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-rw-r--r--arch/arm/kernel/crunch.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/arch/arm/kernel/crunch.c b/arch/arm/kernel/crunch.c
deleted file mode 100644
index 25ef223..0000000
--- a/arch/arm/kernel/crunch.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * arch/arm/kernel/crunch.c
- * Cirrus MaverickCrunch context switching and handling
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <mach/ep93xx-regs.h>
-#include <asm/thread_notify.h>
-
-struct crunch_state *crunch_owner;
-
-void crunch_task_release(struct thread_info *thread)
-{
- local_irq_disable();
- if (crunch_owner == &thread->crunchstate)
- crunch_owner = NULL;
- local_irq_enable();
-}
-
-static int crunch_enabled(u32 devcfg)
-{
- return !!(devcfg & EP93XX_SYSCON_DEVCFG_CPENA);
-}
-
-static int crunch_do(struct notifier_block *self, unsigned long cmd, void *t)
-{
- struct thread_info *thread = (struct thread_info *)t;
- struct crunch_state *crunch_state;
- u32 devcfg;
-
- crunch_state = &thread->crunchstate;
-
- switch (cmd) {
- case THREAD_NOTIFY_FLUSH:
- memset(crunch_state, 0, sizeof(*crunch_state));
-
- /*
- * FALLTHROUGH: Ensure we don't try to overwrite our newly
- * initialised state information on the first fault.
- */
-
- case THREAD_NOTIFY_EXIT:
- crunch_task_release(thread);
- break;
-
- case THREAD_NOTIFY_SWITCH:
- devcfg = __raw_readl(EP93XX_SYSCON_DEVCFG);
- if (crunch_enabled(devcfg) || crunch_owner == crunch_state) {
- /*
- * We don't use ep93xx_syscon_swlocked_write() here
- * because we are on the context switch path and
- * preemption is already disabled.
- */
- devcfg ^= EP93XX_SYSCON_DEVCFG_CPENA;
- __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
- __raw_writel(devcfg, EP93XX_SYSCON_DEVCFG);
- }
- break;
- }
-
- return NOTIFY_DONE;
-}
-
-static struct notifier_block crunch_notifier_block = {
- .notifier_call = crunch_do,
-};
-
-static int __init crunch_init(void)
-{
- thread_register_notifier(&crunch_notifier_block);
- elf_hwcap |= HWCAP_CRUNCH;
-
- return 0;
-}
-
-late_initcall(crunch_init);