msc_buffer_contig_alloc(9)

✨ NAME ✨

okay so this is msc_buffer_contig_alloc(9) from the Kernel API Manual, and its whole iconic job is: allocate a contiguous buffer for SINGLE mode. 💅✨

🎀 SYNOPSIS 🎀

int msc_buffer_contig_alloc (struct msc *msc , unsigned long size );

🌸 ARGUMENTS 🌸

• msc — MSC device 🫶
• size — allocation size in bytes 🍓

💖 DESCRIPTION 💖

Bestie, quick heads-up before you call this: it modifies msc::base, which requires msc::buf_mutex to serialize. So the caller is expected to hold it. Yes, you — hold that mutex, okay? 🔒😭

🫶 Reminder: this modifies msc::base, and msc::buf_mutex is the thing that serializes it. The caller is expected to already be holding it.

🔥 RETURN 🔥

• 0 on success 🌈
• -errno otherwise 💀

👑 SEE ALSO 👑

Kernel file ./drivers/hwtracing/intel_th/msu.c plus all these cuties:

• 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_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_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)

Later, bestie! This page comes from the source/version ./drivers/hwtracing/intel_th, dated October 2026. Mwah 💋🎀