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authorJiri Olsa2024-01-19 12:04:58 +0100
committerAlexei Starovoitov2024-01-23 16:05:27 -0800
commitd5c16492c66fbfca85f36e42363d32212df5927b (patch)
tree9b3398711339bf2660ed056fee3d49eff741d153 /kernel/bpf
parentbbc094b3052647c188d6f155f5c09cb9492ce106 (diff)
bpf: Add cookie to perf_event bpf_link_info records
At the moment we don't store cookie for perf_event probes, while we do that for the rest of the probes. Adding cookie fields to struct bpf_link_info perf event probe records: perf_event.uprobe perf_event.kprobe perf_event.tracepoint perf_event.perf_event And the code to store that in bpf_link_info struct. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <song@kernel.org> Acked-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/r/20240119110505.400573-2-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf')
-rw-r--r--kernel/bpf/syscall.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index a1f18681721c..13193aaafb64 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3501,6 +3501,7 @@ static int bpf_perf_link_fill_kprobe(const struct perf_event *event,
if (!kallsyms_show_value(current_cred()))
addr = 0;
info->perf_event.kprobe.addr = addr;
+ info->perf_event.kprobe.cookie = event->bpf_cookie;
return 0;
}
#endif
@@ -3526,6 +3527,7 @@ static int bpf_perf_link_fill_uprobe(const struct perf_event *event,
else
info->perf_event.type = BPF_PERF_EVENT_UPROBE;
info->perf_event.uprobe.offset = offset;
+ info->perf_event.uprobe.cookie = event->bpf_cookie;
return 0;
}
#endif
@@ -3553,6 +3555,7 @@ static int bpf_perf_link_fill_tracepoint(const struct perf_event *event,
uname = u64_to_user_ptr(info->perf_event.tracepoint.tp_name);
ulen = info->perf_event.tracepoint.name_len;
info->perf_event.type = BPF_PERF_EVENT_TRACEPOINT;
+ info->perf_event.tracepoint.cookie = event->bpf_cookie;
return bpf_perf_link_fill_common(event, uname, ulen, NULL, NULL, NULL, NULL);
}
@@ -3561,6 +3564,7 @@ static int bpf_perf_link_fill_perf_event(const struct perf_event *event,
{
info->perf_event.event.type = event->attr.type;
info->perf_event.event.config = event->attr.config;
+ info->perf_event.event.cookie = event->bpf_cookie;
info->perf_event.type = BPF_PERF_EVENT_EVENT;
return 0;
}