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| author | Andrew Boie <andrew.p.boie@intel.com> | 2016-06-14 10:55:57 -0700 |
|---|---|---|
| committer | Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> | 2016-06-16 18:15:59 +0000 |
| commit | 63cea248960d4551d5d88edc58963a8d9186cda5 (patch) | |
| tree | 6eb149fa38c404b8b933e7317e386634f9bdd52c /misc | |
| parent | c66ed19dea13286573ba683715cf0cbc57a84a74 (diff) | |
misc: add config to omit frame pointer
Change-Id: Ia69c14addded7563a24f15d4a3408fcc2c8e673a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/misc/Kconfig b/misc/Kconfig index aa38f77f7..0aa789849 100644 --- a/misc/Kconfig +++ b/misc/Kconfig @@ -229,6 +229,20 @@ config DEBUG_TRACING_KERNEL_OBJECTS This option enable the feature for tracing kernel objects. This option is for debug purposes and increase the memory footprint of the kernel. +config OMIT_FRAME_POINTER + bool + prompt "Omit frame pointer" + default n + help + Prevent the compiler from putting the stack frame pointer into a + register. Saves a few instructions in function prologues/epilogues and + frees up a register for general-purpose use, which can provide good + performance improvements on register-constrained architectures like + x86. Omitting frame pointers impedes debugging as local variables are + harder to locate and it is much more difficult to produce a stack + trace. Recommended only for production builds which do not need to be + debugged. + source "misc/debug/Kconfig" endmenu |