Re: [PATCH v1 2/4] perf trace: Migrate BPF augmentation to use a skeleton
From: Jiri Olsa
Date: Fri Aug 11 2023 - 12:10:02 EST
On Thu, Aug 10, 2023 at 11:48:51AM -0700, Ian Rogers wrote:
> Previously a BPF event of augmented_raw_syscalls.c could be used to
> enable augmentation of syscalls by perf trace. As BPF events are no
> longer supported, switch to using a BPF skeleton which when attached
> explicitly opens the sysenter and sysexit tracepoints.
>
> The dump map is removed as debugging wasn't supported by the
> augmentation and bpf_printk can be used when necessary.
>
> Remove tools/perf/examples/bpf/augmented_raw_syscalls.c so that the
> rename/migration to a BPF skeleton captures that this was the source.
there's still some:
[jolsa@krava perf]$ grep -r augmented_raw_syscalls.c
builtin-trace.c: * (now tools/perf/examples/bpf/augmented_raw_syscalls.c, so that it
builtin-trace.c: * tools/perf/examples/bpf/augmented_raw_syscalls.c,
Documentation/perf-trace.txt: living in tools/perf/examples/bpf/augmented_raw_syscalls.c. For now this
jirka
>
> Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
> ---
> tools/perf/Makefile.perf | 1 +
> tools/perf/builtin-trace.c | 180 +++++++++++-------
> .../bpf_skel/augmented_raw_syscalls.bpf.c} | 27 +--
> 3 files changed, 131 insertions(+), 77 deletions(-)
> rename tools/perf/{examples/bpf/augmented_raw_syscalls.c => util/bpf_skel/augmented_raw_syscalls.bpf.c} (96%)
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 6ec5079fd697..0e1597712b95 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -1042,6 +1042,7 @@ SKELETONS += $(SKEL_OUT)/bperf_cgroup.skel.h $(SKEL_OUT)/func_latency.skel.h
> SKELETONS += $(SKEL_OUT)/off_cpu.skel.h $(SKEL_OUT)/lock_contention.skel.h
> SKELETONS += $(SKEL_OUT)/kwork_trace.skel.h $(SKEL_OUT)/sample_filter.skel.h
> SKELETONS += $(SKEL_OUT)/bench_uprobe.skel.h
> +SKELETONS += $(SKEL_OUT)/augmented_raw_syscalls.skel.h
>
> $(SKEL_TMP_OUT) $(LIBAPI_OUTPUT) $(LIBBPF_OUTPUT) $(LIBPERF_OUTPUT) $(LIBSUBCMD_OUTPUT) $(LIBSYMBOL_OUTPUT):
> $(Q)$(MKDIR) -p $@
> diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> index 59862467e781..8625fca42cd8 100644
> --- a/tools/perf/builtin-trace.c
> +++ b/tools/perf/builtin-trace.c
> @@ -19,6 +19,9 @@
> #ifdef HAVE_LIBBPF_SUPPORT
> #include <bpf/bpf.h>
> #include <bpf/libbpf.h>
> +#ifdef HAVE_BPF_SKEL
> +#include "bpf_skel/augmented_raw_syscalls.skel.h"
> +#endif
> #endif
> #include "util/bpf_map.h"
> #include "util/rlimit.h"
> @@ -127,25 +130,19 @@ struct trace {
> struct syscalltbl *sctbl;
> struct {
> struct syscall *table;
> - struct { // per syscall BPF_MAP_TYPE_PROG_ARRAY
> - struct bpf_map *sys_enter,
> - *sys_exit;
> - } prog_array;
> struct {
> struct evsel *sys_enter,
> - *sys_exit,
> - *augmented;
> + *sys_exit,
> + *bpf_output;
> } events;
> - struct bpf_program *unaugmented_prog;
> } syscalls;
> - struct {
> - struct bpf_map *map;
> - } dump;
> +#ifdef HAVE_BPF_SKEL
> + struct augmented_raw_syscalls_bpf *skel;
> +#endif
> struct record_opts opts;
> struct evlist *evlist;
> struct machine *host;
> struct thread *current;
> - struct bpf_object *bpf_obj;
> struct cgroup *cgroup;
> u64 base_time;
> FILE *output;
> @@ -415,6 +412,7 @@ static int evsel__init_syscall_tp(struct evsel *evsel)
> if (evsel__init_tp_uint_field(evsel, &sc->id, "__syscall_nr") &&
> evsel__init_tp_uint_field(evsel, &sc->id, "nr"))
> return -ENOENT;
> +
> return 0;
> }
>
> @@ -2845,7 +2843,7 @@ static int trace__event_handler(struct trace *trace, struct evsel *evsel,
> if (thread)
> trace__fprintf_comm_tid(trace, thread, trace->output);
>
> - if (evsel == trace->syscalls.events.augmented) {
> + if (evsel == trace->syscalls.events.bpf_output) {
> int id = perf_evsel__sc_tp_uint(evsel, id, sample);
> struct syscall *sc = trace__syscall_info(trace, evsel, id);
>
> @@ -3278,24 +3276,16 @@ static int trace__set_ev_qualifier_tp_filter(struct trace *trace)
> goto out;
> }
>
> -#ifdef HAVE_LIBBPF_SUPPORT
> -static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace, const char *name)
> -{
> - if (trace->bpf_obj == NULL)
> - return NULL;
> -
> - return bpf_object__find_map_by_name(trace->bpf_obj, name);
> -}
> -
> +#ifdef HAVE_BPF_SKEL
> static struct bpf_program *trace__find_bpf_program_by_title(struct trace *trace, const char *name)
> {
> struct bpf_program *pos, *prog = NULL;
> const char *sec_name;
>
> - if (trace->bpf_obj == NULL)
> + if (trace->skel->obj == NULL)
> return NULL;
>
> - bpf_object__for_each_program(pos, trace->bpf_obj) {
> + bpf_object__for_each_program(pos, trace->skel->obj) {
> sec_name = bpf_program__section_name(pos);
> if (sec_name && !strcmp(sec_name, name)) {
> prog = pos;
> @@ -3313,12 +3303,14 @@ static struct bpf_program *trace__find_syscall_bpf_prog(struct trace *trace, str
>
> if (prog_name == NULL) {
> char default_prog_name[256];
> - scnprintf(default_prog_name, sizeof(default_prog_name), "!syscalls:sys_%s_%s", type, sc->name);
> + scnprintf(default_prog_name, sizeof(default_prog_name), "tp/syscalls/sys_%s_%s",
> + type, sc->name);
> prog = trace__find_bpf_program_by_title(trace, default_prog_name);
> if (prog != NULL)
> goto out_found;
> if (sc->fmt && sc->fmt->alias) {
> - scnprintf(default_prog_name, sizeof(default_prog_name), "!syscalls:sys_%s_%s", type, sc->fmt->alias);
> + scnprintf(default_prog_name, sizeof(default_prog_name),
> + "tp/syscalls/sys_%s_%s", type, sc->fmt->alias);
> prog = trace__find_bpf_program_by_title(trace, default_prog_name);
> if (prog != NULL)
> goto out_found;
> @@ -3336,7 +3328,7 @@ static struct bpf_program *trace__find_syscall_bpf_prog(struct trace *trace, str
> pr_debug("Couldn't find BPF prog \"%s\" to associate with syscalls:sys_%s_%s, not augmenting it\n",
> prog_name, type, sc->name);
> out_unaugmented:
> - return trace->syscalls.unaugmented_prog;
> + return trace->skel->progs.syscall_unaugmented;
> }
>
> static void trace__init_syscall_bpf_progs(struct trace *trace, int id)
> @@ -3353,13 +3345,21 @@ static void trace__init_syscall_bpf_progs(struct trace *trace, int id)
> static int trace__bpf_prog_sys_enter_fd(struct trace *trace, int id)
> {
> struct syscall *sc = trace__syscall_info(trace, NULL, id);
> - return sc ? bpf_program__fd(sc->bpf_prog.sys_enter) : bpf_program__fd(trace->syscalls.unaugmented_prog);
> +
> + if (sc)
> + return bpf_program__fd(sc->bpf_prog.sys_enter);
> +
> + return bpf_program__fd(trace->skel->progs.syscall_unaugmented);
> }
>
> static int trace__bpf_prog_sys_exit_fd(struct trace *trace, int id)
> {
> struct syscall *sc = trace__syscall_info(trace, NULL, id);
> - return sc ? bpf_program__fd(sc->bpf_prog.sys_exit) : bpf_program__fd(trace->syscalls.unaugmented_prog);
> +
> + if (sc)
> + return bpf_program__fd(sc->bpf_prog.sys_exit);
> +
> + return bpf_program__fd(trace->skel->progs.syscall_unaugmented);
> }
>
> static struct bpf_program *trace__find_usable_bpf_prog_entry(struct trace *trace, struct syscall *sc)
