diff options
| author | Ian Moffett <ian@osmora.org> | 2024-06-07 21:25:10 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-06-07 21:25:10 -0400 |
| commit | f8ce8234aa7247c8f3a4317f5671b5fd40ffb8c8 (patch) | |
| tree | 4eb0667b44f557ea9c5449d932c19fc1db19889e /sys/arch/amd64 | |
| parent | 19e1b54d12edbe80419b7fde9c602833544eb7ab (diff) | |
kernel: Add __cacheline_aligned macro
This commit introduces a "__cacheline_aligned" macro which aligns data
by the cache line size (COHERENCY_UNIT bytes). This is useful for
heavily contended locks.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/conf/link.ld | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/arch/amd64/conf/link.ld b/sys/arch/amd64/conf/link.ld index b073054..9c47a81 100644 --- a/sys/arch/amd64/conf/link.ld +++ b/sys/arch/amd64/conf/link.ld @@ -32,7 +32,7 @@ SECTIONS . += CONSTANT(MAXPAGESIZE); .data : { - *(.data .data.*) + *(.data) } :data .bss : { @@ -40,6 +40,12 @@ SECTIONS *(.bss .bss.*) } :data + /* -- Cache line alignment -- */ + . = ALIGN(64); + .data.cacheline_aligned : { + *(.data.cacheline_aligned) + } + /DISCARD/ : { *(.eh_frame) *(.note .note.*) |