From: Vladimir Shebordaev <vshebordaev@mail.ru> This patch fixes a nasty typo in usbtouchscreen driver. The typo is inherited from the original mtouchusb. It used to make the input subsytem to incorrectly report the physical device ids to userspace that in turn is much confusing for, e.g. XInput hotplug facilities in setups with multiple identical touchscreens. Signed-off-by: Vladimir Shebordaev <vladimir.shebordaev@gmail.com> --- drivers/input/touchscreen/usbtouchscreen.c | 2...

This patch fixes a nasty typo in usbtouchscreen driver. The typo is inherited from the original mtouchusb. It used to make the input subsytem to incorrectly report the physical device ids to userspace that in turn is much confusing for, e.g. XInput hotplug facilities in setups with multiple identical touchscreens. Signed-off-by: Vladimir Shebordaev <vshebordaev@mail.ru> --- drivers/input/touchscreen/usbtouchscreen.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --gi...

This patch fixes a nasty typo in usbtouchscreen driver. The typo is inherited from the original mtouchusb. It used to make the input subsytem to incorrectly report the physical device ids to userspace that in turn is much confusing for, e.g. XInput hotplug facilities in setups with multiple identical touchscreens. Signed-off-by: Vladimir Shebordaev <vshebordaev@mail.ru> --- drivers/input/touchscreen/usbtouchscreen.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --gi...

This patchset converts sw_lock and scheduler_lock in the ELAN U132 Host Controller Driver from semaphores to the mutex API -- Matthias Kaehlcke Linux Application Developer Barcelona La libertad es como la mañana. Hay quienes esperan dormidos a que llegue, pero hay quienes desvelan y caminan la noche para alcanzarla (Subcomandante Marcos) .''`. using free software / Debian GNU/Linux | [ message continues ]

The ELAN U132 Host Controller Driver uses the semaphore sw_lock as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> -- diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index b88eb3c..1201ca4 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -184,7 +184,7 @@ struct u132_ring { struct u132 { struct kref kref; struct list_head u132_list; - ...

For non-developers size and speed of the kernel matter much more than compile time. When you go towards embedded systems with limited resources a 1% size decrease would often be worth it even if it would (hypothetically) They did everything right. You should better try to understand the problem first before behaving as if you knew everything better than everyone else... cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. Ther...

Your claim was that link time was more important than code size, and First of all, please lookup the word "hypothetically" in a dictionary. And code review and Denys' patch have cumulative effects since his patch results in improvements that can't be resonably done other than at If you don't understand what the patches in this thread are about then you shouldn't have started commenting on this thread... cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly o...

The patches in this thread are not in any way related to any problems with kconfig... cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed -

Hi Andrew, Some people asdked me for a tarball easy to apply of my patches. I give a link to it for those interested. http://ltt.polymtl.ca/markers/markers-patches-for-2.6.23-rc4-mm1-06-09-2007.tar.bz2 Mathieu It comes along with this series file: kprobes-use-mutex-for-insn-pages.patch kprobes-dont-use-kprobes-mutex-in-arch-code.patch kprobes-declare-kprobes-mutex-static.patch text-edit-lock-architecture-independent-code.patch text-edit-lock-alternative-i386-and-x86_64.patch text-edit...

Here is the first stage of a port of blktrace to the Linux Kernel Markers. The advantage of this port is that it minimizes the impact on the running when blktrace is not active. A few remarks : this patch has the positive effect of removing some code from the block io tracing hot paths, minimizing the i-cache impact in a system where the io tracing is compiled in but inactive. It also moves the blk tracing code from a header (and therefore from the body of the instrumented functions) to a separat...

Here is some documentation explaining what is/how to use the Linux Kernel Markers. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: "Frank Ch. Eigler" <fche@redhat.com> --- Documentation/marker.txt | 257 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) Index: linux-2.6-lttng/Documentation/marker.txt ===============================================================...

With the increasing complexity of today's user-space application and the wide deployment of SMP systems, the users need an increasing understanding of the behavior and performance of a system across multiple processes/different execution contexts/multiple CPUs. In applications such as large clusters (Google, IBM), video acquisition (Autodesk), embedded real-time systems (Wind River, Monta Vista, Sony) or sysadmin/programmer-type tasks (SystemTAP from Redhat), a tool that permits tracing of kernel-use...

The marker activation functions sits in kernel/marker.c. A hash table is used to keep track of the registered probes and armed markers, so the markers within a newly loaded module that should be active can be activated at module load time. marker_query has been removed. marker_get_first, marker_get_next and marker_release should be used as iterators on the markers. Changelog: - markers_mutex now nests inside module_mutex rather than the opposite. Signed-off-by: Mathieu Desnoyers <mathieu.de...

