Lai Jiangshan
b478b782e1
kallsyms, tracing: output more proper symbol name ...
Impact: bugfix, output more reliable symbol lookup result
Debug tools(dump_stack(), ftrace...) are like to print out symbols.
But it is always print out the first aliased symbol.(Aliased symbols
are symbols with the same address), and the first aliased symbol is
sometime not proper.
# echo function_graph > current_tracer
# cat trace
......
1) 1.923 us | select_nohz_load_balancer();
1) + 76.692 us | }
1) | default_idle() {
1) ==========> | __irqentry_text_start() {
1) 0.000 us | native_apic_mem_write();
1) | irq_enter() {
1) 0.000 us | idle_cpu();
1) | tick_check_idle() {
1) 0.000 us | tick_check_oneshot_broadcast();
1) | tick_nohz_stop_idle() {
......
It's very embarrassing, it ouputs "__irqentry_text_start()",
actually, it should output "smp_apic_timer_interrupt()".
(these two symbol are the same address, but "__irqentry_text_start"
is deemed to the first aliased symbol by scripts/kallsyms)
This patch puts symbols like "__irqentry_text_start" to the second
aliased symbols. And a more proper symbol name becomes the first.
Aliased symbols mostly come from linker script. The solution is
guessing "is this symbol defined in linker script", the symbols
defined in linker script will not become the first aliased symbol.
And if symbols are found to be equal in this "linker script provided"
criteria, symbols are sorted by the number of prefix underscores.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Paulo Marques <pmarques@grupopie.com>
LKML-Reference: <49BA06E2.7080807@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-14 09:55:04 +01:00
Update .gitignore files for generated targets
2008-10-20 11:24:31 -07:00
Revert "kbuild: strip generated symbols from *.ko"
2009-01-14 21:38:20 +01:00
kconfig: improve error messages for bad source statements
2009-01-02 20:43:22 +01:00
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
Merge branch 'linus' into x86/apic
2009-02-22 20:05:19 +01:00
kbuild: fix 'make rpm' when CONFIG_LOCALVERSION_AUTO=y and using SCM tree
2009-03-07 13:55:38 +01:00
[PATCH] rtmutex: Modify rtmutex-tester to test the setscheduler propagation
2006-06-27 17:32:47 -07:00
SELinux: add gitignore file for mdp script
2008-09-05 21:43:38 +10:00
tracing: add "power-tracer": C/P state tracer to help power optimization
2008-11-26 08:29:32 +01:00
ftrace: add a script to produce a hierarchical view of a function trace
2008-10-27 11:00:07 +01:00
fix modules_install via NFS
2009-01-07 21:44:20 +01:00
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bzip2/lzma: library support for gzip, bzip2 and lzma decompression
2009-01-04 15:53:34 -08:00
update the email address of Randy Dunlap
2006-01-03 13:37:51 +01:00
fix bloat-o-meter for ppc64
2007-12-17 19:28:17 -08:00
bootgraph: fix for use with dot symbols
2009-02-15 12:50:08 +01:00
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kbuild: script to check for undefined Kconfig symbols
2007-10-12 21:13:50 +02:00
checkpatch: version 0.28
2009-02-27 16:26:22 -08:00
sparc: Add checkstack support
2008-10-22 21:53:49 -07:00
scripts/checksyscalls.sh: fix for non-gnu sed
2008-10-29 22:02:08 +01:00
kbuild: introduce utsrelease.h
2006-07-03 23:30:54 +02:00
scripts: Make cleanfile/cleanpatch warn about long lines
2007-07-16 21:15:50 +02:00
scripts: Make cleanfile/cleanpatch warn about long lines
