linux/scripts
Linus Torvalds 9b1f61d5d7 tracing updates for 5.13
New feature:
 
  The "func-no-repeats" option in tracefs/options directory. When set
  the function tracer will detect if the current function being traced
  is the same as the previous one, and instead of recording it, it will
  keep track of the number of times that the function is repeated in a row.
  And when another function is recorded, it will write a new event that
  shows the function that repeated, the number of times it repeated and
  the time stamp of when the last repeated function occurred.
 
 Enhancements:
 
  In order to implement the above "func-no-repeats" option, the ring
  buffer timestamp can now give the accurate timestamp of the event
  as it is being recorded, instead of having to record an absolute
  timestamp for all events. This helps the histogram code which no longer
  needs to waste ring buffer space.
 
  New validation logic to make sure all trace events that access
  dereferenced pointers do so in a safe way, and will warn otherwise.
 
 Fixes:
 
  No longer limit the PIDs of tasks that are recorded for "saved_cmdlines"
  to PID_MAX_DEFAULT (32768), as systemd now allows for a much larger
  range. This caused the mapping of PIDs to the task names to be dropped
  for all tasks with a PID greater than 32768.
 
  Change trace_clock_global() to never block. This caused a deadlock.
 
 Clean ups:
 
  Typos, prototype fixes, and removing of duplicate or unused code.
 
  Better management of ftrace_page allocations.
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Merge tag 'trace-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "New feature:

   - A new "func-no-repeats" option in tracefs/options directory.

     When set the function tracer will detect if the current function
     being traced is the same as the previous one, and instead of
     recording it, it will keep track of the number of times that the
     function is repeated in a row. And when another function is
     recorded, it will write a new event that shows the function that
     repeated, the number of times it repeated and the time stamp of
     when the last repeated function occurred.

  Enhancements:

   - In order to implement the above "func-no-repeats" option, the ring
     buffer timestamp can now give the accurate timestamp of the event
     as it is being recorded, instead of having to record an absolute
     timestamp for all events. This helps the histogram code which no
     longer needs to waste ring buffer space.

   - New validation logic to make sure all trace events that access
     dereferenced pointers do so in a safe way, and will warn otherwise.

  Fixes:

   - No longer limit the PIDs of tasks that are recorded for
     "saved_cmdlines" to PID_MAX_DEFAULT (32768), as systemd now allows
     for a much larger range. This caused the mapping of PIDs to the
     task names to be dropped for all tasks with a PID greater than
     32768.

   - Change trace_clock_global() to never block. This caused a deadlock.

  Clean ups:

   - Typos, prototype fixes, and removing of duplicate or unused code.

   - Better management of ftrace_page allocations"

