[Xen-devel] [PATCH 09/21] memblock: drop memblock_alloc_base()

[Mike Rapoport <rppt@xxxxxxxxxxxxx>]

The memblock_alloc_base() function tries to allocate a memory up to the
limit specified by its max_addr parameter and panics if the allocation
fails. Replace its usage with memblock_phys_alloc_range() and make the
callers check the return value and panic in case of error.

Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
---
 arch/powerpc/kernel/rtas.c      |  6 +++++-
 arch/powerpc/mm/hash_utils_64.c |  8 ++++++--
 arch/s390/kernel/smp.c          |  6 +++++-
 drivers/macintosh/smu.c         |  2 +-
 include/linux/memblock.h        |  2 --
 mm/memblock.c                   | 14 --------------
 6 files changed, 17 insertions(+), 21 deletions(-)

diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index de35bd8f..fbc6761 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -1187,7 +1187,11 @@ void __init rtas_initialize(void)
                ibm_suspend_me_token = rtas_token("ibm,suspend-me");
        }
 #endif
-       rtas_rmo_buf = memblock_alloc_base(RTAS_RMOBUF_MAX, PAGE_SIZE, 
rtas_region);
+       rtas_rmo_buf = memblock_phys_alloc_range(RTAS_RMOBUF_MAX, PAGE_SIZE,
+                                                0, rtas_region);
+       if (!rtas_rmo_buf)
+               panic("ERROR: RTAS: Failed to allocate %lx bytes below %pa\n",
+                     PAGE_SIZE, &rtas_region);
 
 #ifdef CONFIG_RTAS_ERROR_LOGGING
        rtas_last_error_token = rtas_token("rtas-last-error");
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index bc6be44..c7d5f48 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -882,8 +882,12 @@ static void __init htab_initialize(void)
                }
 #endif /* CONFIG_PPC_CELL */
 
-               table = memblock_alloc_base(htab_size_bytes, htab_size_bytes,
-                                           limit);
+               table = memblock_phys_alloc_range(htab_size_bytes,
+                                                 htab_size_bytes,
+                                                 0, limit);
+               if (!table)
+                       panic("ERROR: Failed to allocate %pa bytes below %pa\n",
+                             &htab_size_bytes, &limit);
 
                DBG("Hash table allocated at %lx, size: %lx\n", table,
                    htab_size_bytes);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index f82b3d3..9061597 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -651,7 +651,11 @@ void __init smp_save_dump_cpus(void)
                /* No previous system present, normal boot. */
                return;
        /* Allocate a page as dumping area for the store status sigps */
-       page = memblock_alloc_base(PAGE_SIZE, PAGE_SIZE, 1UL << 31);
+       page = memblock_phys_alloc_range(PAGE_SIZE, PAGE_SIZE, 0, 1UL << 31);
+       if (!page)
+               panic("ERROR: Failed to allocate %x bytes below %lx\n",
+                     PAGE_SIZE, 1UL << 31);
+
        /* Set multi-threading state to the previous system. */
        pcpu_set_smt(sclp.mtid_prev);
        boot_cpu_addr = stap();
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 0a0b8e1..42cf68d 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -485,7 +485,7 @@ int __init smu_init (void)
         * SMU based G5s need some memory below 2Gb. Thankfully this is
         * called at a time where memblock is still available.
         */
-       smu_cmdbuf_abs = memblock_alloc_base(4096, 4096, 0x80000000UL);
+       smu_cmdbuf_abs = memblock_phys_alloc_range(4096, 4096, 0, 0x80000000UL);
        if (smu_cmdbuf_abs == 0) {
                printk(KERN_ERR "SMU: Command buffer allocation failed !\n");
                ret = -EINVAL;
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 768e2b4..6874fdc 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -494,8 +494,6 @@ static inline bool memblock_bottom_up(void)
        return memblock.bottom_up;
 }
 
-phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
-                               phys_addr_t max_addr);
 phys_addr_t memblock_phys_mem_size(void);
 phys_addr_t memblock_reserved_size(void);
 phys_addr_t memblock_mem_size(unsigned long limit_pfn);
diff --git a/mm/memblock.c b/mm/memblock.c
index e5ffdcd..531fa77 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1363,20 +1363,6 @@ phys_addr_t __init memblock_phys_alloc_nid(phys_addr_t 
size, phys_addr_t align,
        return ret;
 }
 
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, 
phys_addr_t max_addr)
-{
-       phys_addr_t alloc;
-
-       alloc = memblock_alloc_range_nid(size, align, 0, max_addr, NUMA_NO_NODE,
-                                       MEMBLOCK_NONE);
-
-       if (alloc == 0)
-               panic("ERROR: Failed to allocate %pa bytes below %pa.\n",
-                     &size, &max_addr);
-
-       return alloc;
-}
-
 phys_addr_t __init memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t 
align, int nid)
 {
        phys_addr_t res = memblock_phys_alloc_nid(size, align, nid);
-- 
2.7.4


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