The patch titled
Subject: checkstack: allow to pass MINSTACKSIZE parameter
has been added to the -mm mm-nonmm-unstable branch. Its filename is
checkstack-allow-to-pass-minstacksize-parameter.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/checkstack-allow-to-pass-minstacksize-parameter.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Heiko Carstens <hca@xxxxxxxxxxxxx>
Subject: checkstack: allow to pass MINSTACKSIZE parameter
Date: Mon, 20 Nov 2023 19:37:19 +0100
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@xxxxxxxxxxxxx
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Maninder Singh <maninder1.s@xxxxxxxxxxx>
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: Vaneet Narang <v.narang@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Makefile | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/Makefile~checkstack-allow-to-pass-minstacksize-parameter
+++ a/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)
_
Patches currently in -mm which might be from hca@xxxxxxxxxxxxx are
checkstack-fix-printed-address.patch
arch-remove-arch_thread_stack_allocator.patch
arch-remove-arch_task_struct_allocator.patch
arch-remove-arch_task_struct_on_stack.patch
checkstack-sort-output-by-size-and-function-name.patch
checkstack-allow-to-pass-minstacksize-parameter.patch
