Simon Horman 6672f76a5a kdump/kexec: calculate note size at compile time ... Currently the size of the per-cpu region reserved to save crash notes is set by the per-architecture value MAX_NOTE_BYTES. Which in turn is currently set to 1024 on all supported architectures. While testing ia64 I recently discovered that this value is in fact too small. The particular setup I was using actually needs 1172 bytes. This lead to very tedious failure mode where the tail of one elf note would overwrite the head of another if they ended up being alocated sequentially by kmalloc, which was often the case. It seems to me that a far better approach is to caclculate the size that the area needs to be. This patch does just that. If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is needed then this should be as easy as making MAX_NOTE_BYTES larger in arch/asm-ia64/kexec.h. Perhaps 2048 would be a good choice. However, I think that the approach in this patch is a much more robust idea. Acked-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-05-08 11:15:07 -07:00
..
irq	IRQ: check for PERCPU flag only when adding first irqaction	2007-05-08 11:15:06 -07:00
power	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
time	Move timekeeping code to timekeeping.c	2007-05-08 11:15:06 -07:00
.gitignore
acct.c	[PATCH] kernel: change uses of f_{dentry, vfsmnt} to use f_path	2006-12-08 08:28:42 -08:00
audit.c	[NETLINK]: Switch cb_lock spinlock to mutex and allow to override it	2007-04-25 22:29:03 -07:00
audit.h	[PATCH] audit: AUDIT_PERM support	2006-09-11 13:32:30 -04:00
auditfilter.c	[PATCH] minor update to rule add/delete messages (ver 2)	2007-02-17 21:30:09 -05:00
auditsc.c	[PATCH] fix deadlock in audit_log_task_context()	2007-03-14 15:27:48 -07:00
capability.c	[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task	2007-02-12 09:48:32 -08:00
compat.c	[PATCH] Common compat_sys_sysinfo	2007-02-11 10:51:32 -08:00
configs.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
cpu.c	[PATCH] Fix microcode-related suspend problem	2007-04-02 10:06:09 -07:00
cpuset.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
delayacct.c	KMEM_CACHE(): simplify slab cache creation	2007-05-07 12:12:55 -07:00
die_notifier.c	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
dma.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
exec_domain.c
exit.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
extable.c
fork.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
futex.c	futex: restartable futex_wait	2007-05-08 11:15:03 -07:00
futex_compat.c	[PATCH] __user annotations: futex	2006-10-10 15:37:22 -07:00
hrtimer.c	[NET]: Fix networking compilation errors	2007-04-27 15:31:24 -07:00
itimer.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
kallsyms.c	Extend print_symbol capability	2007-04-30 16:40:39 -07:00
Kconfig.hz	[PATCH] HZ: 300Hz support	2006-12-07 08:39:36 -08:00
Kconfig.preempt
kexec.c	kdump/kexec: calculate note size at compile time	2007-05-08 11:15:07 -07:00
kfifo.c	[PATCH] Numerous fixes to kernel-doc info in source files.	2007-02-11 10:51:32 -08:00
kmod.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
kprobes.c	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
ksysfs.c	remove "struct subsystem" as it is no longer needed	2007-05-02 18:57:59 -07:00
kthread.c	[PATCH] Numerous fixes to kernel-doc info in source files.	2007-02-11 10:51:32 -08:00
latency.c	[PATCH] severing module.h->sched.h	2006-12-04 02:00:22 -05:00
lockdep.c	simplify the stacktrace code	2007-05-08 11:14:58 -07:00
lockdep_internals.h	[PATCH] lockdep: more chains	2006-12-07 08:39:43 -08:00
lockdep_proc.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
Makefile	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
module.c	module: use krealloc	2007-05-08 11:15:00 -07:00
mutex-debug.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
mutex-debug.h
mutex.c	[PATCH] lockdep: avoid lockdep warning in md	2006-12-08 08:28:39 -08:00
mutex.h
nsproxy.c	Merge sys_clone()/sys_unshare() nsproxy and namespace handling	2007-05-08 11:15:00 -07:00
panic.c	[PATCH] Add TAINT_USER and ability to set taint flags from userspace	2007-02-11 10:51:29 -08:00
params.c	remove "struct subsystem" as it is no longer needed	2007-05-02 18:57:59 -07:00
pid.c	Merge sys_clone()/sys_unshare() nsproxy and namespace handling	2007-05-08 11:15:00 -07:00
posix-cpu-timers.c	[PATCH] posix timers: RCU optimization for clock_gettime()	2007-02-16 08:14:00 -08:00
posix-timers.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
printk.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
profile.c	[PATCH] proc: remove useless (and buggy) ->nlink settings	2007-02-11 10:51:32 -08:00
ptrace.c	[PATCH] pidspace: is_init()	2006-09-29 09:18:12 -07:00
rcupdate.c	[PATCH] rcu: add a prefetch() in rcu_do_batch()	2006-12-07 08:39:40 -08:00
rcutorture.c	rcutorture: Mark rcu_torture_init as __init	2007-05-08 11:15:00 -07:00
relay.c	[PATCH] kernel-doc fixes for 2.6.20-git15 (non-drivers)	2007-03-01 14:53:37 -08:00
resource.c	libata/IDE: remove combined mode quirk	2007-04-28 14:15:59 -04:00
rtmutex-debug.c	Remove all inclusions of <linux/config.h>	2006-10-04 03:38:54 -04:00
rtmutex-debug.h
rtmutex-tester.c	[PATCH] Add include/linux/freezer.h and move definitions from sched.h	2006-12-07 08:39:27 -08:00
rtmutex.c	[PATCH] hrtimers: namespace and enum cleanup	2007-02-16 08:13:58 -08:00
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	add touch_all_softlockup_watchdogs()	2007-05-08 11:15:06 -07:00
seccomp.c
signal.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
softirq.c	[PATCH] tick-management: dyntick / highres functionality	2007-02-16 08:13:59 -08:00
softlockup.c	add touch_all_softlockup_watchdogs()	2007-05-08 11:15:06 -07:00
spinlock.c	[PATCH] lockdep: spin_lock_irqsave_nested()	2006-11-25 13:28:34 -08:00
srcu.c	[PATCH] SRCU: report out-of-memory errors	2006-10-04 07:55:30 -07:00
stacktrace.c
stop_machine.c	Use stop_machine_run in the Intel RNG driver	2007-05-08 11:15:00 -07:00
sys.c	remove software_suspend()	2007-05-07 12:12:59 -07:00
sys_ni.c	[PATCH] Create compat_sys_migrate_pages	2006-11-03 12:27:59 -08:00
sysctl.c	proc: maps protection	2007-05-08 11:15:02 -07:00
taskstats.c	KMEM_CACHE(): simplify slab cache creation	2007-05-07 12:12:55 -07:00
time.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
timer.c	Move timekeeping code to timekeeping.c	2007-05-08 11:15:06 -07:00
tsacct.c	[PATCH] time: x86_64: split x86_64/kernel/time.c up	2007-02-16 08:14:00 -08:00
uid16.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
user.c	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
utsname.c	Merge sys_clone()/sys_unshare() nsproxy and namespace handling	2007-05-08 11:15:00 -07:00
utsname_sysctl.c	[PATCH] sysctl: remove insert_at_head from register_sysctl	2007-02-14 08:09:59 -08:00
wait.c
workqueue.c	[PATCH] Add debugging feature /proc/timer_stat	2007-02-16 08:13:59 -08:00