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author | Michael Witten <mfwitten@gmail.com> | 2011-04-17 04:08:48 +0000 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 14:07:03 +0200 |
commit | e809ab01013dfd905004f7e367978141c5dfc49d (patch) | |
tree | f7216401082575b7e93b82604077970135c0365e /lib/Kconfig.debug | |
parent | 2fe038e33c3921512f5450e113c263a772939f4c (diff) | |
download | linux-e809ab01013dfd905004f7e367978141c5dfc49d.tar.bz2 |
Kconfig: Copyedit: DEBUG_SECTION_MISMATCH
Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r-- | lib/Kconfig.debug | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1b11409b5f5d..d0324986a3b0 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -117,31 +117,31 @@ config DEBUG_SECTION_MISMATCH help The section mismatch analysis checks if there are illegal references from one section to another section. - Linux will during link or during runtime drop some sections - and any use of code/data previously in these sections will + During linktime or runtime, some sections are dropped; + any use of code/data previously in these sections would most likely result in an oops. - In the code functions and variables are annotated with - __init, __devinit etc. (see full list in include/linux/init.h) + In the code, functions and variables are annotated with + __init, __devinit, etc. (see the full list in include/linux/init.h), which results in the code/data being placed in specific sections. - The section mismatch analysis is always done after a full - kernel build but enabling this option will in addition - do the following: - - Add the option -fno-inline-functions-called-once to gcc - When inlining a function annotated __init in a non-init - function we would lose the section information and thus + The section mismatch analysis is always performed after a full + kernel build, and enabling this option causes the following + additional steps to occur: + - Add the option -fno-inline-functions-called-once to gcc commands. + When inlining a function annotated with __init in a non-init + function, we would lose the section information and thus the analysis would not catch the illegal reference. - This option tells gcc to inline less but will also - result in a larger kernel. - - Run the section mismatch analysis for each module/built-in.o - When we run the section mismatch analysis on vmlinux.o we + This option tells gcc to inline less (but it does result in + a larger kernel). + - Run the section mismatch analysis for each module/built-in.o file. + When we run the section mismatch analysis on vmlinux.o, we lose valueble information about where the mismatch was introduced. Running the analysis for each module/built-in.o file - will tell where the mismatch happens much closer to the - source. The drawback is that we will report the same - mismatch at least twice. - - Enable verbose reporting from modpost to help solving - the section mismatches reported. + tells where the mismatch happens much closer to the + source. The drawback is that the same mismatch is + reported at least twice. + - Enable verbose reporting from modpost in order to help resolve + the section mismatches that are reported. config DEBUG_KERNEL bool "Kernel debugging" |