Kernel

linux-next: Tree for June 29 (staging/spectra)
On Tue, 29 Jun 2010 15:19:38 +1000 Stephen Rothwell wrote: Hi all, Changes since 20100628: My fixes tree is now empty. When CONFIG_MTD=m and CONFIG_SPECTRA=y # CONFIG_SPECTRA_MRST_HW is not set CONFIG_SPECTRA_MTD=y # CONFIG_SPECTRA_EMU is not set build-r3554.out:(.text+0x28bc7c): undefine... 29 Jun 2010 11:51

perf: Shrink hw_perf_event
On Thu, Jun 24, 2010 at 04:28:14PM +0200, Peter Zijlstra wrote: Use hw_perf_event::period_left instead of hw_perf_event::remaning and win back 8 bytes. Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl> Acked-by: Frederic Weisbecker <fweisbec(a)gmail.com> --- include/linux/perf_event.h ... 29 Jun 2010 11:51

linux-next: Tree for June 29 (hwmon/coretemp)
On Tue, 29 Jun 2010 15:19:38 +1000 Stephen Rothwell wrote: Hi all, Changes since 20100628: My fixes tree is now empty. when CONFIG_SMP is not enabled: drivers/hwmon/coretemp.c:308: error: 'struct cpuinfo_x86' has no member named 'cpu_core_id' drivers/hwmon/coretemp.c:428: error: 'struct cpui... 29 Jun 2010 16:17

[PATCH] pass buffer sizes when using get_task_comm()
This patch redefines get_task_comm so that it takes the explicit length of the destination buffer to try and reduce the chance that it will be misused by callers (presently nothing was incorrectly calling get_task_comm with destination buffers small enough to make the existing unsafe use strncpy an actual buffer ov... 29 Jun 2010 11:51

sparc: break out some prom device-tree building code out into drivers/of
On Tue, 29 Jun 2010 00:50:08 -0700 Grant Likely <grant.likely(a)secretlab.ca> wrote: On Mon, Jun 28, 2010 at 7:00 PM, Andres Salomon <dilinger(a)queued.net> wrote: Stick code into drivers/of/pdt.c (Prom Device Tree) that other architectures with OpenFirmware resident in memory can make use of. ... 6 Jul 2010 22:14

futex: futex_find_get_task make credentials check conditional
On 06/29/2010 01:42 AM, Michal Hocko wrote: On Mon 28-06-10 18:49:08, Peter Zijlstra wrote: On Mon, 2010-06-28 at 18:39 +0200, Michal Hocko wrote: Would something like the following be acceptable (just a compile tested without comments). It simply makes caller of lookup_pi_state to decide whether ... 29 Jun 2010 14:05

perf: Default PMU ops
On Thu, Jun 24, 2010 at 04:28:13PM +0200, Peter Zijlstra wrote: Provide default implementations for the pmu txn methods, this allows us to remove some conditional code. Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl> --- kernel/perf_event.c | 48 ++++++++++++++++++++++++++++++++++++---------... 29 Jun 2010 15:11

Tracing of power:power_start events doesn't work
I use Linux performance counters to trace some performance related events. Unfortunately power:power_start events are not reported on my machine. In /drivers/acpi/processor_idle.c I found three different ways to call a C-state, but only one way (via architectural FFH based C-state and using MONITOR/MWAIT) is cu... 29 Jun 2010 11:51

[PATCH 0/4, v2] x86: enlightenment for ticket spin locks
With the pv-ops based spinlocks reportedly having measurable overhead on native execution, and with them also not easily fit (at least) fully virtualized Xen guests, this patch series introduces a replacement mechanism based on alternative instruction patching, and then uses it for fully virtualized Xen guests. Whi... 29 Jun 2010 10:45

[PATCH 1/4, v2] x86: enlightenment for ticket spin locks - base implementation
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/eliminating the bad effects ticket locks have on performance when running virtualized. Note that the lock callout passes the full ticket:c... 29 Jun 2010 10:45