Removing unneeded use of bpf_probe_read in funcslower

linux-kern · Jun 5, 2018 · f99769d · f99769d
1 parent 5c24456
commit f99769d
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/tools/funcslower.py b/tools/funcslower.py
@@ -174,10 +174,7 @@
  data.kernel_stack_id = stacks.get_stackid(ctx, 0 | BPF_F_REUSE_STACKID);
 
  if (data.kernel_stack_id >= 0) {
- // populate extras to fix the kernel stack
- struct pt_regs regs = {};
- bpf_probe_read(&regs, sizeof(regs), (void *)ctx);
- u64 ip = PT_REGS_IP(&regs);
+ u64 ip = PT_REGS_IP(ctx);
 
  // if ip isn't sane, leave key ips as zero for later checking
 #ifdef CONFIG_RANDOMIZE_MEMORY