[memleak] add parameter for specifying object to load malloc/free from
diff --git a/tools/memleak.py b/tools/memleak.py
index 04f0fea..80cef08 100755
--- a/tools/memleak.py
+++ b/tools/memleak.py
@@ -135,6 +135,8 @@
help="capture only allocations larger than this size")
parser.add_argument("-Z", "--max-size", type=int,
help="capture only allocations smaller than this size")
+parser.add_argument("-O", "--obj", type=str, default="c",
+ help="attach to malloc & free in the specified object")
args = parser.parse_args()
@@ -149,6 +151,7 @@
top_stacks = args.top
min_size = args.min_size
max_size = args.max_size
+obj = args.obj
if min_size is not None and max_size is not None and min_size > max_size:
print("min_size (-z) can't be greater than max_size (-Z)")
@@ -251,11 +254,11 @@
if not kernel_trace:
print("Attaching to malloc and free in pid %d, Ctrl+C to quit." % pid)
- bpf_program.attach_uprobe(name="c", sym="malloc",
+ bpf_program.attach_uprobe(name=obj, sym="malloc",
fn_name="alloc_enter", pid=pid)
- bpf_program.attach_uretprobe(name="c", sym="malloc",
+ bpf_program.attach_uretprobe(name=obj, sym="malloc",
fn_name="alloc_exit", pid=pid)
- bpf_program.attach_uprobe(name="c", sym="free",
+ bpf_program.attach_uprobe(name=obj, sym="free",
fn_name="free_enter", pid=pid)
else:
print("Attaching to kmalloc and kfree, Ctrl+C to quit.")
diff --git a/tools/memleak_example.txt b/tools/memleak_example.txt
index d8df388..5b6f8d4 100644
--- a/tools/memleak_example.txt
+++ b/tools/memleak_example.txt
@@ -150,14 +150,16 @@
USAGE message:
# ./memleak -h
-usage: memleak [-h] [-p PID] [-t] [-a] [-o OLDER] [-c COMMAND]
- [-s SAMPLE_RATE] [-d STACK_DEPTH] [-T TOP]
+usage: memleak.py [-h] [-p PID] [-t] [-a] [-o OLDER] [-c COMMAND]
+ [-s SAMPLE_RATE] [-T TOP] [-z MIN_SIZE] [-Z MAX_SIZE]
+ [-O OBJ]
[interval] [count]
Trace outstanding memory allocations that weren't freed.
Supports both user-mode allocations made with malloc/free and kernel-mode
allocations made with kmalloc/kfree.
+positional arguments:
interval interval in seconds to print outstanding allocations
count number of times to print the report before exiting
@@ -175,13 +177,12 @@
execute and trace the specified command
-s SAMPLE_RATE, --sample-rate SAMPLE_RATE
sample every N-th allocation to decrease the overhead
- -d STACK_DEPTH, --stack_depth STACK_DEPTH
- maximum stack depth to capture
-T TOP, --top TOP display only this many top allocating stacks (by size)
-z MIN_SIZE, --min-size MIN_SIZE
capture only allocations larger than this size
-Z MAX_SIZE, --max-size MAX_SIZE
capture only allocations smaller than this size
+ -O OBJ, --obj OBJ attach to malloc & free in the specified object
EXAMPLES: