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authorRandy Dunlap <rdunlap@infradead.org>2018-01-15 11:07:27 -0800
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2018-01-15 14:15:31 -0500
commit68e76e034b6b1c1ce2eece1ab8ae4008e14be470 (patch)
treed571907cdbaac852fdb24d92d7c0be3eada20d17 /kernel/trace
parenta0e3a18f4baf8e3754ac1e56f0ade924d0c0c721 (diff)
tracing: Prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
I regularly get 50 MB - 60 MB files during kernel randconfig builds. These large files mostly contain (many repeats of; e.g., 124,594): In file included from ../include/linux/string.h:6:0, from ../include/linux/uuid.h:20, from ../include/linux/mod_devicetable.h:13, from ../scripts/mod/devicetable-offsets.c:3: ../include/linux/compiler.h:64:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static [enabled by default] ______f = { \ ^ ../include/linux/compiler.h:56:23: note: in expansion of macro '__trace_if' ^ ../include/linux/string.h:425:2: note: in expansion of macro 'if' if (p_size == (size_t)-1 && q_size == (size_t)-1) ^ This only happens when CONFIG_FORTIFY_SOURCE=y and CONFIG_PROFILE_ALL_BRANCHES=y, so prevent PROFILE_ALL_BRANCHES if FORTIFY_SOURCE=y. Link: http://lkml.kernel.org/r/9199446b-a141-c0c3-9678-a3f9107f2750@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 904c952ac383..f54dc62b599c 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -355,7 +355,7 @@ config PROFILE_ANNOTATED_BRANCHES
on if you need to profile the system's use of these macros.
config PROFILE_ALL_BRANCHES
- bool "Profile all if conditionals"
+ bool "Profile all if conditionals" if !FORTIFY_SOURCE
select TRACE_BRANCH_PROFILING
help
This tracer profiles all branch conditions. Every if ()