x86/setup/crash: Remove alignment variable

Use a macro instead. No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fd9e178aa8906dea8cd9dab6fe20c928d3750d9b..ea086dd8e8217fcfaa84ec1d5621d5ac1cb34d15 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -480,6 +480,9 @@ static void __init memblock_x86_reserve_range_setup_data(void)
 
 #ifdef CONFIG_KEXEC_CORE
 
+/* 16M alignment for crash kernel regions */
+#define CRASH_ALIGN            (16 << 20)
+
 /*
  * Keep the crash kernel below this limit.  On 32 bits earlier kernels
  * would limit the kernel to the low 512 MiB due to mapping restrictions.
@@ -496,7 +499,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)
 static int __init reserve_crashkernel_low(void)
 {
 #ifdef CONFIG_X86_64
-       const unsigned long long alignment = 16<<20;    /* 16M */
        unsigned long long low_base = 0, low_size = 0;
        unsigned long total_low_mem;
        unsigned long long base;
@@ -525,7 +527,7 @@ static int __init reserve_crashkernel_low(void)
                        return 0;
        }
 
-       low_base = memblock_find_in_range(low_size, 1ULL << 32, low_size, alignment);
+       low_base = memblock_find_in_range(low_size, 1ULL << 32, low_size, CRASH_ALIGN);
        if (!low_base) {
                pr_err("Cannot reserve %ldMB crashkernel low memory, please try smaller size.\n",
                       (unsigned long)(low_size >> 20));
@@ -548,7 +550,6 @@ static int __init reserve_crashkernel_low(void)
 
 static void __init reserve_crashkernel(void)
 {
-       const unsigned long long alignment = 16<<20;    /* 16M */
        unsigned long long total_mem;
        unsigned long long crash_size, crash_base;
        bool high = false;
@@ -572,10 +573,10 @@ static void __init reserve_crashkernel(void)
                /*
                 *  kexec want bzImage is below CRASH_KERNEL_ADDR_MAX
                 */
-               crash_base = memblock_find_in_range(alignment,
+               crash_base = memblock_find_in_range(CRASH_ALIGN,
                                                    high ? CRASH_ADDR_HIGH_MAX
                                                         : CRASH_ADDR_LOW_MAX,
-                                                   crash_size, alignment);
+                                                   crash_size, CRASH_ALIGN);
                if (!crash_base) {
                        pr_info("crashkernel reservation failed - No suitable area found.\n");
                        return;