diff options
author | Jiri Kosina <jkosina@suse.cz> | 2012-04-08 21:48:52 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2012-04-08 21:48:52 +0200 |
commit | e75d660672ddd11704b7f0fdb8ff21968587b266 (patch) | |
tree | ccb9c107744c10b553c0373e450bee3971d16c00 /arch/arm/kernel/crunch.c | |
parent | 61282f37927143e45b03153f3e7b48d6b702147a (diff) | |
parent | 0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff) |
Merge branch 'master' into for-next
Merge with latest Linus' tree, as I have incoming patches
that fix code that is newer than current HEAD of for-next.
Conflicts:
drivers/net/ethernet/realtek/r8169.c
Diffstat (limited to 'arch/arm/kernel/crunch.c')
-rw-r--r-- | arch/arm/kernel/crunch.c | 88 |
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 25ef223ba7f..00000000000 --- 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); |