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Commit 7f0ad11d authored by Hari Bathini's avatar Hari Bathini Committed by Michael Ellerman
Browse files

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: default avatarHari Bathini <hbathini@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821320487.5656.2660730464212209984.stgit@hbathini.in.ibm.com
parent 961cf26a

arch/powerpc/include/asm/fadump-internal.h

+8 −0
Original line number Diff line number Diff line
@@ -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 */

arch/powerpc/kernel/fadump.c

+8 −8
Original line number Diff line number Diff line
@@ -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;