From 05e59e5fb0064c97a1c10921ecd549f2d4a58565 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:14:40 +0000
Subject: [PATCH] add REDIRECT
---
kernel/samples/bpf/test_overhead_kprobe_kern.c | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/kernel/samples/bpf/test_overhead_kprobe_kern.c b/kernel/samples/bpf/test_overhead_kprobe_kern.c
index 468a66a..f6d593e 100644
--- a/kernel/samples/bpf/test_overhead_kprobe_kern.c
+++ b/kernel/samples/bpf/test_overhead_kprobe_kern.c
@@ -7,9 +7,15 @@
#include <linux/version.h>
#include <linux/ptrace.h>
#include <uapi/linux/bpf.h>
-#include "bpf_helpers.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
-#define _(P) ({typeof(P) val = 0; bpf_probe_read(&val, sizeof(val), &P); val;})
+#define _(P) \
+ ({ \
+ typeof(P) val = 0; \
+ bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
+ val; \
+ })
SEC("kprobe/__set_task_comm")
int prog(struct pt_regs *ctx)
@@ -24,8 +30,9 @@
tsk = (void *)PT_REGS_PARM1(ctx);
pid = _(tsk->pid);
- bpf_probe_read(oldcomm, sizeof(oldcomm), &tsk->comm);
- bpf_probe_read(newcomm, sizeof(newcomm), (void *)PT_REGS_PARM2(ctx));
+ bpf_probe_read_kernel(oldcomm, sizeof(oldcomm), &tsk->comm);
+ bpf_probe_read_kernel(newcomm, sizeof(newcomm),
+ (void *)PT_REGS_PARM2(ctx));
signal = _(tsk->signal);
oom_score_adj = _(signal->oom_score_adj);
return 0;
--
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