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This fixes an issue with the build system caused by a change that 

modifies CC_FLAGS_FTRACE. The issue is that it breaks the dependencies
 and causes "make targz-pkg" to rebuild the entire world.
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Merge tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "This fixes an issue with the build system caused by a change that
  modifies CC_FLAGS_FTRACE. The issue is that it breaks the dependencies
  and causes "make targz-pkg" to rebuild the entire world"

* tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/Makefile: Fix handling redefinition of CC_FLAGS_FTRACE
This commit is contained in:
Linus Torvalds 2018-09-14 17:31:02 -10:00
parent 090b75bcba b1f4ff74fc
commit 5b945fd2c3
1 changed files with 5 additions and 3 deletions
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8
Makefile
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@ -616,6 +616,11 @@ CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
$(call cc-disable-warning,maybe-uninitialized,) $(call cc-disable-warning,maybe-uninitialized,)
export CFLAGS_GCOV export CFLAGS_GCOV
# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later.
ifdef CONFIG_FUNCTION_TRACER
CC_FLAGS_FTRACE := -pg
endif
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables # values of the respective KBUILD_* variables
ARCH_CPPFLAGS := ARCH_CPPFLAGS :=
@ -755,9 +760,6 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
endif endif
ifdef CONFIG_FUNCTION_TRACER ifdef CONFIG_FUNCTION_TRACER
ifndef CC_FLAGS_FTRACE
CC_FLAGS_FTRACE := -pg
endif
ifdef CONFIG_FTRACE_MCOUNT_RECORD ifdef CONFIG_FTRACE_MCOUNT_RECORD
# gcc 5 supports generating the mcount tables directly # gcc 5 supports generating the mcount tables directly
ifeq ($(call cc-option-yn,-mrecord-mcount),y) ifeq ($(call cc-option-yn,-mrecord-mcount),y)