powerpc/fadump: declare helper functions in internal header file

Declare helper functions, that can be reused by multiple platforms,
in the internal header file.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821320487.5656.2660730464212209984.stgit@hbathini.in.ibm.com

diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h
index 16e2781a3e482284593f9e6ab23dfcf7c2d4480d..e004c89570b07c3fec840bb7650da774453452fd 100644 (file)
--- a/arch/powerpc/include/asm/fadump-internal.h
+++ b/arch/powerpc/include/asm/fadump-internal.h
@@ -83,4 +83,12 @@ struct fw_dump {
        unsigned long   nocma:1;
 };
 
+/* Helper functions */
+s32 fadump_setup_cpu_notes_buf(u32 num_cpus);
+void fadump_free_cpu_notes_buf(void);
+u32 *fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs);
+void fadump_update_elfcore_header(char *bufp);
+bool is_fadump_boot_mem_contiguous(void);
+bool is_fadump_reserved_mem_contiguous(void);
+
 #endif /* _ASM_POWERPC_FADUMP_INTERNAL_H */

diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index e2b83a991303d1ee3643a615aa931413ff4ff432..eb0745e418db34dac28221d035829d7048f6b9fb 100644 (file)
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -234,7 +234,7 @@ static bool is_fadump_mem_area_contiguous(u64 d_start, u64 d_end)
  * Returns true, if there are no holes in boot memory area,
  * false otherwise.
  */
-static bool is_boot_memory_area_contiguous(void)
+bool is_fadump_boot_mem_contiguous(void)
 {
        return is_fadump_mem_area_contiguous(0, fw_dump.boot_memory_size);
 }
@@ -243,7 +243,7 @@ static bool is_boot_memory_area_contiguous(void)
  * Returns true, if there are no holes in reserved memory area,
  * false otherwise.
  */
-static bool is_reserved_memory_area_contiguous(void)
+bool is_fadump_reserved_mem_contiguous(void)
 {
        u64 d_start, d_end;
 
@@ -617,9 +617,9 @@ static int register_fw_dump(struct fadump_mem_struct *fdm)
                        " dump. Hardware Error(%d).\n", rc);
                break;
        case -3:
-               if (!is_boot_memory_area_contiguous())
+               if (!is_fadump_boot_mem_contiguous())
                        pr_err("Can't have holes in boot memory area while registering fadump\n");
-               else if (!is_reserved_memory_area_contiguous())
+               else if (!is_fadump_reserved_mem_contiguous())
                        pr_err("Can't have holes in reserved memory area while"
                               " registering fadump\n");
 
@@ -749,7 +749,7 @@ fadump_read_registers(struct fadump_reg_entry *reg_entry, struct pt_regs *regs)
        return reg_entry;
 }
 
-static u32 *fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs)
+u32 *fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs)
 {
        struct elf_prstatus prstatus;
 
@@ -764,7 +764,7 @@ static u32 *fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs)
        return buf;
 }
 
-static void fadump_update_elfcore_header(char *bufp)
+void fadump_update_elfcore_header(char *bufp)
 {
        struct elfhdr *elf;
        struct elf_phdr *phdr;
@@ -815,7 +815,7 @@ static void fadump_free_buffer(unsigned long vaddr, unsigned long size)
        __free_pages(page, order);
 }
 
-static s32 fadump_setup_cpu_notes_buf(u32 num_cpus)
+s32 fadump_setup_cpu_notes_buf(u32 num_cpus)
 {
        /* Allocate buffer to hold cpu crash notes. */
        fw_dump.cpu_notes_buf_size = num_cpus * sizeof(note_buf_t);
@@ -834,7 +834,7 @@ static s32 fadump_setup_cpu_notes_buf(u32 num_cpus)
        return 0;
 }
 
-static void fadump_free_cpu_notes_buf(void)
+void fadump_free_cpu_notes_buf(void)
 {
        if (!fw_dump.cpu_notes_buf_vaddr)
                return;