r535_gsp_copy_log(9)

💫 r535_gsp_copy_log 💫

okay so bestie, welcome to the Kernel API Manual, section 9 — this is r535_gsp_copy_log, and it's lowkey a little rescue mission for logs. let me tell you everything 🫶

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✨ NAME ✨

r535_gsp_copy_log — preserve the logging buffers in a blob 🎀

like, the whole point is saving the logs so they don't ✨vanish✨

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🦋 SYNOPSIS 🦋

int r535_gsp_copy_log (struct dentry *parent , const char *name , const
struct debugfs_blob_wrapper *s , struct debugfs_blob_wrapper *t );

yes that's the exact signature, no cap — return type is int, periodt 💅

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🌸 ARGUMENTS 🌸

• parent — the top-level dentry for this GPU 👑 (the big boss directory, essentially)
• name — name of debugfs entry to create ✨ (the label you're putting on the new thing)
• s — original wrapper object to copy from 🍓 (the source, the og)
• t — new wrapper object to copy to 💜 (the destination, the fresh one)

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🔥 DESCRIPTION 🔥

okay so listen — when GSP shuts down, the nvkm_gsp object and all its memory is deleted 💀. like, gone gone. not me crying over freed memory 😭

so to preserve the logging buffers, the buffers need to be copied — but only if they actually have data. that's the vibe check right there: no data, no copy. we don't waste effort on empty buffers, fr fr. ✨

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🌈 SEE ALSO 🌈

bestie these are the related links, all of them, i'm not skipping a single one:

• Kernel file ./drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gsp.c 📁
• nvkm_gsp_mem_ctor(9)
• struct registry_list_entry(9)
• add_registry(9)
• build_registry(9)
• clean_registry(9)
• strip(9)
• r535_gsp_rpc_set_registry(9)
• r535_gsp_msg_run_cpu_sequencer(9)
• struct rpc_ucode_libos_print_v1e_08(9)
• r535_gsp_msg_libos_print(9)
• create_debugfs(9)
• r535_gsp_libos_debugfs_init(9)
• create_pte_array(9)
• r535_gsp_libos_init(9)
• nvkm_gsp_radix3_sg(9)
• r535_debugfs_shutdown(9)
• is_empty(9)
• r535_gsp_retain_logging(9)
• r535_gsp_libos_debugfs_fini(9)

that's a whole friend group honestly 🧚💖

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ngl, the moral of the story is: memory gets yeeted on GSP shutdown, so copy the log buffers first — but only when there's actually something in them. 🎀

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and that's a wrap, bestie! this page came from ./drivers/gpu/drm/nouveau/nvkm... (that's the source/version bit, don't @ me, it's truncated in the original too 😭) and it's dated October 2026. r535_gsp_copy_log(9) out — slay, happy debugging, mwah 💅💖