commit 2c31dd7ae7b3fa48506a965184eff0021b17b03d
author Hengqi Chen <chenhengqi@outlook.com> Sat Jan 15 11:40:52 2022 +0800
committer yonghong-song <ys114321@gmail.com> Sat Jan 15 11:38:58 2022 -0800
tree a2da67baa7d7e80815fc6040a56a008efcdd7df2
parent 8f40d6f57a8d94e7aee74ce358572d34d31b4ed4

tools/oomkill: Use task_struct->tgid as PID

The OOM target PID should be task_struct->tgid.

Signed-off-by: Hengqi Chen <chenhengqi@outlook.com>

tools/oomkill.py

diff --git a/tools/oomkill.py b/tools/oomkill.py
index 3d6e927..1bf441c 100755
--- a/tools/oomkill.py
+++ b/tools/oomkill.py
@@ -37,12 +37,12 @@
 
 void kprobe__oom_kill_process(struct pt_regs *ctx, struct oom_control *oc, const char *message)
 {
-    unsigned long totalpages;
     struct task_struct *p = oc->chosen;
     struct data_t data = {};
     u32 pid = bpf_get_current_pid_tgid() >> 32;
+
     data.fpid = pid;
-    data.tpid = p->pid;
+    data.tpid = p->tgid;
     data.pages = oc->totalpages;
     bpf_get_current_comm(&data.fcomm, sizeof(data.fcomm));
     bpf_probe_read_kernel(&data.tcomm, sizeof(data.tcomm), p->comm);