GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-20 13:41:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

bpf: support bpf_get_stackid() and bpf_perf_event_output() in tracepoint programs

Browse source 
needs two wrapper functions to fetch 'struct pt_regs *' to convert
tracepoint bpf context into kprobe bpf context to reuse existing
helper functions

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexei Starovoitov 2016-04-06 18:43:27 -07:00 • committed by David S. Miller
parent 9fd82b610b
commit 9940d67c93
3 changed files with 43 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
kernel/bpf/stackmap.c
View file

@ -116,7 +116,7 @@ free_smap:
return ERR_PTR(err);
}
static u64 bpf_get_stackid(u64 r1, u64 r2, u64 flags, u64 r4, u64 r5)
u64 bpf_get_stackid(u64 r1, u64 r2, u64 flags, u64 r4, u64 r5)
{
struct pt_regs *regs = (struct pt_regs *) (long) r1;
struct bpf_map *map = (struct bpf_map *) (long) r2;