Merge branch 'master' of https://github.com/shihyu/linux_kernel_driver

Author: jason_yao

data/Linux Kernel and Driver Development Training.pdf

@@ -21,14 +21,16 @@ static int sample_read_proc(char *page, char **start, off_t off,
 {
 	int len;
 
+    dump_stack();
+
 	printk("page=%p *start=%p off=%d count=%d *eof=%d data=%p\n",
 			page, *start, (int)off, count, *eof, data);
 
 	len = DUMMY_BUFSIZ;
 	if (len > PAGE_SIZE)
 		return -ENOBUFS;
 
-	memcpy(page, dummy, len);
+	memcpy(page, dummy, len);  // dump 內容ABC~Z, totoal 4096byte 存放到page , user space 在讀取page , len = 4096
 	*eof = 1;
 
 	printk("len=%d (%s)\n", len, __func__);

data/Linux內核調試方法的總結.pdf

@@ -21,6 +21,7 @@ __attribute__((section("__versions"))) = {
 	{ 0xa60f9d25, "remove_proc_entry" },
 	{ 0x27e1a049, "printk" },
 	{ 0xb4390f9a, "mcount" },
+	{ 0x6b2dc060, "dump_stack" },
 	{ 0x3021c756, "create_proc_entry" },
 };
 
@@ -30,4 +31,4 @@ __attribute__((section(".modinfo"))) =
 "depends=";
 
 
-MODULE_INFO(srcversion, "5B9CEEAABF5230A3560AB56");
+MODULE_INFO(srcversion, "406DAC495A7B01F2D55D24A");

example/LDDP_JP/TW-samples/chap6/procfs/main.c

@@ -0,0 +1 @@
+cmd_/home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.ko := ld -r -m elf_x86_64 -T /usr/src/linux-headers-3.2.0-64-generic/scripts/module-common.lds --build-id  -o /home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.ko /home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.o /home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.mod.o

example/LDDP_JP/TW-samples/chap6/procfs/sample.ko

@@ -0,0 +1 @@
+cmd_/home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.o := ld -m elf_x86_64   -r -o /home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.o /home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/main.o 

example/LDDP_JP/TW-samples/chap6/procfs/sample.mod.c

@@ -0,0 +1,2 @@
+/home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/sample.ko
+/home/jason-yao/data/linux_kernel_driver/example/LDDP_JP/TW-samples/chap6/procfs2/main.o