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Platforms subscribe into generic ptdump implementation via GENERIC_PTDUMP. But generic ptdump gets enabled via PTDUMP_CORE. These configs combination is confusing as they sound very similar and does not differentiate between platform's feature subscription and feature enablement for ptdump. Rename the configs as ARCH_HAS_PTDUMP and PTDUMP making it more clear and improve readability. Link: https://lkml.kernel.org/r/20250226122404.1927473-6-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> (powerpc) Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Cc: Will Deacon <will@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <maz@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Steven Price <steven.price@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014 ARM Ltd.
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*/
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#ifndef __ASM_PTDUMP_H
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#define __ASM_PTDUMP_H
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#include <linux/ptdump.h>
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#ifdef CONFIG_PTDUMP
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#include <linux/mm_types.h>
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#include <linux/seq_file.h>
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struct addr_marker {
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unsigned long start_address;
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char *name;
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};
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struct ptdump_info {
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struct mm_struct *mm;
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const struct addr_marker *markers;
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unsigned long base_addr;
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};
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struct ptdump_prot_bits {
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u64 mask;
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u64 val;
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const char *set;
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const char *clear;
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};
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struct ptdump_pg_level {
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const struct ptdump_prot_bits *bits;
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char name[4];
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int num;
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u64 mask;
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};
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/*
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* The page dumper groups page table entries of the same type into a single
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* description. It uses pg_state to track the range information while
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* iterating over the pte entries. When the continuity is broken it then
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* dumps out a description of the range.
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*/
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struct ptdump_pg_state {
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struct ptdump_state ptdump;
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struct ptdump_pg_level *pg_level;
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struct seq_file *seq;
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const struct addr_marker *marker;
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const struct mm_struct *mm;
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unsigned long start_address;
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int level;
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u64 current_prot;
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bool check_wx;
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unsigned long wx_pages;
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unsigned long uxn_pages;
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};
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void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
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void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
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u64 val);
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#ifdef CONFIG_PTDUMP_DEBUGFS
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#define EFI_RUNTIME_MAP_END DEFAULT_MAP_WINDOW_64
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void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
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#else
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static inline void ptdump_debugfs_register(struct ptdump_info *info,
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const char *name) { }
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#endif /* CONFIG_PTDUMP_DEBUGFS */
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#else
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static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
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int level, u64 val) { }
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#endif /* CONFIG_PTDUMP */
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#endif /* __ASM_PTDUMP_H */
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