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authorHeiko Carstens <hca@linux.ibm.com>2023-11-20 21:37:19 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-12-11 04:21:32 +0300
commit66242cfafeea59a0199250dda3dc98736782a739 (patch)
treed16b020b4f4f7f78846060a6498947e5ff61a7ea /Makefile
parentfe1a25eb059b215949825d4c81e26b100e6816a9 (diff)
downloadlinux-66242cfafeea59a0199250dda3dc98736782a739.tar.xz
checkstack: allow to pass MINSTACKSIZE parameter
The checkstack script omits all functions with a stack usage of less than 100 bytes. However the script already has support for a parameter which allows to override the default, but it cannot be set with $ make checkstack Add a MINSTACKSIZE parameter which allows to change the default. This might be useful in order to print the stack usage of all functions, or only those with large stack usage: $ make checkstack MINSTACKSIZE=0 $ make checkstack MINSTACKSIZE=800 Link: https://lkml.kernel.org/r/20231120183719.2188479-4-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Cc: Maninder Singh <maninder1.s@samsung.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Vaneet Narang <v.narang@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 511b5616aa41..5d69bc326204 100644
--- a/Makefile
+++ b/Makefile
@@ -1576,7 +1576,8 @@ help:
echo ' (default: $(INSTALL_HDR_PATH))'; \
echo ''
@echo 'Static analysers:'
- @echo ' checkstack - Generate a list of stack hogs'
+ @echo ' checkstack - Generate a list of stack hogs and consider all functions'
+ @echo ' with a stack size larger than MINSTACKSIZE (default: 100)'
@echo ' versioncheck - Sanity check on version.h usage'
@echo ' includecheck - Check for duplicate included header files'
@echo ' export_report - List the usages of all exported symbols'
@@ -2016,9 +2017,10 @@ CHECKSTACK_ARCH := $(SUBARCH)
else
CHECKSTACK_ARCH := $(ARCH)
endif
+MINSTACKSIZE ?= 100
checkstack:
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
- $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
+ $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) $(MINSTACKSIZE)
kernelrelease:
@$(filechk_kernel.release)