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author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-05-28 16:36:19 +0300 |
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committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-05-28 16:36:19 +0300 |
commit | 86b3de60a0b634cdcef82d0a2091bc5444a00020 (patch) | |
tree | 2c9adf9f4171cc33baeb7ebc6200bc5b3cbafd73 /kernel/Kconfig.preempt | |
parent | a124692b698b00026a58d89831ceda2331b2e1d0 (diff) | |
download | linux-86b3de60a0b634cdcef82d0a2091bc5444a00020.tar.xz |
ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS
Commit c19fa94a8fed ("Add HAVE_64BIT_ALIGNED_ACCESS") added the config for
architectures that required 64bit aligned access for all 64bit words. As
the ftrace ring buffer stores data on 4 byte alignment, this config option
was used to force it to store data on 8 byte alignment to make sure the data
being stored and written directly into the ring buffer was 8 byte aligned as
it would cause issues trying to write an 8 byte word on a 4 not 8 byte
aligned memory location.
But with the removal of the metag architecture, which was the only
architecture to use this, there is no architecture supported by Linux that
requires 8 byte aligne access for all 8 byte words (4 byte alignment is good
enough). Removing this config can simplify the code a bit.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/Kconfig.preempt')
0 files changed, 0 insertions, 0 deletions