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authorMasami Hiramatsu <mhiramat@kernel.org>2020-03-26 15:50:11 +0100
committerThomas Gleixner <tglx@linutronix.de>2020-05-12 17:15:33 +0200
commitd85eaa9411472a99de4b5732cb59c8bae629d5f1 (patch)
tree4d35f76035c78c48da9b96cd298d462643342fdc /samples/kprobes/kretprobe_example.c
parentkprobes: Support NOKPROBE_SYMBOL() in modules (diff)
downloadlinux-d85eaa9411472a99de4b5732cb59c8bae629d5f1.tar.xz
linux-d85eaa9411472a99de4b5732cb59c8bae629d5f1.zip
samples/kprobes: Add __kprobes and NOKPROBE_SYMBOL() for handlers.
Add __kprobes and NOKPROBE_SYMBOL() for sample kprobe handlers. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200505134059.878578033@linutronix.de
Diffstat (limited to 'samples/kprobes/kretprobe_example.c')
-rw-r--r--samples/kprobes/kretprobe_example.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/samples/kprobes/kretprobe_example.c b/samples/kprobes/kretprobe_example.c
index 186315ca88b3..013e8e6ebae9 100644
--- a/samples/kprobes/kretprobe_example.c
+++ b/samples/kprobes/kretprobe_example.c
@@ -48,6 +48,7 @@ static int entry_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
data->entry_stamp = ktime_get();
return 0;
}
+NOKPROBE_SYMBOL(entry_handler);
/*
* Return-probe handler: Log the return value and duration. Duration may turn
@@ -67,6 +68,7 @@ static int ret_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
func_name, retval, (long long)delta);
return 0;
}
+NOKPROBE_SYMBOL(ret_handler);
static struct kretprobe my_kretprobe = {
.handler = ret_handler,