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Heiko Carstens e6d60b368b s390/ftrace: hotpatch support for function tracing 
Make use of gcc's hotpatch support to generate better code for ftrace
function tracing.
The generated code now contains only a six byte nop in each function
prologue instead of a 24 byte code block which will be runtime patched to
support function tracing.
With the new code generation the runtime overhead for supporting function
tracing is close to zero, while the original code did show a significant
performance impact.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-01-29 09:19:25 +01:00
..
basic kernel: build bin2c based on config option CONFIG_BUILD_BIN2C 2014-08-08 15:57:32 -07:00
coccinelle coccinelle: api: add spatch to prevent unnecessary .owner 2014-11-06 15:16:02 -08:00
dtc kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
genksyms genksyms: fix typeof() handling 2014-04-03 16:20:52 -07:00
kconfig Replace mentions of "list_struct" to "list_head" 2014-11-20 14:45:15 +01:00
ksymoops
mod arm64 updates for 3.18: 2014-10-08 05:34:24 -04:00
package Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:27:48 +02:00
rt-tester kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
selinux kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
tracing kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
.gitignore bin2c: move bin2c in scripts/basic 2014-08-08 15:57:32 -07:00
analyze_suspend.py PM / tools: analyze_suspend.py: update to v3.0 2014-08-09 02:47:58 +02:00
asn1_compiler.c X.509: remove possible code fragility: enumeration values not handled 2013-09-25 17:17:01 +01:00
bloat-o-meter bloat-o-meter: Ignore syscall aliases SyS_ and compat_SyS_ 2014-08-23 13:08:48 -07:00
bootgraph.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
checkincludes.pl
checkkconfigsymbols.py checkkconfigsymbols.py: improve detection of defects 2014-11-08 20:50:43 -08:00
checkpatch.pl checkpatch: add ability to --fix (coalesce) string fragments on multiple lines 2014-12-10 17:41:12 -08:00
checkstack.pl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-07 21:16:26 -04:00
checksyscalls.sh scripts/checksyscalls.sh: Make renameat optional 2014-05-20 10:59:38 +02:00
checkversion.pl
cleanfile
cleanpatch
coccicheck Coccinelle: Update information about the minimal version required 2013-07-03 22:58:20 +02:00
config kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
conmakehash.c kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
decode_stacktrace.sh decode_stacktrace: make stack dump output useful again 2014-06-10 15:29:43 -07:00
decodecode scripts/decodecode: make faulting insn ptr more robust 2013-04-29 15:54:27 -07:00
depmod.sh depmod: pass -P $CONFIG_SYMBOL_PREFIX 2013-02-22 11:52:31 +01:00
diffconfig diffconfig: Update script to support python versions 2.5 through 3.3 2013-09-01 21:24:51 +02:00
docproc.c kbuild: trivial - use tabs for code indent where possible 2014-06-10 14:00:53 +02:00
export_report.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
extract-ikconfig
extract-vmlinux
gcc-goto.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-ld kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-version.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_32-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_64-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gen_initramfs_list.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
get_maintainer.pl scripts: Teach get_maintainer.pl about the new "R:" tag 2014-07-08 14:47:17 -07:00
gfp-translate
headerdep.pl
headers_check.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
headers_install.sh Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:22:26 +02:00
headers.sh kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
kallsyms.c aarch64: filter $x from kallsyms 2014-10-02 17:01:51 +01:00
Kbuild.include dts, kbuild: Factor out dtbs install rules to Makefile.dtbinst 2014-10-21 18:06:58 +02:00
kernel-doc scripts/kernel-doc: don't eat struct members with __aligned 2014-12-10 17:41:02 -08:00
ld-version.sh Kbuild, lto: add ld-version and ld-ifversion macros 2014-02-13 20:25:00 -08:00
Lindent
link-vmlinux.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
Makefile bin2c: move bin2c in scripts/basic 2014-08-08 15:57:32 -07:00
Makefile.asm-generic kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
Makefile.build ftrace: allow architectures to specify ftrace compile options 2015-01-29 09:19:19 +01:00
Makefile.clean kbuild: simplify build, clean, modbuiltin shorthands 2014-10-02 15:12:41 +02:00
Makefile.dtbinst dts, kbuild: Implement support for dtb vendor subdirs 2014-10-21 18:06:59 +02:00
Makefile.extrawarn kbuild, LLVMLinux: Supress warnings unless W=1-3 2014-08-05 15:40:01 +02:00
Makefile.fwinst kbuild: remove obj-n and lib-n handling 2014-10-02 13:55:02 +02:00
Makefile.headersinst kbuild: fix make headers_install when path is too long 2013-05-17 22:10:35 +02:00
Makefile.help
Makefile.host kbuild: handle the dependency of multi-objs hostprogs appropriately 2014-08-19 10:26:20 +02:00
Makefile.lib dts, kbuild: Factor out dtbs install rules to Makefile.dtbinst 2014-10-21 18:06:58 +02:00
Makefile.modbuiltin
Makefile.modinst kbuild: handle module compression while running 'make modules_install'. 2014-08-27 21:54:12 +09:30
Makefile.modpost modpost: Optionally ignore secondary errors seen if a single module build fails 2013-09-23 15:45:03 +09:30
Makefile.modsign modsign: lookup lines ending in .ko in .mod files 2014-08-27 21:54:11 +09:30
makelst
markup_oops.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mkcompile_h kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
mkmakefile kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mksysmap kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mkuboot.sh
mkversion
module-common.lds
namespace.pl
objdiff scripts: objdiff: support directories for the augument of record command 2014-06-10 14:59:33 +02:00
patch-kernel kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
pnmtologo.c kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
profile2linkerlist.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
recordmcount.c s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
recordmcount.h recordmcount/MIPS: Fix possible incorrect mcount_loc table entries in modules 2014-06-26 10:48:19 +01:00
recordmcount.pl s390/ftrace: hotpatch support for function tracing 2015-01-29 09:19:25 +01:00
setlocalversion Fix detectition of kernel git repository in setlocalversion script [take #2] 2014-01-03 14:48:42 +01:00
show_delta kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
sign-file treewide: fix errors in printk 2014-09-01 11:18:25 +02:00
sortextable.c xtensa: enable sorting extable at build time 2014-04-02 01:35:50 +04:00
sortextable.h scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized 2014-10-14 02:18:23 +02:00
spelling.txt checkpatch: look for common misspellings 2014-10-14 02:18:15 +02:00
tags.sh Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:27:48 +02:00
unifdef.c
ver_linux
xz_wrap.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00