tree 2a814316785aae3350f363e0f510472e30760f1c
parent 7c9e69428da39ed761c9d903c4850368fa4ef7bf
author Jesper Dangaard Brouer <brouer@redhat.com> 1573903368 +0100
committer David S. Miller <davem@davemloft.net> 1574125398 -0800

page_pool: extend tracepoint to also include the page PFN

The MM tracepoint for page free (called kmem:mm_page_free) doesn't provide
the page pointer directly, instead it provides the PFN (Page Frame Number).
This is annoying when writing a page_pool leak detector in BPF.

This patch change page_pool tracepoints to also provide the PFN.
The page pointer is still provided to allow other kinds of
troubleshooting from BPF.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>