arm64/lib: Add an helper to free memory allocated by the ASID allocator

Some users of the ASID allocator (e.g VMID) may require to free any
resource if the initialization fail. So introduce a function allows to
free any memory allocated by the ASID allocator.

Signed-off-by: Julien Grall <julien.grall@arm.com>
---
    Changes in v3:
        - Patch added

diff --git a/arch/arm64/include/asm/lib_asid.h b/arch/arm64/include/asm/lib_asid.h
index c18e9eca500ed60c2e5e1f40432443f1441e67ab..ff78865a6823cdd2f2d7a26e79eadb5f57bd165a 100644 (file)
--- a/arch/arm64/include/asm/lib_asid.h
+++ b/arch/arm64/include/asm/lib_asid.h
@@ -74,4 +74,6 @@ int asid_allocator_init(struct asid_info *info,
                        u32 bits, unsigned int asid_per_ctxt,
                        void (*flush_cpu_ctxt_cb)(void));
 
+void asid_allocator_free(struct asid_info *info);
+
 #endif

diff --git a/arch/arm64/lib/asid.c b/arch/arm64/lib/asid.c
index 0b3a99c4aed4ab74aff048d7d63b5ba3d4fd5cf0..d23f0df656c11038103f0e9dc09de34b9e5ea7b3 100644 (file)
--- a/arch/arm64/lib/asid.c
+++ b/arch/arm64/lib/asid.c
@@ -183,3 +183,8 @@ int asid_allocator_init(struct asid_info *info,
 
        return 0;
 }
+
+void asid_allocator_free(struct asid_info *info)
+{
+       kfree(info->map);
+}