vmw_validation_drop_ht(9)
π vmw_validation_drop_ht(9) β Kernel API Manual
okay so bestie, we're in the kernel API manual and today's main character is vmw_validation_drop_ht, which is a function in section 9. she's not complicated, she's just important, and honestly? icon behavior. π
β¨ NAME β¨
vmw_validation_drop_ht β reset the hash table that's used for duplicate finding, and unregister it from this validation context. literally that's the whole job and she does it flawlessly. π¦
πΈ SYNOPSIS πΈ
void vmw_validation_drop_ht (struct vmw_validation_context *ctx );
no return value, nothing fancy, just vibes and a cleanup. π
π§ ARGUMENTS π§
ctxβ the validation context. that's it. that's the whole argument. she just needs to know which context we're talking about and she'll handle the rest. π«Ά
π₯ DESCRIPTION π₯
okay so here's the tea β: the hash table used for duplicate finding is an expensive resource, and it may be protected by mutexes that may cause deadlocks during resource unreferencing if held. like, that's a real yikes π β deadlocks are not cute, we do not stan deadlocks.
after resource- and buffer object registering, there is no longer any use for this hash table, so she allows freeing it either:
- to shorten any mutex locking time, or
- before resources- and buffer objects are freed during validation context cleanup.
kinda giving responsible bestie who cleans up after herself before things get messy. slay. π
lowkey remember: the whole point is that holding that mutex can deadlock during unreferencing, so dropping the hash table early is the self-care this validation context deserves. β¨
β SEE ALSO β
bestie consumption <333 β go read these, they're all part of the same squad π«Ά:
- Kernel file
./drivers/gpu/drm/vmwgfx/vmwgfx_validation.c - struct
vmw_validation_bo_node(9) - struct
vmw_validation_res_node(9) vmw_validation_mem_alloc(9)vmw_validation_mem_free(9)vmw_validation_find_bo_dup(9)vmw_validation_find_res_dup(9)vmw_validation_add_bo(9)vmw_validation_add_resource(9)vmw_validation_res_set_dirty(9)vmw_validation_res_switch_backup(9)vmw_validation_res_reserve(9)vmw_validation_res_unreserve(9)vmw_validation_bo_validate_single(9)vmw_validation_bo_validate(9)vmw_validation_res_validate(9)vmw_validation_unref_lists(9)vmw_validation_prepare(9)vmw_validation_revert(9)vmw_validation_done(9)vmw_validation_preload_bo(9)vmw_validation_preload_res(9)vmw_validation_bo_backoff(9)
and that's the whole page, bestie π this little gem lives at ./drivers/gpu/drm/vmwgfx and the version/date stamp on her is October 2026 β periodt, no cap, go touch some buffers responsibly πβ¨π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms