2 files changed, 11 insertions, 45 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 5cff9a980c39..cb64c5889e02 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1143,30 +1143,6 @@ config TRACEPOINTS
 
 source "arch/Kconfig"
 
-config SLOW_WORK
-        default n
-        bool
-        help
-          The slow work thread pool provides a number of dynamically allocated
-          threads that can be used by the kernel to perform operations that
-          take a relatively long time.
-
-          An example of this would be CacheFiles doing a path lookup followed
-          by a series of mkdirs and a create call, all of which have to touch
-          disk.
-
-          See Documentation/slow-work.txt.
-
-config SLOW_WORK_DEBUG
-        bool "Slow work debugging through debugfs"
-        default n
-        depends on SLOW_WORK && DEBUG_FS
-        help
-          Display the contents of the slow work run queue through debugfs,
-          including items currently executing.
-
-          See Documentation/slow-work.txt.
-
 endmenu         # General setup
 
 config HAVE_GENERIC_DMA_COHERENT
diff --git a/init/main.c b/init/main.c
index 9b34c1b8d76c..b8b6effe9ff4 100644
--- a/init/main.c
+++ b/init/main.c
@@ -32,7 +32,6 @@
 #include <linux/start_kernel.h>
 #include <linux/security.h>
 #include <linux/smp.h>
-#include <linux/workqueue.h>
 #include <linux/profile.h>
 #include <linux/rcupdate.h>
 #include <linux/moduleparam.h>
@@ -66,11 +65,9 @@
 #include <linux/ftrace.h>
 #include <linux/async.h>
 #include <linux/kmemcheck.h>
-#include <linux/kmemtrace.h>
 #include <linux/sfi.h>
 #include <linux/shmem_fs.h>
 #include <linux/slab.h>
-#include <trace/boot.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -531,6 +528,7 @@ static void __init mm_init(void)
         page_cgroup_init_flatmem();
         mem_init();
         kmem_cache_init();
+        percpu_init_late();
         pgtable_cache_init();
         vmalloc_init();
 }
@@ -661,7 +659,6 @@ asmlinkage void __init start_kernel(void)
 #endif
         page_cgroup_init();
         enable_debug_pagealloc();
-        kmemtrace_init();
         kmemleak_init();
         debug_objects_mem_init();
         idr_init_cache();
@@ -723,38 +720,33 @@ int initcall_debug;
 core_param(initcall_debug, initcall_debug, bool, 0644);
 
 static char msgbuf[64];
-static struct boot_trace_call call;
-static struct boot_trace_ret ret;
 
 int do_one_initcall(initcall_t fn)
 {
         int count = preempt_count();
         ktime_t calltime, delta, rettime;
+        unsigned long long duration;
+        int ret;
 
         if (initcall_debug) {
-                call.caller = task_pid_nr(current);
-                printk("calling  %pF @ %i\n", fn, call.caller);
+                printk("calling  %pF @ %i\n", fn, task_pid_nr(current));
                 calltime = ktime_get();
-                trace_boot_call(&call, fn);
-                enable_boot_trace();
         }
 
-        ret.result = fn();
+        ret = fn();
 
         if (initcall_debug) {
-                disable_boot_trace();
                 rettime = ktime_get();
                 delta = ktime_sub(rettime, calltime);
-                ret.duration = (unsigned long long) ktime_to_ns(delta) >> 10;
-                trace_boot_ret(&ret, fn);
-                printk("initcall %pF returned %d after %Ld usecs\n", fn,
-                        ret.result, ret.duration);
+                duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+                printk("initcall %pF returned %d after %lld usecs\n", fn,
+                        ret, duration);
         }
 
         msgbuf[0] = 0;
 
-        if (ret.result && ret.result != -ENODEV && initcall_debug)
-                sprintf(msgbuf, "error code %d ", ret.result);
+        if (ret && ret != -ENODEV && initcall_debug)
+                sprintf(msgbuf, "error code %d ", ret);
 
         if (preempt_count() != count) {
                 strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
@@ -768,7 +760,7 @@ int do_one_initcall(initcall_t fn)
                 printk("initcall %pF returned with %s\n", fn, msgbuf);
         }
 
-        return ret.result;
+        return ret;
 }
 
 
@@ -794,7 +786,6 @@ static void __init do_initcalls(void)
  */
 static void __init do_basic_setup(void)
 {
-        init_workqueues();
         cpuset_init_smp();
         usermodehelper_init();
         init_tmpfs();
@@ -889,7 +880,6 @@ static int __init kernel_init(void * unused)
         smp_prepare_cpus(setup_max_cpus);
 
         do_pre_smp_initcalls();
-        start_boot_trace();
 
         smp_init();
         sched_init_smp();