25 May, 2020
4 commits
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if objdump has below entries;
c01ed608 :
c01ed614: e24ddff7 sub sp, sp, #120 ; 0x78c01f0d50 :
c01f0d50: e24dd094 sub sp, sp, #140 ; 0x8cscripts fails to read stack usage.
so making regex $re for ARM similar to aarch64Co-developed-by: Vaneet Narang
Signed-off-by: Vaneet Narang
Signed-off-by: Maninder Singh
Signed-off-by: Masahiro Yamada -
To count stack usage of push {*, fp, ip, lr, pc} instruction in ARM,
if FRAME POINTER is enabled.
e.g. c01f0d48: e92ddff0 push {r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}c01f0d50 :
c01f0d44: e1a0c00d mov ip, sp
c01f0d48: e92ddff0 push {r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}
c01f0d4c: e24cb004 sub fp, ip, #4
c01f0d50: e24dd094 sub sp, sp, #448 ; 0x1C0$ cat dump | scripts/checkstack.pl arm
0xc01f0d50 Y []: 448added subroutine frame work for this.
After change:
0xc01f0d500 Y []: 492Co-developed-by: Vaneet Narang
Signed-off-by: Vaneet Narang
Signed-off-by: Maninder Singh
Signed-off-by: Masahiro Yamada -
Add arguments support to print stacks which are greater than
argument value only.Co-developed-by: Vaneet Narang
Signed-off-by: Vaneet Narang
Signed-off-by: Maninder Singh
Signed-off-by: Masahiro Yamada -
currently script prints stack usage for functions
in two ways:($re and $dre)dre breaks sorting mechanism.
0xffffa00011f26f88 sunxi_mux_clk_setup.isra.0 [vmlinux]:Dynamic (0x140)
..
0xffffa00011f27210 sunxi_divs_clk_setup [vmlinux]: Dynamic (0x1d0)so we can print it in decimal only.
Also address before function name is changed to function
start address rather than stack consumption address.
Because in next patch, arm has two ways to use stack
which can be clubbed and printed in one function only.All symbols whose stack by adding(re and dre) is greater than
100, will be printed.0xffffa00011f2720c0 sunxi_divs_clk_setup [vmlinux]: 464
...
0xffffa00011f26f840 sunxi_mux_clk_setup.isra.0 [vmlinux]:320Co-developed-by: Vaneet Narang
Signed-off-by: Vaneet Narang
Signed-off-by: Maninder Singh
Signed-off-by: Masahiro Yamada
05 Jun, 2019
1 commit
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The following error occurs for the `make ARCH=arm64 checkstack` case:
aarch64-linux-gnu-objdump -d vmlinux $(find . -name '*.ko') | \
perl ./scripts/checkstack.pl arm64
wrong or unknown architecture "arm64"As suggested by Masahiro Yamada, fix the above error using regular
expressions in the same way it was fixed for the `ARCH=x86` case via
commit fda9f9903be6 ("scripts/checkstack.pl: automatically handle
32-bit and 64-bit mode for ARCH=x86").Suggested-by: Masahiro Yamada
Signed-off-by: George G. Davis
Signed-off-by: Masahiro Yamada
29 Dec, 2018
1 commit
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This is to track dynamic amount of stack growth for aarch64, so it is
possible to print out offensive functions that may consume too much stack.
For example,0xffff2000084d1270 try_to_unmap_one [vmlinux]: Dynamic (0xcf0)
0xffff200008538358 migrate_page_move_mapping [vmlinux]: Dynamic (0xc60)
0xffff2000081276c8 copy_process.isra.2 [vmlinux]: Dynamic (0xb20)
0xffff200008424958 show_free_areas [vmlinux]: Dynamic (0xb40)
0xffff200008545178 __split_huge_pmd_locked [vmlinux]: Dynamic (0xb30)
0xffff200008555120 collapse_shmem [vmlinux]: Dynamic (0xbc0)
0xffff20000862e0d0 do_direct_IO [vmlinux]: Dynamic (0xb70)
0xffff200008cc0aa0 md_do_sync [vmlinux]: Dynamic (0xb90)Link: http://lkml.kernel.org/r/20181208025143.39363-1-cai@lca.pw
Signed-off-by: Qian Cai
Cc: Catalin Marinas
Cc: Will Deacon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Dec, 2018
1 commit
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There is actually a space after "sp," like this,
ffff2000080813c8: a9bb7bfd stp x29, x30, [sp, #-80]!
