mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
fd59d231f8
This patch set frees the restriction that makedumpfile users should install a vmlinux file (including the debugging information) into each system. makedumpfile command is the dump filtering feature for kdump. It creates a small dumpfile by filtering unnecessary pages for the analysis. To distinguish unnecessary pages, it needs a vmlinux file including the debugging information. These days, the debugging package becomes a huge file, and it is hard to install it into each system. To solve the problem, kdump developers discussed it at lkml and kexec-ml. As the result, we reached the conclusion that necessary information for dump filtering (called "vmcoreinfo") should be embedded into the first kernel file and it should be accessed through /proc/vmcore during the second kernel. (http://www.uwsg.iu.edu/hypermail/linux/kernel/0707.0/1806.html) Dan Aloni created the patch set for the above implementation. (http://www.uwsg.iu.edu/hypermail/linux/kernel/0707.1/1053.html) And I updated it for multi architectures and memory models. (http://lists.infradead.org/pipermail/kexec/2007-August/000479.html) Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp> Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* This file contains NUMA specific prototypes and definitions.
|
|
*
|
|
* 2002/08/05 Erich Focht <efocht@ess.nec.de>
|
|
*
|
|
*/
|
|
#ifndef _ASM_IA64_NUMA_H
|
|
#define _ASM_IA64_NUMA_H
|
|
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
#include <linux/cache.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/numa.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/threads.h>
|
|
|
|
#include <asm/mmzone.h>
|
|
|
|
extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
|
|
extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
|
|
extern pg_data_t *pgdat_list[MAX_NUMNODES];
|
|
|
|
/* Stuff below this line could be architecture independent */
|
|
|
|
extern int num_node_memblks; /* total number of memory chunks */
|
|
|
|
/*
|
|
* List of node memory chunks. Filled when parsing SRAT table to
|
|
* obtain information about memory nodes.
|
|
*/
|
|
|
|
struct node_memblk_s {
|
|
unsigned long start_paddr;
|
|
unsigned long size;
|
|
int nid; /* which logical node contains this chunk? */
|
|
int bank; /* which mem bank on this node */
|
|
};
|
|
|
|
struct node_cpuid_s {
|
|
u16 phys_id; /* id << 8 | eid */
|
|
int nid; /* logical node containing this CPU */
|
|
};
|
|
|
|
extern struct node_memblk_s node_memblk[NR_NODE_MEMBLKS];
|
|
extern struct node_cpuid_s node_cpuid[NR_CPUS];
|
|
|
|
/*
|
|
* ACPI 2.0 SLIT (System Locality Information Table)
|
|
* http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
|
|
*
|
|
* This is a matrix with "distances" between nodes, they should be
|
|
* proportional to the memory access latency ratios.
|
|
*/
|
|
|
|
extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES];
|
|
#define node_distance(from,to) (numa_slit[(from) * num_online_nodes() + (to)])
|
|
|
|
extern int paddr_to_nid(unsigned long paddr);
|
|
|
|
#define local_nodeid (cpu_to_node_map[smp_processor_id()])
|
|
|
|
extern void map_cpu_to_node(int cpu, int nid);
|
|
extern void unmap_cpu_from_node(int cpu, int nid);
|
|
|
|
|
|
#else /* !CONFIG_NUMA */
|
|
#define map_cpu_to_node(cpu, nid) do{}while(0)
|
|
#define unmap_cpu_from_node(cpu, nid) do{}while(0)
|
|
|
|
#define paddr_to_nid(addr) 0
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#endif /* _ASM_IA64_NUMA_H */
|