@@ -17,16 +17,42 @@
#define _ARM_KPROBES_H
#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/notifier.h>
#define __ARCH_WANT_KPROBES_INSN_SLOT
#define MAX_INSN_SIZE 2
+#ifdef __ASSEMBLY__
+
+#define KPROBE_OPCODE_SIZE 4
+#define MAX_OPTINSN_SIZE (optprobe_template_end - optprobe_template_entry)
+
+#ifdef CONFIG_EARLY_KPROBES
+#define EARLY_KPROBES_CODES_AREA \
+ . = ALIGN(8); \
+ VMLINUX_SYMBOL(__early_kprobes_start) = .; \
+ VMLINUX_SYMBOL(__early_kprobes_code_area_start) = .; \
+ . = . + MAX_OPTINSN_SIZE * CONFIG_NR_EARLY_KPROBES_SLOTS; \
+ VMLINUX_SYMBOL(__early_kprobes_code_area_end) = .; \
+ . = ALIGN(8); \
+ VMLINUX_SYMBOL(__early_kprobes_insn_slot_start) = .; \
+ . = . + MAX_INSN_SIZE * KPROBE_OPCODE_SIZE * CONFIG_NR_EARLY_KPROBES_SLOTS;\
+ VMLINUX_SYMBOL(__early_kprobes_insn_slot_end) = .; \
+ VMLINUX_SYMBOL(__early_kprobes_end) = .;
+
+#else
+#define EARLY_KPROBES_CODES_AREA
+#endif
+
+#else
+
+#include <linux/ptrace.h>
+#include <linux/notifier.h>
+
#define flush_insn_slot(p) do { } while (0)
#define kretprobe_blacklist_size 0
typedef u32 kprobe_opcode_t;
+#define KPROBE_OPCODE_SIZE sizeof(kprobe_opcode_t)
struct kprobe;
#include <asm/probes.h>
@@ -83,4 +109,5 @@ struct arch_optimized_insn {
*/
};
+#endif /* __ASSEMBLY__ */
#endif /* _ARM_KPROBES_H */
@@ -11,6 +11,7 @@
#ifdef CONFIG_ARM_KERNMEM_PERMS
#include <asm/pgtable.h>
#endif
+#include <asm/kprobes.h>
#define PROC_INFO \
. = ALIGN(4); \
@@ -108,6 +109,7 @@ SECTIONS
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
+ EARLY_KPROBES_CODES_AREA
IDMAP_TEXT
#ifdef CONFIG_MMU
*(.fixup)
In arm's vmlinux.lds, introduces code area inside text section. Executable area used by early kprobes will be allocated from there. Signed-off-by: Wang Nan <wangnan0@huawei.com> --- arch/arm/include/asm/kprobes.h | 31 +++++++++++++++++++++++++++++-- arch/arm/kernel/vmlinux.lds.S | 2 ++ 2 files changed, 31 insertions(+), 2 deletions(-)