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Date: Wed, 8 Jul 2020 12:10:20 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Randy Dunlap <rdunlap@...radead.org>,
Linux MM <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
Jonathan Corbet <corbet@....net>
Cc: Mike Rapoport <rppt@...nel.org>,
"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: [PATCH -next] Documentation/vm: fix tables in
arch_pgtable_helpers
On 07/08/2020 06:37 AM, Randy Dunlap wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
>
> Make the tables be presented as tables in the generated output files
> (the line drawing did not present well).
>
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Jonathan Corbet <corbet@....net>
> Cc: linux-doc@...r.kernel.org
> Cc: Anshuman Khandual <anshuman.khandual@....com>
> Cc: Mike Rapoport <rppt@...nel.org>
> Cc: linux-arch@...r.kernel.org
> Cc: linux-mm@...ck.org
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> ---
> Documentation/vm/arch_pgtable_helpers.rst | 333 ++++++--------------
> 1 file changed, 116 insertions(+), 217 deletions(-)
>
> --- linux-next-20200707.orig/Documentation/vm/arch_pgtable_helpers.rst
> +++ linux-next-20200707/Documentation/vm/arch_pgtable_helpers.rst
> @@ -17,242 +17,141 @@ test need to be in sync.
> PTE Page Table Helpers
> ======================
>
> ---------------------------------------------------------------------------------
> -| pte_same | Tests whether both PTE entries are the same |
> ---------------------------------------------------------------------------------
> -| pte_bad | Tests a non-table mapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_present | Tests a valid mapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_young | Tests a young PTE |
> ---------------------------------------------------------------------------------
> -| pte_dirty | Tests a dirty PTE |
> ---------------------------------------------------------------------------------
> -| pte_write | Tests a writable PTE |
> ---------------------------------------------------------------------------------
> -| pte_special | Tests a special PTE |
> ---------------------------------------------------------------------------------
> -| pte_protnone | Tests a PROT_NONE PTE |
> ---------------------------------------------------------------------------------
> -| pte_devmap | Tests a ZONE_DEVICE mapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_soft_dirty | Tests a soft dirty PTE |
> ---------------------------------------------------------------------------------
> -| pte_swp_soft_dirty | Tests a soft dirty swapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkyoung | Creates a young PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkold | Creates an old PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkdirty | Creates a dirty PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkclean | Creates a clean PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkwrite | Creates a writable PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkwrprotect | Creates a write protected PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkspecial | Creates a special PTE |
> ---------------------------------------------------------------------------------
> -| pte_mkdevmap | Creates a ZONE_DEVICE mapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_mksoft_dirty | Creates a soft dirty PTE |
> ---------------------------------------------------------------------------------
> -| pte_clear_soft_dirty | Clears a soft dirty PTE |
> ---------------------------------------------------------------------------------
> -| pte_swp_mksoft_dirty | Creates a soft dirty swapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_swp_clear_soft_dirty | Clears a soft dirty swapped PTE |
> ---------------------------------------------------------------------------------
> -| pte_mknotpresent | Invalidates a mapped PTE |
> ---------------------------------------------------------------------------------
> -| ptep_get_and_clear | Clears a PTE |
> ---------------------------------------------------------------------------------
> -| ptep_get_and_clear_full | Clears a PTE |
> ---------------------------------------------------------------------------------
> -| ptep_test_and_clear_young | Clears young from a PTE |
> ---------------------------------------------------------------------------------
> -| ptep_set_wrprotect | Converts into a write protected PTE |
> ---------------------------------------------------------------------------------
> -| ptep_set_access_flags | Converts into a more permissive PTE |
> ---------------------------------------------------------------------------------
> +=========================== ================================================
> +pte_same Tests whether both PTE entries are the same
> +pte_bad Tests a non-table mapped PTE
> +pte_present Tests a valid mapped PTE
> +pte_young Tests a young PTE
> +pte_dirty Tests a dirty PTE
> +pte_write Tests a writable PTE
> +pte_special Tests a special PTE
> +pte_protnone Tests a PROT_NONE PTE
> +pte_devmap Tests a ZONE_DEVICE mapped PTE
> +pte_soft_dirty Tests a soft dirty PTE
> +pte_swp_soft_dirty Tests a soft dirty swapped PTE
> +pte_mkyoung Creates a young PTE
> +pte_mkold Creates an old PTE
> +pte_mkdirty Creates a dirty PTE
> +pte_mkclean Creates a clean PTE
