The spdk_mem_reserve() function reserves a memory region in SPDK's
memory maps. This pre-allocates all of the required data structures
to hold memory address translations for that region without actually
populating the region.
After a region is reserved, calls to spdk_mem_register() for
addresses in that range will not require any internal memory
allocations. This is useful when overlaying a custom memory allocator
on top of SPDK's hugepage memory, such as tcmalloc.
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2511 (master)
This backport requires increasing SO_MINOR version, since it adds
new API. Version 2.1 does not conflict with any other, since on master
the API was increased from 2 to 3 SO_VER see:
(229ef16b) lib/env_dpdk: add map file and rev so major version.
(cherry picked from commit cf450c0d7c)
Change-Id: Ia4e8a770e8b5c956814aa90e9119013356dfab46
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2600
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
d635d6d297