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linux/tools/perf/util
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Frederic Weisbecker b0efe213f8 perf tools: callchain: Fix spurious 'perf report' warnings: ignore empty callchains 
When the callchain tree comes to insert an empty backtrace, it
raises a spurious warning about the fact we are inserting an
empty. This is spurious because the radix tree assumes it did
something wrong to reach this state. But it didn't, we just met
an empty callchain that has to be ignored.

This happens occasionally with certain types of call-chain
recordings. If it happens it's a big nuisance as perf report
output starts with thousands of warning lines.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1249690585-9145-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-08-09 12:54:41 +02:00
..
include perf report: Adjust column width to the values sampled 2009-07-11 10:24:11 +02:00
abspath.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +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_counter: Detect debugfs location 2009-07-22 18:05:57 +02:00
callchain.c perf tools: callchain: Fix spurious 'perf report' warnings: ignore empty callchains 2009-08-09 12:54:41 +02:00
callchain.h perf tools: Fix call-chain cumul hit based sub-total (fractal mode) 2009-08-09 12:54:33 +02:00
color.c perf_counter tools: Provide helper to print percents color 2009-07-02 21:38:37 +02:00
color.h perf_counter tools: Provide helper to print percents color 2009-07-02 21:38:37 +02:00
config.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
ctype.c perf_counter tools: Add and use isprint() 2009-06-18 09:46:00 +02:00
environment.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
exec_cmd.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
exec_cmd.h perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
generate-cmdlist.sh perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
header.c perf util: Fix do_read() to fail on EOF instead of busy-looping 2009-08-09 12:54:39 +02:00
header.h perf: avoid structure size confusion by using a fixed size 2009-07-22 18:05:57 +02:00
help.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
help.h perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
levenshtein.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
levenshtein.h perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
module.c perf_counter tools: Add infrastructure to support loading of kernel module symbols 2009-07-02 08:42:20 +02:00
module.h perf_counter tools: Add infrastructure to support loading of kernel module symbols 2009-07-02 08:42:20 +02:00
pager.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
parse-events.c perf list: Fix the output to not include tracepoints without an id 2009-08-09 12:54:38 +02:00
parse-events.h perf report: Fix per task mult-counter stat reporting 2009-08-09 12:54:35 +02:00
parse-options.c perf_counter tools: Add new OPT_CALLBACK_DEFAULT option 2009-07-02 20:47:14 +02:00
parse-options.h perf_counter tools: Add new OPT_CALLBACK_DEFAULT option 2009-07-02 20:47:14 +02:00
path.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
PERF-VERSION-GEN perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
quote.c perf: Fix read buffer overflow 2009-08-04 11:09:56 +02:00
quote.h perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
run-command.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
run-command.h perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
sigchain.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
sigchain.h perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +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_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
string.c perf_counter tools: Define and use our own u64, s64 etc. definitions 2009-06-19 18:25:47 +02:00
string.h perf_counter: Detect debugfs location 2009-07-22 18:05:57 +02:00
strlist.c strlist: Introduce strlist__entry and strlist__nr_entries methods 2009-07-11 19:20:25 +02:00
strlist.h strlist: Introduce strlist__entry and strlist__nr_entries methods 2009-07-11 19:20:25 +02:00
symbol.c perf report: Add debug help for the finding of symbol bugs - show the symtab origin (DSO, build-id, kernel, etc) 2009-08-09 12:54:36 +02:00
symbol.h perf report: Add debug help for the finding of symbol bugs - show the symtab origin (DSO, build-id, kernel, etc) 2009-08-09 12:54:36 +02:00
types.h perf_counter tools: Rework the file format 2009-06-25 21:39:04 +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_counter: Add tracepoint support to perf list, perf stat 2009-07-22 18:05:57 +02:00
wrapper.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00