File perf-trace-add-pointer-to-bpf-object-containing-_augmented_syscalls__.patch of Package perf.23962
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 15 Jul 2019 16:58:23 -0300
Subject: perf trace: Add pointer to BPF object containing
__augmented_syscalls__
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Git-commit: c8c805707ed4c5d976210821da3242af8610a533
Patch-mainline: v5.4-rc1
References: jsc#SLE-13661
So that we can use it when looking for other components of that object
file, such as other programs to add to the BPF_MAP_TYPE_PROG_ARRAY and
use with bpf_tail_call().
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-1ibmz7ouv6llqxajy7m8igtd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Tony Jones <tonyj@suse.de>
---
tools/perf/builtin-trace.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 4f0bbffee05f..6aa080845a84 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -96,6 +96,7 @@ struct trace {
struct perf_evlist *evlist;
struct machine *host;
struct thread *current;
+ struct bpf_object *bpf_obj;
struct cgroup *cgroup;
u64 base_time;
FILE *output;
@@ -3895,6 +3896,20 @@ int cmd_trace(int argc, const char **argv)
if (evsel) {
trace.syscalls.events.augmented = evsel;
+
+ evsel = perf_evlist__find_tracepoint_by_name(trace.evlist, "raw_syscalls:sys_enter");
+ if (evsel == NULL) {
+ pr_err("ERROR: raw_syscalls:sys_enter not found in the augmented BPF object\n");
+ goto out;
+ }
+
+ if (evsel->bpf_obj == NULL) {
+ pr_err("ERROR: raw_syscalls:sys_enter not associated to a BPF object\n");
+ goto out;
+ }
+
+ trace.bpf_obj = evsel->bpf_obj;
+
trace__set_bpf_map_filtered_pids(&trace);
trace__set_bpf_map_syscalls(&trace);
}
