crash: move a few code bits to setup support of crash hotplug

[linux-2.6-microblaze.git] / kernel / kexec_core.c

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index e2f2574..4ff564b 100644 (file)
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -49,9 +49,6 @@
 
 atomic_t __kexec_lock = ATOMIC_INIT(0);
 
-/* Per cpu memory for storing cpu states in case of system crash. */
-note_buf_t __percpu *crash_notes;
-
 /* Flag to indicate we are going to kexec a new kernel */
 bool kexec_in_progress = false;
 
@@ -1218,40 +1215,6 @@ void crash_save_cpu(struct pt_regs *regs, int cpu)
        final_note(buf);
 }
 
-static int __init crash_notes_memory_init(void)
-{
-       /* Allocate memory for saving cpu registers. */
-       size_t size, align;
-
-       /*
-        * crash_notes could be allocated across 2 vmalloc pages when percpu
-        * is vmalloc based . vmalloc doesn't guarantee 2 continuous vmalloc
-        * pages are also on 2 continuous physical pages. In this case the
-        * 2nd part of crash_notes in 2nd page could be lost since only the
-        * starting address and size of crash_notes are exported through sysfs.
-        * Here round up the size of crash_notes to the nearest power of two
-        * and pass it to __alloc_percpu as align value. This can make sure
-        * crash_notes is allocated inside one physical page.
-        */
-       size = sizeof(note_buf_t);
-       align = min(roundup_pow_of_two(sizeof(note_buf_t)), PAGE_SIZE);
-
-       /*
-        * Break compile if size is bigger than PAGE_SIZE since crash_notes
-        * definitely will be in 2 pages with that.
-        */
-       BUILD_BUG_ON(size > PAGE_SIZE);
-
-       crash_notes = __alloc_percpu(size, align);
-       if (!crash_notes) {
-               pr_warn("Memory allocation for saving cpu register states failed\n");
-               return -ENOMEM;
-       }
-       return 0;
-}
-subsys_initcall(crash_notes_memory_init);
-
-
 /*
  * Move into place and start executing a preloaded standalone
  * executable.  If nothing was preloaded return an error.