From 138d6153a139c318739f20e61309e5778427a73c Mon Sep 17 00:00:00 2001
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Date: Mon, 4 Apr 2016 22:31:34 +0530
Subject: samples/bpf: Enable powerpc support

Add the necessary definitions for building bpf samples on ppc.

Since ppc doesn't store function return address on the stack, modify how
PT_REGS_RET() and PT_REGS_FP() work.

Also, introduce PT_REGS_IP() to access the instruction pointer.

Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 samples/bpf/spintest_kern.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'samples/bpf/spintest_kern.c')

diff --git a/samples/bpf/spintest_kern.c b/samples/bpf/spintest_kern.c
index 4b27619d91a4..ce0167d09cdc 100644
--- a/samples/bpf/spintest_kern.c
+++ b/samples/bpf/spintest_kern.c
@@ -34,7 +34,7 @@ struct bpf_map_def SEC("maps") stackmap = {
 #define PROG(foo) \
 int foo(struct pt_regs *ctx) \
 { \
-	long v = ctx->ip, *val; \
+	long v = PT_REGS_IP(ctx), *val; \
 \
 	val = bpf_map_lookup_elem(&my_map, &v); \
 	bpf_map_update_elem(&my_map, &v, &v, BPF_ANY); \
-- 
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