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kprobes: Add new KPROBE_FLAG_ON_FUNC_ENTRY kprobe flag

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Adding KPROBE_FLAG_ON_FUNC_ENTRY kprobe flag to indicate that
attach address is on function entry. This is used in following
changes in get_func_ip helper to return correct function address.

Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220926153340.1621984-2-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa 2022-09-26 17:33:35 +02:00 • committed by Alexei Starovoitov
parent bec217197b
commit bf7a87f107
2 changed files with 6 additions and 1 deletions
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1
include/linux/kprobes.h
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@ -103,6 +103,7 @@ struct kprobe {
* this flag is only for optimized_kprobe.
*/
#define KPROBE_FLAG_FTRACE 8 /* probe is using ftrace */
#define KPROBE_FLAG_ON_FUNC_ENTRY 16 /* probe is on the function entry */
/* Has this kprobe gone ? */
static inline bool kprobe_gone(struct kprobe *p)