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Subject[PATCH 3/3] powerpc/mm: print hash info in a helper
Date
Reduce #ifdef mess by defining a helper to print
hash info at startup.

In the meantime, remove the display of hash table address
to reduce leak of non necessary information.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/kernel/setup-common.c | 19 +------------------
arch/powerpc/mm/hash_utils_64.c | 8 ++++++++
arch/powerpc/mm/mmu_decl.h | 5 ++++-
arch/powerpc/mm/ppc_mmu_32.c | 9 ++++++++-
4 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 2e5dfb6e0823..f24a74f7912d 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -799,12 +799,6 @@ void arch_setup_pdev_archdata(struct platform_device *pdev)
static __init void print_system_info(void)
{
pr_info("-----------------------------------------------------\n");
-#ifdef CONFIG_PPC_BOOK3S_64
- pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
-#endif
-#ifdef CONFIG_PPC_BOOK3S_32
- pr_info("Hash_size = 0x%lx\n", Hash_size);
-#endif
pr_info("phys_mem_size = 0x%llx\n",
(unsigned long long)memblock_phys_mem_size());

@@ -826,18 +820,7 @@ static __init void print_system_info(void)
pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features);
#endif

-#ifdef CONFIG_PPC_BOOK3S_64
- if (htab_address)
- pr_info("htab_address = 0x%p\n", htab_address);
- if (htab_hash_mask)
- pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
-#endif
-#ifdef CONFIG_PPC_BOOK3S_32
- if (Hash)
- pr_info("Hash = 0x%p\n", Hash);
- if (Hash_mask)
- pr_info("Hash_mask = 0x%lx\n", Hash_mask);
-#endif
+ print_system_hash_info();

if (PHYSICAL_START > 0)
pr_info("physical_start = 0x%llx\n",
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 0a4f939a8161..017380b890bb 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -1909,3 +1909,11 @@ static int __init hash64_debugfs(void)
}
machine_device_initcall(pseries, hash64_debugfs);
#endif /* CONFIG_DEBUG_FS */
+
+void __init print_system_hash_info(void)
+{
+ pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
+
+ if (htab_hash_mask)
+ pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
+}
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index f7f1374ba3ee..dc617ade83ab 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -83,6 +83,8 @@ static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
}
#endif

+static inline void print_system_hash_info(void) {}
+
#else /* CONFIG_PPC_MMU_NOHASH */

extern void hash_preload(struct mm_struct *mm, unsigned long ea,
@@ -92,6 +94,8 @@ extern void hash_preload(struct mm_struct *mm, unsigned long ea,
extern void _tlbie(unsigned long address);
extern void _tlbia(void);

+void print_system_hash_info(void);
+
#endif /* CONFIG_PPC_MMU_NOHASH */

#ifdef CONFIG_PPC32
@@ -105,7 +109,6 @@ extern unsigned int rtas_data, rtas_size;

struct hash_pte;
extern struct hash_pte *Hash;
-extern unsigned long Hash_size, Hash_mask;

#endif /* CONFIG_PPC32 */

diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 088f14d57cce..864096489b6d 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -37,7 +37,7 @@
#include "mmu_decl.h"

struct hash_pte *Hash;
-unsigned long Hash_size, Hash_mask;
+static unsigned long Hash_size, Hash_mask;
unsigned long _SDR1;

struct ppc_bat BATS[8][2]; /* 8 pairs of IBAT, DBAT */
@@ -392,3 +392,10 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
else /* Anything else has 256M mapped */
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x10000000));
}
+
+void __init print_system_hash_info(void)
+{
+ pr_info("Hash_size = 0x%lx\n", Hash_size);
+ if (Hash_mask)
+ pr_info("Hash_mask = 0x%lx\n", Hash_mask);
+}
--
2.13.3
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