selftests/bpf: fix compiling loop{1, 2, 3}.c on s390

Use PT_REGS_RC(ctx) instead of ctx->rax, which is not present on s390.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Tested-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/testing/selftests/bpf/progs/loop1.c b/tools/testing/selftests/bpf/progs/loop1.c
index dea395af9ea9f57bb61028d082b13deb1c2d968c..7cdb7f878310b2dba828432d421ac61e0c69dfae 100644 (file)
--- a/tools/testing/selftests/bpf/progs/loop1.c
+++ b/tools/testing/selftests/bpf/progs/loop1.c
@@ -18,7 +18,7 @@ int nested_loops(volatile struct pt_regs* ctx)
        for (j = 0; j < 300; j++)
                for (i = 0; i < j; i++) {
                        if (j & 1)
-                               m = ctx->rax;
+                               m = PT_REGS_RC(ctx);
                        else
                                m = j;
                        sum += i * m;

diff --git a/tools/testing/selftests/bpf/progs/loop2.c b/tools/testing/selftests/bpf/progs/loop2.c
index 0637bd8e8bcf5827144fca281b08d9dbc88bf76f..9b2f808a2863732f7a3648ed6a875c1a93b57425 100644 (file)
--- a/tools/testing/selftests/bpf/progs/loop2.c
+++ b/tools/testing/selftests/bpf/progs/loop2.c
@@ -16,7 +16,7 @@ int while_true(volatile struct pt_regs* ctx)
        int i = 0;
 
        while (true) {
-               if (ctx->rax & 1)
+               if (PT_REGS_RC(ctx) & 1)
                        i += 3;
                else
                        i += 7;

diff --git a/tools/testing/selftests/bpf/progs/loop3.c b/tools/testing/selftests/bpf/progs/loop3.c
index 30a0f6cba080b9b5c69d0d073d568182287de074..d727657d51e2ab95afe97465f2ba9a63ce7bc23c 100644 (file)
--- a/tools/testing/selftests/bpf/progs/loop3.c
+++ b/tools/testing/selftests/bpf/progs/loop3.c
@@ -16,7 +16,7 @@ int while_true(volatile struct pt_regs* ctx)
        __u64 i = 0, sum = 0;
        do {
                i++;
-               sum += ctx->rax;
+               sum += PT_REGS_RC(ctx);
        } while (i < 0x100000000ULL);
        return sum;
 }