* tag 'trace-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (32 commits)
  tracing: Restructure trace_clock_global() to never block
  tracing: Map all PIDs to command lines
  ftrace: Reuse the output of the function tracer for func_repeats
  tracing: Add "func_no_repeats" option for function tracing
  tracing: Unify the logic for function tracing options
  tracing: Add method for recording "func_repeats" events
  tracing: Add "last_func_repeats" to struct trace_array
  tracing: Define new ftrace event "func_repeats"
  tracing: Define static void trace_print_time()
  ftrace: Simplify the calculation of page number for ftrace_page->records some more
  ftrace: Store the order of pages allocated in ftrace_page
  tracing: Remove unused argument from "ring_buffer_time_stamp()
  tracing: Remove duplicate struct declaration in trace_events.h
  tracing: Update create_system_filter() kernel-doc comment
  tracing: A minor cleanup for create_system_filter()
  kernel: trace: Mundane typo fixes in the file trace_events_filter.c
  tracing: Fix various typos in comments
  scripts/recordmcount.pl: Make vim and emacs indent the same
  scripts/recordmcount.pl: Make indent spacing consistent
  tracing: Add a verifier to check string pointers for trace events
  ...
2021-05-03 11:19:54 -07:00
..
atomic locking/atomics: Regenerate the atomics-check SHA1's 2020-11-07 13:20:41 +01:00
basic kbuild: redo fake deps at include/config/*.h 2021-04-25 05:26:10 +09:00
clang-tools gen_compile_commands: prune some directories 2021-02-16 22:23:56 +09:00
coccinelle of: Remove of_dev_{get,put}() 2021-02-12 19:23:39 -06:00
dtc Devicetree fixes for v5.12-rc: 2021-03-05 12:12:28 -08:00
dummy-tools kbuild: check the minimum assembler version in Kconfig 2021-04-25 05:14:41 +09:00
gcc-plugins kbuild: rebuild GCC plugins when the compiler is upgraded 2021-03-11 14:40:50 +09:00
gdb scripts/gdb: fix list_for_each 2021-02-26 09:41:05 -08:00
genksyms genksyms: remove useless case DOTS 2021-02-16 12:01:45 +09:00
kconfig Kconfig updates for v5.13 2021-04-29 14:32:00 -07:00
ksymoops
mod kbuild: add an elfnote for whether vmlinux is built with lto 2021-04-25 05:25:42 +09:00
package builddeb: Fix rootless build in setuid/setgid directory 2020-11-02 11:31:00 +09:00
selinux scripts/selinux,selinux: update mdp to enable policy capabilities 2020-08-17 20:42:00 -04:00
tracing tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
.gitignore kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
adjust_autoksyms.sh kbuild: do not include include/config/auto.conf from adjust_autoksyms.sh 2021-02-28 15:22:02 +09:00
as-version.sh kbuild: check the minimum assembler version in Kconfig 2021-04-25 05:14:41 +09:00
asn1_compiler.c
bin2c.c
bloat-o-meter scripts: switch explicitly to Python 3 2021-01-22 06:34:44 +09:00
bootgraph.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391 2019-06-05 17:37:11 +02:00
bpf_doc.py scripts/bpf: Add syscall commands printer 2021-03-04 18:39:45 -08:00
cc-can-link.sh
cc-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
check_extable.sh
check-sysctl-docs docs: add a script to check sysctl docs 2020-02-25 03:35:16 -07:00
checkdeclares.pl scripts: a new script for checking duplicate struct declaration 2021-04-30 11:20:35 -07:00
checkincludes.pl
checkkconfigsymbols.py kconfig: remove '---help---' support 2020-08-14 13:30:03 +09:00
checkpatch.pl Devicetree updates for v5.13: 2021-04-28 15:50:24 -07:00
checkstack.pl scripts/checkstack.pl: fix arm sp regex 2020-05-26 00:03:16 +09:00
checksyscalls.sh
checkversion.pl
cleanfile
cleanpatch
coccicheck scripts: coccicheck: Correct usage of make coccicheck 2020-12-24 12:59:43 +01:00
config kconfig: config script: add a little user help 2021-01-04 10:38:11 +09:00
const_structs.checkpatch const_structs.checkpatch: add pinctrl_ops and pinmux_ops 2020-10-16 11:11:21 -07:00
decode_stacktrace.sh scripts/decode_stacktrace.sh: guess path to vmlinux by release name 2020-08-07 11:33:21 -07:00
decodecode scripts/decodecode: add the capability to supply the program counter 2020-10-13 18:38:26 -07:00
depmod.sh depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-01 12:26:39 -08:00
dev-needs.sh scripts/dev-needs: Add script to list device dependencies 2020-09-04 18:19:37 +02:00
diffconfig scripts: switch explicitly to Python 3 2021-01-22 06:34:44 +09:00
documentation-file-ref-check scripts: documentation-file-ref-check: Add line break before exit 2020-04-15 15:13:13 -06:00
export_report.pl modpost: move the namespace field in Module.symvers last 2020-03-17 08:59:03 +09:00
extract_xc3028.pl
extract-cert.c extract-cert: add static to local data 2020-08-18 20:16:46 +09:00
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
faddr2line
file-size.sh
find-unused-docs.sh scripts/find-unused-docs: Fix massive false positives 2020-01-27 14:25:06 -07:00
gcc-goto.sh
gcc-ld
gcc-x86_32-has-stack-protector.sh x86/stackprotector/32: Make the canary into a regular percpu variable 2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh kbuild: fix UNUSED_KSYMS_WHITELIST for Clang LTO 2021-02-28 15:19:21 +09:00
gen_ksymdeps.sh
generate_initcall_order.pl init: lto: ensure initcall ordering 2021-01-14 08:21:09 -08:00
