3 files changed, 0 insertions, 20 deletions

diff --git a/fs/exec.c b/fs/exec.c
index 97d91a03fb13..dab85ecad686 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -28,7 +28,6 @@
 #include <linux/mm.h>
 #include <linux/stat.h>
 #include <linux/fcntl.h>
-#include <linux/smp_lock.h>
 #include <linux/swap.h>
 #include <linux/string.h>
 #include <linux/init.h>
@@ -1892,13 +1891,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
          */
         clear_thread_flag(TIF_SIGPENDING);
 
-        /*
-         * lock_kernel() because format_corename() is controlled by sysctl, which
-         * uses lock_kernel()
-         */
-        lock_kernel();
         ispipe = format_corename(corename, signr);
-        unlock_kernel();
 
         if (ispipe) {
                 int dump_count;
diff --git a/init/main.c b/init/main.c
index e97fadeec856..b8b6effe9ff4 100644
--- a/init/main.c
+++ b/init/main.c
@@ -441,7 +441,6 @@ static noinline void __init_refok rest_init(void)
         kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
         rcu_read_unlock();
         complete(&kthreadd_done);
-        unlock_kernel();
 
         /*
          * The boot idle thread must execute schedule()
@@ -563,7 +562,6 @@ asmlinkage void __init start_kernel(void)
  * Interrupts are still disabled. Do necessary setups, then
  * enable them
  */
-        lock_kernel();
         tick_init();
         boot_cpu_init();
         page_address_init();
@@ -820,7 +818,6 @@ static noinline int init_post(void)
         /* need to finish all async __init code before freeing the memory */
         async_synchronize_full();
         free_initmem();
-        unlock_kernel();
         mark_rodata_ro();
         system_state = SYSTEM_RUNNING;
         numa_default_policy();
@@ -860,8 +857,6 @@ static int __init kernel_init(void * unused)
          * Wait until kthreadd is all set-up.
          */
         wait_for_completion(&kthreadd_done);
-        lock_kernel();
-
         /*
          * init can allocate pages on any node
          */
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ed1032d6f81d..ba14a22be4cc 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -741,13 +741,6 @@ __acquires(kernel_lock)
                 return -1;
         }
 
-        /*
-         * When this gets called we hold the BKL which means that
-         * preemption is disabled. Various trace selftests however
-         * need to disable and enable preemption for successful tests.
-         * So we drop the BKL here and grab it after the tests again.
-         */
-        unlock_kernel();
         mutex_lock(&trace_types_lock);
 
         tracing_selftest_running = true;
@@ -829,7 +822,6 @@ __acquires(kernel_lock)
 #endif
 
  out_unlock:
-        lock_kernel();
         return ret;
 }