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Date: Mon, 1 Jun 2020 10:24:00 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Leo Yan <leo.yan@...aro.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Jiri Olsa <jolsa@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Will Deacon <will@...nel.org>,
James Clark <james.clark@....com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Andi Kleen <ak@...ux.intel.com>,
Jin Yao <yao.jin@...ux.intel.com>,
Ian Rogers <irogers@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Al Grant <al.grant@....com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Mike Leach <mike.leach@...aro.org>
Cc: Tan Xiaojun <tanxiaojun@...wei.com>
Subject: Re: [PATCH v8 2/3] perf auxtrace: Add four itrace options
On 30/05/20 3:24 pm, Leo Yan wrote:
> From: Tan Xiaojun <tanxiaojun@...wei.com>
>
> This patch is to add four options to synthesize events which are
> described as below:
>
> 'f': synthesize first level cache events
> 'm': synthesize last level cache events
> 't': synthesize TLB events
> 'a': synthesize remote access events
>
> This four options will be used by ARM SPE as their first consumer.
>
> Signed-off-by: Tan Xiaojun <tanxiaojun@...wei.com>
> Signed-off-by: James Clark <james.clark@....com>
> Signed-off-by: Leo Yan <leo.yan@...aro.org>
> Tested-by: James Clark <james.clark@....com>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
> tools/perf/Documentation/itrace.txt | 6 +++++-
> tools/perf/util/auxtrace.c | 17 +++++++++++++++++
> tools/perf/util/auxtrace.h | 15 ++++++++++++++-
> 3 files changed, 36 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt
> index 271484754fee..e817179c5027 100644
> --- a/tools/perf/Documentation/itrace.txt
> +++ b/tools/perf/Documentation/itrace.txt
> @@ -1,5 +1,5 @@
> i synthesize instructions events
> - b synthesize branches events
> + b synthesize branches events (branch misses for Arm SPE)
> c synthesize branches events (calls only)
> r synthesize branches events (returns only)
> x synthesize transactions events
> @@ -9,6 +9,10 @@
> of aux-output (refer to perf record)
> e synthesize error events
> d create a debug log
> + f synthesize first level cache events
> + m synthesize last level cache events
> + t synthesize TLB events
> + a synthesize remote access events
> g synthesize a call chain (use with i or x)
> G synthesize a call chain on existing event records
> l synthesize last branch entries (use with i or x)
> diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
> index 8cf7d405ee67..fe76a056a179 100644
> --- a/tools/perf/util/auxtrace.c
> +++ b/tools/perf/util/auxtrace.c
> @@ -1331,6 +1331,11 @@ void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts,
> synth_opts->pwr_events = true;
> synth_opts->other_events = true;
> synth_opts->errors = true;
> + synth_opts->flc = true;
> + synth_opts->llc = true;
> + synth_opts->tlb = true;
> + synth_opts->remote_access = true;
> +
> if (no_sample) {
> synth_opts->period_type = PERF_ITRACE_PERIOD_INSTRUCTIONS;
> synth_opts->period = 1;
> @@ -1491,6 +1496,18 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
> goto out_err;
> p = endptr;
> break;
> + case 'f':
> + synth_opts->flc = true;
> + break;
> + case 'm':
> + synth_opts->llc = true;
> + break;
> + case 't':
> + synth_opts->tlb = true;
> + break;
> + case 'a':
> + synth_opts->remote_access = true;
> + break;
> case ' ':
> case ',':
> break;
> diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
> index 0220a2e86c16..142ccf7d34df 100644
> --- a/tools/perf/util/auxtrace.h
> +++ b/tools/perf/util/auxtrace.h
> @@ -63,6 +63,7 @@ enum itrace_period_type {
> * because 'perf inject' will write it out
> * @instructions: whether to synthesize 'instructions' events
> * @branches: whether to synthesize 'branches' events
> + * (branch misses only for Arm SPE)
> * @transactions: whether to synthesize events for transactions
> * @ptwrites: whether to synthesize events for ptwrites
> * @pwr_events: whether to synthesize power events
> @@ -78,6 +79,10 @@ enum itrace_period_type {
> * @thread_stack: feed branches to the thread_stack
> * @last_branch: add branch context to 'instruction' events
> * @add_last_branch: add branch context to existing event records
> + * @flc: whether to synthesize first level cache events
> + * @llc: whether to synthesize last level cache events
> + * @tlb: whether to synthesize TLB events
> + * @remote_access: whether to synthesize remote access events
> * @callchain_sz: maximum callchain size
> * @last_branch_sz: branch context size
> * @period: 'instructions' events period
> @@ -107,6 +112,10 @@ struct itrace_synth_opts {
> bool thread_stack;
> bool last_branch;
> bool add_last_branch;
> + bool flc;
> + bool llc;
> + bool tlb;
> + bool remote_access;
> unsigned int callchain_sz;
> unsigned int last_branch_sz;
> unsigned long long period;
> @@ -596,7 +605,7 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session,
>
> #define ITRACE_HELP \
> " i: synthesize instructions events\n" \
> -" b: synthesize branches events\n" \
> +" b: synthesize branches events (branch misses for Arm SPE)\n" \
> " c: synthesize branches events (calls only)\n" \
> " r: synthesize branches events (returns only)\n" \
> " x: synthesize transactions events\n" \
> @@ -604,6 +613,10 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session,
> " p: synthesize power events\n" \
> " e: synthesize error events\n" \
> " d: create a debug log\n" \
> +" f: synthesize first level cache events\n" \
> +" m: synthesize last level cache events\n" \
> +" t: synthesize TLB events\n" \
> +" a: synthesize remote access events\n" \
> " g[len]: synthesize a call chain (use with i or x)\n" \
> " l[len]: synthesize last branch entries (use with i or x)\n" \
> " sNUMBER: skip initial number of events\n" \
>
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