linux/drivers/s390
Cedric Le Goater 9ec52099e4 [PATCH] replace cad_pid by a struct pid
There are a few places in the kernel where the init task is signaled.  The
ctrl+alt+del sequence is one them.  It kills a task, usually init, using a
cached pid (cad_pid).

This patch replaces the pid_t by a struct pid to avoid pid wrap around
problem.  The struct pid is initialized at boot time in init() and can be
modified through systctl with

	/proc/sys/kernel/cad_pid

[ I haven't found any distro using it ? ]

It also introduces a small helper routine kill_cad_pid() which is used
where it seemed ok to use cad_pid instead of pid 1.

[akpm@osdl.org: cleanups, build fix]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 07:57:25 -07:00
..
block [PATCH] BLOCK: Make it possible to disable the block layer [try #6] 2006-09-30 20:52:31 +02:00
char [PATCH] s390: update fs3270 to use a struct pid 2006-10-02 07:57:15 -07:00
cio [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
crypto [S390] zcrypt secure key cryptography extension. 2006-09-20 15:58:36 +02:00
net [IPV4]: inet_addr_type() annotations 2006-09-28 18:01:07 -07:00
scsi [PATCH] completions: lockdep annotate on stack completions 2006-10-01 00:39:24 -07:00
Kconfig [S390] Linux API for writing z/VM APPLDATA Monitor records. 2006-09-20 15:59:34 +02:00
Makefile [PATCH] s390: move s390_root_dev_* out of the cio layer 2006-01-06 08:33:49 -08:00
ebcdic.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
s390_rdev.c [PATCH] s390: kzalloc() conversion in drivers/s390 2006-03-24 07:33:18 -08:00
s390mach.c [PATCH] replace cad_pid by a struct pid 2006-10-02 07:57:25 -07:00
s390mach.h [PATCH] s390: Add missing memory constraint to stcrw() 2006-02-01 08:53:24 -08:00
sysinfo.c [S390] cleanup sysinfo and add system z9 specific extensions. 2006-09-20 15:59:10 +02:00