> +pte_mkwrite Creates a writable PTE
> +pte_mkwrprotect Creates a write protected PTE
> +pte_mkspecial Creates a special PTE
> +pte_mkdevmap Creates a ZONE_DEVICE mapped PTE
> +pte_mksoft_dirty Creates a soft dirty PTE
> +pte_clear_soft_dirty Clears a soft dirty PTE
> +pte_swp_mksoft_dirty Creates a soft dirty swapped PTE
> +pte_swp_clear_soft_dirty Clears a soft dirty swapped PTE
> +pte_mknotpresent Invalidates a mapped PTE
> +ptep_get_and_clear Clears a PTE
> +ptep_get_and_clear_full Clears a PTE
> +ptep_test_and_clear_young Clears young from a PTE
> +ptep_set_wrprotect Converts into a write protected PTE
> +ptep_set_access_flags Converts into a more permissive PTE
> +=========================== ================================================
>
> ======================
> PMD Page Table Helpers
> ======================
>
> ---------------------------------------------------------------------------------
> -| pmd_same | Tests whether both PMD entries are the same |
> ---------------------------------------------------------------------------------
> -| pmd_bad | Tests a non-table mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_leaf | Tests a leaf mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_huge | Tests a HugeTLB mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_trans_huge | Tests a Transparent Huge Page (THP) at PMD |
> ---------------------------------------------------------------------------------
> -| pmd_present | Tests a valid mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_young | Tests a young PMD |
> ---------------------------------------------------------------------------------
> -| pmd_dirty | Tests a dirty PMD |
> ---------------------------------------------------------------------------------
> -| pmd_write | Tests a writable PMD |
> ---------------------------------------------------------------------------------
> -| pmd_special | Tests a special PMD |
> ---------------------------------------------------------------------------------
> -| pmd_protnone | Tests a PROT_NONE PMD |
> ---------------------------------------------------------------------------------
> -| pmd_devmap | Tests a ZONE_DEVICE mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_soft_dirty | Tests a soft dirty PMD |
> ---------------------------------------------------------------------------------
> -| pmd_swp_soft_dirty | Tests a soft dirty swapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkyoung | Creates a young PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkold | Creates an old PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkdirty | Creates a dirty PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkclean | Creates a clean PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkwrite | Creates a writable PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkwrprotect | Creates a write protected PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkspecial | Creates a special PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkdevmap | Creates a ZONE_DEVICE mapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mksoft_dirty | Creates a soft dirty PMD |
> ---------------------------------------------------------------------------------
> -| pmd_clear_soft_dirty | Clears a soft dirty PMD |
> ---------------------------------------------------------------------------------
> -| pmd_swp_mksoft_dirty | Creates a soft dirty swapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_swp_clear_soft_dirty | Clears a soft dirty swapped PMD |
> ---------------------------------------------------------------------------------
> -| pmd_mkinvalid | Invalidates a mapped PMD [1] |
> ---------------------------------------------------------------------------------
> -| pmd_set_huge | Creates a PMD huge mapping |
> ---------------------------------------------------------------------------------
> -| pmd_clear_huge | Clears a PMD huge mapping |
> ---------------------------------------------------------------------------------
> -| pmdp_get_and_clear | Clears a PMD |
> ---------------------------------------------------------------------------------
> -| pmdp_get_and_clear_full | Clears a PMD |
> ---------------------------------------------------------------------------------
> -| pmdp_test_and_clear_young | Clears young from a PMD |
> ---------------------------------------------------------------------------------
> -| pmdp_set_wrprotect | Converts into a write protected PMD |
> ---------------------------------------------------------------------------------
> -| pmdp_set_access_flags | Converts into a more permissive PMD |
> ---------------------------------------------------------------------------------
> +=========================== ================================================
> +pmd_same Tests whether both PMD entries are the same
> +pmd_bad Tests a non-table mapped PMD
> +pmd_leaf Tests a leaf mapped PMD
> +pmd_huge Tests a HugeTLB mapped PMD
> +pmd_trans_huge Tests a Transparent Huge Page (THP) at PMD
> +pmd_present Tests a valid mapped PMD
> +pmd_young Tests a young PMD
> +pmd_dirty Tests a dirty PMD
> +pmd_write Tests a writable PMD
> +pmd_special Tests a special PMD
> +pmd_protnone Tests a PROT_NONE PMD
> +pmd_devmap Tests a ZONE_DEVICE mapped PMD
> +pmd_soft_dirty Tests a soft dirty PMD
