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authorJoel Fernandes <joelaf@google.com>2017-09-20 09:11:56 -0700
committerDavid S. Miller <davem@davemloft.net>2017-09-21 11:59:16 -0700
commit95ec66968571bf0af0a22effdc1b9d9e62ea6630 (patch)
treecd30fc80c00e8f343a7161e7829b405167081964 /samples
parentae3e24fd547e9f0b1443c1f004c29165180eb101 (diff)
downloadop-kernel-dev-95ec66968571bf0af0a22effdc1b9d9e62ea6630.zip
op-kernel-dev-95ec66968571bf0af0a22effdc1b9d9e62ea6630.tar.gz
samples/bpf: Use getppid instead of getpgrp for array map stress
When cross-compiling the bpf sample map_perf_test for aarch64, I find that __NR_getpgrp is undefined. This causes build errors. This syscall is deprecated and requires defining __ARCH_WANT_SYSCALL_DEPRECATED. To avoid having to define that, just use a different syscall (getppid) for the array map stress test. Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Joel Fernandes <joelaf@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/map_perf_test_kern.c2
-rw-r--r--samples/bpf/map_perf_test_user.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/samples/bpf/map_perf_test_kern.c b/samples/bpf/map_perf_test_kern.c
index 098c857..2b2ffb9 100644
--- a/samples/bpf/map_perf_test_kern.c
+++ b/samples/bpf/map_perf_test_kern.c
@@ -266,7 +266,7 @@ int stress_hash_map_lookup(struct pt_regs *ctx)
return 0;
}
-SEC("kprobe/sys_getpgrp")
+SEC("kprobe/sys_getppid")
int stress_array_map_lookup(struct pt_regs *ctx)
{
u32 key = 1, i;
diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c
index f388254..a0310fc 100644
--- a/samples/bpf/map_perf_test_user.c
+++ b/samples/bpf/map_perf_test_user.c
@@ -282,7 +282,7 @@ static void test_array_lookup(int cpu)
start_time = time_get_ns();
for (i = 0; i < max_cnt; i++)
- syscall(__NR_getpgrp, 0);
+ syscall(__NR_getppid, 0);
printf("%d:array_lookup %lld lookups per sec\n",
cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time));
}
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