[tip: perf/core] perf machine: Set ksymbol dso as loaded on arrival

[tip-bot2 for Jiri Olsa]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     7eddf7e74e54aea3b24410b3fb8911927836632f
Gitweb:        https://git.kernel.org/tip/7eddf7e74e54aea3b24410b3fb8911927836632f
Author:        Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate:    Thu, 12 Mar 2020 20:56:09 +01:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Thu, 16 Apr 2020 12:19:06 -03:00

perf machine: Set ksymbol dso as loaded on arrival

There's no special load action for ksymbol data on map__load/dso__load
action, where the kernel is getting loaded. It only gets confused with
kernel kallsyms/vmlinux load for bpf object, which fails and could mess
up with the map.

Disabling any further load of the map for ksymbol related dso/map.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Song Liu <songliubraving@xxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Andrii Nakryiko <andriin@xxxxxx>
Cc: BjÃÂrn TÃÂpel <bjorn.topel@xxxxxxxxx>
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <hawk@xxxxxxxxxx>
Cc: John Fastabend <john.fastabend@xxxxxxxxx>
Cc: Martin KaFai Lau <kafai@xxxxxx>
Cc: Yonghong Song <yhs@xxxxxx>
Link: https://lore.kernel.org/bpf/20200312195610.346362-15-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/machine.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 97142e9..06aa4e4 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -759,6 +759,7 @@ static int machine__process_ksymbol_register(struct machine *machine,
 		map->start = event->ksymbol.addr;
 		map->end = map->start + event->ksymbol.len;
 		maps__insert(&machine->kmaps, map);
+		dso__set_loaded(dso);
 	}
 
 	sym = symbol__new(map->map_ip(map, map->start),