vbg_track_bit_usage(9)

💅 vbg_track_bit_usage(9) — the kernel API manual, bestie edition

okay so this is a page from the Kernel API Manual, and it's all about vbg_track_bit_usage — yes that's the function name, yes it's a mouthful, no we're not shortening it. sit down, grab a lil snack 🍓, and let's get into it.

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✨ NAME ✨

vbg_track_bit_usage — applies a change to the bit usage tracker.

like, it literally takes the tracker and updates it with what changed. that's the whole gig. main character energy fr. 👑

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🌸 SYNOPSIS 🌸

bool vbg_track_bit_usage (struct vbg_bit_usage_tracker *tracker , u32
changed , u32 previous );

that's the signature, copy it exactly bestie, no typos, the compiler is NOT forgiving and neither is the vibe check 💀

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🦋 ARGUMENTS 🦋

• tracker — the bit usage tracker. the lil guy we're updating. 🎀
• changed — the bits to change. the new situation, the glow-up, the diff.
• previous — the previous value of the bits. the before picture, for comparison. 🙈

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⭐ RETURN ⭐

returns true if the mask changed, and false if not. that's it. that's the answer. no cap. ✨

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💜 SEE ALSO 💜

first up, the kernel file this lives in:

./drivers/virt/vboxguest/vboxguest_core.c

and then the whole friend group, all of them, in order, because we do not leave anyone out:

• vbg_guest_mappings_init(9)
• vbg_guest_mappings_exit(9)
• vbg_report_guest_info(9)
• vbg_report_driver_status(9)
• vbg_balloon_inflate(9)
• vbg_balloon_deflate(9)
• vbg_heartbeat_host_config(9)
• vbg_heartbeat_init(9)
• vbg_heartbeat_exit(9)
• vbg_reset_host_event_filter(9)
• vbg_set_session_event_filter(9)
• vbg_reset_host_capabilities(9)
• vbg_set_host_capabilities(9)
• vbg_acquire_session_capabilities(9)
• vbg_set_session_capabilities(9)
• vbg_query_host_version(9)
• vbg_core_init(9)
• vbg_core_exit(9)
• vbg_core_open_session(9)
• vbg_core_close_session(9)
• vbg_req_allowed(9)
• vbg_core_ioctl(9)
• vbg_core_set_mouse_status(9)

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ok that's the whole page, go read the others if u want the full lore 🫶

and that's a wrap bestie!! this came from ./drivers/virt/vboxguest, dated October 2026, and it's page vbg_track_bit_usage(9) of the Kernel API Manual. mwah. 💅🌸💖