uprobes: Kill arch_uprobe_enable/disable_step() hooks

Kill arch_uprobe_enable/disable_step() hooks, they do nothing and
nobody needs them.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>

1 files changed, 0 insertions, 10 deletions

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index abbfd8440a6d..39c75cc51efc 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1430,14 +1430,6 @@ static struct uprobe *find_active_uprobe(unsigned long bp_vaddr, int *is_swbp)
         return uprobe;
 }
 
-void __weak arch_uprobe_enable_step(struct arch_uprobe *arch)
-{
-}
-
-void __weak arch_uprobe_disable_step(struct arch_uprobe *arch)
-{
-}
-
 /*
  * Run handler and ask thread to singlestep.
  * Ensure all non-fatal signals cannot interrupt thread while it singlesteps.
@@ -1491,7 +1483,6 @@ static void handle_swbp(struct pt_regs *regs)
                 goto out;
 
         if (!pre_ssout(uprobe, regs, bp_vaddr)) {
-                arch_uprobe_enable_step(&uprobe->arch);
                 utask->active_uprobe = uprobe;
                 utask->state = UTASK_SSTEP;
                 return;
@@ -1523,7 +1514,6 @@ static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)
         else
                 WARN_ON_ONCE(1);
 
-        arch_uprobe_disable_step(&uprobe->arch);
         put_uprobe(uprobe);
         utask->active_uprobe = NULL;
         utask->state = UTASK_RUNNING;