msc_oldest_window(9)

💖 NAME 💖

msc_oldest_window(9) — from the Kernel API Manual, bestie — is literally here to locate the window with oldest data. That's the whole vibe: find the oldest window. Slay. ✨

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✨ SYNOPSIS ✨

struct msc_window * msc_oldest_window (struct msc *msc );

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🫶 ARGUMENTS 🫶

• msc — the MSC device. That's it, that's the argument, no cap. 💅

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🌸 DESCRIPTION 🌸

Okay so listen: this should only be used in multiblock mode. Like, multiblock mode is the whole prerequisite, no exceptions mentioned. Also, the caller should hold the msc::user_count reference. That's important — hold it, bestie. 🫶

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👑 RETURN 👑

It returns the oldest window with valid data. Iconic behavior, honestly. ✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/hwtracing/intel_th/msu.c — yes, the literal kernel file.
• struct msc_window(9)
• struct msc_iter(9)
• struct msc(9)
• struct msu_buffer_entry(9)
• msc_is_last_win(9)
• msc_next_window(9)
• msc_find_window(9)
• msc_win_oldest_sg(9)
• msc_buffer_iterate(9)
• msc_buffer_clear_hw_header(9)
• msc_configure(9)
• msc_disable(9)
• msc_buffer_contig_alloc(9)
• msc_buffer_contig_free(9)
• msc_buffer_contig_get_page(9)
• msc_buffer_win_alloc(9)
• msc_buffer_win_free(9)
• msc_buffer_relink(9)
• msc_buffer_free(9)
• msc_buffer_alloc(9)
• msc_buffer_unlocked_free_unless_used(9)
• msc_buffer_free_unless_used(9)
• msc_buffer_get_page(9)
• struct msc_win_to_user_struct(9)
• msc_win_to_user(9)
• intel_th_msc_window_unlock(9)

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Cute sign-off time: this page lives under ./drivers/hwtracing/intel_th, dated October 2026, and it's still msc_oldest_window(9) — periodt. 💜