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| author | David S. Miller <davem@davemloft.net> | 2017-05-31 19:35:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-31 19:35:00 -0700 |
| commit | a5e2ee5da47412c98b023acb49d0787e40e4ec6a (patch) | |
| tree | d62a0564b8fd44b3b9590a0c010445ec6bd331bf /arch/sparc/net | |
| parent | 551f40c42f02000077a6cc5416bfe213052dbbf0 (diff) | |
| download | linux-a5e2ee5da47412c98b023acb49d0787e40e4ec6a.tar.bz2 | |
bpf: Take advantage of stack_depth tracking in sparc64 JIT
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/net')
| -rw-r--r-- | arch/sparc/net/bpf_jit_comp_64.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c index 4a52d34facf9..098874a81f6e 100644 --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -802,8 +802,13 @@ static void build_prologue(struct jit_ctx *ctx) { s32 stack_needed = BASE_STACKFRAME; - if (ctx->saw_frame_pointer || ctx->saw_tail_call) - stack_needed += MAX_BPF_STACK; + if (ctx->saw_frame_pointer || ctx->saw_tail_call) { + struct bpf_prog *prog = ctx->prog; + u32 stack_depth; + + stack_depth = prog->aux->stack_depth; + stack_needed += round_up(stack_depth, 16); + } if (ctx->saw_tail_call) stack_needed += 8; |