From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Steven Price" <steven.price@arm.com>, "Andy Lutomirski" <luto@kernel.org>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Arnd Bergmann" <arnd@arndb.de>, "Borislav Petkov" <bp@alien8.de>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Ingo Molnar" <mingo@redhat.com>, "James Morse" <james.morse@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Peter Zijlstra" <peterz@infradead.org>, "Thomas Gleixner" <tglx@linutronix.de>, "Will Deacon" <will@kernel.org>, x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Mark Rutland" <Mark.Rutland@arm.com>, "Liang, Kan" <kan.liang@linux.intel.com>, "Andrew Morton" <akpm@linux-foundation.org> Subject: [PATCH v11 22/22] arm64: mm: Display non-present entries in ptdump Date: Mon, 7 Oct 2019 16:38:22 +0100 [thread overview] Message-ID: <20191007153822.16518-23-steven.price@arm.com> (raw) In-Reply-To: <20191007153822.16518-1-steven.price@arm.com> Previously the /sys/kernel/debug/kernel_page_tables file would only show lines for entries present in the page tables. However it is useful to also show non-present entries as this makes the size and level of the holes more visible. This aligns the behaviour with x86 which also shows holes. Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/mm/dump.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 9d9b740a86d2..3203dd8e6d0a 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -269,21 +269,22 @@ static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level, if (st->current_prot) { note_prot_uxn(st, addr); note_prot_wx(st, addr); - pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", + } + + pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", st->start_address, addr); - delta = (addr - st->start_address) >> 10; - while (!(delta & 1023) && unit[1]) { - delta >>= 10; - unit++; - } - pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, - pg_level[st->level].name); - if (pg_level[st->level].bits) - dump_prot(st, pg_level[st->level].bits, - pg_level[st->level].num); - pt_dump_seq_puts(st->seq, "\n"); + delta = (addr - st->start_address) >> 10; + while (!(delta & 1023) && unit[1]) { + delta >>= 10; + unit++; } + pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, + pg_level[st->level].name); + if (st->current_prot && pg_level[st->level].bits) + dump_prot(st, pg_level[st->level].bits, + pg_level[st->level].num); + pt_dump_seq_puts(st->seq, "\n"); if (addr >= st->marker[1].start_address) { st->marker++; -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Mark Rutland" <Mark.Rutland@arm.com>, x86@kernel.org, "Arnd Bergmann" <arnd@arndb.de>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Peter Zijlstra" <peterz@infradead.org>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, linux-kernel@vger.kernel.org, "Steven Price" <steven.price@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Ingo Molnar" <mingo@redhat.com>, "Borislav Petkov" <bp@alien8.de>, "Andy Lutomirski" <luto@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>, "James Morse" <james.morse@arm.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Will Deacon" <will@kernel.org>, "Andrew Morton" <akpm@linux-foundation.org>, linux-arm-kernel@lists.infradead.org, "Liang, Kan" <kan.liang@linux.intel.com> Subject: [PATCH v11 22/22] arm64: mm: Display non-present entries in ptdump Date: Mon, 7 Oct 2019 16:38:22 +0100 [thread overview] Message-ID: <20191007153822.16518-23-steven.price@arm.com> (raw) In-Reply-To: <20191007153822.16518-1-steven.price@arm.com> Previously the /sys/kernel/debug/kernel_page_tables file would only show lines for entries present in the page tables. However it is useful to also show non-present entries as this makes the size and level of the holes more visible. This aligns the behaviour with x86 which also shows holes. Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/mm/dump.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 9d9b740a86d2..3203dd8e6d0a 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -269,21 +269,22 @@ static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level, if (st->current_prot) { note_prot_uxn(st, addr); note_prot_wx(st, addr); - pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", + } + + pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", st->start_address, addr); - delta = (addr - st->start_address) >> 10; - while (!(delta & 1023) && unit[1]) { - delta >>= 10; - unit++; - } - pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, - pg_level[st->level].name); - if (pg_level[st->level].bits) - dump_prot(st, pg_level[st->level].bits, - pg_level[st->level].num); - pt_dump_seq_puts(st->seq, "\n"); + delta = (addr - st->start_address) >> 10; + while (!(delta & 1023) && unit[1]) { + delta >>= 10; + unit++; } + pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, + pg_level[st->level].name); + if (st->current_prot && pg_level[st->level].bits) + dump_prot(st, pg_level[st->level].bits, + pg_level[st->level].num); + pt_dump_seq_puts(st->seq, "\n"); if (addr >= st->marker[1].start_address) { st->marker++; -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-10-07 15:39 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-07 15:38 [PATCH v11 00/22] Generic page walk and ptdump Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 01/22] mm: Add generic p?d_leaf() macros Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 02/22] arc: mm: Add p?d_leaf() definitions Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-08 20:19 ` Vineet Gupta 2019-10-08 20:19 ` Vineet Gupta 2019-10-07 15:38 ` [PATCH v11 03/22] arm: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 04/22] arm64: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 05/22] mips: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 06/22] powerpc: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 07/22] riscv: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-08 11:31 ` Alex Ghiti 2019-10-08 11:31 ` Alex Ghiti 2019-10-08 11:31 ` Alex Ghiti 2019-10-08 21:33 ` Paul Walmsley 2019-10-08 21:33 ` Paul Walmsley 2019-10-08 21:33 ` Paul Walmsley 2019-10-09 10:55 ` Steven Price 2019-10-09 10:55 ` Steven Price 2019-10-09 10:55 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 08/22] s390: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 09/22] sparc: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 10/22] x86: " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 11/22] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 12/22] mm: pagewalk: Allow walking without vma Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 13/22] mm: pagewalk: Add test_p?d callbacks Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 14/22] mm: pagewalk: Add 'depth' parameter to pte_hole Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 16:10 ` Jason Gunthorpe 2019-10-07 16:10 ` Jason Gunthorpe 2019-10-07 16:20 ` Steven Price 2019-10-07 16:20 ` Steven Price 2019-10-07 18:11 ` Jason Gunthorpe 2019-10-07 18:11 ` Jason Gunthorpe 2019-10-09 11:00 ` Steven Price 2019-10-09 11:00 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 15/22] x86: mm: Point to struct seq_file from struct pg_state Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 16/22] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 17/22] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 18/22] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 19/22] mm: Add generic ptdump Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 20/22] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` [PATCH v11 21/22] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price 2019-10-07 15:38 ` Steven Price 2019-10-07 15:38 ` Steven Price [this message] 2019-10-07 15:38 ` [PATCH v11 22/22] arm64: mm: Display non-present entries in ptdump Steven Price
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20191007153822.16518-23-steven.price@arm.com \ --to=steven.price@arm.com \ --cc=Mark.Rutland@arm.com \ --cc=akpm@linux-foundation.org \ --cc=ard.biesheuvel@linaro.org \ --cc=arnd@arndb.de \ --cc=bp@alien8.de \ --cc=catalin.marinas@arm.com \ --cc=dave.hansen@linux.intel.com \ --cc=hpa@zytor.com \ --cc=james.morse@arm.com \ --cc=jglisse@redhat.com \ --cc=kan.liang@linux.intel.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=luto@kernel.org \ --cc=mingo@redhat.com \ --cc=peterz@infradead.org \ --cc=tglx@linutronix.de \ --cc=will@kernel.org \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.