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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2015-07-06 16:20:07 +0200
committerDavid S. Miller <davem@davemloft.net>2015-07-08 15:17:45 -0700
commitd912557b346099584bbbfa8d3c1e101c46e33b59 (patch)
tree2752bc31be26f1c27776a0d52439efdd81f9eed7 /samples/bpf/tracex2_kern.c
parent7baaa9092dedad5f670a7b1716b2ce9e1175ba02 (diff)
downloadlinux-sh-d912557b346099584bbbfa8d3c1e101c46e33b59.tar.gz
samples: bpf: enable trace samples for s390x
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>
Diffstat (limited to 'samples/bpf/tracex2_kern.c')
-rw-r--r--samples/bpf/tracex2_kern.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/samples/bpf/tracex2_kern.c b/samples/bpf/tracex2_kern.c
index dc50f4f2943f..b32367cfbff4 100644
--- a/samples/bpf/tracex2_kern.c
+++ b/samples/bpf/tracex2_kern.c
@@ -27,10 +27,10 @@ int bpf_prog2(struct pt_regs *ctx)
long init_val = 1;
long *value;
- /* x64 specific: read ip of kfree_skb caller.
+ /* x64/s390x specific: read ip of kfree_skb caller.
* non-portable version of __builtin_return_address(0)
*/
- bpf_probe_read(&loc, sizeof(loc), (void *)ctx->sp);
+ bpf_probe_read(&loc, sizeof(loc), (void *)PT_REGS_RET(ctx));
value = bpf_map_lookup_elem(&my_map, &loc);
if (value)
@@ -79,7 +79,7 @@ struct bpf_map_def SEC("maps") my_hist_map = {
SEC("kprobe/sys_write")
int bpf_prog3(struct pt_regs *ctx)
{
- long write_size = ctx->dx; /* arg3 */
+ long write_size = PT_REGS_PARM3(ctx);
long init_val = 1;
long *value;
struct hist_key key = {};