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15ac1adf0f
Adding test that makes sure we can't mix sleepable and non-sleepable bpf programs in the BPF_MAP_TYPE_PROG_ARRAY map and that we can do tail call in the sleepable program. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20260130081208.1130204-3-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
44 lines
753 B
C
44 lines
753 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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#include "bpf_test_utils.h"
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struct {
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__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
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__uint(max_entries, 1);
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__uint(key_size, sizeof(__u32));
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__array(values, void (void));
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} jmp_table SEC(".maps");
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SEC("?uprobe")
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int uprobe_normal(void *ctx)
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{
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bpf_tail_call_static(ctx, &jmp_table, 0);
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return 0;
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}
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SEC("?uprobe.s")
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int uprobe_sleepable_1(void *ctx)
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{
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bpf_tail_call_static(ctx, &jmp_table, 0);
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return 0;
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}
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int executed = 0;
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int my_pid = 0;
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SEC("?uprobe.s")
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int uprobe_sleepable_2(void *ctx)
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{
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int pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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executed++;
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return 0;
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}
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char __license[] SEC("license") = "GPL";
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