Yeah. We will start introducing Reviewed-by: (I haven't yet quite worked out how yet) but it will be a quite formal thing and it would be something which the reviewer explicitly provided. For now, let's please stick with acked-by (if those individuals did indeed send an acked-by) -

Hi Andrew, Here are the Linux Kernel Markers for 2.6.23-rc4-mm1. They depend on the sorted module list and on the immediate values. Mathieu -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -

Add support for sorted list in seq_file. It aims at changing the way /proc/modules and kallsyms iterates on the module list to remove a race between module unload and module/symbol listing. The list is sorted by ascending list_head pointer address. Changelog: When reading the data by small chunks (i.e. byte by byte), the index (ppos) is incremented by seq_read() directly and no "next" callback is called when going to the next module. Therefore, use ppos instead of m->private to deal with ...

Scheduler Profiling - Use Immediate Values Use immediate values with lower d-cache hit in optimized version as a condition for scheduler profiling call. Depends on the Immediate values patches, applies to 2.6.23-rc4-mm1. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> --- drivers/kvm/svm.c | 2 +- drivers/kvm/vmx.c | 2 +- include/linux/profile.h | 10 ++++------ kernel/profile.c | 38 ++++++++++++++++++++++++++------------ kernel/sched.c ...

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> --- Documentation/immediate.txt | 232 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 232 insertions(+) Index: linux-2.6-lttng/Documentation/immediate.txt =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6-lttng/Documentation/immediate.txt 2007-08-20 15:55:26.000000000 -0400 @@ -0,0 +1,232 @@ + Using the Immediate Values +...

Fix a bad call to flush_icache_range(). The second parameter is the end address of the range, not the length. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Christoph Hellwig <hch@infradead.org> --- arch/powerpc/kernel/immediate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: linux-2.6-lttng/arch/powerpc/kernel/immediate.c =================================================================== --- linux-2.6-lttng.orig/arch/powerpc/kernel/immed...

i386 optimization of the immediate values which uses a movl with code patching to set/unset the value used to populate the register used as variable source. Changelog: - Use text_poke_early with cr0 WP save/restore to patch the bypass. We are doing non atomic writes to a code region only touched by us (nobody can execute it since we are protected by the immediate_mutex). Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Reviewed-by: Andi Kleen <ak@muc.de> Reviewed-b...

Immediate values provide a way to use dynamic code patching to update variables sitting within the instruction stream. It saves caches lines normally used by static read mostly variables. Enable it by default, but let users disable it through the EMBEDDED menu with the "Disable immediate values" submenu entry. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Adrian Bunk <bunk@stusta.de> CC: Andi Kleen <andi@firstfloor.org> CC: Alexey Dobriyan <adobriyan@gmail...

Remove "static" from module_mutex and the modules list so it can be used by other builtin objects in the kernel. Otherwise, every code depending on the module list would have to be put in kernel/module.c. Since the immediate values depends on the module list but can be considered as logically different, it makes sense to implement them in their own file. The alternative to this would be to disable preemption in code path that need such synchronization, so they can be protected against module unload ...

[PATCH] Fix config requirements of IPv6 net/ipv6/inet6_connection_sock.c in function __inet6_csk_dst_store() requires flow_cache_genid which is defined in net/core/flow.c which is compiled when CONFIG_XFRM is set. This patch expresses that dependency. Signed-off-by: Bernhard Walle <bernhard@bwalle.de> --- net/ipv6/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/net/ipv6/Kconfig +++ b/net/ipv6/Kconfig @@ -5,6 +5,7 @@ # IPv6 as module will cause a CRASH if you try to u...

Standardize DEBUG_RODATA, removing special cases for hotplug and kprobes. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Andi Kleen <andi@firstfloor.org> CC: pageexec@freemail.hu --- arch/x86_64/mm/init.c | 23 +++++------------------ include/asm-x86_64/cacheflush.h | 22 ++++++++++++++++++++++ 2 files changed, 27 insertions(+), 18 deletions(-) Index: linux-2.6-lttng/arch/x86_64/mm/init.c ===========================================================...

Make kprobes use text_set instead of text_poke. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Andi Kleen <andi@firstfloor.org> CC: prasanna@in.ibm.com CC: ananth@in.ibm.com CC: anil.s.keshavamurthy@intel.com CC: davem@davemloft.net --- arch/x86_64/kernel/kprobes.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: linux-2.6-lttng/arch/x86_64/kernel/kprobes.c =================================================================== --- linux-2.6-l...