Right now, checkstack.pl isn't able to print anything on aarch64,
because it won't be able to match the stating objdump line of a function
due to this missing space. Hence, it displays every stack as zero-size.After this patch, checkpatch.pl is able to match the start of a
function's objdump, and is then able to calculate each function's stack
correctly.Link: http://lkml.kernel.org/r/20181207195843.38528-1-cai@lca.pw
Signed-off-by: Qian Cai
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Jul, 2018
1 commit
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64-bit ELF v2 ABI specification for POWER describes, on section "General
Stack Frame Requirements", that the stack should use the following
instructions when compiled with backchain:mflr r0
std r0, 16(r1)
stdu r1, -XX(r1)Where XX is the frame size for that function, and this is the value
checkstack.pl will find the stack size for each function.This patch also simplifies the entire Powerpc section, since just two
type of instructions are used, 'stdu' for 64 bits and 'stwu' for 32 bits
platform.Signed-off-by: Breno Leitao
Signed-off-by: Michael Ellerman
26 Mar, 2018
1 commit
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The Blackfin port has been removed from the kernel, also remove the
blackfin specific bits from the checkstack.pl script.Signed-off-by: Tobias Klauser
Signed-off-by: Arnd Bergmann
23 Feb, 2018
1 commit
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Now that arch/metag/ has been removed, drop a bunch of metag references
in various codes across the whole tree:
- VM_GROWSUP and __VM_ARCH_SPECIFIC_1.
- MT_METAG_* ELF note types.
- METAG Kconfig dependencies (FRAME_POINTER) and ranges
(MAX_STACK_SIZE_MB).
- metag cases in tools (checkstack.pl, recordmcount.c, perf).Signed-off-by: James Hogan
Acked-by: Steven Rostedt (VMware)
Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Guenter Roeck
Cc: Ingo Molnar
Cc: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: linux-mm@kvack.org
Cc: linux-metag@vger.kernel.org
02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
14 May, 2017
1 commit
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The default NetBSD package manager is pkgsrc and it installs Perl
along other third party programs under custom and configurable prefix.
The default prefix for binary prebuilt packages is /usr/pkg, and the
Perl executable lands in /usr/pkg/bin/perl.This change switches "/usr/bin/perl" to "/usr/bin/env perl" as it's
the most portable solution that should work for almost everybody.
Perl's executable is detected automatically.This change switches -w option passed to the executable with more
modern "use warnings;" approach. There is no functional change to the
default behavior.While there, drop "require 5" from scripts/namespace.pl (Perl from 1994?).
Signed-off-by: Kamil Rytarowski
Signed-off-by: Masahiro Yamada
01 May, 2017
1 commit
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The AVR32 architecture support has been removed from the kernel, hence
remove the related bits from checkstack.pl script.Signed-off-by: Hans-Christian Noren Egtvedt
Signed-off-by: Håvard Skinnemoen
Signed-off-by: Nicolas Ferre
Acked-by: Andy Shevchenko
Acked-by: Boris Brezillon
25 Feb, 2017
2 commits
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Pull OpenRISC updates from Stafford Horne:
"Highlights include:- optimized memset and memcpy routines, ~20% boot time saving
- support for cpu idling
- adding support for l.swa and l.lwa atomic operations (in spec from
2014)- use atomics to implement: bitops, cmpxchg, futex
- the atomics are in preparation for SMP support"
* tag 'openrisc-for-linus' of git://github.com/openrisc/linux: (25 commits)
openrisc: head: Init r0 to 0 on start
openrisc: Export ioremap symbols used by modules
arch/openrisc/lib/memcpy.c: use correct OR1200 option
openrisc: head: Remove unused strings
openrisc: head: Move init strings to rodata section
openrisc: entry: Fix delay slot detection
openrisc: entry: Whitespace and comment cleanups
scripts/checkstack.pl: Add openrisc support
MAINTAINERS: Add the openrisc official repository
openrisc: Add .gitignore
openrisc: Add optimized memcpy routine
openrisc: Add optimized memset
openrisc: Initial support for the idle state
openrisc: Fix the bitmask for the unit present register
openrisc: remove unnecessary stddef.h include
openrisc: add futex_atomic_* implementations
openrisc: add optimized atomic operations
openrisc: add cmpxchg and xchg implementations
openrisc: add atomic bitops
openrisc: add l.lwa/l.swa emulation
... -
Openrisc stack pointer is managed by decrementing r1. Add regexes to
recognize this.Signed-off-by: Stafford Horne
23 Feb, 2017
1 commit
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Adjust checkstack.pl for the nios2 architecture.
