+ checkstack-allow-to-pass-minstacksize-parameter.patch added to mm-nonmm-unstable branch

+ checkstack-allow-to-pass-minstacksize-parameter.patch added to mm-nonmm-unstable branch

[Andrew Morton]

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@linux.ibm.com>
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@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>
---

 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@linux.ibm.com 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