Hi all! On 15/10/18 14:17, Lev Olshvang wrote: [...]
I am debugging kernel module and use SystemTap to monitor requested and freed memory.
I see that SystemTap statistics shows that kfree() is called 5 times more than kalloc. It happens not only on my module, it happens on VirtualBox vboxsf driver as well.
See hits count below kmalloc hits: 21561 kfree hits: 102175
"kfree(NULL)" is a legal NO-OP (and basically all other similar functions are expected to gracefully accept a NULL pointer). MfG, Bernd -- "I dislike type abstraction if it has no real reason. And saving on typing is not a good reason - if your typing speed is the main issue when you're coding, you're doing something seriously wrong." - Linus Torvalds