2007-07-16 21:15:50 +02:00
kbuild: print usage with no arguments in scripts/config
2009-01-14 21:40:49 +01:00
[PATCH] kbuild: signed char fixes for scripts
2005-07-27 22:27:08 +02:00
scripts: improve the decodecode script
2008-12-03 22:36:39 +01:00
kconfig: add diffconfig utility
2008-07-25 22:12:41 +02:00
kbuild: fix perl usage in export_report.pl
2007-10-12 21:13:50 +02:00
remove bashisms from scripts/extract-ikconfig
2008-12-03 21:32:02 +01:00
kbuild: fix buglet in gcc-version.sh
2008-01-28 23:14:36 +01:00
stackprotector: fix multi-word cross-builds
2009-02-11 12:17:29 +01:00
stackprotector: fix multi-word cross-builds
2009-02-11 12:17:29 +01:00
bzip2/lzma: don't leave empty files around on failure
2009-02-19 13:39:21 -08:00
kbuild: add headerdep used to detect inclusion cycles in header files
2008-12-18 20:18:04 +01:00
kbuild: prepare headers_* for arch/$ARCH/include
2008-07-25 22:12:33 +02:00
kbuild: drop check for CONFIG_ in headers_check
2009-01-31 00:36:15 +01:00
kbuild: in headers_install autoconvert asm/inline/volatile to __xxx__
2009-01-02 20:43:24 +01:00
fix modules_install via NFS
2009-01-07 21:44:20 +01:00
kallsyms, tracing: output more proper symbol name
2009-03-14 09:55:04 +01:00
kbuild: use KECHO convenience echo
2008-12-03 21:32:01 +01:00
kernel-doc: fix syscall wrapper processing
2009-02-11 14:25:36 -08:00
scripts/Lindent: support gnu indent v2.2.10
2008-04-29 08:06:04 -07:00
fix modules_install via NFS
2009-01-07 21:44:20 +01:00
Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core
2009-02-03 06:25:38 +01:00
kbuild: fix some minor typoes
2008-04-25 20:18:48 +02:00
firmware: silence __fw_modbuild and __fw_modinst 'Nothing to be done' messages
2008-08-02 07:52:29 +01:00
kbuild: install all headers when arch is changed
2008-07-25 22:12:18 +02:00
kbuild: fix some minor typoes
2008-04-25 20:18:48 +02:00
bzip2/lzma: handle failures from bzip2 and lzma correctly
2009-01-04 15:53:35 -08:00
Revert "kbuild: strip generated symbols from *.ko"
2009-01-14 21:38:20 +01:00
kbuild: fix KBUILD_EXTRA_SYMBOLS
2008-10-29 22:02:09 +01:00
kbuild: introduce ccflags-y, asflags-y and ldflags-y
2007-10-15 22:25:06 +02:00
scripts: add x86 64 bit support to the markup_oops.pl script
2009-02-15 12:50:10 +01:00
kbuild: kill output in silent mode of mkcompile_h
2008-12-03 21:32:00 +01:00
kbuild: teach mkmakfile to be silent
2008-12-03 21:32:02 +01:00
Revert "kbuild: strip generated symbols from *.ko"
2009-01-14 21:38:20 +01:00
kbuild/mkuboot.sh: allow spaces in CROSS_COMPILE
2007-05-02 20:58:10 +02:00
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
x86: fixup the x86 namespace change in scripts/namespace.pl
2007-10-11 17:56:02 +02:00
bugfix for scripts/patch-kernel in 2.6 sublevel stepping
2008-08-06 22:11:33 +02:00
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
[PATCH] x86_64: Basic reorder infrastructure
2006-03-25 09:10:56 -08:00
ftrace: test for running of recordmcount.pl twice on an object
2009-01-18 20:15:26 +01:00
kbuild,setlocalversion: shorten the make time when using svn
2009-02-15 12:50:07 +01:00
kbuild: fix mode of checkstack.pl and other files.
2006-04-11 13:37:07 +02:00
kbuild: add sys_* entries for syscalls in tags
2009-02-15 12:50:09 +01:00
kbuild: fix C libary confusion in unifdef.c due to getline()
2009-03-07 13:31:29 +01:00
kbuild: scripts/ver_linux: don't set PATH
2008-07-31 23:36:54 +02:00
b478b782e1