kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE

Move the stuff currently only used by the kexec file code within
CONFIG_KEXEC_FILE (and CONFIG_KEXEC_VERIFY_SIG).

Also move internal "struct kexec_sha_region" and "struct kexec_buf" into
"kexec_internal.h".

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Dave Young <dyoung@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 25 insertions, 37 deletions

diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 7b68d2788a56..2cc643c6e870 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -109,11 +109,7 @@ struct compat_kexec_segment {
 };
 #endif
 
-struct kexec_sha_region {
-	unsigned long start;
-	unsigned long len;
-};
-
+#ifdef CONFIG_KEXEC_FILE
 struct purgatory_info {
 	/* Pointer to elf header of read only purgatory */
 	Elf_Ehdr *ehdr;
@@ -130,6 +126,28 @@ struct purgatory_info {
 	unsigned long purgatory_load_addr;
 };
 
+typedef int (kexec_probe_t)(const char *kernel_buf, unsigned long kernel_size);
+typedef void *(kexec_load_t)(struct kimage *image, char *kernel_buf,
+			     unsigned long kernel_len, char *initrd,
+			     unsigned long initrd_len, char *cmdline,
+			     unsigned long cmdline_len);
+typedef int (kexec_cleanup_t)(void *loader_data);
+
+#ifdef CONFIG_KEXEC_VERIFY_SIG
+typedef int (kexec_verify_sig_t)(const char *kernel_buf,
+				 unsigned long kernel_len);
+#endif
+
+struct kexec_file_ops {
+	kexec_probe_t *probe;
+	kexec_load_t *load;
+	kexec_cleanup_t *cleanup;
+#ifdef CONFIG_KEXEC_VERIFY_SIG
+	kexec_verify_sig_t *verify_sig;
+#endif
+};
+#endif
+
 struct kimage {
 	kimage_entry_t head;
 	kimage_entry_t *entry;
@@ -161,6 +179,7 @@ struct kimage {
 	struct kimage_arch arch;
 #endif
 
+#ifdef CONFIG_KEXEC_FILE
 	/* Additional fields for file based kexec syscall */
 	void *kernel_buf;
 	unsigned long kernel_buf_len;
@@ -179,38 +198,7 @@ struct kimage {
 
 	/* Information for loading purgatory */
 	struct purgatory_info purgatory_info;
-};
-
-/*
- * Keeps track of buffer parameters as provided by caller for requesting
- * memory placement of buffer.
- */
-struct kexec_buf {
-	struct kimage *image;
-	char *buffer;
-	unsigned long bufsz;
-	unsigned long mem;
-	unsigned long memsz;
-	unsigned long buf_align;
-	unsigned long buf_min;
-	unsigned long buf_max;
-	bool top_down;		/* allocate from top of memory hole */
-};
-
-typedef int (kexec_probe_t)(const char *kernel_buf, unsigned long kernel_size);
-typedef void *(kexec_load_t)(struct kimage *image, char *kernel_buf,
-			     unsigned long kernel_len, char *initrd,
-			     unsigned long initrd_len, char *cmdline,
-			     unsigned long cmdline_len);
-typedef int (kexec_cleanup_t)(void *loader_data);
-typedef int (kexec_verify_sig_t)(const char *kernel_buf,
-				 unsigned long kernel_len);
-
-struct kexec_file_ops {
-	kexec_probe_t *probe;
-	kexec_load_t *load;
-	kexec_cleanup_t *cleanup;
-	kexec_verify_sig_t *verify_sig;
+#endif
 };
 
 /* kexec interface functions */