linux.git/kernel/printk, branch v3.14-rc2

printk: flush conflicting continuation line

2014-01-24T00:36:56+00:00

An earlier newline was missing and current print is from different task.
In this scenario flush the continuation line and store this line
seperatly.

This patch fix the below scenario of timestamp interleaving,
   [   28.154370 ] read_word_reg : reg[0x 3], reg[0x 4]  data [0x 642]
   [   28.155428 ] uart disconnect
   [   31.947341 ] dvfs[cpufreq.c<275>]:plug-in cpu<1> done
   [   28.155445 ] UART detached : send switch state 201
   [   32.014112 ] read_reg : reg[0x 3] data[0x21]

[akpm@linux-foundation.org: simplify and condense the code]
Signed-off-by: Arun KS 
Signed-off-by: Arun KS 
Cc: Joe Perches 
Cc: Tejun Heo 
Cc: Frederic Weisbecker 
Cc: Paul Gortmaker 
Cc: Kay Sievers 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kernel/printk/printk.c: use memblock apis for early memory allocations

2014-01-22T00:19:47+00:00

Switch to memblock interfaces for early memory allocator instead of
bootmem allocator.  No functional change in beahvior than what it is in
current code from bootmem users points of view.

Archs already converted to NO_BOOTMEM now directly use memblock
interfaces instead of bootmem wrappers build on top of memblock.  And
the archs which still uses bootmem, these new apis just fallback to
exiting bootmem APIs.

Signed-off-by: Grygorii Strashko 
Signed-off-by: Santosh Shilimkar 
Cc: Yinghai Lu 
Cc: Tejun Heo 
Cc: "Rafael J. Wysocki" 
Cc: Arnd Bergmann 
Cc: Christoph Lameter 
Cc: Greg Kroah-Hartman 
Cc: H. Peter Anvin 
Cc: Johannes Weiner 
Cc: KAMEZAWA Hiroyuki 
Cc: Konrad Rzeszutek Wilk 
Cc: Michal Hocko 
Cc: Paul Walmsley 
Cc: Pavel Machek 
Cc: Russell King 
Cc: Tony Lindgren 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

printk.c: comments should refer to /proc/vmcore instead of /proc/vmcoreinfo

2013-11-13T03:09:14+00:00

In one of those comments a typo was fixed, too.

Signed-off-by: Dirk Gouders 
Cc: Joe Perches 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kernel/printk/printk.c: enable boot delay for earlyprintk

2013-11-13T03:09:14+00:00

boot_delay does not work for earlyprintk because the kernel cmdline
parsing is late.

Change to use early_param so early kernel messages can also be delayed.

Signed-off-by: Dave Young 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kernel/printk/printk.c: convert to pr_foo()

2013-11-13T03:09:14+00:00

It was half-and-half.

Cc: Frederic Weisbecker 
Cc: Greg Kroah-Hartman 
Cc: Joe Perches 
Cc: Kees Cook 
Cc: Tejun Heo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

printk: report console names during cut-over

2013-11-13T03:09:13+00:00

This reports the names of consoles as they're being disabled to help
identify which is which during cut-over.  Helps answer the question
"which boot console actually got activated?" once the regular console is
running, mostly when debugging boot console failures.

Signed-off-by: Kees Cook 
Acked-by: Frederic Weisbecker 
Cc: Joe Perches 
Cc: Tejun Heo 
Cc: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2013-09-03T18:38:36+00:00

Pull tty/serial driver patches from Greg KH:
 "Here's the big tty/serial driver pull request for 3.12-rc1.

  Lots of n_tty reworks to resolve some very long-standing issues,
  removing the 3-4 different locks that were taken for every character.
  This code has been beaten on for a long time in linux-next with no
  reported regressions.

  Other than that, a range of serial and tty driver updates and
  revisions.  Full details in the shortlog"

* tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (226 commits)
  hvc_xen: Remove unnecessary __GFP_ZERO from kzalloc
  serial: imx: initialize the local variable
  tty: ar933x_uart: add device tree support and binding documentation
  tty: ar933x_uart: allow to build the driver as a module
  ARM: dts: msm: Update uartdm compatible strings
  devicetree: serial: Document msm_serial bindings
  serial: unify serial bindings into a single dir
  serial: fsl-imx-uart: Cleanup duplicate device tree binding
  tty: ar933x_uart: use config_enabled() macro to clean up ifdefs
  tty: ar933x_uart: remove superfluous assignment of ar933x_uart_driver.nr
  tty: ar933x_uart: use the clk API to get the uart clock
  tty: serial: cpm_uart: Adding proper request of GPIO used by cpm_uart driver
  serial: sirf: fix the amount of serial ports
  serial: sirf: define macro for some magic numbers of USP
  serial: icom: move array overflow checks earlier
  TTY: amiserial, remove unnecessary platform_set_drvdata()
  serial: st-asc: remove unnecessary platform_set_drvdata()
  msm_serial: Send more than 1 character on the console w/ UARTDM
  msm_serial: Add support for non-GSBI UARTDM devices
  msm_serial: Switch clock consumer strings and simplify code
  ...

printk: Fix return of braille_register_console()

2013-08-06T20:18:12+00:00

Some of my configs I test with have CONFIG_A11Y_BRAILLE_CONSOLE set.
When I started testing against v3.11-rc4 my console went bonkers.  Using
ktest to bisect the issue, it came down to:

commit bbeddf52a "printk: move braille console support into separate
braille.[ch] files"

Looking into the patch I found the problem.  It's with the return of
braille_register_console().  As anything other than NULL is considered a
failure.

But for those of us that have CONFIG_A11Y_BRAILLE_CONSOLE set but do not
define a "brl" or "brl=" on the command line, we still may want a
console that those with sight can still use.

Return NULL (success) if "brl" or "brl=" is not on the console line.

Signed-off-by: Steven Rostedt 
Acked-by: Joe Perches 
Cc: Andrew Morton 
Signed-off-by: Linus Torvalds

register_console: prevent adding the same console twice

2013-08-05T07:06:46+00:00

This patch guards the console_drivers list to be corrupted. The
for_each_console() macro insist on a strictly forward list ended by NULL:

 con0->next->con1->next->NULL

Without this patch it may happen easily to destroy this list for example by
adding 'earlyprintk' twice, especially on embedded devices where the early
console is often a single static instance.  This will result in the following
list:

 con0->next->con0

This in turn will result in an endless loop in console_unlock() later on by
printing the first __log_buf line endlessly.

Signed-off-by: Andreas Bießmann 
Cc: Kay Sievers 
Cc: Ben Hutchings 
Signed-off-by: Greg Kroah-Hartman

printk: rename struct log to struct printk_log

2013-07-31T21:41:03+00:00

Rename the struct to enable moving portions of
printk.c to separate files.

The rename changes output of /proc/vmcoreinfo.

Signed-off-by: Joe Perches 
Cc: Samuel Thibault 
Cc: Ming Lei 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds