Adding upstream version 1:1.7.1.upstream/1%1.7.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/plugins/plugin_tlb.c b/plugins/plugin_tlb.c
new file mode 100644
index 0000000..43657fb
--- /dev/null
+++ b/plugins/plugin_tlb.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: LGPL-2.1
+/*
+ * Copyright (C) 2015 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "event-parse.h"
+
+enum tlb_flush_reason {
+	TLB_FLUSH_ON_TASK_SWITCH,
+	TLB_REMOTE_SHOOTDOWN,
+	TLB_LOCAL_SHOOTDOWN,
+	TLB_LOCAL_MM_SHOOTDOWN,
+	NR_TLB_FLUSH_REASONS,
+};
+
+static int tlb_flush_handler(struct trace_seq *s, struct tep_record *record,
+			     struct tep_event *event, void *context)
+{
+	unsigned long long val;
+
+	trace_seq_printf(s, "pages=");
+
+	tep_print_num_field(s, "%ld", event, "pages", record, 1);
+
+	if (tep_get_field_val(s, event, "reason", record, &val, 1) < 0)
+		return -1;
+
+	trace_seq_puts(s, " reason=");
+
+	switch (val) {
+	case TLB_FLUSH_ON_TASK_SWITCH:
+		trace_seq_puts(s, "flush on task switch");
+		break;
+	case TLB_REMOTE_SHOOTDOWN:
+		trace_seq_puts(s, "remote shootdown");
+		break;
+	case TLB_LOCAL_SHOOTDOWN:
+		trace_seq_puts(s, "local shootdown");
+		break;
+	case TLB_LOCAL_MM_SHOOTDOWN:
+		trace_seq_puts(s, "local mm shootdown");
+		break;
+	}
+
+	trace_seq_printf(s, " (%lld)", val);
+
+	return 0;
+}
+
+int TEP_PLUGIN_LOADER(struct tep_handle *tep)
+{
+	tep_register_event_handler(tep, -1, "tlb", "tlb_flush",
+				   tlb_flush_handler, NULL);
+
+	return 0;
+}
+
+void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
+{
+	tep_unregister_event_handler(tep, -1,
+				     "tlb", "tlb_flush",
+				     tlb_flush_handler, NULL);
+}