Following early kprobe patches will enable kprobe registering very
early, even before kprobe system initialized. kprobe_is_early() can be
used to check whether we are working on early kprobes.
Signed-off-by: Wang Nan <wangn...@huawei.com>
---
include/linux/kprobes.h | 2 ++
kernel/kprobes.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 1ab5475..a3de759 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -50,6 +50,8 @@
#define KPROBE_REENTER 0x00000004
#define KPROBE_HIT_SSDONE 0x00000008
+extern bool kprobes_is_early(void);
+
#else /* CONFIG_KPROBES */
typedef int kprobe_opcode_t;
struct arch_specific_insn {
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 427d761..2e728a4 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -69,6 +69,12 @@
static int kprobes_initialized;
static int kprobes_blacklist_initialized;
+
+bool kprobes_is_early(void)
+{
+ return !(kprobes_initialized && kprobes_blacklist_initialized);
+}
+
static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE];
static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];
--
1.8.4
--
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