> @@ -3384,7 +3384,7 @@ static struct bpf_program *trace__find_usable_bpf_prog_entry(struct trace *trace
> bool is_candidate = false;
>
> if (pair == NULL || pair == sc ||
> - pair->bpf_prog.sys_enter == trace->syscalls.unaugmented_prog)
> + pair->bpf_prog.sys_enter == trace->skel->progs.syscall_unaugmented)
> continue;
>
> for (field = sc->args, candidate_field = pair->args;
> @@ -3437,7 +3437,7 @@ static struct bpf_program *trace__find_usable_bpf_prog_entry(struct trace *trace
> */
> if (pair_prog == NULL) {
> pair_prog = trace__find_syscall_bpf_prog(trace, pair, pair->fmt ? pair->fmt->bpf_prog_name.sys_enter : NULL, "enter");
> - if (pair_prog == trace->syscalls.unaugmented_prog)
> + if (pair_prog == trace->skel->progs.syscall_unaugmented)
> goto next_candidate;
> }
>
> @@ -3452,8 +3452,8 @@ static struct bpf_program *trace__find_usable_bpf_prog_entry(struct trace *trace
>
> static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace)
> {
> - int map_enter_fd = bpf_map__fd(trace->syscalls.prog_array.sys_enter),
> - map_exit_fd = bpf_map__fd(trace->syscalls.prog_array.sys_exit);
> + int map_enter_fd = bpf_map__fd(trace->skel->maps.syscalls_sys_enter);
> + int map_exit_fd = bpf_map__fd(trace->skel->maps.syscalls_sys_exit);
> int err = 0, key;
>
> for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
> @@ -3515,7 +3515,7 @@ static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace)
> * For now we're just reusing the sys_enter prog, and if it
> * already has an augmenter, we don't need to find one.
> */
> - if (sc->bpf_prog.sys_enter != trace->syscalls.unaugmented_prog)
> + if (sc->bpf_prog.sys_enter != trace->skel->progs.syscall_unaugmented)
> continue;
>
> /*
> @@ -3538,22 +3538,9 @@ static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace)
> break;
> }
>
> -
> return err;
> }
> -
> -#else // HAVE_LIBBPF_SUPPORT
> -static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace __maybe_unused,
> - const char *name __maybe_unused)
> -{
> - return NULL;
> -}
> -
> -static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace __maybe_unused)
> -{
> - return 0;
> -}
> -#endif // HAVE_LIBBPF_SUPPORT
> +#endif // HAVE_BPF_SKEL
>
> static int trace__set_ev_qualifier_filter(struct trace *trace)
> {
> @@ -3917,13 +3904,31 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
> err = evlist__open(evlist);
> if (err < 0)
> goto out_error_open;
> +#ifdef HAVE_BPF_SKEL
> + {
> + struct perf_cpu cpu;
>
> + /*
> + * Set up the __augmented_syscalls__ BPF map to hold for each
> + * CPU the bpf-output event's file descriptor.
> + */
> + perf_cpu_map__for_each_cpu(cpu, i, trace->syscalls.events.bpf_output->core.cpus) {
> + bpf_map__update_elem(trace->skel->maps.__augmented_syscalls__,
> + &cpu.cpu, sizeof(int),
> + xyarray__entry(trace->syscalls.events.bpf_output->core.fd,
> + cpu.cpu, 0),
> + sizeof(__u32), BPF_ANY);
> + }
> + }
> +#endif
> err = trace__set_filter_pids(trace);
> if (err < 0)
> goto out_error_mem;
>
> - if (trace->syscalls.prog_array.sys_enter)
> +#ifdef HAVE_BPF_SKEL
> + if (trace->skel->progs.sys_enter)
> trace__init_syscalls_bpf_prog_array_maps(trace);
> +#endif
>
> if (trace->ev_qualifier_ids.nr > 0) {
> err = trace__set_ev_qualifier_filter(trace);
> @@ -3956,9 +3961,6 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
> if (err < 0)
> goto out_error_apply_filters;
>
> - if (trace->dump.map)
> - bpf_map__fprintf(trace->dump.map, trace->output);
> -
> err = evlist__mmap(evlist, trace->opts.mmap_pages);
> if (err < 0)