> +pmd_swp_soft_dirty Tests a soft dirty swapped PMD
> +pmd_mkyoung Creates a young PMD
> +pmd_mkold Creates an old PMD
> +pmd_mkdirty Creates a dirty PMD
> +pmd_mkclean Creates a clean PMD
> +pmd_mkwrite Creates a writable PMD
> +pmd_mkwrprotect Creates a write protected PMD
> +pmd_mkspecial Creates a special PMD
> +pmd_mkdevmap Creates a ZONE_DEVICE mapped PMD
> +pmd_mksoft_dirty Creates a soft dirty PMD
> +pmd_clear_soft_dirty Clears a soft dirty PMD
> +pmd_swp_mksoft_dirty Creates a soft dirty swapped PMD
> +pmd_swp_clear_soft_dirty Clears a soft dirty swapped PMD
> +pmd_mkinvalid Invalidates a mapped PMD [1]
> +pmd_set_huge Creates a PMD huge mapping
> +pmd_clear_huge Clears a PMD huge mapping
> +pmdp_get_and_clear Clears a PMD
> +pmdp_get_and_clear_full Clears a PMD
> +pmdp_test_and_clear_young Clears young from a PMD
> +pmdp_set_wrprotect Converts into a write protected PMD
> +pmdp_set_access_flags Converts into a more permissive PMD
> +=========================== ================================================
>
> ======================
> PUD Page Table Helpers
> ======================
>
> ---------------------------------------------------------------------------------
> -| pud_same | Tests whether both PUD entries are the same |
> ---------------------------------------------------------------------------------
> -| pud_bad | Tests a non-table mapped PUD |
> ---------------------------------------------------------------------------------
> -| pud_leaf | Tests a leaf mapped PUD |
> ---------------------------------------------------------------------------------
> -| pud_huge | Tests a HugeTLB mapped PUD |
> ---------------------------------------------------------------------------------
> -| pud_trans_huge | Tests a Transparent Huge Page (THP) at PUD |
> ---------------------------------------------------------------------------------
> -| pud_present | Tests a valid mapped PUD |
> ---------------------------------------------------------------------------------
> -| pud_young | Tests a young PUD |
> ---------------------------------------------------------------------------------
> -| pud_dirty | Tests a dirty PUD |
> ---------------------------------------------------------------------------------
> -| pud_write | Tests a writable PUD |
> ---------------------------------------------------------------------------------
> -| pud_devmap | Tests a ZONE_DEVICE mapped PUD |
> ---------------------------------------------------------------------------------
> -| pud_mkyoung | Creates a young PUD |
> ---------------------------------------------------------------------------------
> -| pud_mkold | Creates an old PUD |
> ---------------------------------------------------------------------------------
> -| pud_mkdirty | Creates a dirty PUD |
> ---------------------------------------------------------------------------------
> -| pud_mkclean | Creates a clean PUD |
> ---------------------------------------------------------------------------------
> -| pud_mkwrite | Creates a writable PMD |
> ---------------------------------------------------------------------------------
> -| pud_mkwrprotect | Creates a write protected PMD |
> ---------------------------------------------------------------------------------
> -| pud_mkdevmap | Creates a ZONE_DEVICE mapped PMD |
> ---------------------------------------------------------------------------------
> -| pud_mkinvalid | Invalidates a mapped PUD [1] |
> ---------------------------------------------------------------------------------
> -| pud_set_huge | Creates a PUD huge mapping |
> ---------------------------------------------------------------------------------
> -| pud_clear_huge | Clears a PUD huge mapping |
> ---------------------------------------------------------------------------------
> -| pudp_get_and_clear | Clears a PUD |
> ---------------------------------------------------------------------------------
> -| pudp_get_and_clear_full | Clears a PUD |
> ---------------------------------------------------------------------------------
> -| pudp_test_and_clear_young | Clears young from a PUD |
> ---------------------------------------------------------------------------------
> -| pudp_set_wrprotect | Converts into a write protected PUD |
> ---------------------------------------------------------------------------------
> -| pudp_set_access_flags | Converts into a more permissive PUD |
> ---------------------------------------------------------------------------------
> +=========================== ================================================
> +pud_same Tests whether both PUD entries are the same
> +pud_bad Tests a non-table mapped PUD
> +pud_leaf Tests a leaf mapped PUD
> +pud_huge Tests a HugeTLB mapped PUD
> +pud_trans_huge Tests a Transparent Huge Page (THP) at PUD
> +pud_present Tests a valid mapped PUD
> +pud_young Tests a young PUD
> +pud_dirty Tests a dirty PUD
> +pud_write Tests a writable PUD
> +pud_devmap Tests a ZONE_DEVICE mapped PUD
> +pud_mkyoung Creates a young PUD
> +pud_mkold Creates an old PUD
> +pud_mkdirty Creates a dirty PUD
> +pud_mkclean Creates a clean PUD
> +pud_mkwrite Creates a writable PMD
> +pud_mkwrprotect Creates a write protected PMD
> +pud_mkdevmap Creates a ZONE_DEVICE mapped PMD
Three lines above should be change as s/PMD/PUD/. These typos are
present from the original patch.
