list/rbtree遍历进程虚拟地址空间vm_area_struct的学习代码中增加了输出文件映射的代码print_vm_file--驱动print_vmarea

study/kernel/01-process/01-task/print_task/Makefile

@@ -16,3 +16,17 @@ clean:
 
 
 endif
+
+
+
+insmod:
+	sudo insmod ./print_task.ko
+
+rmmod:
+	sudo rmmod print_task
+
+reinsmod:
+	make rmmod
+	make insmod
+
+

study/kernel/01-process/01-task/print_task/print_task.c

@@ -7,6 +7,20 @@
 #include <linux/mm.h>
 #include <linux/mm_types.h>
 
+
+#include <linux/sched.h>
+#include <linux/sched/rt.h>
+
+
+
+#if !defined(NICE_TO_PRIO)
+#define NICE_TO_PRIO(nice)      ((nice) + DEFAULT_PRIO)
+#endif
+
+#if !defined(PRIO_TO_NICE)
+#define PRIO_TO_NICE(prio)      ((prio) - DEFAULT_PRIO)
+#endif
+
 #ifndef offsetof
 #define offsetof(type, field)   ((long) &((type *)0)->field)
 #endif   /* offsetof */
@@ -21,12 +35,78 @@
 static int pid = 1;
 module_param(pid,int,0644);
 
-static void print_task_struct(struct task_struct *ptask)
-{
 
+static inline int print_task_policy(int policy)
+{
+    printk("POLICY = ");
+    switch(policy)
+    {
+        case SCHED_FIFO     :
+            printk("Real-Time FIFO SCHEDULER TASK\n");
+            break;
+        case SCHED_RR       :
+            printk("Real-Time RR SCHEDULER TASK\n");
+            break;
+        case SCHED_DEADLINE :
+            printk("Real-Time EDF SCHEDULER TASK\n");
+            break;
+        case SCHED_NORMAL   :
+            printk("Normal NORMAL SCHEDULER TASK\n");
+            break;
+        case SCHED_BATCH    :
+            printk("Normal BATCH SCHEDULER TASK\n");
+            break;
+        case SCHED_IDLE     :
+            printk("IDLE SCHEDULER TASK\n");
+            break;
+    }
+
+
+    return policy;
 }
 
 
+
+void print_task_sched_class(struct sched_class  *schedclass)
+{
+    switch(sched_class)
+    {
+        case &rt_
+    }
+}
+
+void print_task_priority(struct task_struct *ptask)
+{
+    //  priority
+    if(rt_task(ptask) == 1)
+    {
+        printk("Real Time Process\n");
+        printk("rt_priority = %d\n", ptask->rt_priority);
+    }
+    else
+    {
+        printk("Normal Process\n");
+        printk("static prio = %d, NICE(%d)\n", ptask->static_prio, PRIO_TO_NICE(ptask->static_prio));
+    }
+    printk("normal_prio = %d\n", ptask->normal_prio);
+    printk("prio = %d\n", ptask->prio);
+}
+
+
+
+
+void print_task_struct(struct task_struct *ptask)
+{
+    printk("flag = 0x%x\n", ptask->flags);
+    //  priority
+    print_task_priority(ptask);
+
+    //  policy
+    print_task_policy(ptask->policy);
+}
+
+
+
 static void print_task(int pid)
 {
 	struct task_struct *ptask;
@@ -35,7 +115,7 @@ static void print_task(int pid)
 	k = find_vpid(pid);
 	ptask = pid_task(k, PIDTYPE_PID);
 
-    print_task_struct(task);
+    print_task_struct(ptask);
 
 
     return ;

study/kernel/memory/kv2p/.kv2p.ko.cmd

@@ -0,0 +1 @@
+cmd_/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.ko := aarch64-linux-gnu-ld -EL -r  -T /usr/src/linux-headers-3.14.0-20150821.kylin.3.desktop/scripts/module-common.lds --build-id  -o /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.ko /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.o /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.mod.o

study/kernel/memory/kv2p/.tmp_versions/kv2p.mod

@@ -0,0 +1,2 @@
+/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.ko
+/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.o

study/kernel/memory/kv2p/Makefile

@@ -1,7 +1,9 @@
-
+ifneq ($(KERNELRELEASE),)
 
 obj-m := kv2p.o
 
+else
+
 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
 
 PWD := $(shell pwd)
@@ -12,3 +14,19 @@ all:
 clean:
 	make -C $(KERNELDIR) M=$(PWD) clean
 
+
+endif
+
+
+
+insmod:
+	sudo insmod ./kv2p.ko
+
+rmmod:
+	sudo rmmod kv2p
+
+reinsmod:
+	make rmmod
+	make insmod
+
+

study/kernel/memory/kv2p/kv2p.c

@@ -6,7 +6,7 @@ va 接收待查询的虚拟地址
 *****************************************************************/
 
 
-#include  <linux/module.h>
+#include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/sched.h>
@@ -22,13 +22,14 @@ module_param(VA, ulong, 0644);
 
 
 
-static int __init kv2p_init( )
+static int __init kv2p_init(void)
 {
+    int value = 10;
     // use virt_to_phys
     // http://lxr.free-electrons.com/source/arch/arm64/include/asm/memory.h?v4.7#L189
-    //
-    virt_to_phys(VA);
 
+    phys_addr_t phyaddr = virt_to_phys((const volatile void *)&value);
+    printk("0x%lx\n", (unsigned long )phyaddr);
 
     return 0;
 }

study/kernel/memory/kv2p/kv2p.mod.c

@@ -0,0 +1,30 @@
+#include <linux/module.h>
+#include <linux/vermagic.h>
+#include <linux/compiler.h>
+
+MODULE_INFO(vermagic, VERMAGIC_STRING);
+
+__visible struct module __this_module
+__attribute__((section(".gnu.linkonce.this_module"))) = {
+	.name = KBUILD_MODNAME,
+	.init = init_module,
+#ifdef CONFIG_MODULE_UNLOAD
+	.exit = cleanup_module,
+#endif
+	.arch = MODULE_ARCH_INIT,
+};
+
+static const struct modversion_info ____versions[]
+__used
+__attribute__((section("__versions"))) = {
+	{ 0x146be775, __VMLINUX_SYMBOL_STR(module_layout) },
+	{ 0x8d2e268b, __VMLINUX_SYMBOL_STR(param_ops_ulong) },
+	{ 0x27e1a049, __VMLINUX_SYMBOL_STR(printk) },
+	{ 0xf8e398fc, __VMLINUX_SYMBOL_STR(memstart_addr) },
+};
+
+static const char __module_depends[]
+__used
+__attribute__((section(".modinfo"))) =
+"depends=";
+

study/kernel/memory/kv2p/modules.order

@@ -0,0 +1 @@
+kernel//home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/memory/kv2p/kv2p.ko