1KMALLOC_ARRAY(9)          Memory Management in Linux          KMALLOC_ARRAY(9)
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NAME

6       kmalloc_array - allocate memory for an array.
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SYNOPSIS

9       void * kmalloc_array(size_t n, size_t size, gfp_t flags);
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ARGUMENTS

12       n
13           number of elements.
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15       size
16           element size.
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18       flags
19           the type of memory to allocate.
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DESCRIPTION

22       The flags argument may be one of:
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24       GFP_USER - Allocate memory on behalf of user. May sleep.
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26       GFP_KERNEL - Allocate normal kernel ram. May sleep.
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28       GFP_ATOMIC - Allocation will not sleep. May use emergency pools. For
29       example, use this inside interrupt handlers.
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31       GFP_HIGHUSER - Allocate pages from high memory.
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33       GFP_NOIO - Do not do any I/O at all while trying to get memory.
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35       GFP_NOFS - Do not make any fs calls while trying to get memory.
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37       GFP_NOWAIT - Allocation will not sleep.
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39       __GFP_THISNODE - Allocate node-local memory only.
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41       GFP_DMA - Allocation suitable for DMA. Should only be used for kmalloc
42       caches. Otherwise, use a slab created with SLAB_DMA.
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44       Also it is possible to set different flags by OR'ing in one or more of
45       the following additional flags:
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47       __GFP_COLD - Request cache-cold pages instead of trying to return
48       cache-warm pages.
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50       __GFP_HIGH - This allocation has high priority and may use emergency
51       pools.
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53       __GFP_NOFAIL - Indicate that this allocation is in no way allowed to
54       fail (think twice before using).
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56       __GFP_NORETRY - If memory is not immediately available, then give up at
57       once.
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59       __GFP_NOWARN - If allocation fails, don't issue any warnings.
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61       __GFP_REPEAT - If allocation fails initially, try once more before
62       failing.
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64       There are other flags available as well, but these are not intended for
65       general use, and so are not documented here. For a full list of
66       potential flags, always refer to linux/gfp.h.
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69Kernel Hackers Manual 3.10         June 2019                  KMALLOC_ARRAY(9)
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