linux-kernel - [Patch 5/8] ia64: implement crashkernel=auto

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Message-Id: <20090821065729.4855.47860.sendpatchset@localhost.localdomain>
Date:	Fri, 21 Aug 2009 02:55:04 -0400
From:	Amerigo Wang <amwang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	tony.luck@...el.com, linux-ia64@...r.kernel.org,
	Neil Horman <nhorman@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	Amerigo Wang <amwang@...hat.com>, akpm@...ux-foundation.org,
	bernhard.walle@....de, Fenghua Yu <fenghua.yu@...el.com>,
	kamezawa.hiroyu@...fujitsu.com,
	Anton Vorontsov <avorontsov@...mvista.com>
Subject: [Patch 5/8] ia64: implement crashkernel=auto


Since in patch 3/8 we already implement the generic part, this will
add the rest part for ia64.

Signed-off-by: WANG Cong <amwang@...hat.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: Tony Luck <tony.luck@...el.com>

---

Index: linux-2.6/arch/ia64/include/asm/kexec.h
===================================================================
--- linux-2.6.orig/arch/ia64/include/asm/kexec.h
+++ linux-2.6/arch/ia64/include/asm/kexec.h
@@ -19,6 +19,29 @@
                 flush_icache_range(page_addr, page_addr + PAGE_SIZE); \
         } while(0)
 
+#ifdef CONFIG_KEXEC_AUTO_RESERVE
+#define ARCH_HAS_DEFAULT_CRASH_SIZE
+static inline
+unsigned long long arch_default_crash_size(unsigned long long total_size)
+{
+	if (total_size >= 4ULL<<30 && total_size < 12ULL<<30)
+		return 1ULL<<28;
+	else if (total_size >= 12ULL<<30 && total_size < 128ULL<<30)
+		return 1ULL<<29;
+	else if (total_size >= 128ULL<<30 && total_size < 256ULL<<30)
+		return 3ULL<<28;
+	else if (total_size >= 256ULL<<30 && total_size < 378ULL<<30)
+		return 1ULL<<30;
+	else if (total_size >= 318ULL<<30 && total_size < 512ULL<<30)
+		return 3ULL<<29;
+	else if (total_size >= 512ULL<<30 && total_size < 768ULL<<30)
+		return 2ULL<<30;
+	else if (total_size >= 768ULL<<30)
+		return 3ULL<<30;
+}
+#include <asm-generic/kexec.h>
+#endif
+
 extern struct kimage *ia64_kimage;
 extern const unsigned int relocate_new_kernel_size;
 extern void relocate_new_kernel(unsigned long, unsigned long,
--
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