[PATCH] mm: percpu: Add PCPU_FC_FIXED to pcpu_fc for setting fixed pcpu_atom_size.

From: ShuoX Liu <shuox.liu@intel.com> We are enabling Android on Medfield. On i386, if the board has more physical memory, it means the vmalloc space is small. If the vmalloc space is big, it means physical memory is small. Dynamic percpu ...

Message posted on the April 25th, 2012 - 5:00 AM ET

[PATCH] module, fix percpu reserved memory exhaustion

Rusty, There is likely some subtlety of moving the module mutex that I'm unaware of. What I can say is that this patch seems to resolve the problem for me, or at least through 100+ reboots I have not seen the problem (I'm still testing as I write ...

Message posted on the January 9th, 2013 - 9:50 PM ET

[PATCHSET] mempool, percpu, blkcg: fix percpu stat allocation and remove stats_lock

Hello, guys. This patchset is combination of the patchset "block, mempool, percpu: implement percpu mempool and fix blkcg percpu alloc deadlock" [1] and patches to remove blkg->stats_lock. * percpu mempool and percpu stat allocation ...

Message posted on the February 23rd, 2012 - 5:40 PM ET

[PATCH] percpu: change a method freeing a chunk for consistency.

commit 099a19d9('allow limited allocation before slab is online') changes a method allocating a chunk from kzalloc to pcpu_mem_alloc. But, it missed changing matched free operation. It may not be a problem for now, but fix it for consistency. ...

Message posted on the October 29th, 2012 - 9:10 AM ET

[PATCH 1/3] percpu: use ZERO_SIZE_PTR / ZERO_OR_NULL_PTR

Fix pcpu_alloc() to return ZERO_SIZE_PTR if requested size is 0; fix free_percpu() to check passed pointer with ZERO_OR_NULL_PTR. Signed-off-by: Dmitry Antipov <dmitry.antipov@linaro.org> mm/percpu.c | 16 +++++++++++-- 1 files changed, 11 ...

Message posted on the January 30th, 2012 - 3:40 AM ET

[PATCH] workqueue: use percpu allocator for cwq on UP

I notice that the commit bbddff makes percpu allocator can work on UP, So we don't need the magic way for UP. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Just pass build test kernel/workqueue.c | 22 +++- 1 files changed, 3 ...

Message posted on the March 9th, 2012 - 5:00 AM ET

lockdep: access percpu variable too early

Hi, The percpu variables of 'lockdep_stats' and 'cpu_lock_stat' may be accessed before percpu area is brought up in case of CONFIG_DEBUG_LOCKDEP/CONFIG_LOCK_STAT, so these variables in non-boot CPUs will be initialized incorrectly. As far as I ...

Message posted on the February 28th, 2013 - 10:50 AM ET

[PATCH] percpu: use KERN_CONT in pcpu_dump_alloc_info()

From cb129820f1e6ccf309510f4eb28df45cb0742005 Mon Sep 17 00:00:00 2001 From: Tejun Heo <tj@kernel.org> Date: Thu, 29 Mar 2012 09:45:58 -0700 pcpu_dump_alloc_info() was printing continued lines without KERN_CONT. Use it. Signed-off-by: Tejun ...

Message posted on the March 29th, 2012 - 12:50 PM ET

[GIT PULL] percpu changes for v3.8

Hello, Linus. Percpu changes for v3.8. Nothing exciting here either. Joonsoo's is almost cosmetic. Cyrill's patch fixes "percpu_alloc" early kernel param handling so that the kernel doesn't crash when the parameter is specified w/o any ...

Message posted on the December 11th, 2012 - 9:30 AM ET

[PATCH v1] percpu: use raw_local_irq_* in _this_cpu op

It doesn't make sense to trace irq off or do irq flags lock proving inside 'this_cpu' operations, so replace local_irq_* with raw_local_irq_* in 'this_cpu' op. Also the patch fixes onelockdep warning[1] by the replacement, see below: In commit: ...

Message posted on the February 15th, 2012 - 4:00 AM ET

[PATCH v1] percpu: use raw_local_irq_* in _this_cpu op

It doesn't make sense to trace irq off or do irq flags lock proving inside 'this_cpu' operations, so replace local_irq_* with raw_local_irq_* in 'this_cpu' op. Also the patch fixes onelockdep warning[1] by the replacement, see below: In commit: ...

Message posted on the February 14th, 2012 - 11:40 PM ET

[PATCHSET] blkcg: fix percpu stat allocation and remove stats_lock, take#2

Hello, guys. This patchset is another retry at fixing percpu stat allocation and removing stats_lock. From the last try[L], percpu mempool stuff is replaced with in-blkcg delayed allocation using work item. Other than that, the rest of the ...

Message posted on the March 8th, 2012 - 2:00 PM ET

[PATCH] percpu: fix __this_cpu_{sub,inc,dec}_return() definition

This patch adds missed "__" prefixes, otherwise these functions works as irq/preemption safe. Reported-by: Torsten Kaiser <just.for.lkml@googlemail.com> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> ...

Message posted on the February 28th, 2012 - 3:50 PM ET

[PATCH] percpu: fix generic definition of __this_cpu_add_and_return()

This patch adds missed "__" into function prefix. Otherwise on all archectures (except x86) it expands to irq/preemtion-safe variant: _this_cpu_generic_add_return(), which do extra irq-save/irq-restore. Optimal generic implementation is ...

Message posted on the February 19th, 2012 - 9:30 AM ET