> +pud_mkinvalid Invalidates a mapped PUD [1]
> +pud_set_huge Creates a PUD huge mapping
> +pud_clear_huge Clears a PUD huge mapping
> +pudp_get_and_clear Clears a PUD
> +pudp_get_and_clear_full Clears a PUD
> +pudp_test_and_clear_young Clears young from a PUD
> +pudp_set_wrprotect Converts into a write protected PUD
> +pudp_set_access_flags Converts into a more permissive PUD
> +=========================== ================================================
>
> ==========================
> HugeTLB Page Table Helpers
> ==========================
>
> ---------------------------------------------------------------------------------
> -| pte_huge | Tests a HugeTLB |
> ---------------------------------------------------------------------------------
> -| pte_mkhuge | Creates a HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_pte_dirty | Tests a dirty HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_pte_write | Tests a writable HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_pte_mkdirty | Creates a dirty HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_pte_mkwrite | Creates a writable HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_pte_mkwrprotect | Creates a write protected HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_ptep_get_and_clear | Clears a HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_ptep_set_wrprotect | Converts into a write protected HugeTLB |
> ---------------------------------------------------------------------------------
> -| huge_ptep_set_access_flags | Converts into a more permissive HugeTLB |
> ---------------------------------------------------------------------------------
> +============================ ===============================================
> +pte_huge Tests a HugeTLB
> +pte_mkhuge Creates a HugeTLB
> +huge_pte_dirty Tests a dirty HugeTLB
> +huge_pte_write Tests a writable HugeTLB
> +huge_pte_mkdirty Creates a dirty HugeTLB
> +huge_pte_mkwrite Creates a writable HugeTLB
> +huge_pte_mkwrprotect Creates a write protected HugeTLB
> +huge_ptep_get_and_clear Clears a HugeTLB
> +huge_ptep_set_wrprotect Converts into a write protected HugeTLB
> +huge_ptep_set_access_flags Converts into a more permissive HugeTLB
> +============================ ===============================================
>
> ========================
> SWAP Page Table Helpers
> ========================
>
> ---------------------------------------------------------------------------------
> -| __pte_to_swp_entry | Creates a swapped entry (arch) from a mapepd PTE |
> ---------------------------------------------------------------------------------
> -| __swp_to_pte_entry | Creates a mapped PTE from a swapped entry (arch) |
> ---------------------------------------------------------------------------------
> -| __pmd_to_swp_entry | Creates a swapped entry (arch) from a mapepd PMD |
> ---------------------------------------------------------------------------------
s/mapepd/mapped. ^^^^^^^^^^
> -| __swp_to_pmd_entry | Creates a mapped PMD from a swapped entry (arch) |
> ---------------------------------------------------------------------------------
> -| is_migration_entry | Tests a migration (read or write) swapped entry |
> ---------------------------------------------------------------------------------
> -| is_write_migration_entry | Tests a write migration swapped entry |
> ---------------------------------------------------------------------------------
> -| make_migration_entry_read | Converts into read migration swapped entry |
> ---------------------------------------------------------------------------------
> -| make_migration_entry | Creates a migration swapped entry (read or write)|
> ---------------------------------------------------------------------------------
> +========================== =================================================
> +__pte_to_swp_entry Creates a swapped entry (arch) from a mapepd PTE
> +__swp_to_pte_entry Creates a mapped PTE from a swapped entry (arch)
> +__pmd_to_swp_entry Creates a swapped entry (arch) from a mapepd PMD
Couple of original typos here as well - s/mapepd/mapped. ^^^^^^^
> +__swp_to_pmd_entry Creates a mapped PMD from a swapped entry (arch)
> +is_migration_entry Tests a migration (read or write) swapped entry
> +is_write_migration_entry Tests a write migration swapped entry
> +make_migration_entry_read Converts into read migration swapped entry
> +make_migration_entry Creates a migration swapped entry (read or write)
> +========================== =================================================
>
> [1] https://lore.kernel.org/linux-mm/20181017020930.GN30832@redhat.com/
As this requires some typo fixes coming from the original patch, I could fold these
changes while adding your Signed-off-by: for relevant section and respin the series.
Please suggest.
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