linux-kernel - [PATCH v1 09/15] perf record: introduce thread specific objects for trace streaming

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Date:   Mon, 12 Oct 2020 12:02:37 +0300
From:   Alexey Budankov <alexey.budankov@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Cc:     Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 09/15] perf record: introduce thread specific objects for
 trace streaming


Introduce thread local data object and its array to be used for
threaded trace streaming.

Signed-off-by: Alexey Budankov <alexey.budankov@...ux.intel.com>
---
 tools/perf/builtin-record.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index ba26d75c51d6..8e512096a060 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -85,11 +85,29 @@ struct switch_output {
 	int		 cur_file;
 };
 
+struct thread_data {
+	pid_t		   tid;
+	struct {
+		int	   msg[2];
+		int	   ack[2];
+	} comm;
+	struct fdarray	   pollfd;
+	int		   ctlfd_pos;
+	struct mmap	   *maps;
+	int		   nr_mmaps;
+	struct record	   *rec;
+	unsigned long long samples;
+	unsigned long	   waking;
+	u64		   bytes_written;
+};
+
 struct record {
 	struct perf_tool	tool;
 	struct record_opts	opts;
 	u64			bytes_written;
 	struct perf_data	data;
+	struct thread_data	*thread_data;
+	int			nr_thread_data;
 	struct auxtrace_record	*itr;
 	struct evlist	*evlist;
 	struct perf_session	*session;
-- 
2.24.1