[PATCH] Add pr_info() traces for investigation

[Christophe Leroy <christophe.leroy@csgroup.eu>]

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/powerpc/kernel/btext.c     | 2 ++
 arch/powerpc/mm/book3s32/kuap.c | 5 +++++
 arch/powerpc/mm/book3s32/mmu.c  | 3 +++
 arch/powerpc/mm/kasan/init_32.c | 3 +++
 arch/powerpc/mm/pgtable_32.c    | 4 ++++
 5 files changed, 17 insertions(+)

diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 19e46fd623b0..ec989e1011f0 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -126,7 +126,9 @@ void __init btext_setup_display(int width, int height, int depth, int pitch,
 
 void __init btext_unmap(void)
 {
+	pr_info("%s:%d\n", __func__, __LINE__);
 	boot_text_mapped = 0;
+	pr_info("%s:%d\n", __func__, __LINE__);
 }
 
 /* Here's a small text engine to use during early boot
diff --git a/arch/powerpc/mm/book3s32/kuap.c b/arch/powerpc/mm/book3s32/kuap.c
index 28676cabb005..856d18c135bf 100644
--- a/arch/powerpc/mm/book3s32/kuap.c
+++ b/arch/powerpc/mm/book3s32/kuap.c
@@ -20,17 +20,22 @@ EXPORT_SYMBOL(kuap_unlock_all_ool);
 
 void setup_kuap(bool disabled)
 {
+	pr_info("%s:%d\n", __func__, __LINE__);
 	if (!disabled) {
+		pr_info("%s:%d\n", __func__, __LINE__);
 		kuap_lock_all_ool();
 		init_mm.context.sr0 |= SR_KS;
 		current->thread.sr0 |= SR_KS;
 	}
+	pr_info("%s:%d\n", __func__, __LINE__);
 
 	if (smp_processor_id() != boot_cpuid)
 		return;
 
+	pr_info("%s:%d\n", __func__, __LINE__);
 	if (disabled)
 		static_branch_enable(&disable_kuap_key);
 	else
 		pr_info("Activating Kernel Userspace Access Protection\n");
+	pr_info("%s:%d\n", __func__, __LINE__);
 }
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c
index 850783cfa9c7..ab0c19acd3f3 100644
--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -143,6 +143,7 @@ static unsigned long __init __mmu_mapin_ram(unsigned long base, unsigned long to
 {
 	int idx;
 
+	pr_info("%s:%d %lx %lx\n", __func__, __LINE__, base, top);
 	while ((idx = find_free_bat()) != -1 && base != top) {
 		unsigned int size = bat_block_size(base, top);
 
@@ -151,6 +152,7 @@ static unsigned long __init __mmu_mapin_ram(unsigned long base, unsigned long to
 		setbat(idx, PAGE_OFFSET + base, base, size, PAGE_KERNEL_X);
 		base += size;
 	}
+	pr_info("%s:%d %lx\n", __func__, __LINE__, base);
 
 	return base;
 }
@@ -164,6 +166,7 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 	size = roundup_pow_of_two((unsigned long)_einittext - PAGE_OFFSET);
 	setibat(0, PAGE_OFFSET, 0, size, PAGE_KERNEL_X);
 
+	pr_info("%s:%d %lx %lx %lx %lx\n", __func__, __LINE__, base, top, border, size);
 	if (debug_pagealloc_enabled_or_kfence()) {
 		pr_debug_once("Read-Write memory mapped without BATs\n");
 		if (base >= border)
diff --git a/arch/powerpc/mm/kasan/init_32.c b/arch/powerpc/mm/kasan/init_32.c
index a70828a6d935..a0f82d9a1fa6 100644
--- a/arch/powerpc/mm/kasan/init_32.c
+++ b/arch/powerpc/mm/kasan/init_32.c
@@ -126,12 +126,15 @@ void __init kasan_mmu_init(void)
 {
 	int ret;
 
+	pr_info("%s:%d\n", __func__, __LINE__);
 	if (early_mmu_has_feature(MMU_FTR_HPTE_TABLE)) {
 		ret = kasan_init_shadow_page_tables(KASAN_SHADOW_START, KASAN_SHADOW_END);
+		pr_info("%s:%d %d\n", __func__, __LINE__, ret);
 
 		if (ret)
 			panic("kasan: kasan_init_shadow_page_tables() failed");
 	}
+	pr_info("%s:%d\n", __func__, __LINE__);
 }
 
 void __init kasan_init(void)
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 5c02fd08d61e..d75084f67d9b 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -104,6 +104,7 @@ static void __init __mapin_ram_chunk(unsigned long offset, unsigned long top)
 	phys_addr_t p;
 	bool ktext;
 
+	pr_info("%s:%d %lx %lx\n", __func__, __LINE__, offset, top);
 	s = offset;
 	v = PAGE_OFFSET + s;
 	p = memstart_addr + s;
@@ -113,6 +114,7 @@ static void __init __mapin_ram_chunk(unsigned long offset, unsigned long top)
 		v += PAGE_SIZE;
 		p += PAGE_SIZE;
 	}
+	pr_info("%s:%d\n", __func__, __LINE__);
 }
 
 void __init mapin_ram(void)
@@ -120,6 +122,7 @@ void __init mapin_ram(void)
 	phys_addr_t base, end;
 	u64 i;
 
+	pr_info("%s:%d\n", __func__, __LINE__);
 	for_each_mem_range(i, &base, &end) {
 		phys_addr_t top = min(end, total_lowmem);
 
@@ -128,6 +131,7 @@ void __init mapin_ram(void)
 		base = mmu_mapin_ram(base, top);
 		__mapin_ram_chunk(base, top);
 	}
+	pr_info("%s:%d\n", __func__, __LINE__);
 }
 
 void mark_initmem_nx(void)
-- 
2.41.0