[PATCH] kdump: dynamic per cpu allocation of memory for saving cpu registers

[powerpc.git] / arch / i386 / kernel / crash.c

diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c
index 10fe656..f1e65c2 100644 (file)
--- a/arch/i386/kernel/crash.c
+++ b/arch/i386/kernel/crash.c
@@ -25,7 +25,6 @@
 #include <mach_ipi.h>
 
 
-note_buf_t crash_notes[NR_CPUS];
 /* This keeps a track of which one is crashing cpu. */
 static int crashing_cpu;
 
@@ -72,7 +71,9 @@ static void crash_save_this_cpu(struct pt_regs *regs, int cpu)
         * squirrelled away.  ELF notes happen to provide
         * all of that that no need to invent something new.
         */
-       buf = &crash_notes[cpu][0];
+       buf = (u32*)per_cpu_ptr(crash_notes, cpu);
+       if (!buf)
+               return;
        memset(&prstatus, 0, sizeof(prstatus));
        prstatus.pr_pid = current->pid;
        elf_core_copy_regs(&prstatus.pr_reg, regs);