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From:   Yang Jihong <yangjihong1@huawei.com>
To:     <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
        <mark.rutland@arm.com>, <alexander.shishkin@linux.intel.com>,
        <jolsa@kernel.org>, <namhyung@kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-perf-users@vger.kernel.org>
CC:     <yangjihong1@huawei.com>
Subject: [RFC 07/13] perf kwork: Add irq report support
Date:   Mon, 13 Jun 2022 17:45:59 +0800
Message-ID: <20220613094605.208401-8-yangjihong1@huawei.com>
In-Reply-To: <20220613094605.208401-1-yangjihong1@huawei.com>
References: <20220613094605.208401-1-yangjihong1@huawei.com>
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Precedence: bulk

Implements irq kwork report function.

test case:

  # perf kwork rep

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    virtio0-requests:25       | 0000 |    429.202 ms |      7155 |      0.937 ms |    1906657.581035 s |    1906657.581973 s |
    eth0:10                   | 0002 |      0.136 ms |         5 |      0.045 ms |    1906656.302257 s |    1906656.302301 s |
   ---------------------------------------------------------------------------------------------------------------------------

  #
  # perf kwork rep -C 2

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    eth0:10                   | 0002 |      0.136 ms |         5 |      0.045 ms |    1906656.302257 s |    1906656.302301 s |
   ---------------------------------------------------------------------------------------------------------------------------

  # perf kwork rep -C 1,2

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    eth0:10                   | 0002 |      0.136 ms |         5 |      0.045 ms |    1906656.302257 s |    1906656.302301 s |
   ---------------------------------------------------------------------------------------------------------------------------

  # perf kwork rep -n eth0

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    eth0:10                   | 0002 |      0.136 ms |         5 |      0.045 ms |    1906656.302257 s |    1906656.302301 s |
   ---------------------------------------------------------------------------------------------------------------------------

  # perf kwork rep -S

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    virtio0-requests:25       | 0000 |    429.202 ms |      7155 |      0.937 ms |    1906657.581035 s |    1906657.581973 s |
    eth0:10                   | 0002 |      0.136 ms |         5 |      0.045 ms |    1906656.302257 s |    1906656.302301 s |
   ---------------------------------------------------------------------------------------------------------------------------
    Total count            :      7160
    Total runtime   (msec) :   429.338 (0.142% load average)
    Total time span (msec) :  3013.347
   ---------------------------------------------------------------------------------------------------------------------------

  # perf kwork rep --time 1906657,

    Kwork Name                | Cpu  | Total Runtime | Frequency | Max runtime   | Max runtime start   | Max runtime end     |
   ---------------------------------------------------------------------------------------------------------------------------
    virtio0-requests:25       | 0000 |    228.631 ms |      3855 |      0.937 ms |    1906657.581035 s |    1906657.581973 s |
    eth0:10                   | 0002 |      0.092 ms |         4 |      0.034 ms |    1906658.614010 s |    1906658.614043 s |
   ---------------------------------------------------------------------------------------------------------------------------

Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
---
 tools/perf/builtin-kwork.c | 62 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index ec199942150f..5741a8ac3e41 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -639,15 +639,73 @@ static int report_exit_event(struct perf_kwork *kwork,
 	return 0;
 }
 
+static struct kwork_class kwork_irq;
+static int process_irq_handler_entry_event(struct perf_tool *tool,
+					   struct evsel *evsel,
+					   struct perf_sample *sample,
+					   struct machine *machine)
+{
+	struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool);
+
+	if (kwork->tp_handler->entry_event)
+		return kwork->tp_handler->entry_event(kwork, &kwork_irq,
+						      evsel, sample, machine);
+	return 0;
+}
+
+static int process_irq_handler_exit_event(struct perf_tool *tool,
+					  struct evsel *evsel,
+					  struct perf_sample *sample,
+					  struct machine *machine)
+{
+	struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool);
+
+	if (kwork->tp_handler->exit_event)
+		return kwork->tp_handler->exit_event(kwork, &kwork_irq,
+						     evsel, sample, machine);
+	return 0;
+}
+
 const struct evsel_str_handler irq_tp_handlers[] = {
-	{ "irq:irq_handler_entry", NULL, },
-	{ "irq:irq_handler_exit",  NULL, },
+	{ "irq:irq_handler_entry", process_irq_handler_entry_event, },
+	{ "irq:irq_handler_exit",  process_irq_handler_exit_event, },
 };
 
+static int irq_class_init(struct kwork_class *class,
+			  struct perf_session *session)
+{
+	if (perf_session__set_tracepoints_handlers(session, irq_tp_handlers)) {
+		pr_debug("Failed to set irq tracepoints handlers\n");
+		return -1;
+	}
+
+	class->cluster_root = RB_ROOT_CACHED;
+	return 0;
+}
+
+static void irq_cluster_init(struct kwork_class *class,
+			     struct kwork_cluster *cluster,
+			     struct evsel *evsel,
+			     struct perf_sample *sample)
+{
+	cluster->class = class;
+	cluster->cpu = sample->cpu;
+	cluster->id = evsel__intval(evsel, sample, "irq");
+	cluster->name = evsel__strval(evsel, sample, "name");
+}
+
+static void irq_cluster_name(struct kwork_cluster *cluster, char *buf, int len)
+{
+	snprintf(buf, len, "%s:%" PRIu64 "", cluster->name, cluster->id);
+}
+
 static struct kwork_class kwork_irq = {
 	.name           = "irq",
 	.nr_tracepoints = 2,
 	.tp_handlers    = irq_tp_handlers,
+	.class_init     = irq_class_init,
+	.cluster_init   = irq_cluster_init,
+	.cluster_name   = irq_cluster_name,
 };
 
 const struct evsel_str_handler softirq_tp_handlers[] = {
-- 
2.30.GIT