linux-stable.git/drivers/char/ramoops.c, branch master

ramoops: Move to fs/pstore/ram.c

2012-05-16T15:06:37+00:00

Since ramoops was converted to pstore, it has nothing to do with character
devices nowadays. Instead, today it is just a RAM backend for pstore.

The patch just moves things around. There are a few changes were needed
because of the move:

1. Kconfig and Makefiles fixups, of course.

2. In pstore/ram.c we have to play a bit with MODULE_PARAM_PREFIX, this
   is needed to keep user experience the same as with ramoops driver
   (i.e. so that ramoops.foo kernel command line arguments would still
   work).

Signed-off-by: Anton Vorontsov 
Acked-by: Marco Stornelli 
Acked-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

ramoops: fix printk format warnings

2012-05-16T15:06:34+00:00

Fix printk format warnings for phys_addr_t type variables:

drivers/char/ramoops.c:246:3: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'phys_addr_t'
drivers/char/ramoops.c:273:2: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'phys_addr_t'

Signed-off-by: Randy Dunlap 
Cc: Kees Cook 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

ramoops: use pstore interface

2012-05-16T15:06:33+00:00

Instead of using /dev/mem directly and forcing userspace to know (or
extract) where the platform has defined persistent memory, how many slots
it has, the sizes, etc, use the common pstore infrastructure to handle
Oops gathering and extraction.  This presents a much easier to use
filesystem-based view to the memory region.  This also means that any
other tools that are written to understand pstore will automatically be
able to process ramoops too.

Signed-off-by: Kees Cook 
Cc: Tony Luck 
Cc: Marco Stornelli 
Cc: Arnd Bergmann 
Cc: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

char/ramoops: included linux/err.h twice

2012-02-24T22:16:43+00:00

drivers/char/ramoops.c included 'linux/err.h' twice, remove
the duplicate.

Signed-off-by: Danny Kukawka 
Signed-off-by: Greg Kroah-Hartman

ramoops: update parameters only after successful init

2012-01-13T04:13:13+00:00

If a platform device exists on the system, but ramoops fails to attach to
it, the module parameters are overridden before ramoops can fall back and
try to use passed module parameters.  Move update to end of init routine.

Signed-off-by: Kees Cook 
Cc: Marco Stornelli 
Cc: Sergiu Iordache 
Cc: Seiji Aguchi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ramoops: fix use of rounddown_pow_of_two()

2012-01-13T04:13:13+00:00

The return value of rounddown_pow_of_two wasn't evaluated, so the
operation was a no-op.

Signed-off-by: Marco Stornelli 
Reported-by: Andrew Morton 
Reviewed-by: WANG Cong 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kexec: remove KMSG_DUMP_KEXEC

2012-01-13T04:13:11+00:00

KMSG_DUMP_KEXEC is useless because we already save kernel messages inside
/proc/vmcore, and it is unsafe to allow modules to do other stuffs in a
crash dump scenario.

[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: WANG Cong 
Reported-by: Vivek Goyal 
Acked-by: Vivek Goyal 
Acked-by: Jarod Wilson 
Cc: "Eric W. Biederman" 
Cc: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/char: Fix implicit use of err.h in ramoops.c

2011-10-31T23:31:42+00:00

drivers/char/ramoops.c: In function 'ramoops_init':
drivers/char/ramoops.c:221: error: implicit declaration of function 'IS_ERR'
drivers/char/ramoops.c:222: error: implicit declaration of function 'PTR_ERR'
make[3]: *** [drivers/char/ramoops.o] Error 1

Signed-off-by: Paul Gortmaker

ramoops: update module parameters

2011-08-04T00:25:21+00:00

Update the module parameters when platform data is used.  This means
that they can be read from /sys/module/ramoops/parameters in order to
parse the memory area.

Signed-off-by: Sergiu Iordache 
Cc: Marco Stornelli 
Cc: Seiji Aguchi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ramoops: fix compile failure on parisc

2011-07-30T06:41:09+00:00

Fixes this:

  drivers/char/ramoops.c: In function 'ramoops_init':
  drivers/char/ramoops.c:221: error: implicit declaration of function 'IS_ERR'
  drivers/char/ramoops.c:222: error: implicit declaration of function 'PTR_ERR'

If it actually builds on other platforms, it's probably getting
linux/err.h via some other #include.

Signed-off-by: James Bottomley 
Signed-off-by: Linus Torvalds