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-rw-r--r--arch/riscv/include/asm/hwprobe.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/hwprobe.h b/arch/riscv/include/asm/hwprobe.h
index 5c48f48e79..630507dff5 100644
--- a/arch/riscv/include/asm/hwprobe.h
+++ b/arch/riscv/include/asm/hwprobe.h
@@ -15,4 +15,28 @@ static inline bool riscv_hwprobe_key_is_valid(__s64 key)
return key >= 0 && key <= RISCV_HWPROBE_MAX_KEY;
}
+static inline bool hwprobe_key_is_bitmask(__s64 key)
+{
+ switch (key) {
+ case RISCV_HWPROBE_KEY_BASE_BEHAVIOR:
+ case RISCV_HWPROBE_KEY_IMA_EXT_0:
+ case RISCV_HWPROBE_KEY_CPUPERF_0:
+ return true;
+ }
+
+ return false;
+}
+
+static inline bool riscv_hwprobe_pair_cmp(struct riscv_hwprobe *pair,
+ struct riscv_hwprobe *other_pair)
+{
+ if (pair->key != other_pair->key)
+ return false;
+
+ if (hwprobe_key_is_bitmask(pair->key))
+ return (pair->value & other_pair->value) == other_pair->value;
+
+ return pair->value == other_pair->value;
+}
+
#endif