get_abi.pl scripts: get_abi: ignore code blocks for cross-references 2021-03-31 13:53:16 -06:00
get_dvb_firmware
get_feat.pl scripts: get_feat.pl: reduce table width for all features output 2020-12-04 14:34:27 -07:00
get_maintainer.pl get_maintainer: exclude MAINTAINERS file(s) from --git-fallback 2020-10-16 11:11:19 -07:00
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
insert-sys-cert.c
jobserver-exec kbuild: remove PYTHON variable 2021-02-01 10:37:19 +09:00
kallsyms.c kallsyms: fix nonconverging kallsyms table with lld 2021-02-05 17:53:28 +09:00
Kbuild.include kbuild: split cc-option and friends to scripts/Makefile.compiler 2021-04-25 05:09:32 +09:00
Kconfig.include kbuild: check the minimum assembler version in Kconfig 2021-04-25 05:14:41 +09:00
kernel-doc scripts: kernel-doc: improve parsing for kernel-doc comments syntax 2021-04-15 15:26:06 -06:00
ld-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
leaking_addresses.pl
Lindent
link-vmlinux.sh Kbuild updates for v5.13 2021-04-29 14:24:39 -07:00
Makefile Fix CVE-2020-26541 2021-04-26 08:38:10 -07:00
Makefile.asm-generic kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.build kbuild: redo fake deps at include/config/*.h 2021-04-25 05:26:10 +09:00
Makefile.clean kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.compiler kbuild: remove TMPO from try-run 2021-04-25 05:25:56 +09:00
Makefile.dtbinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.extrawarn Makefile.extrawarn: remove -Wnested-externs warning 2020-12-08 23:30:05 +09:00
Makefile.gcc-plugins gcc-plugins/stackleak: Use asm instrumentation to avoid useless register saving 2020-06-24 07:48:28 -07:00
Makefile.headersinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.host kbuild: sort hostprogs before passing it to ifneq 2020-08-10 01:32:59 +09:00
Makefile.kasan kasan: remove redundant config option 2021-04-16 16:10:36 -07:00
Makefile.kcov kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled 2020-08-10 01:32:59 +09:00
Makefile.kcsan Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
Makefile.lib Kbuild updates for v5.13 2021-04-29 14:24:39 -07:00
Makefile.modfinal add support for Clang CFI 2021-04-08 16:04:20 -07:00
Makefile.modinst kbuild: add support for zstd compressed modules 2021-04-25 05:25:06 +09:00
Makefile.modpost kbuild: fix false-positive modpost warning when all symbols are trimmed 2021-04-25 05:17:53 +09:00
Makefile.package kbuild: deb-pkg: change the source package name to linux-upstream 2021-04-25 05:30:45 +09:00
Makefile.ubsan ubsan: remove overflow checks 2021-02-26 09:41:05 -08:00
Makefile.userprogs kbuild: add infrastructure to build userspace programs 2020-05-17 18:52:01 +09:00
makelst
markup_oops.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373 2019-06-05 17:37:10 +02:00
min-tool-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
mkcompile_h kbuild: Use uname for LINUX_COMPILE_HOST detection 2020-10-21 00:46:04 +09:00
mkmakefile kbuild: get rid of $(realpath ...) from scripts/mkmakefile 2019-08-29 23:54:29 +09:00
mksysmap mksysmap: Fix the mismatch of '.L' symbols in System.map 2020-06-06 23:39:20 +09:00
mkuboot.sh
module.lds.S module: ensure __cfi_check alignment 2021-04-08 16:04:21 -07:00
modules-check.sh kbuild: check module name conflict for external modules as well 2021-04-25 05:22:42 +09:00
nsdeps kbuild: do not use scripts/ld-version.sh for checking spatch version 2020-12-12 18:31:29 +01:00
objdiff
parse-maintainers.pl parse-maintainers: Do not sort section content by default 2020-03-26 15:08:27 -07:00
patch-kernel
profile2linkerlist.pl
prune-kernel
recordmcount.c ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount 2021-03-02 17:27:18 -05:00
recordmcount.h recordmcount: support >64k sections 2020-06-16 21:21:00 -04:00
recordmcount.pl scripts/recordmcount.pl: Make vim and emacs indent the same 2021-03-22 17:51:16 -04:00
setlocalversion scripts/setlocalversion: make git describe output more reliable 2020-09-25 02:28:12 +09:00
show_delta tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
sign-file.c
sorttable.c s390/kernel: expand exception table logic to allow new handling options 2020-07-20 10:55:50 +02:00
sorttable.h scripts/sorttable: Implement build-time ORC unwind table sorting 2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
spdxcheck.py scripts/spdxcheck.py: Fix a typo 2021-03-28 14:41:49 +02:00
spelling.txt scripts/spelling.txt: add entries for recent discoveries 2021-04-30 11:20:35 -07:00
sphinx-pre-install docs: sphinx-pre-install: don't barf on beta Sphinx releases 2021-04-15 16:01:50 -06:00
split-man.pl tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
stackdelta
stackusage
subarch.include
syscallhdr.sh scripts: add generic syscallhdr.sh 2021-02-22 08:22:04 +09:00
syscalltbl.sh scripts: add generic syscalltbl.sh 2021-02-22 08:22:03 +09:00
tags.sh Merge branch 'locking/urgent' into locking/core, to pick up fixes 2020-10-09 08:55:17 +02:00
tools-support-relr.sh scripts/tools-support-relr.sh: un-quote variables 2019-11-13 10:52:05 +00:00
unifdef.c
ver_linux ver_linux: Eliminate duplicate code in ldconfig processing logic 2021-01-27 14:54:42 +01:00
xen-hypercalls.sh
xz_wrap.sh kbuild: add variables for compression tools 2020-06-06 23:42:01 +09:00