[PATCH 21/21] memblock: drop memblock_alloc_*_nopanic() variants

From: Mike Rapoport
Date: Wed Jan 16 2019 - 08:46:32 EST

As all the memblock allocation functions return NULL in case of error
rather than panic(), the duplicates with _nopanic suffix can be removed.

Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
---
arch/arc/kernel/unwind.c | 3 +--
arch/sh/mm/init.c | 2 +-
arch/x86/kernel/setup_percpu.c | 10 +++++-----
arch/x86/mm/kasan_init_64.c | 14 ++++++++------
drivers/firmware/memmap.c | 2 +-
drivers/usb/early/xhci-dbc.c | 2 +-
include/linux/memblock.h | 35 -----------------------------------
kernel/dma/swiotlb.c | 2 +-
kernel/printk/printk.c | 17 +++++++----------
mm/memblock.c | 35 -----------------------------------
mm/page_alloc.c | 10 +++++-----
mm/page_ext.c | 2 +-
mm/percpu.c | 11 ++++-------
mm/sparse.c | 6 ++----
14 files changed, 37 insertions(+), 114 deletions(-)

diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index d34f69e..271e9fa 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -181,8 +181,7 @@ static void init_unwind_hdr(struct unwind_table *table,
*/
static void *__init unw_hdr_alloc_early(unsigned long sz)
{
- return memblock_alloc_from_nopanic(sz, sizeof(unsigned int),
- MAX_DMA_ADDRESS);
+ return memblock_alloc_from(sz, sizeof(unsigned int), MAX_DMA_ADDRESS);
}

static void *unw_hdr_alloc(unsigned long sz)
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index fceefd9..7062132 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -202,7 +202,7 @@ void __init allocate_pgdat(unsigned int nid)
get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);

#ifdef CONFIG_NEED_MULTIPLE_NODES
- NODE_DATA(nid) = memblock_alloc_try_nid_nopanic(
+ NODE_DATA(nid) = memblock_alloc_try_nid(
sizeof(struct pglist_data),
SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT,
MEMBLOCK_ALLOC_ACCESSIBLE, nid);
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index e8796fc..0c5e9bf 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -106,22 +106,22 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size,
void *ptr;

if (!node_online(node) || !NODE_DATA(node)) {
- ptr = memblock_alloc_from_nopanic(size, align, goal);
+ ptr = memblock_alloc_from(size, align, goal);
pr_info("cpu %d has no node %d or node-local memory\n",
cpu, node);
pr_debug("per cpu data for cpu%d %lu bytes at %016lx\n",
cpu, size, __pa(ptr));
} else {
- ptr = memblock_alloc_try_nid_nopanic(size, align, goal,
- MEMBLOCK_ALLOC_ACCESSIBLE,
- node);
+ ptr = memblock_alloc_try_nid(size, align, goal,
+ MEMBLOCK_ALLOC_ACCESSIBLE,
+ node);

pr_debug("per cpu data for cpu%d %lu bytes on node%d at %016lx\n",
cpu, size, node, __pa(ptr));
}
return ptr;
#else
- return memblock_alloc_from_nopanic(size, align, goal);
+ return memblock_alloc_from(size, align, goal);
#endif
}

diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index 462fde8..8dc0fc0 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -24,14 +24,16 @@ extern struct range pfn_mapped[E820_MAX_ENTRIES];

static p4d_t tmp_p4d_table[MAX_PTRS_PER_P4D] __initdata __aligned(PAGE_SIZE);

-static __init void *early_alloc(size_t size, int nid, bool panic)
+static __init void *early_alloc(size_t size, int nid, bool should_panic)
{
- if (panic)
- return memblock_alloc_try_nid(size, size,
- __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, nid);
- else
- return memblock_alloc_try_nid_nopanic(size, size,
+ void *ptr = memblock_alloc_try_nid(size, size,
__pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, nid);
+
+ if (!ptr && should_panic)
+ panic("%pS: Failed to allocate page, nid=%d from=%lx\n",
+ (void *)_RET_IP_, nid, __pa(MAX_DMA_ADDRESS));
+
+ return ptr;
}

static void __init kasan_populate_pmd(pmd_t *pmd, unsigned long addr,
diff --git a/drivers/firmware/memmap.c b/drivers/firmware/memmap.c
index ec4fd25..d168c87 100644
--- a/drivers/firmware/memmap.c
+++ b/drivers/firmware/memmap.c
@@ -333,7 +333,7 @@ int __init firmware_map_add_early(u64 start, u64 end, const char *type)
{
struct firmware_map_entry *entry;

- entry = memblock_alloc_nopanic(sizeof(struct firmware_map_entry),
+ entry = memblock_alloc(sizeof(struct firmware_map_entry),
SMP_CACHE_BYTES);
if (WARN_ON(!entry))
return -ENOMEM;
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index d2652dc..c9cfb10 100644
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early/xhci-dbc.c
@@ -94,7 +94,7 @@ static void * __init xdbc_get_page(dma_addr_t *dma_addr)
{
void *virt;

- virt = memblock_alloc_nopanic(PAGE_SIZE, PAGE_SIZE);
+ virt = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
if (!virt)
return NULL;

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index f5a83a1..71c9e32 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -379,9 +379,6 @@ static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
phys_addr_t min_addr, phys_addr_t max_addr,
int nid);
-void *memblock_alloc_try_nid_nopanic(phys_addr_t size, phys_addr_t align,
- phys_addr_t min_addr, phys_addr_t max_addr,
- int nid);
void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
phys_addr_t min_addr, phys_addr_t max_addr,
int nid);
@@ -408,36 +405,12 @@ static inline void * __init memblock_alloc_from(phys_addr_t size,
MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
}

-static inline void * __init memblock_alloc_nopanic(phys_addr_t size,
- phys_addr_t align)
-{
- return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT,
- MEMBLOCK_ALLOC_ACCESSIBLE,
- NUMA_NO_NODE);
-}
-
static inline void * __init memblock_alloc_low(phys_addr_t size,
phys_addr_t align)
{
return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE);
}
-static inline void * __init memblock_alloc_low_nopanic(phys_addr_t size,
- phys_addr_t align)
-{
- return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT,
- ARCH_LOW_ADDRESS_LIMIT,
- NUMA_NO_NODE);
-}
-
-static inline void * __init memblock_alloc_from_nopanic(phys_addr_t size,
- phys_addr_t align,
- phys_addr_t min_addr)
-{
- return memblock_alloc_try_nid_nopanic(size, align, min_addr,
- MEMBLOCK_ALLOC_ACCESSIBLE,
- NUMA_NO_NODE);
-}

static inline void * __init memblock_alloc_node(phys_addr_t size,
phys_addr_t align, int nid)
@@ -446,14 +419,6 @@ static inline void * __init memblock_alloc_node(phys_addr_t size,
MEMBLOCK_ALLOC_ACCESSIBLE, nid);
}

-static inline void * __init memblock_alloc_node_nopanic(phys_addr_t size,
- int nid)
-{
- return memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES,
- MEMBLOCK_LOW_LIMIT,
- MEMBLOCK_ALLOC_ACCESSIBLE, nid);
-}
-
static inline void __init memblock_free_early(phys_addr_t base,
phys_addr_t size)
{
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index e78835c8..659fc2a5 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -248,7 +248,7 @@ swiotlb_init(int verbose)
bytes = io_tlb_nslabs << IO_TLB_SHIFT;

/* Get IO TLB memory from the low pages */
- vstart = memblock_alloc_low_nopanic(PAGE_ALIGN(bytes), PAGE_SIZE);
+ vstart = memblock_alloc_low(PAGE_ALIGN(bytes), PAGE_SIZE);
if (vstart && !swiotlb_init_with_tbl(vstart, io_tlb_nslabs, verbose))
return;

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index c4f0a41..ae65221 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1147,17 +1147,14 @@ void __init setup_log_buf(int early)
if (!new_log_buf_len)
return;

- if (early) {
- new_log_buf =
- memblock_alloc(new_log_buf_len, LOG_ALIGN);
- } else {
- new_log_buf = memblock_alloc_nopanic(new_log_buf_len,
- LOG_ALIGN);
- }
-
+ new_log_buf = memblock_alloc(new_log_buf_len, LOG_ALIGN);
if (unlikely(!new_log_buf)) {
- pr_err("log_buf_len: %lu bytes not available\n",
- new_log_buf_len);
+ if (early)
+ panic("log_buf_len: %lu bytes not available\n",
+ new_log_buf_len);
+ else
+ pr_err("log_buf_len: %lu bytes not available\n",
+ new_log_buf_len);
return;
}

diff --git a/mm/memblock.c b/mm/memblock.c
index 7164275..522a44e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1491,41 +1491,6 @@ void * __init memblock_alloc_try_nid_raw(
}