> goto out_error_mmap;
> @@ -4655,6 +4657,18 @@ static void trace__exit(struct trace *trace)
> zfree(&trace->perfconfig_events);
> }
>
> +#ifdef HAVE_BPF_SKEL
> +static int bpf__setup_bpf_output(struct evlist *evlist)
> +{
> + int err = parse_event(evlist, "bpf-output/no-inherit=1,name=__augmented_syscalls__/");
> +
> + if (err)
> + pr_debug("ERROR: failed to create the \"__augmented_syscalls__\" bpf-output event\n");
> +
> + return err;
> +}
> +#endif
> +
> int cmd_trace(int argc, const char **argv)
> {
> const char *trace_usage[] = {
> @@ -4686,7 +4700,6 @@ int cmd_trace(int argc, const char **argv)
> .max_stack = UINT_MAX,
> .max_events = ULONG_MAX,
> };
> - const char *map_dump_str = NULL;
> const char *output_name = NULL;
> const struct option trace_options[] = {
> OPT_CALLBACK('e', "event", &trace, "event",
> @@ -4720,9 +4733,6 @@ int cmd_trace(int argc, const char **argv)
> OPT_CALLBACK(0, "duration", &trace, "float",
> "show only events with duration > N.M ms",
> trace__set_duration),
> -#ifdef HAVE_LIBBPF_SUPPORT
> - OPT_STRING(0, "map-dump", &map_dump_str, "BPF map", "BPF map to periodically dump"),
> -#endif
> OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
> OPT_INCR('v', "verbose", &verbose, "be more verbose"),
> OPT_BOOLEAN('T', "time", &trace.full_time,
> @@ -4849,16 +4859,55 @@ int cmd_trace(int argc, const char **argv)
> "cgroup monitoring only available in system-wide mode");
> }
>
> - err = -1;
> +#ifdef HAVE_BPF_SKEL
> + trace.skel = augmented_raw_syscalls_bpf__open();
> + if (!trace.skel) {
> + pr_debug("Failed to open augmented syscalls BPF skeleton");
> + } else {
> + /*
> + * Disable attaching the BPF programs except for sys_enter and
> + * sys_exit that tail call into this as necessary.
> + */
> + bpf_program__set_autoattach(trace.skel->progs.syscall_unaugmented,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_connect,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_sendto,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_open,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_openat,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_rename,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_renameat,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_perf_event_open,
> + /*autoattach=*/false);
> + bpf_program__set_autoattach(trace.skel->progs.sys_enter_clock_nanosleep,
> + /*autoattach=*/false);
> +
> + err = augmented_raw_syscalls_bpf__load(trace.skel);
>
> - if (map_dump_str) {
> - trace.dump.map = trace__find_bpf_map_by_name(&trace, map_dump_str);
> - if (trace.dump.map == NULL) {
> - pr_err("ERROR: BPF map \"%s\" not found\n", map_dump_str);
> - goto out;
> + if (err < 0) {
> + pr_debug("Failed to load augmented syscalls BPF skeleton\n");
> + } else {
> + augmented_raw_syscalls_bpf__attach(trace.skel);
> + trace__add_syscall_newtp(&trace);
> }
> }
>
> + err = bpf__setup_bpf_output(trace.evlist);
> + if (err) {
> + libbpf_strerror(err, bf, sizeof(bf));
> + pr_err("ERROR: Setup BPF output event failed: %s\n", bf);
> + goto out;
> + }
> + trace.syscalls.events.bpf_output = evlist__last(trace.evlist);
> + assert(!strcmp(evsel__name(trace.syscalls.events.bpf_output), "__augmented_syscalls__"));
> +#endif
> + err = -1;
> +
> if (trace.trace_pgfaults) {
> trace.opts.sample_address = true;
> trace.opts.sample_time = true;
> @@ -4909,7 +4958,7 @@ int cmd_trace(int argc, const char **argv)
> * buffers that are being copied from kernel to userspace, think 'read'
> * syscall.
