diff options
| author | Joel Fernandes <joelaf@google.com> | 2017-09-20 18:11:56 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-21 20:59:16 +0200 |
| commit | 95ec66968571bf0af0a22effdc1b9d9e62ea6630 (patch) | |
| tree | cd30fc80c00e8f343a7161e7829b405167081964 /samples | |
| parent | Merge branch 'net-setup_timer' (diff) | |
| download | linux-95ec66968571bf0af0a22effdc1b9d9e62ea6630.tar.xz linux-95ec66968571bf0af0a22effdc1b9d9e62ea6630.zip | |
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.c | 2 | ||||
| -rw-r--r-- | samples/bpf/map_perf_test_user.c | 2 |
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 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)); } |