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>
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@ -266,7 +266,7 @@ int stress_hash_map_lookup(struct pt_regs *ctx)
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return 0;
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}
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SEC("kprobe/sys_getpgrp")
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SEC("kprobe/sys_getppid")
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int stress_array_map_lookup(struct pt_regs *ctx)
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{
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u32 key = 1, i;
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@ -282,7 +282,7 @@ static void test_array_lookup(int cpu)
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start_time = time_get_ns();
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for (i = 0; i < max_cnt; i++)
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syscall(__NR_getpgrp, 0);
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syscall(__NR_getppid, 0);
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printf("%d:array_lookup %lld lookups per sec\n",
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cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time));
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}
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