Josh Poimboeuf ee9f8fce99 x86/unwind: Add the ORC unwinder ... Add the new ORC unwinder which is enabled by CONFIG_ORC_UNWINDER=y. It plugs into the existing x86 unwinder framework. It relies on objtool to generate the needed .orc_unwind and .orc_unwind_ip sections. For more details on why ORC is used instead of DWARF, see Documentation/x86/orc-unwinder.txt - but the short version is that it's a simplified, fundamentally more robust debugninfo data structure, which also allows up to two orders of magnitude faster lookups than the DWARF unwinder - which matters to profiling workloads like perf. Thanks to Andy Lutomirski for the performance improvement ideas: splitting the ORC unwind table into two parallel arrays and creating a fast lookup table to search a subset of the unwind table. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/0a6cbfb40f8da99b7a45a1a8302dc6aef16ec812.1500938583.git.jpoimboe@redhat.com [ Extended the changelog. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-07-26 13:18:20 +02:00
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basic	…
coccinelle	drm: Introduce drm_property_blob_{get,put}()	2017-02-28 16:16:46 +01:00
dtc	Kbuild misc updates for 4.13	2017-07-07 15:09:09 -07:00
gcc-plugins	randstruct: Whitelist NIU struct page overloading	2017-06-22 16:21:43 -07:00
gdb	scripts/gdb: lx-dmesg: use explicit encoding=utf8 errors=replace	2017-07-12 16:26:01 -07:00
genksyms	genksyms: add printf format attribute to error_with_pos()	2017-06-06 01:22:48 +09:00
kconfig	Kbuild misc updates for 4.13	2017-07-07 15:09:09 -07:00
ksymoops	Fix dead URLs to ftp.kernel.org	2017-03-28 16:16:52 +02:00
mod	module: Add module name to modinfo	2017-05-23 14:08:31 -07:00
package	Kbuild misc updates for 4.12	2017-05-10 20:41:43 -07:00
selinux	doc: ReSTify SELinux.txt	2017-05-18 10:31:30 -06:00
tracing	…
.gitignore	Docs: clean up some DocBook loose ends	2017-06-23 14:17:38 -06:00
Kbuild.include	kbuild: Add __cc-option macro	2017-06-25 12:47:55 +09:00
Lindent	scripts/Lindent: clean up and optimize	2017-02-22 16:41:26 -08:00
Makefile	Docs: clean up some DocBook loose ends	2017-06-23 14:17:38 -06:00
Makefile.asm-generic	kbuild: replace genhdr-y with generated-y	2017-06-22 08:55:21 +09:00
Makefile.build	x86/unwind: Add the ORC unwinder	2017-07-26 13:18:20 +02:00
Makefile.clean	…
Makefile.dtbinst	kbuild: dtbinst: remove unnecessary __dtbs_install_prep target	2017-05-08 07:26:06 +09:00
Makefile.extrawarn	kbuild: drop -Wno-unknown-warning-option from clang options	2017-04-23 16:09:15 +09:00
Makefile.fwinst	…
Makefile.gcc-plugins	gcc-plugins: Add the randstruct plugin	2017-06-22 16:15:45 -07:00
Makefile.headersinst	kbuild: remove wrapper files handling from Makefile.headersinst	2017-07-11 21:33:54 +09:00
Makefile.help	…
Makefile.host	kbuild: Add __cc-option macro	2017-06-25 12:47:55 +09:00
Makefile.kasan	…
Makefile.lib	devicetree: Move include prefixes from arch to separate directory	2017-05-18 23:55:48 -07:00
Makefile.modbuiltin	…
Makefile.modinst	…
Makefile.modpost	…
Makefile.modsign	…
Makefile.ubsan	…
adjust_autoksyms.sh	…
asn1_compiler.c	…
bloat-o-meter	…
bootgraph.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
check_00index.sh	…
check_extable.sh	…
checkincludes.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
checkkconfigsymbols.py	checkkconfigsymbols.py: support Kconfig's 'imply' statement	2017-02-03 11:49:06 +01:00
checkpatch.pl	checkpatch: improve the STORAGE_CLASS test	2017-07-12 16:26:04 -07:00
checkstack.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
checksyscalls.sh	kbuild: speed up checksyscalls.sh	2017-06-10 01:15:36 +09:00
checkversion.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
cleanfile	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
cleanpatch	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
coccicheck	…
config	…
conmakehash.c	…
const_structs.checkpatch	…
decode_stacktrace.sh	…
decodecode	…
depmod.sh	…
diffconfig	…
export_report.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
extract-cert.c	…
extract-ikconfig	…
extract-module-sig.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
extract-sys-certs.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
extract-vmlinux	…
extract_xc3028.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
faddr2line	…
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_initramfs_list.sh	Kbuild misc updates for 4.13	2017-07-07 15:09:09 -07:00
get_dvb_firmware	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
get_maintainer.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
gfp-translate	…
headerdep.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
headers.sh	…
headers_check.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
headers_install.sh	…
insert-sys-cert.c	…
kallsyms.c	kbuild: modversions: add infrastructure for emitting relative CRCs	2017-02-03 08:28:25 -08:00
kernel-doc	Kbuild misc updates for 4.13	2017-07-07 15:09:09 -07:00
ld-version.sh	…
link-vmlinux.sh	kbuild: handle libs-y archives separately from built-in.o archives	2017-06-30 09:03:03 +09:00
makelst	…
markup_oops.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
mkcompile_h	scripts/mkcompile_h: Remove trailing spaces from compiler version	2017-06-19 22:48:15 +09:00
mkmakefile	…
mksysmap	…
mkuboot.sh	…
mkversion	…
module-common.lds	module: set .init_array alignment to 8	2017-03-13 09:40:28 -07:00
namespace.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
objdiff	scripts: objdiff: Ignore debug info when comparing	2017-03-11 11:13:38 +09:00
patch-kernel	…
pnmtologo.c	…
profile2linkerlist.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
prune-kernel	…
recordmcount.c	ftrace: Allow for function tracing to record init functions on boot up	2017-03-24 20:51:49 -04:00
recordmcount.h	…
recordmcount.pl	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
setlocalversion	…
show_delta	…
sign-file.c	sign-file: fix build error in sign-file.c with libressl	2017-02-10 12:43:47 +11:00
sortextable.c	…
sortextable.h	…
spelling.txt	scripts/spelling.txt: add a bunch more spelling mistakes	2017-07-06 16:24:30 -07:00
stackdelta	scripts: Switch to more portable Perl shebang	2017-05-14 11:20:44 +09:00
stackusage	…
tags.sh	tags: honor COMPILED_SOURCE with apart output directory	2017-06-06 08:42:34 +09:00
unifdef.c	…
ver_linux	ver_linux: Use /usr/bin/awk instead of /bin/awk	2017-04-08 18:03:42 +02:00
xen-hypercalls.sh	…
xz_wrap.sh	…