/**
- * memblock_alloc_try_nid_nopanic - allocate boot memory block
- * @size: size of memory block to be allocated in bytes
- * @align: alignment of the region and block's size
- * @min_addr: the lower bound of the memory region from where the allocation
- * is preferred (phys address)
- * @max_addr: the upper bound of the memory region from where the allocation
- * is preferred (phys address), or %MEMBLOCK_ALLOC_ACCESSIBLE to
- * allocate only from memory limited by memblock.current_limit value
- * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
- *
- * Public function, provides additional debug information (including caller
- * info), if enabled. This function zeroes the allocated memory.
- *
- * Return:
- * Virtual address of allocated memory block on success, NULL on failure.
- */
-void * __init memblock_alloc_try_nid_nopanic(
- phys_addr_t size, phys_addr_t align,
- phys_addr_t min_addr, phys_addr_t max_addr,
- int nid)
-{
- void *ptr;
-
- memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=%pa max_addr=%pa %pF\n",
- __func__, (u64)size, (u64)align, nid, &min_addr,
- &max_addr, (void *)_RET_IP_);
-
- ptr = memblock_alloc_internal(size, align,
- min_addr, max_addr, nid);
- if (ptr)
- memset(ptr, 0, size);
- return ptr;
-}
-
-/**
* memblock_alloc_try_nid - allocate boot memory block
* @size: size of memory block to be allocated in bytes
* @align: alignment of the region and block's size
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d7a5219..cd5c593 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6556,8 +6556,8 @@ static void __ref setup_usemap(struct pglist_data *pgdat,
zone->pageblock_flags = NULL;
if (usemapsize)
zone->pageblock_flags =
- memblock_alloc_node_nopanic(usemapsize,
- pgdat->node_id);
+ memblock_alloc_node(usemapsize, SMP_CACHE_BYTES,
+ pgdat->node_id);
}
#else
static inline void setup_usemap(struct pglist_data *pgdat, struct zone *zone,
@@ -6786,7 +6786,8 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
end = pgdat_end_pfn(pgdat);
end = ALIGN(end, MAX_ORDER_NR_PAGES);
size = (end - start) * sizeof(struct page);
- map = memblock_alloc_node_nopanic(size, pgdat->node_id);
+ map = memblock_alloc_node(size, SMP_CACHE_BYTES,
+ pgdat->node_id);
pgdat->node_mem_map = map + offset;
}
pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n",
@@ -8064,8 +8065,7 @@ void *__init alloc_large_system_hash(const char *tablename,
size = bucketsize << log2qty;
if (flags & HASH_EARLY) {
if (flags & HASH_ZERO)
- table = memblock_alloc_nopanic(size,
- SMP_CACHE_BYTES);
+ table = memblock_alloc(size, SMP_CACHE_BYTES);
else
table = memblock_alloc_raw(size,
SMP_CACHE_BYTES);
diff --git a/mm/page_ext.c b/mm/page_ext.c
index 0cfaa06..a3db109 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -161,7 +161,7 @@ static int __init alloc_node_page_ext(int nid)

table_size = get_entry_size() * nr_pages;

- base = memblock_alloc_try_nid_nopanic(
+ base = memblock_alloc_try_nid(
table_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS),
MEMBLOCK_ALLOC_ACCESSIBLE, nid);
if (!base)
diff --git a/mm/percpu.c b/mm/percpu.c
index 5998b03..e302b81 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1905,7 +1905,7 @@ struct pcpu_alloc_info * __init pcpu_alloc_alloc_info(int nr_groups,
__alignof__(ai->groups[0].cpu_map[0]));
ai_size = base_size + nr_units * sizeof(ai->groups[0].cpu_map[0]);

- ptr = memblock_alloc_nopanic(PFN_ALIGN(ai_size), PAGE_SIZE);
+ ptr = memblock_alloc(PFN_ALIGN(ai_size), PAGE_SIZE);
if (!ptr)
return NULL;
ai = ptr;
@@ -2496,7 +2496,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_sum = ai->static_size + ai->reserved_size + ai->dyn_size;
areas_size = PFN_ALIGN(ai->nr_groups * sizeof(void *));

- areas = memblock_alloc_nopanic(areas_size, SMP_CACHE_BYTES);
+ areas = memblock_alloc(areas_size, SMP_CACHE_BYTES);
if (!areas) {
rc = -ENOMEM;
goto out_free;
@@ -2729,8 +2729,7 @@ EXPORT_SYMBOL(__per_cpu_offset);
static void * __init pcpu_dfl_fc_alloc(unsigned int cpu, size_t size,
size_t align)
{
- return memblock_alloc_from_nopanic(
- size, align, __pa(MAX_DMA_ADDRESS));
+ return memblock_alloc_from(size, align, __pa(MAX_DMA_ADDRESS));
}

static void __init pcpu_dfl_fc_free(void *ptr, size_t size)
@@ -2778,9 +2777,7 @@ void __init setup_per_cpu_areas(void)
void *fc;

ai = pcpu_alloc_alloc_info(1, 1);
- fc = memblock_alloc_from_nopanic(unit_size,
- PAGE_SIZE,
- __pa(MAX_DMA_ADDRESS));
+ fc = memblock_alloc_from(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
if (!ai || !fc)
panic("Failed to allocate memory for percpu areas.");
/* kmemleak tracks the percpu allocations separately */
diff --git a/mm/sparse.c b/mm/sparse.c
index ad94242..1471f06 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -330,9 +330,7 @@ sparse_early_usemaps_alloc_pgdat_section(struct pglist_data *pgdat,
limit = goal + (1UL << PA_SECTION_SHIFT);
nid = early_pfn_to_nid(goal >> PAGE_SHIFT);
again:
- p = memblock_alloc_try_nid_nopanic(size,
- SMP_CACHE_BYTES, goal, limit,
- nid);
+ p = memblock_alloc_try_nid(size, SMP_CACHE_BYTES, goal, limit, nid);
if (!p && limit) {
limit = 0;
goto again;
@@ -386,7 +384,7 @@ static unsigned long * __init
sparse_early_usemaps_alloc_pgdat_section(struct pglist_data *pgdat,
unsigned long size)
{
- return memblock_alloc_node_nopanic(size, pgdat->node_id);
+ return memblock_alloc_node(size, SMP_CACHE_BYTES, pgdat->node_id);
}

static void __init check_usemap_section_nr(int nid, unsigned long *usemap)
--
2.7.4