tools lib traceevent: Add plugin for tlb_flush (3e14b100) · Commits · 戴 / test

tools/lib/traceevent/plugins/Build

+1 −0

Original line number	Diff line number	Diff line
		@@ -8,3 +8,4 @@ plugin_function-y += plugin_function.o
		plugin_xen-y += plugin_xen.o
		plugin_scsi-y += plugin_scsi.o
		plugin_cfg80211-y += plugin_cfg80211.o
		plugin_tlb-y += plugin_tlb.o
		No newline at end of file

tools/lib/traceevent/plugins/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,7 @@ PLUGINS += plugin_function.so
		PLUGINS += plugin_xen.so
		PLUGINS += plugin_scsi.so
		PLUGINS += plugin_cfg80211.so
		PLUGINS += plugin_tlb.so

		PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS))
		PLUGINS_IN := $(PLUGINS:.so=-in.o)

tools/lib/traceevent/plugins/plugin_tlb.c

0 → 100644

+81 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2015 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
		*
		* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of the GNU Lesser General Public
		* License as published by the Free Software Foundation;
		* version 2.1 of the License (not later!)
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU Lesser General Public License for more details.
		*
		* You should have received a copy of the GNU Lesser General Public
		* License along with this program; if not, see <http://www.gnu.org/licenses>
		*
		* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		*/
		#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);
		}

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