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authorJohannes Berg <johannes.berg@intel.com>2020-04-25 13:04:49 +0300
committerLuca Coelho <luciano.coelho@intel.com>2020-05-08 09:52:40 +0300
commit752d95a2bf6fe207d612fc1febd621df714f5dde (patch)
tree4b5f90942a3cc8de46592221fd7d168adb45a9a0 /tools/perf/scripts/python/export-to-postgresql.py
parent36dfe9ac6e8b8fc2e25733d003a867a40db791da (diff)
downloadlinux-752d95a2bf6fe207d612fc1febd621df714f5dde.tar.xz
iwlwifi: pcie: allocate much smaller byte-count table
The hardware needs a byte-count table with the size of each frame on the queue to build A-MPDUs, but: * newer generation no longer have the duplicated space at the end, they can deal with the wrap properly - and we don't even fill the dup anyway * we have a maximum queue size of 512 right now and don't use the theoretical hardware maximum of 65536. Together, this reduces the byte count table DMA allocation from 64KiB (65536*2 + 64*2 rounded up) to 1 KiB (though that might be rounded up to a full 4 KiB page by the allocator, not sure it can share the allocations.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20200425130140.c263b787b5ab.I059507a9760b1ce1d45d84dcaa91629a5cfb58e0@changeid
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