[PATCH v4 23/29] kselftest/arm64: move get_header()

[Joey Gouly]

Put this function in the header so that it can be used by other tests, without
needing to link to testcases.c.

This will be used by selftest/mm/protection_keys.c

Signed-off-by: Joey Gouly <joey.gouly at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will at kernel.org>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Shuah Khan <shuah at kernel.org>
Cc: Dave Hansen <dave.hansen at linux.intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
Reviewed-by: Mark Brown <broonie at kernel.org>
---
 .../arm64/signal/testcases/testcases.c        | 23 -----------------
 .../arm64/signal/testcases/testcases.h        | 25 +++++++++++++++++--
 2 files changed, 23 insertions(+), 25 deletions(-)

diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c
index 674b88cc8c39..e4331440fed0 100644
--- a/tools/testing/selftests/arm64/signal/testcases/testcases.c
+++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c
@@ -6,29 +6,6 @@
 
 #include "testcases.h"
 
-struct _aarch64_ctx *get_header(struct _aarch64_ctx *head, uint32_t magic,
-				size_t resv_sz, size_t *offset)
-{
-	size_t offs = 0;
-	struct _aarch64_ctx *found = NULL;
-
-	if (!head || resv_sz < HDR_SZ)
-		return found;
-
-	while (offs <= resv_sz - HDR_SZ &&
-	       head->magic != magic && head->magic) {
-		offs += head->size;
-		head = GET_RESV_NEXT_HEAD(head);
-	}
-	if (head->magic == magic) {
-		found = head;
-		if (offset)
-			*offset = offs;
-	}
-
-	return found;
-}
-
 bool validate_extra_context(struct extra_context *extra, char **err,
 			    void **extra_data, size_t *extra_size)
 {
diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.h b/tools/testing/selftests/arm64/signal/testcases/testcases.h
index 7727126347e0..3185e6875694 100644
--- a/tools/testing/selftests/arm64/signal/testcases/testcases.h
+++ b/tools/testing/selftests/arm64/signal/testcases/testcases.h
@@ -88,8 +88,29 @@ struct fake_sigframe {
 
 bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err);
 
-struct _aarch64_ctx *get_header(struct _aarch64_ctx *head, uint32_t magic,
-				size_t resv_sz, size_t *offset);
+static inline struct _aarch64_ctx *get_header(struct _aarch64_ctx *head, uint32_t magic,
+				size_t resv_sz, size_t *offset)
+{
+	size_t offs = 0;
+	struct _aarch64_ctx *found = NULL;
+
+	if (!head || resv_sz < HDR_SZ)
+		return found;
+
+	while (offs <= resv_sz - HDR_SZ &&
+	       head->magic != magic && head->magic) {
+		offs += head->size;
+		head = GET_RESV_NEXT_HEAD(head);
+	}
+	if (head->magic == magic) {
+		found = head;
+		if (offset)
+			*offset = offs;
+	}
+
+	return found;
+}
+
 
 static inline struct _aarch64_ctx *get_terminator(struct _aarch64_ctx *head,
 						  size_t resv_sz,
-- 
2.25.1