xe_guc_chec...buf_overflow(9)

💅 NAME 💅

xe_guc_check_log_buf_overflow — bestie, it literally checks if the log buffer overflowed ✨

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🎀 SYNOPSIS 🎀

bool xe_guc_check_log_buf_overflow (struct xe_guc_log *log , enum
       guc_log_type type , unsigned int full_cnt );

Ok so this is from the Kernel API Manual and it returns a bool, which is giving "yes or no, no in-between" energy 👑

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🦋 ARGUMENTS 🦋

• log — the log object itself, the main character of this whole situation 🫶
• type — the log buffer type, iykyk 🌸
• full_cnt — the count of buffer full, like how many times it hit the ceiling 😭

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🔥 DESCRIPTION 🔥

So here's the vibe: this function checks the count of buffer full against the previous one, and if there's a mismatch, that literally indicates it overflowed 💀 periodt.

Then it updates the sampled_overflow counter — and ngl this part is a little iconic: if the 4 bit counter overflowed, it adds up 16 to correct the value. Yes, 16, no cap, that's the whole trick ✨

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👑 RETURN 👑

Returns True if overflowed. That's it, that's the answer 💅

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🌈 SEE ALSO 🌈

Kernel file ./drivers/gpu/drm/xe/xe_guc_log.c — go read it, bestie 📖

• xe_guc_log_snapshot_free(9)
• xe_guc_log_snapshot_capture(9)
• xe_guc_log_snapshot_print(9)
• xe_guc_log_print_dmesg(9)
• xe_guc_log_print(9)
• xe_guc_log_print_lfd(9)

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🦋 mwah, that's the whole page! brought to you from ./drivers/gpu/drm/xe, dated October 2026 — go off, kernel bestie, you ate that 💖🎀🧚