linux-stable.git/arch/ia64/kernel/process.c, branch linux-3.9.y

ia64 idle: delete stale (*idle)() function pointer

2013-03-29T18:12:25+00:00

Commit 3e7fc708eb41 ("ia64 idle: delete pm_idle") in 3.9-rc1 didn't
finish the job, leaving an un-initialized reference to (*idle)().

[ Haven't seen a crash from this - but seems like we are just being
  lucky that "idle" is zero so it does get initialized before we jump to
  randomland  - Len ]

Reported-by: Lars-Peter Clausen 
Signed-off-by: Len Brown 
Signed-off-by: Tony Luck 
Signed-off-by: Linus Torvalds

ia64 idle: delete pm_idle

2013-02-18T04:37:06+00:00

pm_idle() on ia64 was a synonym for default_idle().
So simply invoke default_idle() directly.

Signed-off-by: Len Brown 
Cc: linux-ia64@vger.kernel.org

flagday: don't pass regs to copy_thread()

2012-11-29T04:43:42+00:00

Signed-off-by: Al Viro

ia64: switch to generic sys_execve()

2012-10-19T18:28:40+00:00

Acked-by: Tony Luck 
Tested-by: Tony Luck 
Signed-off-by: Al Viro

ia64: switch to generic kernel_thread()/kernel_execve()

2012-10-19T18:28:09+00:00

Acked-by: Tony Luck 
Tested-by: Tony Luck 
Signed-off-by: Al Viro

ia64: don't mess with ar_bspstore in kernel_thread()

2012-10-14T23:33:54+00:00

the only thing we use that for is in copy_thread(), where the way
we set it will result in rbs_size being 0.  Just move that calculating
rbs_size and copying rbs to non-kernel-thread side of
if (user_mode(regs)) in copy_thread() and set rbs_size to 0 on
kernel thread side.

Signed-off-by: Al Viro

ia64: dead code in copy_thread() since 2004

2012-10-14T23:33:53+00:00

It used to be called with NULL regs when creating idle threads on
secondaries.  Not used that way since wli had buried that kludge...

Signed-off-by: Al Viro

vfs: define struct filename and have getname() return it

2012-10-13T00:14:55+00:00

getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.

For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.

This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.

Later, we'll add other information to the struct as it becomes
convenient.

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

Merge tag 'please-pull-ia64-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

2012-10-01T20:56:35+00:00

Pull ia64 update from Tony Luck:
 "Usual mish-mash of ia64 fixes for next merge window"

* tag 'please-pull-ia64-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  [IA64] xen: Fix return value check in xencomm_vtop()
  [IA64] Must enable interrupts in do_notify_resume_user before calling tracehook_notify_resume()
  [IA64] kexec: Move the dereference below the NULL test
  [IA64] Fix a node distance bug

ia64: Add missing RCU idle APIs on idle loop

2012-09-23T14:44:52+00:00

Traditionally, the entire idle task served as an RCU quiescent state.
But when RCU read side critical sections started appearing within the
idle loop, this traditional strategy became untenable.  The fix was to
create new RCU APIs named rcu_idle_enter() and rcu_idle_exit(), which
must be called by each architecture's idle loop so that RCU can tell
when it is safe to ignore a given idle CPU.

Unfortunately, this fix was never applied to ia64, a shortcoming remedied
by this commit.

Reported by: Tony Luck 
Signed-off-by: Paul E. McKenney 
Cc:  # 3.3+
Signed-off-by: Paul E. McKenney 
Tested by: Tony Luck 
Reviewed-by: Josh Triplett