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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/plat-versatile/sched-clock.c
Initial import
Diffstat (limited to 'arch/arm/plat-versatile/sched-clock.c')
-rw-r--r--arch/arm/plat-versatile/sched-clock.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/plat-versatile/sched-clock.c b/arch/arm/plat-versatile/sched-clock.c
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+++ b/arch/arm/plat-versatile/sched-clock.c
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+/*
+ * linux/arch/arm/plat-versatile/sched-clock.c
+ *
+ * Copyright (C) 1999 - 2003 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/sched_clock.h>
+
+#include <plat/sched_clock.h>
+
+static void __iomem *ctr;
+
+static u64 notrace versatile_read_sched_clock(void)
+{
+ if (ctr)
+ return readl(ctr);
+
+ return 0;
+}
+
+void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
+{
+ ctr = reg;
+ sched_clock_register(versatile_read_sched_clock, 32, rate);
+}