summaryrefslogtreecommitdiff
path: root/include/linux/bootmem.h
diff options
context:
space:
mode:
authorPavel Tatashin <pasha.tatashin@oracle.com>2017-11-16 04:36:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-16 05:21:05 +0300
commitea1f5f3712afe895dfa4176ec87376b4a9ac23be (patch)
tree811aa064975f28525952d7d797f2d54452abf1b5 /include/linux/bootmem.h
parentdf8ee578894ebb591c2995cce422e6189c8bb757 (diff)
downloadlinux-ea1f5f3712afe895dfa4176ec87376b4a9ac23be.tar.xz
mm: define memblock_virt_alloc_try_nid_raw
* A new variant of memblock_virt_alloc_* allocations: memblock_virt_alloc_try_nid_raw() - Does not zero the allocated memory - Does not panic if request cannot be satisfied * optimize early system hash allocations Clients can call alloc_large_system_hash() with flag: HASH_ZERO to specify that memory that was allocated for system hash needs to be zeroed, otherwise the memory does not need to be zeroed, and client will initialize it. If memory does not need to be zero'd, call the new memblock_virt_alloc_raw() interface, and thus improve the boot performance. * debug for raw alloctor When CONFIG_DEBUG_VM is enabled, this patch sets all the memory that is returned by memblock_virt_alloc_try_nid_raw() to ones to ensure that no places excpect zeroed memory. Link: http://lkml.kernel.org/r/20171013173214.27300-6-pasha.tatashin@oracle.com Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: Steven Sistare <steven.sistare@oracle.com> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Bob Picco <bob.picco@oracle.com> Tested-by: Bob Picco <bob.picco@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r--include/linux/bootmem.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index fdf40ca04b3c..a53063e9d7d8 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -161,6 +161,9 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0)
/* FIXME: Move to memblock.h at a point where we remove nobootmem.c */
+void *memblock_virt_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_virt_alloc_try_nid_nopanic(phys_addr_t size,
phys_addr_t align, phys_addr_t min_addr,
phys_addr_t max_addr, int nid);
@@ -177,6 +180,14 @@ static inline void * __init memblock_virt_alloc(
NUMA_NO_NODE);
}
+static inline void * __init memblock_virt_alloc_raw(
+ phys_addr_t size, phys_addr_t align)
+{
+ return memblock_virt_alloc_try_nid_raw(size, align, BOOTMEM_LOW_LIMIT,
+ BOOTMEM_ALLOC_ACCESSIBLE,
+ NUMA_NO_NODE);
+}
+
static inline void * __init memblock_virt_alloc_nopanic(
phys_addr_t size, phys_addr_t align)
{
@@ -258,6 +269,14 @@ static inline void * __init memblock_virt_alloc(
return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT);
}
+static inline void * __init memblock_virt_alloc_raw(
+ phys_addr_t size, phys_addr_t align)
+{
+ if (!align)
+ align = SMP_CACHE_BYTES;
+ return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
+}
+
static inline void * __init memblock_virt_alloc_nopanic(
phys_addr_t size, phys_addr_t align)
{
@@ -310,6 +329,14 @@ static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size,
min_addr);
}
+static inline void * __init memblock_virt_alloc_try_nid_raw(
+ phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr, int nid)
+{
+ return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
+ min_addr, max_addr);
+}
+
static inline void * __init memblock_virt_alloc_try_nid_nopanic(
phys_addr_t size, phys_addr_t align,
phys_addr_t min_addr, phys_addr_t max_addr, int nid)