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-rw-r--r--fs/exec.c7
-rw-r--r--init/main.c5
-rw-r--r--kernel/trace/trace.c8
3 files changed, 0 insertions, 20 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 97d91a0..dab85ec 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 e97fade..b8b6eff 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 ed1032d..ba14a22 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;
}
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