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  1. Oct 05, 2012
  3. Sep 25, 2012
  5. Sep 23, 2012
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  13. Sep 08, 2012
  15. Aug 30, 2012
  17. Aug 21, 2012
  19. Jul 31, 2012
  21. Jul 30, 2012
  23. Jul 23, 2012
    • David Daney's avatar
      of/lib: Allow scripts/dtc/libfdt to be used from kernel code · ab253839
      David Daney authored 
      

libfdt is part of the device tree support in scripts/dtc/libfdt.  For
some platforms that use the Device Tree, we want to be able to edit
the flattened device tree form.

We don't want to burden kernel builds that do not require it, so we
gate compilation of libfdt files with CONFIG_LIBFDT.  So if it is
needed, you need to do this in your Kconfig:

	select LIBFDT

And in the Makefile of the code using libfdt something like:

ccflags-y := -I$(src)/../../../scripts/dtc/libfdt

Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kernel@vger.kernel.org
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      ab253839
  25. Jul 19, 2012
    • Tony Luck's avatar
      debug: Do not permit CONFIG_DEBUG_STACK_USAGE=y on IA64 or PARISC · e9c31b32
      Tony Luck authored 
      

The stack_not_used() function in <linux/sched.h> assumes that stacks
grow downwards. This is not true on IA64 or PARISC, so this function
would walk off in the wrong direction and into the weeds.

Found on IA64 because of a compilation failure with recursive dependencies
on IA64_TASKSIZE and IA64_THREAD_INFO_SIZE.

Fixing the code is possible, but should be combined with other
infrastructure additions to set up the "canary" at the end of the stack.

Reported-by: Fengguang Wu <fengguang.wu@intel.com> (failed allmodconfig build)
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      e9c31b32
  27. Jul 06, 2012
  29. Jul 02, 2012
  31. Jun 29, 2012
    • Pablo Neira Ayuso's avatar
      netlink: add netlink_kernel_cfg parameter to netlink_kernel_create · a31f2d17
      Pablo Neira Ayuso authored 
      

This patch adds the following structure:

struct netlink_kernel_cfg {
        unsigned int    groups;
        void            (*input)(struct sk_buff *skb);
        struct mutex    *cb_mutex;
};

That can be passed to netlink_kernel_create to set optional configurations
for netlink kernel sockets.

I've populated this structure by looking for NULL and zero parameters at the
existing code. The remaining parameters that always need to be set are still
left in the original interface.

That includes optional parameters for the netlink socket creation. This allows
easy extensibility of this interface in the future.

This patch also adapts all callers to use this new interface.

Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a31f2d17
  33. Jun 28, 2012
  35. Jun 20, 2012
  37. Jun 08, 2012
    • Jan Kara's avatar
      lib: Fix possible deadlock in flexible proportion code · e78d4833
      Jan Kara authored 
      

When percpu counter function in fprop_new_period() is interrupted by an
interrupt while holding counter lock, it can cause deadlock when the
interrupt wants to take the lock as well. Fix the problem by disabling
interrupts when calling percpu counter functions.

Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarFengguang Wu <fengguang.wu@intel.com>
      e78d4833
    • Jan Kara's avatar
      lib: Proportions with flexible period · f3109a51
      Jan Kara authored 
      

Implement code computing proportions of events of different type (like code in
lib/proportions.c) but allowing periods to have different lengths. This allows
us to have aging periods of fixed wallclock time which gives better proportion
estimates given the hugely varying throughput of different devices - previous
measuring of aging period by number of events has the problem that a reasonable
period length for a system with low-end USB stick is not a reasonable period
length for a system with high-end storage array resulting either in too slow
proportion updates or too fluctuating proportion updates.

Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarFengguang Wu <fengguang.wu@intel.com>
      f3109a51
  39. Jun 07, 2012