linux.git/lib/dynamic_debug.c, branch v3.18.104 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 2017-12-16T09:32:30+00:00 Randy Dunlap rdunlap@infradead.org 2017-11-17T23:27:35+00:00 b9a72f359befb7536667baef659dfac6d06f791f [ Upstream commit 1f3c790bd5989fcfec9e53ad8fa09f5b740c958f ] line-range is supposed to treat "1-" as "1-endoffile", so handle the special case by setting last_lineno to UINT_MAX. Fixes this error: dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1 dynamic_debug:ddebug_exec_query: query parse failed Link: http://lkml.kernel.org/r/10a6a101-e2be-209f-1f41-54637824788e@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 1f3c790bd5989fcfec9e53ad8fa09f5b740c958f ]

line-range is supposed to treat "1-" as "1-endoffile", so
handle the special case by setting last_lineno to UINT_MAX.

Fixes this error:

  dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1
  dynamic_debug:ddebug_exec_query: query parse failed

Link: http://lkml.kernel.org/r/10a6a101-e2be-209f-1f41-54637824788e@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
lib/dynamic_debug.c: use seq_open_private() instead of seq_open() 2014-10-14T00:18:14+00:00 Rob Jones rob.jones@codethink.co.uk 2014-10-13T22:51:32+00:00 4bad78c550025346de3fc5820e366c7b525e1889 Using seq_open_private() removes boilerplate code from ddebug_proc_open(). The resultant code is shorter and easier to follow. This patch does not change any functionality. Signed-off-by: Rob Jones <rob.jones@codethink.co.uk> Acked-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Using seq_open_private() removes boilerplate code from ddebug_proc_open().

The resultant code is shorter and easier to follow.

This patch does not change any functionality.

Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Acked-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dynamic_debug: change __dynamic_<foo>_dbg return types to void 2014-10-03T21:55:48+00:00 Joe Perches joe@perches.com 2014-09-24T18:17:56+00:00 906d201530f2c52aeb4eee31895c71cdccf1e9a0 The return value is not used by callers of these functions so change the functions to return void. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The return value is not used by callers of these functions
so change the functions to return void.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: print net_device reg_state in netdev_* unless it's registered 2014-07-21T03:38:43+00:00 Veaceslav Falico vfalico@gmail.com 2014-07-17T17:46:10+00:00 ccc7f4968a18b980994e622006b84e0195754390 This way we'll always know in what status the device is, unless it's running normally (i.e. NETDEV_REGISTERED). Also, emit a warning once in case of a bad reg_state. CC: "David S. Miller" <davem@davemloft.net> CC: Jason Baron <jbaron@akamai.com> CC: Eric Dumazet <edumazet@google.com> CC: Vlad Yasevich <vyasevic@redhat.com> CC: stephen hemminger <stephen@networkplumber.org> CC: Jerry Chu <hkchu@google.com> CC: Ben Hutchings <bhutchings@solarflare.com> CC: Joe Perches <joe@perches.com> Signed-off-by: Veaceslav Falico <vfalico@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
This way we'll always know in what status the device is, unless it's
running normally (i.e. NETDEV_REGISTERED).

Also, emit a warning once in case of a bad reg_state.

CC: "David S. Miller" <davem@davemloft.net>
CC: Jason Baron <jbaron@akamai.com>
CC: Eric Dumazet <edumazet@google.com>
CC: Vlad Yasevich <vyasevic@redhat.com>
CC: stephen hemminger <stephen@networkplumber.org>
CC: Jerry Chu <hkchu@google.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
CC: Joe Perches <joe@perches.com>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
dynamic_debug: replace obselete simple_strtoul() with kstrtouint() 2014-01-28T05:02:39+00:00 Andrey Ryabinin a.ryabinin@samsung.com 2014-01-28T01:06:59+00:00 4592599af36f50ed2d3502ed1b2374f5af6cb1ae Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dynamic_debug: fix ddebug_parse_query() 2014-01-28T05:02:39+00:00 Andrey Ryabinin a.ryabinin@samsung.com 2014-01-28T01:06:58+00:00 3ace678fd1b246b75e01eeac0554de35656136a4 This fixes following scenario: $ echo 'file dynamic_debug.c line 1-123 +p' > /sys/kernel/debug/dynamic_debug/control -bash: echo: write error: Invalid argument $ dmesg | grep dynamic_debug dynamic_debug:ddebug_parse_query: last-line:123 < 1st-line:1 dynamic_debug:ddebug_parse_query: query parse failed Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This fixes following scenario:

  $ echo 'file dynamic_debug.c line 1-123 +p' > /sys/kernel/debug/dynamic_debug/control
  -bash: echo: write error: Invalid argument
  $ dmesg | grep dynamic_debug
  dynamic_debug:ddebug_parse_query: last-line:123 < 1st-line:1
  dynamic_debug:ddebug_parse_query: query parse failed

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dynamic_debug: remove wrong error message 2014-01-28T05:02:39+00:00 Andrey Ryabinin a.ryabinin@samsung.com 2014-01-28T01:06:57+00:00 d9e133e6f05fbb39e2ecf7bc1edca299729a8595 parse_lineno() returns either negative error code or zero. We don't need to print something here because if parse_lineno fails it will print error message. Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
parse_lineno() returns either negative error code or zero.  We don't
need to print something here because if parse_lineno fails it will print
error message.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dynamic_debug: add wildcard support to filter files/functions/modules 2014-01-24T00:36:55+00:00 Du, Changbin changbin.du@gmail.com 2014-01-23T23:54:14+00:00 578b1e0701af34f9ef69daabda4431f1e8501109 Add wildcard '*'(matches zero or more characters) and '?' (matches one character) support when qurying debug flags. Now we can open debug messages using keywords. eg: 1. open debug logs in all usb drivers echo "file drivers/usb/* +p" > <debugfs>/dynamic_debug/control 2. open debug logs for usb xhci code echo "file *xhci* +p" > <debugfs>/dynamic_debug/control Signed-off-by: Du, Changbin <changbin.du@gmail.com> Cc: Jason Baron <jbaron@akamai.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Add wildcard '*'(matches zero or more characters) and '?' (matches one
character) support when qurying debug flags.

Now we can open debug messages using keywords. eg:
1. open debug logs in all usb drivers
    echo "file drivers/usb/* +p" > <debugfs>/dynamic_debug/control
2.  open debug logs for usb xhci code
    echo "file *xhci* +p" > <debugfs>/dynamic_debug/control

Signed-off-by: Du, Changbin <changbin.du@gmail.com>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dynamic debug: line queries failing due to uninitialized local variable 2013-08-28T19:10:53+00:00 jbaron@akamai.com jbaron@akamai.com 2013-08-27T16:50:03+00:00 bd8c154a62d47b0ec2abf87e35dccf081781d81c Settings of the form, 'line x module y +p', can fail arbitrarily due to an uninitialized local variable. With this patch results are consistent, as expected. Signed-off-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Settings of the form, 'line x module y +p', can fail arbitrarily due to an
uninitialized local variable. With this patch results are consistent, as
expected.

Signed-off-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dynamic_debug: reuse generic string_unescape function 2013-05-01T00:04:03+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2013-04-30T22:27:32+00:00 d338b1379f96b20e63aa65082e19e9a18a93b608 There is kernel function to do the job in generic way. Let's use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Jason Baron <jbaron@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
There is kernel function to do the job in generic way. Let's use it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Jason Baron <jbaron@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>