Link: http://lkml.kernel.org/r/20170116113052.15034-1-tklauser@distanz.ch
Signed-off-by: Tobias Klauser
Cc: Ley Foon Tan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Oct, 2014
1 commit
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Pull "trivial tree" updates from Jiri Kosina:
"Usual pile from trivial tree everyone is so eagerly waiting for"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
Remove MN10300_PROC_MN2WS0038
mei: fix comments
treewide: Fix typos in Kconfig
kprobes: update jprobe_example.c for do_fork() change
Documentation: change "&" to "and" in Documentation/applying-patches.txt
Documentation: remove obsolete pcmcia-cs from Changes
Documentation: update links in Changes
Documentation: Docbook: Fix generated DocBook/kernel-api.xml
score: Remove GENERIC_HAS_IOMAP
gpio: fix 'CONFIG_GPIO_IRQCHIP' comments
tty: doc: Fix grammar in serial/tty
dma-debug: modify check_for_stack output
treewide: fix errors in printk
genirq: fix reference in devm_request_threaded_irq comment
treewide: fix synchronize_rcu() in comments
checkstack.pl: port to AArch64
doc: queue-sysfs: minor fixes
init/do_mounts: better syntax description
MIPS: fix comment spelling
powerpc/simpleboot: fix comment
...
28 Aug, 2014
1 commit
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AArch64 stores the frame pointer and return pointer, and decrements the
stack. Also remove my (no longer valid) email address.Signed-off-by: Kyle McMartin
Signed-off-by: Jiri Kosina
09 Aug, 2014
1 commit
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This patch adds support for ARCH=x86 into checkstack.
Commit ffee0de411fd ("x86: Default to ARCH=x86 to avoid overriding
CONFIG_64BIT") had merged ARCH=i386 and ARCH=x86_64 into one ARCH=x86.
checkstack.pl searches patterns of machine instructions which are
usually used for allocating stack frames. checkstalk.pl needs either
i386 or x86_64, x86 isn't enough:$ make checkstack
objdump -d vmlinux $(find . -name '*.ko') | \
perl linux/scripts/checkstack.pl x86
wrong or unknown architecture "x86"Signed-off-by: Konstantin Khlebnikov
Cc: David Woodhouse
Cc: "H. Peter Anvin"
Cc: Richard Weinberger
Cc: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
10 Jun, 2014
1 commit
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Signed-off-by: Masahiro Yamada
03 Mar, 2013
1 commit
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Adapt checkstack.pl so that it works for metag.
Signed-off-by: James Hogan
19 May, 2011
1 commit
-
Haavard's e-mail address at Atmel is no longer valid.
Signed-off-by: Jean Delvare
Acked-by: Havard Skinnemoen
Signed-off-by: Jiri Kosina
08 Mar, 2010
1 commit
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Cleanup checkstack script:
* Turn on strict checking
* Fix resulting error message because the declaration syntax
was incorrect.
* Remove incorrect and misleading use of prototype
- prototype not required for this type of sort function
because $a and $b are being used in this contex
- if prototype was being used it should be for both arguments
* Use closure for sort functionSigned-off-by: Stephen Hemminger
Cc: Steven Rostedt
Cc: Arjan van de Ven
Cc: Cong Wang
Cc: Michal Marek
Signed-off-by: Andrew Morton
Signed-off-by: Michal Marek
23 Oct, 2008
1 commit
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Add sparc support to checkstack.
Signed-off-by: Martin Habets
Signed-off-by: David S. Miller
11 Oct, 2008
1 commit
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With -march=z990 and later gcc can use the long displacement facility
insruction lay for stack register handling. This patch adopts checkstack
to catch lay in addition to ahi and aghi.Signed-off-by: Christian Borntraeger
Signed-off-by: Martin Schwidefsky
26 Jul, 2008
2 commits
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uname -m was leaving a newline in $arch, and not passing the tests.
Also, printing the unknown arch on failure is probably helpful.
Signed-off-by: Eric Sandeen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently, checkstack.pl only looks for fixed subtractions from the stack
pointer. However, things like this:void function(int size)
{
char stackbuster[size << 2];
...are certainly worth pointing out, I think.
This could perhaps be done more cleanly, and the following patch only
adds "dynamic" REs for x86 and x86_64, but it works:0x00b0 crypto_cbc_decrypt_inplace [cbc]: Dynamic (%rax)
0x00ad crypto_pcbc_decrypt_inplace [pcbc]: Dynamic (%rax)
0x02f6 crypto_pcbc_encrypt_inplace [pcbc]: Dynamic (%rax)
0x036c _crypto_xcbc_digest_setkey [xcbc]: Dynamic (%rax)
...(Inspired by Keith Owens' old stack-check script)
Signed-off-by: Eric Sandeen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Feb, 2008
1 commit
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I have been prime author and maintainer of block2mtd from day one, but
neither MAINTAINERS nor the module source makes this fact clear. And while
I'm at it, update my email addresses tree-wide, as the old address
currently bounces and change my name to "joern" as unicode will likely
continue to cause trouble until the end of this century.Signed-off-by: Joern Engel
Cc: David Woodhouse
Cc: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Oct, 2007
2 commits
-
* 'master' of hera.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (29 commits)
[PARISC] fix uninitialized variable warning in asm/rtc.h
[PARISC] Port checkstack.pl to parisc
[PARISC] Make palo target work when $obj != $src
[PARISC] Zap unused variable warnings in pci.c
[PARISC] Fix tests in palo target
[PARISC] Fix palo target
[PARISC] Restore palo target
[PARISC] Attempt to clean up parisc/Makefile
[PARISC] Fix infinite loop in /proc/iomem
[PARISC] Quiet sysfs_create_link __must_check warnings in pdc_stable
[PARISC] Squelch pci_enable_device __must_check warning in superio
[PARISC] Kill off broken irqstack code
[PARISC] Remove hardcoded uses of PAGE_SIZE
[PARISC] Clean up pointless ASM_PAGE_SIZE_DIV use
[PARISC] Kill off the last vestiges of ASM_PAGE_SIZE
[PARISC] Kill off ASM_PAGE_SIZE use
[PARISC] Beautify parisc vmlinux.lds.S
[PARISC] Clean up a resource_size_t warning in sba_iommu
[PARISC] Kill incorrect cast warning in unwinder
[PARISC] Kill zone_to_nid printk warning
...Fixed trivial conflict in include/asm-parisc/tlbflush.h manually
-
Signed-off-by: Kyle McMartin
20 Oct, 2007
1 commit
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Trivial change in a comment.
Signed-off-by: Joern Engel
Signed-off-by: Andre Haupt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Oct, 2007
1 commit
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Simply fill out the bits in checkstack.pl for Blackfin. I thought I already
sent this, but I don't see it in -mm anywhere ...Signed-off-by: Mike Frysinger
Cc: Bryan Wu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Oct, 2007
1 commit
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Add regexes to recognize stack frame adjustments in AVR32 code.
Signed-off-by: Haavard Skinnemoen
25 Aug, 2006
1 commit
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This patch adds 'powerpc' architecture support to checkstack.pl.
Signed-off-by: Johannes Berg
Signed-off-by: Paul Mackerras
26 Jun, 2006
1 commit
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Finding "init_module" high stack usage problems is challenging when there
are over 1600 "init_module" functions in the kernel tree, so make
checkstack.pl print out the filename where the stack usage occurs. This is
useful for code built as loadable modules.For built-in code, it just prints the kernel image file name, like
"vmlinux". Examples:(before patch:)
0x0000000d callback: 1928
0xffffffff81678c09 huft_build: 1560
0x0018 init_module: 1512(after patch:)
0x0000000d callback [divacapi]: 1928
0xffffffff81678c09 huft_build [vmlinux]: 1560
0x0018 init_module [hdaps]: 1512Also change one if-series to use elsif to cut down on unneeded tests.
Signed-off-by: Randy Dunlap
Acked-by: Joern Engel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Apr, 2006
1 commit
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Make it executable like it should be. Do the same for other files intended to be
executed by the user - the ones called by the build process needn't be
executable as they already work (as argument to their interpreter).Signed-off-by: Paolo 'Blaisorblade' Giarrusso
Signed-off-by: Sam Ravnborg
17 Apr, 2005
1 commit
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.Let it rip!
