Message ID | 20170920161159.25747-1-joelaf@google.com |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
Series | Add cross-compilation support to eBPF samples | expand |
On 09/20/2017 06:11 PM, Joel Fernandes wrote: > 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>
diff --git a/samples/bpf/map_perf_test_kern.c b/samples/bpf/map_perf_test_kern.c index 098c857f1eda..2b2ffb97018b 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 f388254896f6..a0310fc70057 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)); }