resize_to_fit(9)

🎀 resize_to_fit(9) — the Kernel API Manual glow-up 🎀

okay bestie, so this is resize_to_fit from the Kernel API Manual, and it's lowkey the most helpful little function ever. like, it does exactly what it says on the tin: it resizes a buffer so it fits the amount of data you actually need. no drama, no guessing, just vibes and vmalloc. 💖

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✨ SYNOPSIS ✨

int resize_to_fit (char **buf , size_t *size , size_t desired_size );

that's the whole signature, bestie — memorize it, it's giving main character energy 🫶

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🌸 ARGUMENTS 🌸

• buf — a double pointer to your destination buffer. yeah, double pointer — two stars, two slays ⭐⭐
• size — a pointer to the size container. it's literally holding the size for you 💅
• desired_size — the size the buffer must contain. this is the goal, the dream, the target 🎯

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🦋 DESCRIPTION 🦋

so here's the tea: it returns 0 on success, or an error code on failure. that's it, that's the contract. 🤝

on success, the size of the buffer is at least desired_size — so it might be bigger, it's not gonna be smaller, we don't do that here. ✨

and the important part, no cap: the buffer is allocated via vmalloc and must be freed with vfree.

🚨 bestie please do not forget the vfree. vmalloc and vfree are a matched set, like me and iced coffee. if you free it wrong that's a whole situation 😭

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🧚 SEE ALSO 🧚

the kernel file lives at ./drivers/accel/habanalabs/common/state_dump.c — that's where the magic happens, iykyk 💜

and here's the whole friend group, all the sibling functions pulling up to the function party 🔥

• hl_format_as_binary(9)
• hl_snprintf_resize(9)
• hl_sync_engine_to_string(9)
• hl_print_resize_sync_engine(9)
• hl_state_dump_get_sync_name(9)
• hl_state_dump_get_monitor_name(9)
• hl_state_dump_free_sync_to_engine_map(9)
• hl_state_dump_get_sync_to_engine(9)
• hl_state_dump_read_sync_objects(9)
• hl_state_dump_free_sync_objects(9)
• hl_state_dump_print_syncs_single_block(9)
• hl_state_dump_print_syncs(9)
• hl_state_dump_alloc_read_sm_block_monitors(9)
• hl_state_dump_free_monitors(9)
• hl_state_dump_print_monitors_single_block(9)
• hl_state_dump_print_monitors(9)
• hl_state_dump_print_engine_fences(9)
• hl_state_dump_print_fences(9)
• hl_state_dump(9)

like, the whole hl_state_dump cinematic universe is right there. go read them all, you're welcome 🍓

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and that's the page! brought to you from ./drivers/accel/habanalabs/common, dated October 2026, and it's resize_to_fit(9) forever and always. slay, go free your buffers 💅✨👑