[PATCH] Kdump: Export crash notes section address through sysfs (625f1c82) · Commits · 戴 / test

arch/i386/kernel/crash.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -26,8 +26,6 @@
		#include <asm/apic.h>
		#include <mach_ipi.h>

		#define MAX_NOTE_BYTES 1024
		typedef u32 note_buf_t[MAX_NOTE_BYTES/4];

		note_buf_t crash_notes[NR_CPUS];

+0 −3

Original line number	Diff line number	Diff line
		@@ -20,9 +20,6 @@
		#include <asm/nmi.h>
		#include <asm/hw_irq.h>

		#define MAX_NOTE_BYTES 1024
		typedef u32 note_buf_t[MAX_NOTE_BYTES/4];

		note_buf_t crash_notes[NR_CPUS];

		void machine_crash_shutdown(void)

+5 −0

Original line number	Diff line number	Diff line
		@@ -25,4 +25,9 @@
		/* The native architecture */
		#define KEXEC_ARCH KEXEC_ARCH_386

		#define MAX_NOTE_BYTES 1024
		typedef u32 note_buf_t[MAX_NOTE_BYTES/4];

		extern note_buf_t crash_notes[];

		#endif /* _I386_KEXEC_H */

+5 −0

Original line number	Diff line number	Diff line
		@@ -25,4 +25,9 @@
		/* The native architecture */
		#define KEXEC_ARCH KEXEC_ARCH_X86_64

		#define MAX_NOTE_BYTES 1024
		typedef u32 note_buf_t[MAX_NOTE_BYTES/4];

		extern note_buf_t crash_notes[];

		#endif /* _X86_64_KEXEC_H */

+13 −0

Original line number	Diff line number	Diff line
		@@ -30,12 +30,25 @@ static ssize_t hotplug_seqnum_show(struct subsystem subsys, char page)
		KERNEL_ATTR_RO(hotplug_seqnum);
		#endif

		#ifdef CONFIG_KEXEC
		#include <asm/kexec.h>

		static ssize_t crash_notes_show(struct subsystem subsys, char page)
		{
		return sprintf(page, "%p\n", (void *)crash_notes);
		}
		KERNEL_ATTR_RO(crash_notes);
		#endif

		decl_subsys(kernel, NULL, NULL);
		EXPORT_SYMBOL_GPL(kernel_subsys);

		static struct attribute * kernel_attrs[] = {
		#ifdef CONFIG_HOTPLUG
		&hotplug_seqnum_attr.attr,
		#endif
		#ifdef CONFIG_KEXEC
		&crash_notes_attr.attr,
		#endif
		NULL
		};