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  1. 28 8月, 2006 2 次提交
  3. 27 8月, 2006 1 次提交
  5. 23 8月, 2006 1 次提交
  7. 18 8月, 2006 2 次提交
  9. 15 8月, 2006 1 次提交
  11. 12 8月, 2006 1 次提交
  13. 06 8月, 2006 1 次提交
  15. 04 8月, 2006 1 次提交
  17. 03 8月, 2006 2 次提交
  19. 01 8月, 2006 10 次提交
    • M
      [CPUFREQ] return error when failing to set minfreq · 9c9a43ed
      由 Mattia Dongili 提交于 
      I just stumbled on this bug/feature, this is how to reproduce it:

# echo 450000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
# echo 450000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
# echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
# cpufreq-info -p
450000 450000 powersave
# echo 1800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq ; echo $?
0
# cpufreq-info -p
450000 450000 powersave

Here it is. The kernel refuses to set a min_freq higher than the
max_freq but it allows a max_freq lower than min_freq (lowering min_freq
also).

This behaviour is pretty straightforward (but undocumented) and it
doesn't return an error altough failing to accomplish the requested
action (set min_freq).
The problem (IMO) is basically that userspace is not allowed to set a
full policy atomically while the kernel always does that thus it must
enforce an ordering on operations.

The attached patch returns -EINVAL if trying to increase frequencies
starting from scaling_min_freq and documents the correct ordering of writes.
Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: Dominik Brodowski <linux at dominikbrodowski.net>
Signed-off-by: NDave Jones <davej@redhat.com>

--
      9c9a43ed
    • T
      [PATCH] documentation: Documentation/initrd.txt · 0a5eca65
      由 Thomas Horsley 提交于 
      I spent a long time the other day trying to examine an initrd image on a
fedora core 5 system because the initrd.txt file is apparently obsolete.
Here is a patch which I hope will reduce future confusion for others.
Signed-off-by: NThomas Horsley <tom.horsley@ccur.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      0a5eca65
    • R
      [PATCH] vDSO hash-style fix · 0b0bf7a3
      由 Roland McGrath 提交于 
      The latest toolchains can produce a new ELF section in DSOs and
dynamically-linked executables.  The new section ".gnu.hash" replaces
".hash", and allows for more efficient runtime symbol lookups by the
dynamic linker.  The new ld option --hash-style={sysv|gnu|both} controls
whether to produce the old ".hash", the new ".gnu.hash", or both.  In some
new systems such as Fedora Core 6, gcc by default passes --hash-style=gnu
to the linker, so that a standard invocation of "gcc -shared" results in
producing a DSO with only ".gnu.hash".  The new ".gnu.hash" sections need
to be dealt with the same way as ".hash" sections in all respects; only the
dynamic linker cares about their contents.  To work with older dynamic
linkers (i.e.  preexisting releases of glibc), a binary must have the old
".hash" section.  The --hash-style=both option produces binaries that a new
dynamic linker can use more efficiently, but an old dynamic linker can
still handle.

The new section runs afoul of the custom linker scripts used to build vDSO
images for the kernel.  On ia64, the failure mode for this is a boot-time
panic because the vDSO's PT_IA_64_UNWIND segment winds up ill-formed.

This patch addresses the problem in two ways.

First, it mentions ".gnu.hash" in all the linker scripts alongside ".hash".
 This produces correct vDSO images with --hash-style=sysv (or old tools),
with --hash-style=gnu, or with --hash-style=both.

Second, it passes the --hash-style=sysv option when building the vDSO
images, so that ".gnu.hash" is not actually produced.  This is the most
conservative choice for compatibility with any old userland.  There is some
concern that some ancient glibc builds (though not any known old production
system) might choke on --hash-style=both binaries.  The optimizations
provided by the new style of hash section do not really matter for a DSO
with a tiny number of symbols, as the vDSO has.  If someone wants to use
=gnu or =both for their vDSO builds and worry less about that
compatibility, just change the option and the linker script changes will
make any choice work fine.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      0b0bf7a3
    • P
      [PATCH] Typo in ub clause of devices.txt · 953a7f20
      由 Pete Zaitcev 提交于 
      Change "Thrid" into "Third", and realign similarly to other entries.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Cc: <device@lanana.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      953a7f20
    • R
      [PATCH] Doc/SubmittingPatches cleanups · bc7455fa
      由 Randy Dunlap 提交于 
      A few cleanups to SubmittingPatches:
- mention SubmitChecklist
- remove mention of my simple patch script tools
- remove last-updated line
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      bc7455fa
    • R
      [PATCH] Add DocBook documentation for workqueue functions · 0fcb78c2
      由 Rolf Eike Beer 提交于 
      kernel/workqueue.c was omitted from generating kernel documentation.  This
adds a new section "Workqueues and Kevents" and adds documentation for some
of the functions.

Some functions in this file already had DocBook-style comments, now they
finally become visible.
Signed-off-by: NRolf Eike Beer <eike-kernel@sf-tec.de>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      0fcb78c2
    • R
      [PATCH] pci/search: cleanups, add to kernel-api.tmpl · d75763d2
      由 Randy Dunlap 提交于 
      Clean up kernel-doc comments in drivers/pci/search.c (line sizes and typos).

Enable that source file in DocBook/kernel-api.tmpl.
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      d75763d2
    • R
      [PATCH] fix kernel-api doc for kernel/resource.c · 2b54960b
      由 Randy Dunlap 提交于 
      insert_resource() was unexported, so kernel-doc needs to be told to search
kernel/resource.c for internal functions instead of exported functions so that
it won't report an error.
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      2b54960b
    • C
      [PATCH] cpu hotplug: fix hotplug cpu documentation for proper usage · 7c7165c9
      由 Chandra Seetharaman 提交于 
      Update hotplug cpu documentation to clearly state when to use
register_cpu_notifier() and register_hotcpu_notifier.
Signed-off-by: NChandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      7c7165c9
    • S
      [PATCH] delay accounting: temporarily enable by default · 163ecdff
      由 Shailabh Nagar 提交于 
      Enable delay accounting by default so that feature gets coverage testing
without requiring special measures.

Earlier, it was off by default and had to be enabled via a boot time param.
 This patch reverses the default behaviour to improve coverage testing.  It
can be removed late in the kernel development cycle if its believed users
shouldn't have to incur any cost if they don't want delay accounting.  Or
it can be retained forever if the utility of the stats is deemed common
enough to warrant keeping the feature on.
Signed-off-by: NShailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      163ecdff
  21. 29 7月, 2006 4 次提交
  23. 25 7月, 2006 1 次提交
  25. 15 7月, 2006 8 次提交
  27. 14 7月, 2006 1 次提交
  29. 13 7月, 2006 4 次提交