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samples: bpf: enable trace samples for s390x

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The trace bpf samples do not compile on s390x because they use x86
specific fields from the "pt_regs" structure.

Fix this and access the fields via new PT_REGS macros.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Holzheu
2015-07-06 16:20:07 +02:00
committed by David S. Miller
parent 7baaa9092d
commit d912557b34
6 changed files with 37 additions and 12 deletions
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4
samples/bpf/tracex3_kern.c
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@@ -23,7 +23,7 @@ struct bpf_map_def SEC("maps") my_map = {
SEC("kprobe/blk_mq_start_request")
int bpf_prog1(struct pt_regs *ctx)
{
long rq = ctx->di;
long rq = PT_REGS_PARM1(ctx);
u64 val = bpf_ktime_get_ns();
bpf_map_update_elem(&my_map, &rq, &val, BPF_ANY);
@@ -51,7 +51,7 @@ struct bpf_map_def SEC("maps") lat_map = {
SEC("kprobe/blk_update_request")
int bpf_prog2(struct pt_regs *ctx)
{
long rq = ctx->di;
long rq = PT_REGS_PARM1(ctx);
u64 *value, l, base;
u32 index;