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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
commit | ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch) | |
tree | 816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/include/asm/pmu.h | |
parent | b1bf9368407ae7e89d8a005bb40beb70a41df539 (diff) | |
parent | 9f33be2c3a80bdc2cc08342dd77fac87652e0548 (diff) | |
download | op-kernel-dev-ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9.zip op-kernel-dev-ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9.tar.gz |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...
Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/include/asm/pmu.h')
-rw-r--r-- | arch/arm/include/asm/pmu.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h new file mode 100644 index 0000000..2829b9f --- /dev/null +++ b/arch/arm/include/asm/pmu.h @@ -0,0 +1,75 @@ +/* + * linux/arch/arm/include/asm/pmu.h + * + * Copyright (C) 2009 picoChip Designs Ltd, Jamie Iles + * + * 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. + * + */ + +#ifndef __ARM_PMU_H__ +#define __ARM_PMU_H__ + +#ifdef CONFIG_CPU_HAS_PMU + +struct pmu_irqs { + const int *irqs; + int num_irqs; +}; + +/** + * reserve_pmu() - reserve the hardware performance counters + * + * Reserve the hardware performance counters in the system for exclusive use. + * The 'struct pmu_irqs' for the system is returned on success, ERR_PTR() + * encoded error on failure. + */ +extern const struct pmu_irqs * +reserve_pmu(void); + +/** + * release_pmu() - Relinquish control of the performance counters + * + * Release the performance counters and allow someone else to use them. + * Callers must have disabled the counters and released IRQs before calling + * this. The 'struct pmu_irqs' returned from reserve_pmu() must be passed as + * a cookie. + */ +extern int +release_pmu(const struct pmu_irqs *irqs); + +/** + * init_pmu() - Initialise the PMU. + * + * Initialise the system ready for PMU enabling. This should typically set the + * IRQ affinity and nothing else. The users (oprofile/perf events etc) will do + * the actual hardware initialisation. + */ +extern int +init_pmu(void); + +#else /* CONFIG_CPU_HAS_PMU */ + +static inline const struct pmu_irqs * +reserve_pmu(void) +{ + return ERR_PTR(-ENODEV); +} + +static inline int +release_pmu(const struct pmu_irqs *irqs) +{ + return -ENODEV; +} + +static inline int +init_pmu(void) +{ + return -ENODEV; +} + +#endif /* CONFIG_CPU_HAS_PMU */ + +#endif /* __ARM_PMU_H__ */ |