stack but instead make it
static. Makes the object code smaller by 224 bytes.

Before:
text data bss dec hex filename
77832 2290 0 80122 138fa ethernet/netronome/nfp/bpf/jit.o

After:
text data bss dec hex filename
77544 2354 0 79898 1381a ethernet/netronome/nfp/bpf/jit.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/net/ethernet/netronome/nfp/bpf/jit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
index 5afcb3c4c2ef..c80bb83c8ac9 100644
--- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c
+++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
@@ -3952,7 +3952,7 @@ static void nfp_bpf_opt_neg_add_sub(struct nfp_prog *nfp_prog)
static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog)
{
struct nfp_insn_meta *meta1, *meta2;
- const s32 exp_mask[] = {
+ static const s32 exp_mask[] = {
[BPF_B] = 0x000000ffU,
[BPF_H] = 0x0000ffffU,
[BPF_W] = 0xffffffffU,
--
2.20.1