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// SPDX-License-Identifier: GPL-2.0
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
struct task_ls_map {
__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
__uint(map_flags, BPF_F_NO_PREALLOC);
__type(key, int);
__type(value, int);
} task_ls_map SEC(".maps");
long gp_seq;
SEC("syscall")
int do_call_rcu_tasks_trace(void *ctx)
{
struct task_struct *current;
int *v;
current = bpf_get_current_task_btf();
v = bpf_task_storage_get(&task_ls_map, current, NULL, BPF_LOCAL_STORAGE_GET_F_CREATE);
if (!v)
return 1;
/* Invoke call_rcu_tasks_trace */
return bpf_task_storage_delete(&task_ls_map, current);
}
SEC("kprobe/rcu_tasks_trace_postgp")
int rcu_tasks_trace_postgp(void *ctx)
{
__sync_add_and_fetch(&gp_seq, 1);
return 0;
}
char _license[] SEC("license") = "GPL";
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