linux-toradex.git/kernel/module.c, branch T20_LinuxImageV2.0Beta1_20121218

gcov-kernel: Add ARM eABI support

2011-12-01T05:49:57+00:00

Based on work by George G. Davis .
See http://lwn.net/Articles/390419/

Change-Id: I8df700d20a154e179f8cf6cdfe4015efc5d384f2
Signed-off-by: Juha Tukkinen 
Reviewed-on: http://git-master/r/62998
Reviewed-by: Peter De Schrijver 
Reviewed-by: Scott Williams 
Reviewed-by: Yu-Huan Hsu 

Rebase-Id: R2607a46c8bd1e521abe44a57a5ccf7317333d6c9

module: add /sys/module//uevent files

2011-07-24T12:36:04+00:00

Userspace wants to manage module parameters with udev rules.
This currently only works for loaded modules, but not for
built-in ones.

To allow access to the built-in modules we need to
re-trigger all module load events that happened before any
userspace was running. We already do the same thing for all
devices, subsystems(buses) and drivers.

This adds the currently missing /sys/module//uevent files
to all module entries.

Signed-off-by: Kay Sievers 
Signed-off-by: Rusty Russell  (split & trivial fix)

module: change attr callbacks to take struct module_kobject

2011-07-24T12:36:04+00:00

This simplifies the next patch, where we have an attribute on a
builtin module (ie. module == NULL).

Signed-off-by: Kay Sievers 
Signed-off-by: Rusty Russell  (split into 2)

modules: add default loader hook implementations

2011-07-24T12:36:04+00:00

The module loader code allows architectures to hook into the code by
providing a small number of entry points that each arch must implement.
This patch provides __weakly linked generic implementations of these
entry points for architectures that don't need to do anything special.

Signed-off-by: Jonas Bonn 
Signed-off-by: Rusty Russell

Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6

2011-05-23T19:49:28+00:00

* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (970 commits)
  staging: usbip: replace usbip_u{dbg,err,info} and printk with dev_ and pr_
  staging:iio: Trivial kconfig reorganization and uniformity improvements.
  staging:iio:documenation partial update.
  staging:iio: use pollfunc allocation helpers in remaining drivers.
  staging:iio:max1363 misc cleanups and use of for_each_bit_set to simplify event code spitting out.
  staging:iio: implement an iio_info structure to take some of the constant elements out of iio_dev.
  staging:iio:meter:ade7758: Use private data space from iio_allocate_device
  staging:iio:accel:lis3l02dq make write_reg_8 take value not a pointer to value.
  staging:iio: ring core cleanups + check if read_last available in lis3l02dq
  staging:iio:core cleanup: squash tiny wrappers and use dev_set_name to handle creation of event interface name.
  staging:iio: poll func allocation clean up.
  staging:iio:ad7780 trivial unused header cleanup.
  staging:iio:adc: AD7780: Use private data space from iio_allocate_device + trivial fixes
  staging:iio:adc:AD7780: Convert to new channel registration method
  staging:iio:adc: AD7606: Drop dev_data in favour of iio_priv()
  staging:iio:adc: AD7606: Consitently use indio_dev
  staging:iio: Rip out helper for software rings.
  staging:iio:adc:AD7298: Use private data space from iio_allocate_device
  staging:iio: rationalization of different buffer implementation hooks.
  staging:iio:imu:adis16400 avoid allocating rx, tx, and state separately from iio_dev.
  ...

Fix up trivial conflicts in
 - drivers/staging/intel_sst/intelmid.c: patches applied in both branches
 - drivers/staging/rt2860/common/cmm_data_{pci,usb}.c: removed vs spelling
 - drivers/staging/usbip/vhci_sysfs.c: trivial header file inclusion

module: Use binary search in lookup_symbol()

2011-05-19T07:25:27+00:00

The function is_exported() with its helper function lookup_symbol() are used to
verify if a provided symbol is effectively exported by the kernel or by the
modules. Now that both have their symbols sorted we can replace a linear search
with a binary search which provide a considerably speed-up.

This work was supported by a hardware donation from the CE Linux Forum.

Signed-off-by: Alessio Igor Bogani 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Rusty Russell

module: Use the binary search for symbols resolution

2011-05-19T07:25:27+00:00

Takes advantage of the order and locates symbols using binary search.

This work was supported by a hardware donation from the CE Linux Forum.

Signed-off-by: Alessio Igor Bogani 
Signed-off-by: Rusty Russell 
Tested-by: Dirk Behme

module: each_symbol_section instead of each_symbol

2011-05-19T07:25:26+00:00

Instead of having a callback function for each symbol in the kernel,
have a callback for each array of symbols.

This eases the logic when we move to sorted symbols and binary search.

Signed-off-by: Rusty Russell 
Signed-off-by: Alessio Igor Bogani

module: split unset_section_ro_nx function.

2011-05-19T07:25:26+00:00

Split the unprotect function into a function per section to make
the code more readable and add the missing static declaration.

Signed-off-by: Jan Glauber 
Signed-off-by: Rusty Russell

module: undo module RONX protection correctly.

2011-05-19T07:25:26+00:00

While debugging I stumbled over two problems in the code that protects module
pages.

First issue is that disabling the protection before freeing init or unload of
a module is not symmetric with the enablement. For instance, if pages are set
to RO the page range from module_core to module_core + core_ro_size is
protected. If a module is unloaded the page range from module_core to
module_core + core_size is set back to RW.
So pages that were not set to RO are also changed to RW.
This is not critical but IMHO it should be symmetric.

Second issue is that while set_memory_rw & set_memory_ro are used for
RO/RW changes only set_memory_nx is involved for NX/X. One would await that
the inverse function is called when the NX protection should be removed,
which is not the case here, unless I'm missing something.

Signed-off-by: Jan Glauber 
Signed-off-by: Rusty Russell