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perf auxtrace: Add optional log flags to the itrace 'd' option

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Allow the 'd' option to be followed by flags which will affect what debug
messages will or will not be reported. Each flag must be preceded by either
'+' or '-'. The flags are:
	a	all perf events

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200710151104.15137-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2020-07-10 18:10:59 +03:00 committed by Arnaldo Carvalho de Melo
parent 1d846aeb86
commit 935aac2d2d
3 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/perf/Documentation/itrace.txt
View File

@ -53,3 +53,8 @@
The flags are:
o overflow
l trace data lost
If supported, the 'd' option may be followed by flags which affect what
debug messages will or will not be logged. Each flag must be preceded
by either '+' or '-'. The flags are:
a all perf events

3
tools/perf/util/auxtrace.c
View File

@ -1483,6 +1483,9 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
break;
case 'd':
synth_opts->log = true;
if (get_flags(&p, &synth_opts->log_plus_flags,
&synth_opts->log_minus_flags))
goto out_err;
break;
case 'c':
synth_opts->branches = true;

10
tools/perf/util/auxtrace.h
View File

@ -58,6 +58,8 @@ enum itrace_period_type {
#define AUXTRACE_ERR_FLG_OVERFLOW (1 << ('o' - 'a'))
#define AUXTRACE_ERR_FLG_DATA_LOST (1 << ('l' - 'a'))
#define AUXTRACE_LOG_FLG_ALL_PERF_EVTS (1 << ('a' - 'a'))
/**
* struct itrace_synth_opts - AUX area tracing synthesis options.
* @set: indicates whether or not options have been set
@ -96,6 +98,8 @@ enum itrace_period_type {
* @range_num: number of time intervals to trace
* @error_plus_flags: flags to affect what errors are reported
* @error_minus_flags: flags to affect what errors are reported
* @log_plus_flags: flags to affect what is logged
* @log_minus_flags: flags to affect what is logged
*/
struct itrace_synth_opts {
bool set;
@ -131,6 +135,8 @@ struct itrace_synth_opts {
int range_num;
unsigned int error_plus_flags;
unsigned int error_minus_flags;
unsigned int log_plus_flags;
unsigned int log_minus_flags;
};
/**
@ -624,7 +630,9 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session,
" each flag must be preceded by + or -\n" \
" error flags are: o (overflow)\n" \
" l (data lost)\n" \
" d: create a debug log\n" \
" d[flags]: create a debug log\n" \
" each flag must be preceded by + or -\n" \
" log flags are: a (all perf events)\n" \
" f: synthesize first level cache events\n" \
" m: synthesize last level cache events\n" \
" t: synthesize TLB events\n" \