[kgtp] r930 committed - Adding hotcode
- From: kgtp@xxxxxxxxxxxxxx
- To: kgtp@xxxxxxxxxxxxx
- Date: Wed, 22 Feb 2012 16:31:05 +0000
Revision: 930
Author: teawater
Date: Wed Feb 22 08:29:49 2012
Log: Adding hotcode
http://code.google.com/p/kgtp/source/detail?r=930
Modified:
/branches/hotcode/hotcode.py
=======================================
--- /branches/hotcode/hotcode.py Wed Feb 22 06:15:39 2012
+++ /branches/hotcode/hotcode.py Wed Feb 22 08:29:49 2012
@@ -24,8 +24,12 @@
if s[0:1] != 'n' and s[0:1] != 'N':
return;
#gdb.execute("inferior 1")
- gdb.execute("target remote /sys/kernel/debug/gtp", True, False)
- gdb.execute("set disconnected-tracing off", True, False)
+ try:
+ gdb.execute("tfind -1", True, False)
+ gdb.execute("target remote /sys/kernel/debug/gtp", True, False)
+ gdb.execute("set disconnected-tracing off", True, False)
+ except:
+ print "Try to stop GTP got error, please use command \"sudo rmmod
gtp.ko\" stop it."
exit(1);
def add_inferior():
@@ -35,6 +39,55 @@
fid = int(fid[len("Added inferior "):])
return fid
+def get_addr_range_list(fun):
+ buf = gdb.execute("info line "+fun, False, True)
+ line_list = buf.split(os.linesep)
+ ret = []
+ begin = -1
+ end = -1
+ for line in line_list:
+ addr_begin = line.find("starts at address ")
+ if addr_begin >= 0:
+ line = line[addr_begin + len("starts at address "):]
+ addr_end = line.find(" <"+fun)
+ if addr_end >= 0:
+ begin = int(line[:addr_end], 0)
+ line = line[addr_end + len(" <"+fun):]
+ addr_begin = line.find("ends at ")
+ if addr_begin >= 0:
+ line = line[addr_begin + len("ends at "):]
+ addr_end = line.find(" <"+fun)
+ if addr_end > 0:
+ end = int(line[:addr_end], 0)
+ if begin != -1:
+ ret.append([begin, end])
+ begin = -1
+ end = -1
+
+ if len(ret) > 0:
+ buf = gdb.execute("disassemble "+fun, False, True)
+ line_list = buf.split(os.linesep)
+ line_list.reverse()
+ end = 0
+ for line in line_list:
+ addr_begin = line.find("0x")
+ if addr_begin >= 0:
+ line = line[addr_begin:]
+ addr_end = line.find(" <+")
+ if addr_end > 0:
+ end = int(line[:addr_end], 0) + 1
+ break
+ if end != 0:
+ offset = 0
+ for c in ret:
+ if c[1] < end:
+ if offset == 0 or offset > (end - c[1]):
+ offset = end - c[1]
+ for c in ret:
+ c[1] += offset
+
+ return ret
+
#0 inferior_id 1 dir_name 2 kernel_list 3 user_list
task_list = {}
no_task = False
@@ -159,10 +212,27 @@
gdb.execute("inferior 1")
task_list[pid] = (fid, user_dir, {}, {})
+ignore_str = ""
if len(task_list) == 0:
trace_user = False
trace_kernel = True
no_task = True
+ #ignore arch_local_irq_enable
+ try:
+ s = raw_input('Do you want to ignore function \"arch_local_irq_enable\"?
(yes)')
+ except:
+ s = 'y'
+ if s[0:1] != 'n' and s[0:1] != 'N':
+ r_list = get_addr_range_list("arch_local_irq_enable")
+ for r in r_list:
+ if ignore_str != "":
+ ignore_str += " && "
+ else:
+ ignore_str += "&& ("
+ #regs->ip < r[0] || regs->ip > r[1]
+ ignore_str += "(regs->ip < "+str(r[0])+" || regs->ip >
"+str(r[1])+")"
+ if ignore_str != "":
+ ignore_str += ")"
#Set tracepoint
gdb.execute("target remote /sys/kernel/debug/gtp", True, False)
@@ -192,7 +262,7 @@
if pid_str != "":
cond_str += "&&"
cond_str = " ((regs->cs & 3) == 3)"
-tempfile.write("condition $bpnum "+pid_str+cond_str+"\n")
+tempfile.write("condition $bpnum "+pid_str+cond_str+ignore_str+"\n")
tempfile.write("commands\n")
if no_task:
tempfile.write("collect $no_self_trace\n")
@@ -203,6 +273,10 @@
tempfile.write("collect $current_task_pid\n")
tempfile.write("end\n")
tempfile.close()
+tempfile = open(tempfilename, "r")
+print "Tracepoint command:"
+print tempfile.read()
+tempfile.close()
gdb.execute("source "+tempfilename, True, False)
os.remove(tempfilename)
gdb.execute("set disconnected-tracing on", True, False)
@@ -250,6 +324,8 @@
filename_offset = sym.find(" of ")
if filename_offset > 0:
function += sym[filename_offset:]
+ if (function == "arch_local_irq_enable"):
+ print gdb.parse_and_eval("regs->ip - 1")
task_list_add_function(is_user, pid, function)
except gdb.error, x:
print("Drop one entry because", x)
Other related posts:
- » [kgtp] r930 committed - Adding hotcode - kgtp
