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										 |  |  | menu "Kernel hacking" | 
					
						
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							|  |  |  | source "lib/Kconfig.debug" | 
					
						
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							|  |  |  | config GPROF | 
					
						
							|  |  |  | 	bool "Enable gprof support" | 
					
						
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										 |  |  | 	depends on DEBUG_INFO && FRAME_POINTER | 
					
						
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										 |  |  | 	help | 
					
						
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										 |  |  | 	  This allows profiling of a User-Mode Linux kernel with the gprof | 
					
						
							|  |  |  | 	  utility. | 
					
						
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										 |  |  | 	  See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more | 
					
						
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										 |  |  | 	  details. | 
					
						
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										 |  |  | 	  If you're involved in UML kernel development and want to use gprof, | 
					
						
							|  |  |  | 	  say Y.  If you're unsure, say N. | 
					
						
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							|  |  |  | config GCOV | 
					
						
							|  |  |  | 	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>
											
										 
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										 |  |  | 	depends on DEBUG_INFO | 
					
						
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										 |  |  | 	help | 
					
						
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										 |  |  | 	  This option allows developers to retrieve coverage data from a UML | 
					
						
							|  |  |  | 	  session. | 
					
						
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 | 
					
						
							| 
									
										
										
										
											2008-02-04 22:30:38 -08:00
										 |  |  | 	  See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more | 
					
						
							| 
									
										
										
										
											2007-10-16 01:26:54 -07:00
										 |  |  | 	  details. | 
					
						
							| 
									
										
										
										
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 | 
					
						
							| 
									
										
										
										
											2007-10-16 01:26:54 -07:00
										 |  |  | 	  If you're involved in UML kernel development and want to use gcov, | 
					
						
							|  |  |  | 	  say Y.  If you're unsure, say N. | 
					
						
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										 |  |  | config DEBUG_STACK_USAGE | 
					
						
							|  |  |  | 	bool "Stack utilization instrumentation" | 
					
						
							|  |  |  | 	default N | 
					
						
							|  |  |  | 	help | 
					
						
							|  |  |  | 	  Track the maximum kernel stack usage - this will look at each | 
					
						
							|  |  |  | 	  kernel stack at process exit and log it if it's the deepest | 
					
						
							|  |  |  | 	  stack seen so far. | 
					
						
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							|  |  |  | 	  This option will slow down process creation and destruction somewhat. | 
					
						
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										 |  |  | endmenu |