rdma_alloc_hw_stats_struct(9)

💖 rdma_alloc_hw_stats_struct — a.k.a. the Kernel API Manual era 💖

okay so bestie, welcome to the <pink>Kernel API Manual</pink>, and today's main character is rdma_alloc_hw_stats_struct(9). she's a little helper function, and her whole job is literally just allocating a dynamic struct for the drivers 🫶

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✨ NAME ✨

rdma_alloc_hw_stats_struct — the helper function that allocates a dynamic struct for the drivers, no cap 💅

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🌸 SYNOPSIS 🌸

struct rdma_hw_stats * rdma_alloc_hw_stats_struct (const struct
       rdma_stat_desc *descs , int num_counters , unsigned long lifespan );

like, that's the whole signature, copy it exactly please, she's iconic and we don't edit her 🙈

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🦋 ARGUMENTS 🦋

• descs — the array of static descriptors. yes bestie, static descriptors, they're just sitting there being static. slay.
• num_counters — the number of elements in that array. that's it, that's the vibe check. 🔥
• lifespan — the milliseconds between updates. milliseconds!! not seconds, not hours, milli. periodt. ⏱️

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👑 SEE ALSO 👑

okay so this is the part where I need you to stay with me because the list is long and she ate every single time. first up, the kernel file:

• ./drivers/infiniband/core/verbs.c

and then the whole friend group, fr fr:

• __ib_alloc_pd(9)
• ib_dealloc_pd_user(9)
• rdma_copy_ah_attr(9)
• rdma_replace_ah_attr(9)
• rdma_move_ah_attr(9)
• rdma_create_ah(9)
• rdma_create_user_ah(9)
• rdma_move_grh_sgid_attr(9)
• rdma_destroy_ah_attr(9)
• ib_create_srq_user(9)
• ib_create_qp_user(9)
• ib_resolve_eth_dmac(9)
• ib_modify_qp_with_udata(9)
• ib_alloc_mr(9)
• ib_alloc_mr_integrity(9)
• ib_alloc_xrcd_user(9)
• ib_dealloc_xrcd_user(9)
• ib_create_wq(9)
• ib_destroy_wq_user(9)
• ib_map_mr_sg_pi(9)
• ib_map_mr_sg(9)
• ib_sg_to_pages(9)
• ib_drain_sq(9)
• ib_drain_rq(9)
• ib_drain_qp(9)
• rdma_free_hw_stats_struct(9)

also the directory ./drivers/infiniband/core gets a shoutout because that's where all the lore lives 💜

ngl bestie, if you're gonna call the alloc function, you highkey owe it to yourself to read rdma_free_hw_stats_struct(9) too — she's literally right there at the end of the list 👀

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mwah 💋 that's the page. this lil beauty comes to you from the <lavender>Kernel API Manual</lavender>, lives in <mint>./drivers/infiniband/core</mint>, and the date on her birth certificate says <yellow>October 2026</yellow> — and the manual still calls her <rainbow>rdma_alloc_hw_stats_struct(9)</rainbow> because obviously, that's her name, iykyk ✨🎀