kernel.git/drivers/char/sysrq.c, branch linux-2.6.28.y

fix documentation of sysrq-q really

2008-10-20T10:44:32Z

SysRq-Q also dumps information about the clockevent devices. Signed-off-by: Thomas Gleixner

Fix documentation of sysrq-q

2008-10-20T10:44:32Z

I fell into the trap recently that it only dumps hrtimers instead of all timers. Fix the documentation. Signed-off-by: Andi Kleen Cc: torvalds@linux-foundation.org Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner

proc: move sysrq-trigger out of fs/proc/

2008-10-16T18:21:47Z

Move it into sysrq.c, along with the rest of the sysrq implementation. Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sysrq: add enable_mask in sysrq_moom_op

2008-10-16T18:21:31Z

It is written in the Documentation/sysrq.txt that oom-killer is enabled when we set "64" in /proc/sys/kernel/sysrq: Here is the list of possible values in /proc/sys/kernel/sysrq: 64 - enable signalling of processes (term, kill, oom-kill) ^^^^^^^^ but enable_mask is not set in sysrq_moom_op. Signed-off-by: Naohiro Ooiwa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fix: "smp_call_function: get rid of the unused nonatomic/retry argument"

2008-06-27T09:52:45Z

drivers/char/sysrq.c: In function 'sysrq_showregs_othercpus': drivers/char/sysrq.c:218: error: too many arguments to function 'smp_call_function' Signed-off-by: Ingo Molnar

sparc64: Add global register dumping facility.

2008-05-20T07:33:45Z

When a cpu really is stuck in the kernel, it can be often impossible to figure out which cpu is stuck where. The worst case is when the stuck cpu has interrupts disabled. Therefore, implement a global cpu state capture that uses SMP message interrupts which are not disabled by the normal IRQ enable/disable APIs of the kernel. As long as we can get a sysrq 'y' to the kernel, we can get a dump. Even if the console interrupt cpu is wedged, we can trigger it from userspace using /proc/sysrq-trigger The output is made compact so that this facility is more useful on high cpu count systems, which is where this facility will likely find itself the most useful :) Signed-off-by: David S. Miller

sysrq: add show-backtrace-on-all-cpus function

2008-04-29T15:06:03Z

SysRQ-P is not always useful on SMP systems, since it usually ends up showing the backtrace of a CPU that is doing just fine, instead of the backtrace of the CPU that is having problems. This patch adds SysRQ show-all-cpus(L), which shows the backtrace of every active CPU in the system. It skips idle CPUs because some SMP systems are just too large and we already know what the backtrace of the idle task looks like. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Rik van Riel Randy Dunlap Cc: Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: introduce node_zonelist() for accessing the zonelist for a GFP mask

2008-04-28T15:58:18Z

Introduce a node_zonelist() helper function. It is used to lookup the appropriate zonelist given a node and a GFP mask. The patch on its own is a cleanup but it helps clarify parts of the two-zonelist-per-node patchset. If necessary, it can be merged with the next patch in this set without problems. Reviewed-by: Christoph Lameter Signed-off-by: Mel Gorman Signed-off-by: Lee Schermerhorn Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Christoph Lameter Cc: Hugh Dickins Cc: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

pid namespaces: define is_global_init() and is_container_init()

2007-10-19T18:53:37Z

is_init() is an ambiguous name for the pid==1 check. Split it into is_global_init() and is_container_init(). A cgroup init has it's tsk->pid == 1. A global init also has it's tsk->pid == 1 and it's active pid namespace is the init_pid_ns. But rather than check the active pid namespace, compare the task structure with 'init_pid_ns.child_reaper', which is initialized during boot to the /sbin/init process and never changes. Changelog: 2.6.22-rc4-mm2-pidns1: - Use 'init_pid_ns.child_reaper' to determine if a given task is the global init (/sbin/init) process. This would improve performance and remove dependence on the task_pid(). 2.6.21-mm2-pidns2: - [Sukadev Bhattiprolu] Changed is_container_init() calls in {powerpc, ppc,avr32}/traps.c for the _exception() call to is_global_init(). This way, we kill only the cgroup if the cgroup's init has a bug rather than force a kernel panic. [akpm@linux-foundation.org: fix comment] [sukadev@us.ibm.com: Use is_global_init() in arch/m32r/mm/fault.c] [bunk@stusta.de: kernel/pid.c: remove unused exports] [sukadev@us.ibm.com: Fix capability.c to work with threaded init] Signed-off-by: Serge E. Hallyn Signed-off-by: Sukadev Bhattiprolu Acked-by: Pavel Emelianov Cc: Eric W. Biederman Cc: Cedric Le Goater Cc: Dave Hansen Cc: Herbert Poetzel Cc: Kirill Korotaev Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

add CONFIG_VT_UNICODE

2007-10-17T15:42:56Z

As of now, the kernel defaults to non-unicode and XLATE for the keyboard. We've been changing this in Fedora, but that requires patching the defaults in the kernel. The attached introduces CONFIG_VT_UNICODE, which sets the console in unicode mode by default on boot, including both the virtual terminal and the keyboard driver. Signed-off-by: Bill Nottingham Cc: Samuel Thibault Cc: Dmitry Torokhov Cc: Jiri Kosina Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds