Steven Rostedt (Google) bcb65adaa9 ftrace/scripts: Update the instructions for ftrace-bisect.sh ... commit 7ae4ba7195 upstream. The instructions for the ftrace-bisect.sh script, which is used to find what function is being traced that is causing a kernel crash, and possibly a triple fault reboot, uses the old method. In 5.1, a new feature was added that let the user write in the index into available_filter_functions that maps to the function a user wants to set in set_ftrace_filter (or set_ftrace_notrace). This takes O(1) to set, as suppose to writing a function name, which takes O(n) (where n is the number of functions in available_filter_functions). The ftrace-bisect.sh requires setting half of the functions in available_filter_functions, which is O(n^2) using the name method to enable and can take several minutes to complete. The number method is O(n) which takes less than a second to complete. Using the number method for any kernel 5.1 and after is the proper way to do the bisect. Update the usage to reflect the new change, as well as using the /sys/kernel/tracing path instead of the obsolete debugfs path. Link: https://lkml.kernel.org/r/20230123112252.022003dd@gandalf.local.home Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Fixes: f79b3f3385 ("ftrace: Allow enabling of filters via index of available_filter_functions") Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-02-06 07:52:44 +01:00
..
atomic	locking/atomics: Use sed(1) instead of non-standard head(1) option	2019-06-25 10:17:07 +02:00
basic	kbuild: remove unneeded comments and code from scripts/basic/Makefile	2019-08-29 23:54:29 +09:00
coccinelle	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
dtc	scripts/dtc: dtx_diff: remove broken example from help text	2022-01-27 09:19:55 +01:00
gcc-plugins	gcc-plugins: latent_entropy: use /dev/urandom	2022-04-20 09:19:38 +02:00
gdb	scripts/gdb: change kernel config dumping method	2022-06-14 18:12:02 +02:00
genksyms	genksyms: convert to SPDX License Identifier for lex.l and parse.y	2019-09-14 11:40:13 +09:00
kconfig	kconfig: fix failing to generate auto.conf	2022-02-23 12:00:01 +01:00
ksymoops
mod	modpost: fix section mismatch check for exported init/exit sections	2022-06-29 08:58:49 +02:00
package	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-09-03 11:27:10 +02:00
selinux	selinux: use "grep -E" instead of "egrep"	2022-10-26 13:22:21 +02:00
tracing	ftrace/scripts: Update the instructions for ftrace-bisect.sh	2023-02-06 07:52:44 +01:00
.gitignore
adjust_autoksyms.sh	kbuild: remove the first line of *.mod files	2019-07-18 02:19:31 +09:00
asn1_compiler.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
bin2c.c
bloat-o-meter	scripts: switch explicitly to Python 3	2021-05-22 11:38:30 +02:00
bootgraph.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391	2019-06-05 17:37:11 +02:00
bpf_helpers_doc.py	bpf: fix script for generating man page on BPF helpers	2019-05-13 01:12:45 +02:00
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
checkpatch.pl	checkpatch: fix unescaped left brace	2020-12-30 11:51:27 +01:00
checkstack.pl	scripts/checkstack.pl: Fix arm64 wrong or unknown architecture	2019-06-05 02:33:10 +09:00
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config	tweewide: Fix most Shebang lines	2021-05-22 11:38:30 +02:00
conmakehash.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54	2019-05-24 17:36:42 +02:00
const_structs.checkpatch
decode_stacktrace.sh	scripts/decode_stacktrace: strip basepath from all paths	2020-07-29 10:18:35 +02:00
decodecode	scripts/decodecode: fix trapping instruction formatting	2020-05-14 07:58:29 +02:00
depmod.sh	depmod: handle the case of /sbin/depmod without /sbin in PATH	2021-01-12 20:16:10 +01:00
diffconfig	scripts: switch explicitly to Python 3	2021-05-22 11:38:30 +02:00
documentation-file-ref-check	scripts/documentation-file-ref-check: ignore output dir	2019-06-14 14:43:01 -06:00
export_report.pl	modpost: move the namespace field in Module.symvers last	2020-03-25 08:25:55 +01:00
extract-cert.c	cert host tools: Stop complaining about deprecated OpenSSL functions	2022-11-25 17:42:10 +01:00
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
extract_xc3028.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339	2019-06-05 17:37:07 +02:00
faddr2line	scripts/faddr2line: Fix regression in name resolution on ppc64le	2022-12-08 11:23:02 +01:00
file-size.sh
find-unused-docs.sh	scripts/find-unused-docs: Fix massive false positives	2020-02-11 04:35:23 -08:00
gcc-goto.sh
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_compile_commands.py	gen_compile_commands: lower the entry count threshold	2019-07-27 12:18:19 +09:00
gen_ksymdeps.sh	kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y	2021-09-22 12:26:26 +02:00
get_abi.pl	tweewide: Fix most Shebang lines	2021-05-22 11:38:30 +02:00
get_dvb_firmware	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
get_maintainer.pl	get_maintainer: add ability to skip moderated mailing lists	2019-07-16 19:23:22 -07:00
gfp-translate	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
headerdep.pl
headers_check.pl
headers_install.sh	scripts: headers_install: Exit with error on config leak	2020-06-24 17:50:33 +02:00
insert-sys-cert.c
kallsyms.c	scripts/kallsyms: fix definitely-lost memory leak	2020-01-04 19:18:23 +01:00
Kbuild.include	kbuild: remove the target in signal traps when interrupted	2022-10-26 13:22:46 +02:00
Kconfig.include	kconfig: introduce m32-flag and m64-flag	2020-04-08 09:08:37 +02:00
kernel-doc	kernel-doc: Allow anonymous enum	2019-08-12 15:00:37 -06:00
ld-version.sh
leaking_addresses.pl	leaking_addresses: Always print a trailing newline	2021-11-17 09:48:31 +01:00
Lindent
link-vmlinux.sh	bpf: Support llvm-objcopy for vmlinux BTF	2020-06-17 16:40:20 +02:00
Makefile	scripts: set proper OpenSSL include dir also for sign-file	2021-02-26 10:10:27 +01:00
Makefile.asm-generic	kbuild: force all architectures except um to include mandatory-y	2019-03-17 12:56:32 +09:00
Makefile.build	kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n'	2021-07-14 16:53:20 +02:00
Makefile.clean	kbuild: clean up subdir-ymn calculation in Makefile.clean	2019-08-29 23:54:29 +09:00
Makefile.dtbinst
Makefile.extrawarn	Makefile.extrawarn: Move -Wcast-function-type-strict to W=1	2022-10-07 09:16:57 +02:00
Makefile.gcc-plugins	gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file	2022-08-25 11:18:31 +02:00
Makefile.headersinst	kbuild: move headers_check rule to usr/include/Makefile	2020-03-05 16:43:47 +01:00
Makefile.host	kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)	2019-09-04 23:12:50 +09:00
Makefile.kasan	kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE	2019-08-15 13:24:04 +01:00
Makefile.kcov	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile.lib	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-09-03 11:27:10 +02:00
Makefile.modbuiltin	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
Makefile.modfinal	kbuild: move modkern_{c,a}flags to Makefile.lib from Makefile.build	2019-08-22 01:14:11 +09:00
Makefile.modinst	kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod	2019-07-17 22:39:27 +09:00
Makefile.modpost	kbuild: Fix include path in scripts/Makefile.modpost	2022-09-05 10:27:45 +02:00
Makefile.modsign	kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod	2019-07-17 22:39:27 +09:00
Makefile.package	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-09-03 11:27:10 +02:00
Makefile.ubsan	ubsan: Remove vla bound checks.	2019-05-06 11:12:09 -07:00
makelst
markup_oops.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373	2019-06-05 17:37:10 +02:00
mkcompile_h	kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set	2021-07-25 14:35:12 +02:00
mkmakefile	kbuild: get rid of $(realpath ...) from scripts/mkmakefile	2019-08-29 23:54:29 +09:00
mksysmap	mksysmap: Fix the mismatch of 'L0' symbols in System.map	2022-09-28 11:03:59 +02:00
mkuboot.sh
module-common.lds
modules-check.sh	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
namespace.pl	namespace: fix namespace.pl script to support relative paths	2019-10-05 15:29:49 +09:00
nsdeps	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
objdiff	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199	2019-05-30 11:29:23 -07:00
parse-maintainers.pl	parse-maintainers: Mark as executable	2020-03-25 08:25:49 +01:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c	ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount	2021-03-09 11:09:39 +01:00
recordmcount.h	recordmcount: Correct st_shndx handling	2021-06-30 08:47:49 -04:00
recordmcount.pl	recordmcount.pl: fix typo in s390 mcount regex	2022-01-05 12:37:44 +01:00
setlocalversion	scripts/setlocalversion: make git describe output more reliable	2020-11-01 12:01:01 +01:00
show_delta	tweewide: Fix most Shebang lines	2021-05-22 11:38:30 +02:00
sign-file.c	cert host tools: Stop complaining about deprecated OpenSSL functions	2022-11-25 17:42:10 +01:00
sortextable.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
sortextable.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
spdxcheck-test.sh
spdxcheck.py	spdxcheck.py: fix directory structures	2019-06-01 15:51:31 -07:00
spelling.txt	scripts/spelling.txt: add more spellings to spelling.txt	2019-07-12 11:05:41 -07:00
sphinx-pre-install	tweewide: Fix most Shebang lines	2021-05-22 11:38:30 +02:00
split-man.pl	tweewide: Fix most Shebang lines	2021-05-22 11:38:30 +02:00
stackdelta
stackusage
subarch.include
tags.sh	kbuild: add a flag to force absolute path for srctree	2019-07-11 00:05:09 +09:00
tools-support-relr.sh	Makefile: fix GDB warning with CONFIG_RELR	2021-07-14 16:53:12 +02:00
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh	kbuild: add variables for compression tools	2020-09-03 11:27:10 +02:00