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Commit 88b584ac authored by alex.zhang's avatar alex.zhang Committed by Chunlei Wang
Browse files

[ALPS05478433] hang: dump vold 



dump vold and if process insert white list, we will dump it

MTK-Commit-Id: 7dd1df7c4f6513c65540bf2a792e21f5db9eaf72

Change-Id: I98d5b33e64a0cdfd4db6fab4d849e0c8c9089908
Signed-off-by: default avataralex.zhang <alex.zhang@mediatek.com>
CR-Id: ALPS05478433
Feature: Android Exception Engine(AEE)
parent e8562c44

drivers/misc/mediatek/monitor_hang/monitor_hang.c

+45 −34
Original line number Diff line number Diff line
@@ -1264,6 +1264,7 @@ static int DumpThreadNativeMaps(pid_t pid, struct task_struct *current_task) 
	char tpath[512];

	char *path_p = NULL;

	struct path base_path;

	unsigned long long pgoff = 0;



	if (!current_task)

		return -ESRCH;
@@ -1288,6 +1289,7 @@ static int DumpThreadNativeMaps(pid_t pid, struct task_struct *current_task) 
	while (vma && (mapcount < current_task->mm->map_count)) {

		file = vma->vm_file;

		flags = vma->vm_flags;

		pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;

		if (file) {	/* !!!!!!!!only dump 1st mmaps!!!!!!!!!!!! */

			if (flags & VM_EXEC) {

				/* we only catch code section for reduce
@@ -1295,20 +1297,20 @@ static int DumpThreadNativeMaps(pid_t pid, struct task_struct *current_task) 
				 */

				base_path = file->f_path;

				path_p = d_path(&base_path, tpath, 512);

				Log2HangInfo("%08lx-%08lx %c%c%c%c    %s\n",

				Log2HangInfo("%08lx-%08lx %c%c%c%c %08llx %s\n",

					vma->vm_start, vma->vm_end,

					flags & VM_READ ? 'r' : '-',

					flags & VM_WRITE ? 'w' : '-',

					flags & VM_EXEC ? 'x' : '-',

					flags & VM_MAYSHARE ? 's' : 'p',

					path_p);

				hang_log("%08lx-%08lx %c%c%c%c    %s\n",

					pgoff, path_p);

				hang_log("%08lx-%08lx %c%c%c%c %08llx %s\n",

					vma->vm_start, vma->vm_end,

					flags & VM_READ ? 'r' : '-',

					flags & VM_WRITE ? 'w' : '-',

					flags & VM_EXEC ? 'x' : '-',

					flags & VM_MAYSHARE ? 's' : 'p',

					path_p);

					pgoff, path_p);

			}

		} else {

#ifdef MODULE
@@ -1334,18 +1336,18 @@ static int DumpThreadNativeMaps(pid_t pid, struct task_struct *current_task) 
			}



			if (flags & VM_EXEC) {

				Log2HangInfo("%08lx-%08lx %c%c%c%c %s\n",

				Log2HangInfo("%08lx-%08lx %c%c%c%c %08llx %s\n",

					vma->vm_start, vma->vm_end,

					flags & VM_READ ? 'r' : '-',

					flags & VM_WRITE ? 'w' : '-',

					flags & VM_EXEC ? 'x' : '-',

					flags & VM_MAYSHARE ? 's' : 'p', name);

				hang_log("%08lx-%08lx %c%c%c%c %s\n",

					flags & VM_MAYSHARE ? 's' : 'p', pgoff, name);

				hang_log("%08lx-%08lx %c%c%c%c %08llx %s\n",

					vma->vm_start, vma->vm_end,

					flags & VM_READ ? 'r' : '-',

					flags & VM_WRITE ? 'w' : '-',

					flags & VM_EXEC ? 'x' : '-',

					flags & VM_MAYSHARE ? 's' : 'p', name);

					flags & VM_MAYSHARE ? 's' : 'p', pgoff,  name);

			}

		}

		vma = vma->vm_next;
@@ -1381,16 +1383,16 @@ static int DumpThreadNativeInfo_By_tid(pid_t tid, 
		return ret;

	}

#ifndef __aarch64__		/* 32bit */

	Log2HangInfo(" pc/lr/sp 0x%08lx/0x%08lx/0x%08lx\n", user_ret->ARM_pc,

	Log2HangInfo(" pc/lr/sp 0x%08x/0x%08x/0x%08x\n", user_ret->ARM_pc,

			user_ret->ARM_lr, user_ret->ARM_sp);

	Log2HangInfo("r12-r0 0x%lx/0x%x/0x%lx/0x%lx\n",

	Log2HangInfo("r12-r0 0x%08x/0x%08x/0x%08x/0x%08x\n",

		(long)(user_ret->ARM_ip), (long)(user_ret->ARM_fp),

		(long)(user_ret->ARM_r10), (long)(user_ret->ARM_r9));

	Log2HangInfo("0x%lx/0x%lx/0x%lx/0x%lx/0x%lx\n",

	Log2HangInfo("0x%08x/0x%08x/0x%08x/0x%08x/0x%08x\n",

		(long)(user_ret->ARM_r8), (long)(user_ret->ARM_r7),

		(long)(user_ret->ARM_r6), (long)(user_ret->ARM_r5),

		(long)(user_ret->ARM_r4));

	Log2HangInfo("0x%lx/0x%lx/0x%lx/0x%lx\n",

	Log2HangInfo("0x%08x/0x%08x/0x%08x/0x%08x\n",

		(long)(user_ret->ARM_r3), (long)(user_ret->ARM_r2),

		(long)(user_ret->ARM_r1), (long)(user_ret->ARM_r0));
@@ -1425,7 +1427,7 @@ static int DumpThreadNativeInfo_By_tid(pid_t tid, 


		SPStart = userstack_start;

		SPEnd = SPStart + length;

		Log2HangInfo("UserSP_start:%x,Length:%x,End:%x\n",

		Log2HangInfo("UserSP_start:%08x,Length:%x,End:%08x\n",

				SPStart, length, SPEnd);

		while (SPStart < SPEnd) {

			copied =
@@ -1442,7 +1444,7 @@ static int DumpThreadNativeInfo_By_tid(pid_t tid, 
				tempSpContent[1] != 0 ||

				tempSpContent[2] != 0 ||

				tempSpContent[3] != 0) {

				Log2HangInfo("%08x:%x %x %x %x\n", SPStart,

				Log2HangInfo("%08x:%08x %08x %08x %08x\n", SPStart,

						tempSpContent[0],

						tempSpContent[1],

						tempSpContent[2],
@@ -1688,6 +1690,27 @@ static void show_bt_by_pid(int task_pid) 
	put_pid(pid);

}



static int show_white_list_bt(struct task_struct *p)

{

	struct name_list *pList = NULL;



	if (!white_list)

		return -1;

	raw_spin_lock(&white_list_lock);

	pList = white_list;

	while (pList) {

		if (!strcmp(p->comm, pList->name)) {

			raw_spin_unlock(&white_list_lock);

			show_bt_by_pid(p->pid);

			return 0;

		}

		pList = pList->next;

	}

	raw_spin_unlock(&white_list_lock);

	return -1;

}





static void hang_dump_backtrace(void)

{

	struct task_struct *p, *t, *system_server_task = NULL;
@@ -1700,11 +1723,7 @@ static void hang_dump_backtrace(void) 
#endif

	Log2HangInfo("dump backtrace start: %llu\n", local_clock());



#ifdef MODULE

	read_lock(Ptasklist_lock);

#else

	read_lock(&tasklist_lock);

#endif

	rcu_read_lock();

	for_each_process(p) {

		get_task_struct(p);

		if (Hang_Detect_first == false) {
@@ -1722,19 +1741,15 @@ static void hang_dump_backtrace(void) 
			!strcmp(p->comm, "mmcqd/0")  ||

			!strcmp(p->comm, "debuggerd64") ||

			!strcmp(p->comm, "mmcqd/1") ||

			!strcmp(p->comm, "vold") ||

			!strcmp(p->comm, "vdc") ||

			!strcmp(p->comm, "debuggerd")) {

#ifdef MODULE

			read_unlock(Ptasklist_lock);

#else

			read_unlock(&tasklist_lock);

#endif

			show_bt_by_pid(p->pid);

#ifdef MODULE

			read_lock(Ptasklist_lock);

#else

			read_lock(&tasklist_lock);

#endif

			put_task_struct(p);

			continue;

		}

		//test if there's any process need dump

		if (!show_white_list_bt(p)) {

			put_task_struct(p);

			continue;

		}
@@ -1752,11 +1767,7 @@ static void hang_dump_backtrace(void) 
		}

		put_task_struct(p);

	}

#ifdef MODULE

	read_unlock(Ptasklist_lock);

#else

	read_unlock(&tasklist_lock);

#endif

	rcu_read_unlock();

	Log2HangInfo("dump backtrace end.\n");



	if (Hang_Detect_first == false) {