Kernel

fs: scale files_lock
On Thu, 2010-06-24 at 13:02 +1000, npiggin(a)suse.de wrote: One difficulty with this approach is that a file can be removed from the list by another CPU. We must track which per-cpu list the file is on. Scalability could suffer if files are frequently removed from different cpu's list. Is this really a... 24 Jun 2010 11:50

[PATCH] ACPI, APEI, Rename CPER and GHES severity constants (resend)
The abbreviation of severity should be SEV instead of SER, so the CPER severity constants are renamed accordingly. GHES severity constants are renamed in the same way too. Signed-off-by: Huang Ying <ying.huang(a)intel.com> --- arch/x86/kernel/cpu/mcheck/mce-apei.c | 4 ++-- drivers/acpi/apei/ghes.c ... 24 Jun 2010 04:12

Bug#584846: Detects only 64MB and fails to boot on Intel Green City board if e820 hooked by GRUB2
On Mon, Jun 21, 2010 at 11:07:31PM -0700, H. Peter Anvin wrote: On 06/21/2010 10:22 PM, Josh Triplett wrote: How might I diagnose this further? What might cause Linux to refuse to use the e820 and e801 results provided by GRUB, but accept the ones provided by the BIOS? This is inte... 24 Jun 2010 04:12

[PATCH 1/2] Staging: memrar: Moved memrar_allocator struct to memrar_allocator.c
Forward declared memrar_allocator structure in memrar_allocator.h and moved the definition to memrar_allocator.c. Implemented memrar_allocator_capacity() and memrar_allocator_largest_free_area(). Signed-off-by: Henri Häkkinen <henuxd(a)gmail.com> --- drivers/staging/memrar/memrar_allocator.c | 43 ++++++++++++++... 24 Jun 2010 04:12

pid_ns: move pid_ns_release_proc() from proc_flush_task() to zap_pid_ns_processes()
Oleg Nesterov <oleg(a)redhat.com> writes: This is mostly cleanup and optimization, but also fixes the bug. Oleg with respect to your other patches I think they are some of the best ones we have on the table. proc_flush_task() checks upid->nr == 1 to detect the case when a sub-namespace exits. However, th... 24 Jun 2010 04:12

[PATCH v2] perf: close the opened directories.
When I ran "perf kvm ... top", I encountered the following error output. Error: perfcounter syscall returned with -1 (Too many open files) Fatal: No CONFIG_PERF_EVENTS=y kernel support configured? Looking into perf, I found perf opens too many direcotries at initialization time, but forgets to close them.... 24 Jun 2010 04:12

Rework gpio cansleep (was Re: gpiolib and sleeping gpios)
Hello, On Thu, Jun 24, 2010 at 07:12:50AM +1200, Ryan Mallon wrote: David Brownell wrote: --- On Tue, 6/22/10, Ryan Mallon <ryan(a)bluewatersys.com> wrote: --- On Tue, 6/22/10, Ryan Mallon <ryan(a)bluewatersys.com> wrote: 'Can sleep' for a gpio has two different meanings ... 24 Jun 2010 03:08

irq_work
On Thu, 2010-06-24 at 14:43 +0800, Huang Ying wrote: Hi, Peter, I fact I uses exactly the similar method in my patches, just trigger it with soft_irq instead of IRQ. Please take a look at nmi_return_notifier_schedule in But then why still use softirq? Once you have this its completely useless. --... 25 Jun 2010 08:47

[RFC][PATCH] irq_work
Something like this, but filled out with some arch code that does the self-ipi and calls irq_work_run() should do. No need to molest the softirq code, no need for limited vectors of any kind. Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl> --- include/linux/irq_callback.h | 13 ++++++++ kernel/ir... 24 Jun 2010 03:08

pid_ns: move pid_ns_release_proc() from proc_flush_task() to zap_pid_ns_processes()
Oleg Nesterov [oleg(a)redhat.com] wrote: | This is mostly cleanup and optimization, but also fixes the bug. | | proc_flush_task() checks upid->nr == 1 to detect the case when | a sub-namespace exits. However, this doesn't work in case when | a multithreaded init execs and calls release_task(old_leader), | the old ... 24 Jun 2010 09:36