diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 28 |
1 files changed, 26 insertions, 2 deletions
@@ -1,8 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 VERSION = 6 -PATCHLEVEL = 18 +PATCHLEVEL = 19 SUBLEVEL = 0 -EXTRAVERSION = +EXTRAVERSION = -rc4 NAME = Baby Opossum Posse # *DOCUMENTATION* @@ -810,6 +810,25 @@ ifdef CONFIG_FUNCTION_TRACER CC_FLAGS_FTRACE := -pg endif +ifdef CONFIG_TRACEPOINTS +# To check for unused tracepoints (tracepoints that are defined but never +# called), run with: +# +# make UT=1 +# +# Each unused tracepoints can take up to 5KB of memory in the running kernel. +# It is best to remove any that are not used. +# +# This command line option will be removed when all current unused +# tracepoints are removed. + +ifeq ("$(origin UT)", "command line") + WARN_ON_UNUSED_TRACEPOINTS := $(UT) +endif +endif # CONFIG_TRACEPOINTS + +export WARN_ON_UNUSED_TRACEPOINTS + include $(srctree)/arch/$(SRCARCH)/Makefile ifdef need-config @@ -940,6 +959,9 @@ KBUILD_CFLAGS += $(call cc-option,-fzero-init-padding-bits=all) # for the randomize_kstack_offset feature. Disable it for all compilers. KBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection) +# Get details on warnings generated due to GCC value tracking. +KBUILD_CFLAGS += $(call cc-option, -fdiagnostics-show-context=2) + # Clear used registers at func exit (to reduce data lifetime and ROP gadgets). ifdef CONFIG_ZERO_CALL_USED_REGS KBUILD_CFLAGS += -fzero-call-used-regs=used-gpr @@ -1784,6 +1806,8 @@ help: @echo ' c: extra checks in the configuration stage (Kconfig)' @echo ' e: warnings are being treated as errors' @echo ' Multiple levels can be combined with W=12 or W=123' + @echo ' make UT=1 [targets] Warn if a tracepoint is defined but not used.' + @echo ' [ This will be removed when all current unused tracepoints are eliminated. ]' @$(if $(dtstree), \ echo ' make CHECK_DTBS=1 [targets] Check all generated dtb files against schema'; \ echo ' This can be applied both to "dtbs" and to individual "foo.dtb" targets' ; \ |