hc
2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a
kernel/samples/bpf/test_overhead_kprobe_kern.c
....@@ -7,9 +7,15 @@
77 #include <linux/version.h>
88 #include <linux/ptrace.h>
99 #include <uapi/linux/bpf.h>
10
-#include "bpf_helpers.h"
10
+#include <bpf/bpf_helpers.h>
11
+#include <bpf/bpf_tracing.h>
1112
12
-#define _(P) ({typeof(P) val = 0; bpf_probe_read(&val, sizeof(val), &P); val;})
13
+#define _(P) \
14
+ ({ \
15
+ typeof(P) val = 0; \
16
+ bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
17
+ val; \
18
+ })
1319
1420 SEC("kprobe/__set_task_comm")
1521 int prog(struct pt_regs *ctx)
....@@ -24,8 +30,9 @@
2430 tsk = (void *)PT_REGS_PARM1(ctx);
2531
2632 pid = _(tsk->pid);
27
- bpf_probe_read(oldcomm, sizeof(oldcomm), &tsk->comm);
28
- bpf_probe_read(newcomm, sizeof(newcomm), (void *)PT_REGS_PARM2(ctx));
33
+ bpf_probe_read_kernel(oldcomm, sizeof(oldcomm), &tsk->comm);
34
+ bpf_probe_read_kernel(newcomm, sizeof(newcomm),
35
+ (void *)PT_REGS_PARM2(ctx));
2936 signal = _(tsk->signal);
3037 oom_score_adj = _(signal->oom_score_adj);
3138 return 0;