From: guoren@kernel.org
To: guoren@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH 13/29] csky: Add show_tlb for CPU_CK860 debug
Date: Thu, 21 Jan 2021 14:53:33 +0800 [thread overview]
Message-ID: <20210121065349.3188251-13-guoren@kernel.org> (raw)
In-Reply-To: <20210121065349.3188251-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Print all 1024 jtlb entries and 16 iutlb entries and 16 dutlb
entries in show_regs.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
---
arch/csky/kernel/ptrace.c | 121 ++++++++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c
index e5bd4e01b861..417b759fab6c 100644
--- a/arch/csky/kernel/ptrace.c
+++ b/arch/csky/kernel/ptrace.c
@@ -22,6 +22,7 @@
#include <asm/asm-offsets.h>
#include <abi/regdef.h>
+#include <abi/ckmmu.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
@@ -343,6 +344,124 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs)
trace_sys_exit(regs, syscall_get_return_value(current, regs));
}
+#ifdef CONFIG_CPU_CK860
+static void show_iutlb(void)
+{
+ int entry, i;
+ unsigned long flags;
+ unsigned long oldpid;
+ unsigned long entryhi[16], entrylo0[16], entrylo1[16];
+
+ oldpid = read_mmu_entryhi();
+
+ entry = 0x8000;
+
+ local_irq_save(flags);
+
+ for (i = 0; i < 16; i++) {
+ write_mmu_index(entry);
+ tlb_read();
+ entryhi[i] = read_mmu_entryhi();
+ entrylo0[i] = read_mmu_entrylo0();
+ entrylo1[i] = read_mmu_entrylo1();
+
+ entry++;
+ }
+
+ local_irq_restore(flags);
+
+ write_mmu_entryhi(oldpid);
+
+ printk("\n\n\n");
+ for (i = 0; i < 16; i++)
+ printk("iutlb[%d]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
+ " entrylo1 - 0x%lx\n",
+ i, entryhi[i], entrylo0[i], entrylo1[i]);
+ printk("\n\n\n");
+}
+
+static void show_dutlb(void)
+{
+ int entry, i;
+ unsigned long flags;
+ unsigned long oldpid;
+ unsigned long entryhi[16], entrylo0[16], entrylo1[16];
+
+ oldpid = read_mmu_entryhi();
+
+ entry = 0x4000;
+
+ local_irq_save(flags);
+
+ for (i = 0; i < 16; i++) {
+ write_mmu_index(entry);
+ tlb_read();
+ entryhi[i] = read_mmu_entryhi();
+ entrylo0[i] = read_mmu_entrylo0();
+ entrylo1[i] = read_mmu_entrylo1();
+
+ entry++;
+ }
+
+ local_irq_restore(flags);
+
+ write_mmu_entryhi(oldpid);
+
+ printk("\n\n\n");
+ for (i = 0; i < 16; i++)
+ printk("dutlb[%d]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
+ " entrylo1 - 0x%lx\n",
+ i, entryhi[i], entrylo0[i], entrylo1[i]);
+ printk("\n\n\n");
+}
+
+static unsigned long entryhi[1024], entrylo0[1024], entrylo1[1024];
+static void show_jtlb(void)
+{
+ int entry;
+ unsigned long flags;
+ unsigned long oldpid;
+
+ oldpid = read_mmu_entryhi();
+
+ entry = 0;
+
+ local_irq_save(flags);
+ while (entry < 1024) {
+ write_mmu_index(entry);
+ tlb_read();
+ entryhi[entry] = read_mmu_entryhi();
+ entrylo0[entry] = read_mmu_entrylo0();
+ entrylo1[entry] = read_mmu_entrylo1();
+
+ entry++;
+ }
+ local_irq_restore(flags);
+
+ write_mmu_entryhi(oldpid);
+
+ printk("\n\n\n");
+
+ for (entry = 0; entry < 1024; entry++)
+ printk("jtlb[%x]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
