STRUCT MSC_ITER(9)

🌸 NAME 🌸

okay so this is struct msc_iter(9) from the Kernel API Manual, and bestie, it's literally the iterator for msc buffer 💅 no cap, that's the whole vibe.

✨ SYNOPSIS ✨

       struct msc_iter {
           struct list_head        entry;
           struct msc              *msc;
           struct msc_window       *start_win;
           struct msc_window       *win;
           unsigned long           offset;
           struct scatterlist      *start_block;
           struct scatterlist      *block;
           unsigned int            block_off;
           unsigned int            wrap_count;
           unsigned int            eof;
        };

🫶 Members 🫶

okay so here's the member-by-member breakdown, bestie — every field, every vibe, zero skipped details 🎀

• entry — the msc::iter_list linkage 🦋
• msc — pointer to the MSC device, iconic 🔥
• start_win — oldest window, the beginning of the story 🌸
• win — current window, main character energy 👑
• offset — current logical offset into the buffer, periodt ✨
• start_block — oldest block in the window, fr fr 🫶
• block — block number in the window 💅
• block_off — offset into current block, lowkey important 😭
• wrap_count — block wrapping handling, iykyk 🌈
• eof — end of buffer reached, like when the group chat hits the last message 💀

🌈 SEE ALSO 🌈

go read these too, bestie — the whole msc cinematic universe is right here 👑

• Kernel file ./drivers/hwtracing/intel_th/msu.c
• struct msc_window(9)
• struct msc(9)
• struct msu_buffer_entry(9)
• msc_is_last_win(9)
• msc_next_window(9)
• msc_find_window(9)
• msc_oldest_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)

xoxo, this page was served fresh from ./drivers/hwtracing/intel_th 💖 October 2026 edition 🎀 slay ✨