__cacheline...egin_aligned(9)

🦋 __cacheline...egin_aligned(9) 🦋

okay bestie, welcome to the Kernel API Manual corner where we’re reading the page for __cacheline_group_begin_aligned. it’s giving “tiny but important struct alignment moment” and we’re gonna get into it, no cap. 💅

🌸 NAME 🌸

__cacheline_group_begin_aligned — declare an aligned group start. periodt.

✨ SYNOPSIS ✨

__cacheline_group_begin_aligned (GROUP , ... );

🎀 ARGUMENTS 🎀

• GROUP — name of the group. that’s the group’s whole identity rn.
• ... — optional group alignment. yes bestie, optional, she can vibe with or without it.

💖 DESCRIPTION 💖

ok so the following block inside a struct:

__cacheline_group_begin_aligned(grp); field a; field b;
__cacheline_group_end_aligned(grp);

will always be aligned to either the specified alignment or SMP_CACHE_BYTES. that’s the whole tea. ☕✨

👀 SEE ALSO 👀

• Kernel file ./include/linux/cache.h
• SMP_CACHE_ALIGN(9)
• __cacheline_group_end_aligned(9)

muah 💋 this little page lives in ./include/linux, dated October 2026, and the footer title is still __cacheline...egin_aligned(9) — source/version and date sign-off, bestie, we love a consistent icon. 🫶🎀