+ " entrylo1 - 0x%lx\n",
+ entry, entryhi[entry], entrylo0[entry], entrylo1[entry]);
+ printk("\n\n\n");
+}
+
+static void show_tlb(void)
+{
+ show_iutlb();
+ show_dutlb();
+ show_jtlb();
+}
+#else
+static void show_tlb(void)
+{
+ return;
+}
+#endif
+
void show_regs(struct pt_regs *fp)
{
pr_info("\nCURRENT PROCESS:\n\n");
@@ -396,5 +515,7 @@ void show_regs(struct pt_regs *fp)
fp->regs[8], fp->regs[9]);
#endif
+ show_tlb();
+
return;
}
--
2.17.1
next prev parent reply other threads:[~2021-01-21 7:49 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 6:53 [PATCH 01/29] csky: Add memory layout 2.5G(user):1.5G(kernel) guoren
2021-01-21 6:53 ` [PATCH 02/29] csky: Fixup perf probe failed guoren
2021-01-21 6:53 ` [PATCH 03/29] csky: Fixup show_regs doesn't contain regs->usp guoren
2021-01-21 6:53 ` [PATCH 04/29] csky: Remove custom asm/atomic.h implementation guoren
2021-01-21 6:53 ` [PATCH 05/29] csky: Fixup barrier design guoren
2021-01-21 6:53 ` [PATCH 06/29] csky: Fixup futex SMP implementation guoren
2021-01-21 6:53 ` [PATCH 07/29] csky: Fixup asm/cmpxchg.h with correct ordering barrier guoren
2021-01-21 6:53 ` [PATCH 08/29] csky: Cleanup asm/spinlock.h guoren
2021-01-21 6:53 ` [PATCH 09/29] csky: Fixup PTE global for 2.5:1.5 virtual memory guoren
2021-01-21 6:53 ` [PATCH 10/29] csky: Remove prologue of page fault handler in entry.S guoren
2021-01-21 6:53 ` [PATCH 11/29] csky: Add kmemleak support guoren
2021-01-21 6:53 ` [PATCH 12/29] csky: Fix TLB maintenance synchronization problem guoren
2021-01-21 6:53 ` guoren [this message]
2021-01-21 6:53 ` [PATCH 14/29] csky: Fixup FAULT_FLAG_XXX param for handle_mm_fault guoren
2021-01-21 6:53 ` [PATCH 15/29] csky: Fixup update_mmu_cache called with user io mapping guoren
2021-01-21 6:53 ` [PATCH 16/29] csky: Add faulthandler_disabled() check guoren
2021-01-21 6:53 ` [PATCH 17/29] csky: Fixup do_page_fault parent irq status guoren
2021-01-21 6:53 ` [PATCH 18/29] csky: Sync riscv mm/fault.c for easy maintenance guoren
2021-01-21 6:53 ` [PATCH 19/29] csky: mm: abort uaccess retries upon fatal signal guoren
2021-01-21 11:42 ` Mark Rutland
2021-01-21 6:53 ` [PATCH 20/29] csky: Reconstruct VDSO framework guoren
2021-01-21 6:53 ` [PATCH 21/29] csky: Fix a size determination in gpr_get() guoren
2021-01-21 6:53 ` [PATCH 22/29] csky: remove unused including <linux/version.h> guoren
2021-01-21 6:53 ` [PATCH 23/29] csky: Fixup _PAGE_ACCESSED for default pgprot guoren
2021-01-21 6:53 ` [PATCH 24/29] csky: Coding convention del unnecessary definition guoren
2021-01-21 6:53 ` [PATCH 25/29] csky: Fixup swapon guoren
2021-01-21 6:53 ` [PATCH 26/29] csky: kprobe: fix code in simulate without 'long' guoren
2021-01-21 6:53 ` [PATCH 27/29] csky: Add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO guoren
2021-01-21 6:53 ` [PATCH 28/29] csky: Using set_max_mapnr api guoren
2021-01-21 6:53 ` [PATCH 29/29] csky: Fixup pfn_valid error with wrong max_mapnr guoren
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