From 087958a17658dcd92cdc9292e6ce4319a25198fb Mon Sep 17 00:00:00 2001 From: Yash Shah Date: Thu, 20 Feb 2020 10:45:18 +0530 Subject: riscv: cacheinfo: Implement cache_get_priv_group with a generic ops structure Implement cache_get_priv_group() that will make use of a generic ops structure to return a private attribute group for custom cache info. Using riscv_set_cacheinfo_ops() users can hook their own custom function to return the private attribute group for cacheinfo. In future we can add more ops to this generic ops structure for SOC specific cacheinfo. Signed-off-by: Yash Shah Reviewed-by: Anup Patel Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/cacheinfo.h | 15 +++++++++++++++ arch/riscv/kernel/cacheinfo.c | 17 +++++++++++++++++ 2 files changed, 32 insertions(+) create mode 100644 arch/riscv/include/asm/cacheinfo.h (limited to 'arch/riscv') diff --git a/arch/riscv/include/asm/cacheinfo.h b/arch/riscv/include/asm/cacheinfo.h new file mode 100644 index 000000000000..5d9662e9aba8 --- /dev/null +++ b/arch/riscv/include/asm/cacheinfo.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _ASM_RISCV_CACHEINFO_H +#define _ASM_RISCV_CACHEINFO_H + +#include + +struct riscv_cacheinfo_ops { + const struct attribute_group * (*get_priv_group)(struct cacheinfo + *this_leaf); +}; + +void riscv_set_cacheinfo_ops(struct riscv_cacheinfo_ops *ops); + +#endif /* _ASM_RISCV_CACHEINFO_H */ diff --git a/arch/riscv/kernel/cacheinfo.c b/arch/riscv/kernel/cacheinfo.c index 4c90c07d8c39..bd0f122965c3 100644 --- a/arch/riscv/kernel/cacheinfo.c +++ b/arch/riscv/kernel/cacheinfo.c @@ -7,6 +7,23 @@ #include #include #include +#include + +static struct riscv_cacheinfo_ops *rv_cache_ops; + +void riscv_set_cacheinfo_ops(struct riscv_cacheinfo_ops *ops) +{ + rv_cache_ops = ops; +} +EXPORT_SYMBOL_GPL(riscv_set_cacheinfo_ops); + +const struct attribute_group * +cache_get_priv_group(struct cacheinfo *this_leaf) +{ + if (rv_cache_ops && rv_cache_ops->get_priv_group) + return rv_cache_ops->get_priv_group(this_leaf); + return NULL; +} static void ci_leaf_init(struct cacheinfo *this_leaf, struct device_node *node, -- cgit v1.2.3