[PATCH 2/8] crash_core: change the prototype of function parse_crashkernel()

[Baoquan He]

Add two parameters 'low_size' and 'high' to function parse_crashkernel(),
later crashkernel=,high|low parsing will be added. Make adjustments in all
call sites of parse_crashkernel() in arch.

Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
---
 arch/arm/kernel/setup.c              |  3 ++-
 arch/arm64/mm/init.c                 |  2 +-
 arch/ia64/kernel/setup.c             |  2 +-
 arch/loongarch/kernel/setup.c        |  4 +++-
 arch/mips/kernel/setup.c             |  3 ++-
 arch/powerpc/kernel/fadump.c         |  2 +-
 arch/powerpc/kexec/core.c            |  2 +-
 arch/powerpc/mm/nohash/kaslr_booke.c |  2 +-
 arch/riscv/mm/init.c                 |  2 +-
 arch/s390/kernel/setup.c             |  4 ++--
 arch/sh/kernel/machine_kexec.c       |  2 +-
 arch/x86/kernel/setup.c              |  3 ++-
 include/linux/crash_core.h           |  3 ++-
 kernel/crash_core.c                  | 15 ++++++++++++---
 14 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c66b560562b3..e2bb7afd0683 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1010,7 +1010,8 @@ static void __init reserve_crashkernel(void)
 
 	total_mem = get_total_mem();
 	ret = parse_crashkernel(boot_command_line, total_mem,
-				&crash_size, &crash_base);
+				&crash_size, &crash_base,
+				NULL, NULL);
 	/* invalid value specified or crashkernel=0 */
 	if (ret || !crash_size)
 		return;
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index d31c3a9290c5..36967b82c150 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -115,7 +115,7 @@ static void __init reserve_crashkernel(void)
 
 	/* crashkernel=X[@offset] */
 	ret = parse_crashkernel(cmdline, memblock_phys_mem_size(),
-				&crash_size, &crash_base);
+				&crash_size, &crash_base, NULL, NULL);
 	if (ret == -ENOENT) {
 		ret = parse_crashkernel_high(cmdline, 0, &crash_size, &crash_base);
 		if (ret || !crash_size)
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5a55ac82c13a..4faea2d2cf07 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -277,7 +277,7 @@ static void __init setup_crashkernel(unsigned long total, int *n)
 	int ret;
 
 	ret = parse_crashkernel(boot_command_line, total,
-			&size, &base);
+			&size, &base, NULL, NULL);
 	if (ret == 0 && size > 0) {
 		if (!base) {
 			sort_regions(rsvd_region, *n);
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 9d830ab4e302..776a068d8718 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -267,7 +267,9 @@ static void __init arch_parse_crashkernel(void)
 	unsigned long long crash_base, crash_size;
 
 	total_mem = memblock_phys_mem_size();
-	ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base);
+	ret = parse_crashkernel(boot_command_line, total_mem,
+				&crash_size, &crash_base,
+				NULL, NULL);
 	if (ret < 0 || crash_size <= 0)
 		return;
 
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index cb871eb784a7..08321c945ac4 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -460,7 +460,8 @@ static void __init mips_parse_crashkernel(void)
 
 	total_mem = memblock_phys_mem_size();
 	ret = parse_crashkernel(boot_command_line, total_mem,
-				&crash_size, &crash_base);
+				&crash_size, &crash_base,
+				NULL, NULL);
 	if (ret != 0 || crash_size <= 0)
 		return;
 
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index ea0a073abd96..7dbdeba56e74 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -313,7 +313,7 @@ static __init u64 fadump_calculate_reserve_size(void)
 	 * memory at a predefined offset.
 	 */
 	ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
-				&size, &base);
+				&size, &base, NULL, NULL);
 	if (ret == 0 && size > 0) {
 		unsigned long max_size;
 
diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c
index de64c7962991..9346c960b296 100644
--- a/arch/powerpc/kexec/core.c
+++ b/arch/powerpc/kexec/core.c
@@ -109,7 +109,7 @@ void __init reserve_crashkernel(void)
 	total_mem_sz = memory_limit ? memory_limit : memblock_phys_mem_size();
 	/* use common parsing */
 	ret = parse_crashkernel(boot_command_line, total_mem_sz,
-			&crash_size, &crash_base);
+			&crash_size, &crash_base, NULL, NULL);
 	if (ret == 0 && crash_size > 0) {
 		crashk_res.start = crash_base;
 		crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index 2fb3edafe9ab..b4f2786a7d2b 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c
@@ -178,7 +178,7 @@ static void __init get_crash_kernel(void *fdt, unsigned long size)
 	int ret;
 
 	ret = parse_crashkernel(boot_command_line, size, &crash_size,
-				&crash_base);
+				&crash_base, NULL, NULL);
 	if (ret != 0 || crash_size == 0)
 		return;
 	if (crash_base == 0)
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index e4c35ac2357f..a9ef0824f905 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -1332,7 +1332,7 @@ static void __init reserve_crashkernel(void)
 	}
 
 	ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
-				&crash_size, &crash_base);
+				&crash_size, &crash_base, NULL, NULL);
 	if (ret || !crash_size)
 		return;
 
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 00d76448319d..386a36181ceb 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -625,8 +625,8 @@ static void __init reserve_crashkernel(void)
 	phys_addr_t low, high;
 	int rc;
 
-	rc = parse_crashkernel(boot_command_line, ident_map_size, &crash_size,
-			       &crash_base);
+	rc = parse_crashkernel(boot_command_line, ident_map_size,
+			       &crash_size, &crash_base, NULL, NULL);
 
 	crash_base = ALIGN(crash_base, KEXEC_CRASH_MEM_ALIGN);
 	crash_size = ALIGN(crash_size, KEXEC_CRASH_MEM_ALIGN);
diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
index 223c14f44af7..fa3a7b36190a 100644
--- a/arch/sh/kernel/machine_kexec.c
+++ b/arch/sh/kernel/machine_kexec.c
@@ -154,7 +154,7 @@ void __init reserve_crashkernel(void)
 	int ret;
 
 	ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
-			&crash_size, &crash_base);
+			&crash_size, &crash_base, NULL, NULL);
 	if (ret == 0 && crash_size > 0) {
 		crashk_res.start = crash_base;
 		crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fd975a4a5200..382c66d2cf71 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -558,7 +558,8 @@ static void __init reserve_crashkernel(void)
 	total_mem = memblock_phys_mem_size();
 
 	/* crashkernel=XM */
-	ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base);
+	ret = parse_crashkernel(boot_command_line, total_mem,
+				&crash_size, &crash_base, NULL, NULL);
 	if (ret != 0 || crash_size <= 0) {
 		/* crashkernel=X,high */
 		ret = parse_crashkernel_high(boot_command_line, total_mem,
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index de62a722431e..2e76289699ff 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -78,7 +78,8 @@ Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type,
 void final_note(Elf_Word *buf);
 
 int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
-		unsigned long long *crash_size, unsigned long long *crash_base);
+		unsigned long long *crash_size, unsigned long long *crash_base,
+		unsigned long long *low_size, bool *high);
 int parse_crashkernel_high(char *cmdline, unsigned long long system_ram,
 		unsigned long long *crash_size, unsigned long long *crash_base);
 int parse_crashkernel_low(char *cmdline, unsigned long long system_ram,
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index f27b4e45d410..f6a5c219e2e1 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -280,10 +280,19 @@ static int __init __parse_crashkernel(char *cmdline,
 int __init parse_crashkernel(char *cmdline,
 			     unsigned long long system_ram,
 			     unsigned long long *crash_size,
-			     unsigned long long *crash_base)
+			     unsigned long long *crash_base,
+			     unsigned long long *low_size,
+			     bool *high)
 {
-	return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base,
-				NULL);
+	int ret;
+
+	/* crashkernel=X[@offset] */
+	ret = __parse_crashkernel(cmdline, system_ram, crash_size,
+				crash_base, NULL);
+	if (!high)
+		return ret;
+
+	return 0;
 }
 
 int __init parse_crashkernel_high(char *cmdline,
-- 
2.41.0