megasas_all...crash_buffer(9)

💅 megasas_alloc_host_crash_buffer(9) — the crash-dump buffer glow-up

okay so this one lives in the Kernel API Manual bestie, and it's genuinely iconic: it's the function that sets up the host-side buffers so the firmware can dump its crash data. Firmware drama gets collected, no cap. 🩷

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✨ NAME ✨

megasas_alloc_host_crash_buffer — Host buffers for Crash dump collection from Firmware

like, literally what it says on the tin: it's the buffer situation for scooping up that crash dump the firmware wants to hand over. 🎀

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🌸 SYNOPSIS 🌸

void megasas_alloc_host_crash_buffer (struct megasas_instance *instance
);

yep, one argument, void return, she's lowkey simple and that's the vibe. ✨

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🦋 ARGUMENTS 🦋

• instance — Controller's soft instance 🫶 (the per-controller software struct, the main character of this whole file tbh)

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⭐ RETURN ⭐

Number of allocated host crash buffers

that's the number you get back — how many host crash buffers ended up allocated. 💖

heads up though: the synopsis says void while RETURN talks about a count. we're reporting it exactly as written, bestie — not my job to fix their paperwork 💀

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🔥 SEE ALSO 🔥

she hangs out in the kernel file here:

• ./drivers/scsi/megaraid/megaraid_sas_fusion.c

and here's the whole group chat of friends, in order, all of them, every single one 👑:

• megasas_adp_reset_wait_for_ready(9)
• megasas_check_same_4gb_region(9)
• megasas_enable_intr_fusion(9)
• megasas_disable_intr_fusion(9)
• megasas_get_cmd_fusion(9)
• megasas_return_cmd_fusion(9)
• megasas_write_64bit_req_desc(9)
• megasas_fire_cmd_fusion(9)
• megasas_fusion_update_can_queue(9)
• megasas_free_cmds_fusion(9)
• megasas_create_sg_sense_fusion(9)
• megasas_alloc_cmds_fusion(9)
• wait_and_poll(9)
• megasas_ioc_init_fusion(9)
• megasas_sync_pd_seq_num(9)
• megasas_allocate_raid_maps(9)
• megasas_configure_queue_sizes(9)
• megasas_free_ioc_init_cmd(9)
• megasas_init_adapter_fusion(9)
• megasas_fault_detect_work(9)
• map_cmd_status(9)
• megasas_is_prp_possible(9)
• megasas_make_prp_nvme(9)
• megasas_make_sgl_fusion(9)
• megasas_make_sgl(9)
• megasas_set_pd_lba(9)
• megasas_stream_detect(9)
• megasas_set_raidflag_cpu_affinity(9)
• megasas_build_ldio_fusion(9)
• megasas_build_ld_nonrw_fusion(9)
• megasas_build_syspd_fusion(9)
• megasas_build_io_fusion(9)
• megasas_build_and_issue_cmd_fusion(9)
• megasas_complete_r1_command(9)
• access_irq_context(9)
• release_irq_context(9)
• complete_cmd_fusion(9)
• megasas_enable_irq_poll(9)
• megasas_sync_irqs(9)
• megasas_irqpoll(9)
• megasas_complete_cmd_dpc_fusion(9)
• megasas_isr_fusion(9)
• build_mpt_mfi_pass_thru(9)
• build_mpt_cmd(9)
• megasas_issue_dcmd_fusion(9)
• megasas_release_fusion(9)
• megasas_read_fw_status_reg_fusion(9)
• megasas_free_host_crash_buffer(9)
• megasas_adp_reset_fusion(9)
• megasas_check_reset_fusion(9)
• megasas_trigger_snap_dump(9)
• megasas_tm_response_code(9)
• megasas_issue_tm(9)

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mwah 💋 that's the whole page, and here's the cute sign-off: this little number ships out of ./drivers/scsi/megaraid, dated October 2026, and it's filed under the megasas_all...crash_buffer(9) manual slot. slay, go allocate some buffers responsibly 🧚‍♀️💜