Introduce __read_frequently
While __read_mostly groups variables together, their placement is not specified. In particular 2 frequently used variables can end up in different lines. This annotation is only expected to be used for variables read all the time, e.g. on each syscall entry. MFC after: 1 week
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=323235
@ -146,6 +146,10 @@ SECTIONS
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. = DATA_SEGMENT_RELRO_END (24, .);
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.got.plt : { *(.got.plt) }
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. = ALIGN(64);
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.data.read_frequently :
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{
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*(.data.read_frequently)
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}
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.data.read_mostly :
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{
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*(.data.read_mostly)
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@ -138,6 +138,7 @@ void kassert_panic(const char *fmt, ...) __printflike(1, 2);
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* Align variables.
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*/
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#define __read_mostly __section(".data.read_mostly")
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#define __read_frequently __section(".data.read_frequently")
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#define __exclusive_cache_line __aligned(CACHE_LINE_SIZE) \
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__section(".data.exclusive_cache_line")
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/*
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