Messages in this thread Patch in this message | | | From | Madhavan Srinivasan <> | Subject | [PATCH v4 1/7] powerpc/powernv: Data structure and macros definition | Date | Wed, 8 Jul 2015 18:31:40 +0530 |
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Create new header file "nest-pmu.h" to add the data structures and macros needed for the nest pmu support.
Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Stephane Eranian <eranian@google.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> --- arch/powerpc/perf/nest-pmu.h | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 arch/powerpc/perf/nest-pmu.h
diff --git a/arch/powerpc/perf/nest-pmu.h b/arch/powerpc/perf/nest-pmu.h new file mode 100644 index 0000000..ecb5d26 --- /dev/null +++ b/arch/powerpc/perf/nest-pmu.h @@ -0,0 +1,53 @@ +/* + * Nest Performance Monitor counter support for POWER8 processors. + * + * Copyright (C) 2015 Madhavan Srinivasan, IBM Corporation. + * + * 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/perf_event.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/io.h> +#include <asm/opal.h> + +#define P8_NEST_MAX_CHIPS 32 +#define P8_NEST_MAX_PMUS 32 +#define P8_NEST_MAX_PMU_NAME_LEN 256 +#define P8_NEST_MAX_EVENTS_SUPPORTED 256 +#define P8_NEST_ENGINE_START 1 +#define P8_NEST_ENGINE_STOP 0 + +/* + * Structure to hold per chip specific memory address + * information for nest pmus. Nest Counter data are exported + * in per-chip reserved memory region by the PORE Engine. + */ +struct perchip_nest_info { + uint32_t chip_id; + uint64_t pbase; + uint64_t vbase; + uint32_t size; +}; + +/* + * Place holder for nest pmu events and values. + */ +struct nest_ima_events { + const char *ev_name; + const char *ev_value; +}; + +/* + * Device tree parser code detects nest pmu support and + * registers new nest pmus. This structure will + * hold the pmu functions and attrs for each nest pmu and + * will be referenced at the time of pmu registration. + */ +struct nest_pmu { + struct pmu pmu; + const struct attribute_group *attr_groups[4]; +}; -- 1.9.1
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