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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/powerpc/kernel/pmc.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/pmc.c')
-rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/pmc.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/pmc.c b/ANDROID_3.4.5/arch/powerpc/kernel/pmc.c deleted file mode 100644 index 58eaa3dd..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/pmc.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * arch/powerpc/kernel/pmc.c - * - * Copyright (C) 2004 David Gibson, IBM Corporation. - * Includes code formerly from arch/ppc/kernel/perfmon.c: - * Author: Andy Fleming - * Copyright (c) 2004 Freescale Semiconductor, Inc - * - * 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. - */ - -#include <linux/errno.h> -#include <linux/bug.h> -#include <linux/spinlock.h> -#include <linux/export.h> - -#include <asm/processor.h> -#include <asm/cputable.h> -#include <asm/pmc.h> - -#ifndef MMCR0_PMAO -#define MMCR0_PMAO 0 -#endif - -static void dummy_perf(struct pt_regs *regs) -{ -#if defined(CONFIG_FSL_EMB_PERFMON) - mtpmr(PMRN_PMGC0, mfpmr(PMRN_PMGC0) & ~PMGC0_PMIE); -#elif defined(CONFIG_PPC64) || defined(CONFIG_6xx) - if (cur_cpu_spec->pmc_type == PPC_PMC_IBM) - mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~(MMCR0_PMXE|MMCR0_PMAO)); -#else - mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~MMCR0_PMXE); -#endif -} - - -static DEFINE_RAW_SPINLOCK(pmc_owner_lock); -static void *pmc_owner_caller; /* mostly for debugging */ -perf_irq_t perf_irq = dummy_perf; - -int reserve_pmc_hardware(perf_irq_t new_perf_irq) -{ - int err = 0; - - raw_spin_lock(&pmc_owner_lock); - - if (pmc_owner_caller) { - printk(KERN_WARNING "reserve_pmc_hardware: " - "PMC hardware busy (reserved by caller %p)\n", - pmc_owner_caller); - err = -EBUSY; - goto out; - } - - pmc_owner_caller = __builtin_return_address(0); - perf_irq = new_perf_irq ? new_perf_irq : dummy_perf; - - out: - raw_spin_unlock(&pmc_owner_lock); - return err; -} -EXPORT_SYMBOL_GPL(reserve_pmc_hardware); - -void release_pmc_hardware(void) -{ - raw_spin_lock(&pmc_owner_lock); - - WARN_ON(! pmc_owner_caller); - - pmc_owner_caller = NULL; - perf_irq = dummy_perf; - - raw_spin_unlock(&pmc_owner_lock); -} -EXPORT_SYMBOL_GPL(release_pmc_hardware); - -#ifdef CONFIG_PPC64 -void power4_enable_pmcs(void) -{ - unsigned long hid0; - - hid0 = mfspr(SPRN_HID0); - hid0 |= 1UL << (63 - 20); - - /* POWER4 requires the following sequence */ - asm volatile( - "sync\n" - "mtspr %1, %0\n" - "mfspr %0, %1\n" - "mfspr %0, %1\n" - "mfspr %0, %1\n" - "mfspr %0, %1\n" - "mfspr %0, %1\n" - "mfspr %0, %1\n" - "isync" : "=&r" (hid0) : "i" (SPRN_HID0), "0" (hid0): - "memory"); -} -#endif /* CONFIG_PPC64 */ |