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79406cd789
linux/tools/perf/util
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Arnaldo Carvalho de Melo 79406cd789 perf symbols: Allow lookups by symbol name too 
Configurable via symbol_conf.sort_by_name, so that the cost of an
extra rb_node on all 'struct symbol' instances is not paid by tools
that only want to decode addresses.

How to use it:

	symbol_conf.sort_by_name = true;
	symbol_init(&symbol_conf);

	struct map *map = map_groups__find_by_name(kmaps, MAP__VARIABLE, "[kernel.kallsyms]");

	if (map == NULL) {
		pr_err("couldn't find map!\n");
		kernel_maps__fprintf(stdout);
	} else {
		struct symbol *sym = map__find_symbol_by_name(map, sym_filter, NULL);
		if (sym == NULL)
			pr_err("couldn't find symbol %s!\n", sym_filter);
		else
			pr_info("symbol %s: %#Lx-%#Lx \n", sym_filter, sym->start, sym->end);
	}

Looking over the vmlinux/kallsyms is common enough that I'll add a
variable to the upcoming struct perf_session to avoid the need to
use map_groups__find_by_name to get the main vmlinux/kallsyms map.

The above example looks on the 'variable' symtab, but it is just
like that for the functions one.

Also the sort operation is done when we first use
map__find_symbol_by_name, in a lazy way.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260564622-12392-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-12 07:42:11 +01:00
..
include perf symbols: Simplify symbol machinery setup 2009-11-24 16:37:02 +01:00
abspath.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
alias.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
cache.h perf tools: Do not manually count string lengths 2009-10-13 11:55:31 +02:00
callchain.c perf tools: Unify debug messages mechanisms 2009-10-23 08:22:47 +02:00
callchain.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
color.c perf tools: Librarize trace_event() helper 2009-08-16 23:06:45 +02:00
color.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
config.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
ctype.c perf tools: Move graph_line and graph_dotted_line from top 2009-11-23 21:55:20 +01:00
data_map.c perf symbols: perf_header__read_build_ids() offset'n'size should be u64 2009-12-10 08:30:29 +01:00
data_map.h perf symbols: perf_header__read_build_ids() offset'n'size should be u64 2009-12-10 08:30:29 +01:00
debug.c perf tools: Unify debug messages mechanisms 2009-10-23 08:22:47 +02:00
debug.h perf tools: Debug.h needs to include event.h for event_t 2009-11-16 22:05:50 +01:00
debugfs.c perf tools: Add debugfs utility routines for perf 2009-11-08 18:01:34 +01:00
debugfs.h perf tools: Add debugfs utility routines for perf 2009-11-08 18:01:34 +01:00
environment.c
event.c perf symbols: Rename kthreads to kmaps, using another abstraction for it 2009-12-12 07:42:09 +01:00
event.h perf symbols: Allow lookups by symbol name too 2009-12-12 07:42:11 +01:00
exec_cmd.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
exec_cmd.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
generate-cmdlist.sh
header.c perf_event: Fix __dsos__write_buildid_table() 2009-12-07 06:26:24 +01:00
header.h perf tools: Eliminate some more die() uses in library functions 2009-11-19 18:47:17 +01:00
help.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
help.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
hist.c perf tools: Consolidate symbol resolving across all tools 2009-11-27 20:22:02 +01:00
hist.h perf tools: Consolidate symbol resolving across all tools 2009-11-27 20:22:02 +01:00
levenshtein.c
levenshtein.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
map.c perf symbols: Allow lookups by symbol name too 2009-12-12 07:42:11 +01:00
pager.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
parse-events.c perf tools: Optimize parse_subsystem_tracepoint_event() 2009-12-07 08:09:29 +01:00
parse-events.h perf trace: Add filter Suppport 2009-10-15 11:35:23 +02:00
parse-options.c perf tools: Align long options which have no short forms 2009-12-10 08:30:28 +01:00
parse-options.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
path.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
PERF-VERSION-GEN perf tools: Bump version to 0.0.2 2009-10-16 10:34:28 +02:00
probe-event.c perf tools: Correct size given to memset 2009-12-10 08:30:26 +01:00
probe-event.h perf probe: Support --del option 2009-12-09 07:26:53 +01:00
probe-finder.c perf probe: Fix strtailcmp() to compare s1and s2[0] 2009-12-07 18:33:20 +01:00
probe-finder.h perf/probes: Support function entry relative line number 2009-10-29 08:47:49 +01:00
quote.c perf: Fix read buffer overflow 2009-08-04 11:09:56 +02:00
quote.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
run-command.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
run-command.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
sigchain.c
sigchain.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
sort.c perf tools: Bind callchains to the first sort dimension column 2009-10-23 07:55:18 +02:00
sort.h perf tools: Bind callchains to the first sort dimension column 2009-10-23 07:55:18 +02:00
strbuf.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
strbuf.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
string.c perf tools: Fix _GNU_SOURCE macro related strndup() build error 2009-12-02 09:24:56 +01:00
string.h perf probe: Add argv_split() from lib/argv_split.c 2009-12-01 08:20:02 +01:00
strlist.c strlist: Introduce strlist__entry and strlist__nr_entries methods 2009-07-11 19:20:25 +02:00
strlist.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
svghelper.c perf timechart: Improve the visual appearance of scheduler delays 2009-10-20 03:39:21 +02:00
svghelper.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
symbol.c perf symbols: Allow lookups by symbol name too 2009-12-12 07:42:11 +01:00
symbol.h perf symbols: Allow lookups by symbol name too 2009-12-12 07:42:11 +01:00
thread.c perf symbols: Add missing "Variables" entry to map_type__name 2009-12-12 07:42:10 +01:00
thread.h perf symbols: Allow lookups by symbol name too 2009-12-12 07:42:11 +01:00
trace-event-info.c perf trace: Read_tracing_data should die() another day 2009-11-21 17:45:59 +01:00
trace-event-parse.c perf tools: Correct size given to memset 2009-12-10 08:30:26 +01:00
trace-event-perl.c perf trace/scripting: Don't display 'scripting unsupported' msg unnecessarily 2009-12-07 08:05:07 +01:00
trace-event-perl.h perf trace/scripting: Fix compile error when libperl not installed 2009-12-07 06:31:37 +01:00
trace-event-read.c perf tools: Misc small fixes 2009-12-06 18:15:02 +01:00
trace-event.h perf trace: Add interface to access perf data from Perl handlers 2009-11-28 10:04:27 +01:00
types.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
usage.c perf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available 2009-06-07 17:31:52 +02:00
util.h perf tools: Remove unused wrapper routines 2009-11-24 16:37:03 +01:00
values.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
values.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
wrapper.c perf tools: Remove unused wrapper routines 2009-11-24 16:37:03 +01:00