2005-04-17 00:20:36 +02:00
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menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config GPROF
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bool "Enable gprof support"
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2008-02-05 07:30:42 +01:00
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depends on DEBUG_INFO && FRAME_POINTER
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2005-04-17 00:20:36 +02:00
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help
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2007-10-16 10:26:54 +02:00
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This allows profiling of a User-Mode Linux kernel with the gprof
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utility.
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2005-04-17 00:20:36 +02:00
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2008-02-05 07:30:38 +01:00
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See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more
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2007-10-16 10:26:54 +02:00
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details.
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2005-04-17 00:20:36 +02:00
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2007-10-16 10:26:54 +02:00
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If you're involved in UML kernel development and want to use gprof,
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say Y. If you're unsure, say N.
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2005-04-17 00:20:36 +02:00
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config GCOV
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bool "Enable gcov support"
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uml: throw out CONFIG_MODE_TT
This patchset throws out tt mode, which has been non-functional for a while.
This is done in phases, interspersed with code cleanups on the affected files.
The removal is done as follows:
remove all code, config options, and files which depend on
CONFIG_MODE_TT
get rid of the CHOOSE_MODE macro, which decided whether to
call tt-mode or skas-mode code, and replace invocations with their
skas portions
replace all now-trivial procedures with their skas equivalents
There are now a bunch of now-redundant pieces of data structures, including
mode-specific pieces of the thread structure, pt_regs, and mm_context. These
are all replaced with their skas-specific contents.
As part of the ongoing style compliance project, I made a style pass over all
files that were changed. There are three such patches, one for each phase,
covering the files affected by that phase but no later ones.
I noticed that we weren't freeing the LDT state associated with a process when
it exited, so that's fixed in one of the later patches.
The last patch is a tidying patch which I've had for a while, but which caused
inexplicable crashes under tt mode. Since that is no longer a problem, this
can now go in.
This patch:
Start getting rid of tt mode support.
This patch throws out CONFIG_MODE_TT and all config options, code, and files
which depend on it.
CONFIG_MODE_SKAS is gone and everything that depends on it is included
unconditionally.
The few changed lines are in re-written Kconfig help, lines which needed
something skas-related removed from them, and a few more which weren't
strictly deletions.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 10:26:50 +02:00
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depends on DEBUG_INFO
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2005-04-17 00:20:36 +02:00
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help
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2007-10-16 10:26:54 +02:00
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This option allows developers to retrieve coverage data from a UML
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session.
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2005-04-17 00:20:36 +02:00
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2008-02-05 07:30:38 +01:00
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See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more
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2007-10-16 10:26:54 +02:00
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details.
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2005-04-17 00:20:36 +02:00
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2007-10-16 10:26:54 +02:00
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If you're involved in UML kernel development and want to use gcov,
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say Y. If you're unsure, say N.
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2005-04-17 00:20:36 +02:00
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2007-07-16 08:38:48 +02:00
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config DEBUG_STACK_USAGE
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bool "Stack utilization instrumentation"
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default N
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help
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Track the maximum kernel stack usage - this will look at each
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kernel stack at process exit and log it if it's the deepest
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stack seen so far.
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This option will slow down process creation and destruction somewhat.
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2005-04-17 00:20:36 +02:00
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endmenu
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