From: Björn Davidsson <bjorn.davidsson@xxxxxxxxxxxxxx>
The common kprobes blacklist contains x86-specific symbols.
Looking for these in kallsyms takes unnecessary time during startup
on non-X86 platform. The symbols where moved to
arch/x86/kernel/kprobes/core.c.
Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: linux-arch@xxxxxxxxxxxxxxx
Reviewed-by: Radovan Lekanovic <radovan.lekanovic@xxxxxxxxxxxxxx>
Signed-off-by: Björn Davidsson <bjorn.davidsson@xxxxxxxxxxxxxx>
Signed-off-by: Oskar Andero <oskar.andero@xxxxxxxxxxxxxx>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
---
arch/x86/kernel/kprobes/core.c | 7 +++++++
kernel/kprobes.c | 3 ---
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 7bfe318..41ce6c1 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -65,6 +65,13 @@ void jprobe_return_end(void);
DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+const char * const arch_kprobes_blacksyms[] = {
+ "native_get_debugreg",
+ "irq_entries_start",
+ "common_interrupt",
+};
+const size_t arch_kprobes_blacksyms_size = ARRAY_SIZE(arch_kprobes_blacksyms);
+
#define stack_addr(regs) ((unsigned long *)kernel_stack_pointer(regs))
#define W(row, b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, ba, bb, bc, bd, be, bf)\
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 2458ae1..b289384 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -95,9 +95,6 @@ static raw_spinlock_t *kretprobe_table_lock_ptr(unsigned long hash)
*/
static const char * const common_kprobes_blacksyms[] = {
"preempt_schedule",
- "native_get_debugreg",
- "irq_entries_start",
- "common_interrupt",
"mcount", /* mcount can be called from everywhere */
};
static const size_t common_kprobes_blacksyms_size =
--
1.8.1.5
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