Kernel

x86: enlightenment for ticket spin locks - base implementation
>>> On 30.06.10 at 10:05, Peter Zijlstra <peterz(a)infradead.org> wrote: On Tue, 2010-06-29 at 15:31 +0100, Jan Beulich wrote: Add optional (alternative instructions based) callout hooks to the contended ticket lock and the ticket unlock paths, to allow hypervisor specific code to be used for reducing/elim... 30 Jun 2010 09:46

[PATCH] act_mirred: combine duplicate code
act_mirred: combine duplicate code tcf_bstats is updated in any way, so we can do it earlier to reduce the size of the code. Signed-off-by: Changli Gao <xiaosuo(a)gmail.com> ---- net/sched/act_mirred.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/sched/act_mirred.c b/net/sch... 30 Jun 2010 05:25

Linxu preempt policy serial port communication
Hi, We have some problems about serial port. We need your expertise. The detail is like this: 1.Our Goal: We want to make test on serial port, and want to know whether the serial port communication is still OK under heavy system load. 2.Environment: 1). Two computer,one is as server,another is... 30 Jun 2010 05:25

[Bugfix] unregister_trace_probe needs to be called under mutex
Comment in unregister_trace_probe() says probe_lock will be held when it gets called. However there is a case where it might called without the probe_lock being held. Also since we are traversing the probe_list and deleting an element from the probe_list, probe_lock should be held. This was first pointed in upro... 30 Jun 2010 05:25

x86: enlightenment for ticket spin locks - Xen implementation
>>> On 30.06.10 at 10:05, Peter Zijlstra <peterz(a)infradead.org> wrote: On Tue, 2010-06-29 at 15:32 +0100, Jan Beulich wrote: +static DEFINE_PER_CPU(arch_rwlock_t, spinning_rm_lock) = __ARCH_RW_LOCK_UNLOCKED; why is that an arch_ lock? Because I don't think it is appropriate to use anything higher l... 30 Jun 2010 10:52

fs: icache RCU free inodes
On Thu, Jun 24, 2010 at 01:02:50PM +1000, npiggin(a)suse.de wrote: RCU free the struct inode. This will allow: Rather than what it will allow, what are the constraints this imposes on allocating and freeing a struct inode? e.g. XFS embeds the struct inode in a larger inode structure and does it's own allocation... 30 Jun 2010 10:52

x86: enlightenment for ticket spin locks - improve yield behavior on Xen
>>> On 30.06.10 at 10:11, Peter Zijlstra <peterz(a)infradead.org> wrote: On Tue, 2010-06-29 at 15:35 +0100, Jan Beulich wrote: The (only) additional overhead this introduces for native execution is the writing of the owning CPU in the lock acquire paths. Uhm, and growing the size of spinlock_t to ... 30 Jun 2010 07:35

[tip:sched/urgent] init: Fix comment
Commit-ID: 9715856922bf8475f5428c29b6f4a9eebc97d391 Gitweb: http://git.kernel.org/tip/9715856922bf8475f5428c29b6f4a9eebc97d391 Author: Peter Zijlstra <peterz(a)infradead.org> AuthorDate: Wed, 30 Jun 2010 10:37:11 +0200 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Wed, 30 Jun 2010 10:42:44 +0200 in... 30 Jun 2010 05:25

[PATCH] init: Fix comment
On Wed, 2010-06-30 at 12:32 +0400, Ilya Loginov wrote: I have tested patch v3. All works fine for me. I agree with Randy. The commentary should be fixed. By popular request.. --- Subject: init: Fix comment Apparently "pid-1" confuses people... Requested-by: Randy Dunlap <randy.dunlap(a)oracle.c... 30 Jun 2010 05:25

Add a pair of system calls to make extended file stats available [ver #2]
On Wednesday 30 June 2010 03:17:12 David Howells wrote: +static int xstat_check_param(struct xstat __user *buffer, size_t bufsize, + struct kstat *stat) +{ + u32 struct_version; + int ret; + + /* if the buffer isn't large enough, return how much we wante... 30 Jun 2010 09:46