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Date: Tue, 7 Jul 2020 18:07:40 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: 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: Anshuman Khandual <anshuman.khandual@....com>,
Mike Rapoport <rppt@...nel.org>,
"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: [PATCH -next] Documentation/vm: fix tables in arch_pgtable_helpers
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
+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 |
---------------------------------------------------------------------------------
-| __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
+__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/
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