> */
> - if (trace.syscalls.events.augmented) {
> + if (trace.syscalls.events.bpf_output) {
> evlist__for_each_entry(trace.evlist, evsel) {
> bool raw_syscalls_sys_exit = strcmp(evsel__name(evsel), "raw_syscalls:sys_exit") == 0;
>
> @@ -4918,9 +4967,9 @@ int cmd_trace(int argc, const char **argv)
> goto init_augmented_syscall_tp;
> }
>
> - if (trace.syscalls.events.augmented->priv == NULL &&
> + if (trace.syscalls.events.bpf_output->priv == NULL &&
> strstr(evsel__name(evsel), "syscalls:sys_enter")) {
> - struct evsel *augmented = trace.syscalls.events.augmented;
> + struct evsel *augmented = trace.syscalls.events.bpf_output;
> if (evsel__init_augmented_syscall_tp(augmented, evsel) ||
> evsel__init_augmented_syscall_tp_args(augmented))
> goto out;
> @@ -5025,5 +5074,8 @@ int cmd_trace(int argc, const char **argv)
> fclose(trace.output);
> out:
> trace__exit(&trace);
> +#ifdef HAVE_BPF_SKEL
> + augmented_raw_syscalls_bpf__destroy(trace.skel);
> +#endif
> return err;
> }
> diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
> similarity index 96%
> rename from tools/perf/examples/bpf/augmented_raw_syscalls.c
> rename to tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
> index 9a03189d33d3..70478b9460ee 100644
> --- a/tools/perf/examples/bpf/augmented_raw_syscalls.c
> +++ b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
> @@ -18,6 +18,8 @@
> #include <bpf/bpf_helpers.h>
> #include <linux/limits.h>
>
> +#define MAX_CPUS 4096
> +
> // FIXME: These should come from system headers
> typedef char bool;
> typedef int pid_t;
> @@ -34,7 +36,7 @@ struct __augmented_syscalls__ {
> __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
> __type(key, int);
> __type(value, __u32);
> - __uint(max_entries, __NR_CPUS__);
> + __uint(max_entries, MAX_CPUS);
> } __augmented_syscalls__ SEC(".maps");
>
> /*
> @@ -170,7 +172,7 @@ unsigned int augmented_arg__read_str(struct augmented_arg *augmented_arg, const
> return augmented_len;
> }
>
> -SEC("!raw_syscalls:unaugmented")
> +SEC("tp/raw_syscalls/sys_enter")
> int syscall_unaugmented(struct syscall_enter_args *args)
> {
> return 1;
> @@ -182,7 +184,7 @@ int syscall_unaugmented(struct syscall_enter_args *args)
> * on from there, reading the first syscall arg as a string, i.e. open's
> * filename.
> */
> -SEC("!syscalls:sys_enter_connect")
> +SEC("tp/syscalls/sys_enter_connect")
> int sys_enter_connect(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -201,7 +203,7 @@ int sys_enter_connect(struct syscall_enter_args *args)
> return augmented__output(args, augmented_args, len + socklen);
> }
>
> -SEC("!syscalls:sys_enter_sendto")
> +SEC("tp/syscalls/sys_enter_sendto")
> int sys_enter_sendto(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -220,7 +222,7 @@ int sys_enter_sendto(struct syscall_enter_args *args)
> return augmented__output(args, augmented_args, len + socklen);
> }
>
> -SEC("!syscalls:sys_enter_open")
> +SEC("tp/syscalls/sys_enter_open")
> int sys_enter_open(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -235,7 +237,7 @@ int sys_enter_open(struct syscall_enter_args *args)
> return augmented__output(args, augmented_args, len);
> }
>
> -SEC("!syscalls:sys_enter_openat")
> +SEC("tp/syscalls/sys_enter_openat")
> int sys_enter_openat(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -250,7 +252,7 @@ int sys_enter_openat(struct syscall_enter_args *args)
> return augmented__output(args, augmented_args, len);
> }
>
> -SEC("!syscalls:sys_enter_rename")
> +SEC("tp/syscalls/sys_enter_rename")
> int sys_enter_rename(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -267,7 +269,7 @@ int sys_enter_rename(struct syscall_enter_args *args)
> return augmented__output(args, augmented_args, len);
> }
>
> -SEC("!syscalls:sys_enter_renameat")
> +SEC("tp/syscalls/sys_enter_renameat")
> int sys_enter_renameat(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -295,7 +297,7 @@ struct perf_event_attr_size {
> __u32 size;
> };
>
> -SEC("!syscalls:sys_enter_perf_event_open")
> +SEC("tp/syscalls/sys_enter_perf_event_open")
> int sys_enter_perf_event_open(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -327,7 +329,7 @@ int sys_enter_perf_event_open(struct syscall_enter_args *args)
> return 1; /* Failure: don't filter */
> }
>
> -SEC("!syscalls:sys_enter_clock_nanosleep")
> +SEC("tp/syscalls/sys_enter_clock_nanosleep")
> int sys_enter_clock_nanosleep(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args = augmented_args_payload();
> @@ -358,7 +360,7 @@ static bool pid_filter__has(struct pids_filtered *pids, pid_t pid)
> return bpf_map_lookup_elem(pids, &pid) != NULL;
> }
>
> -SEC("raw_syscalls:sys_enter")
> +SEC("tp/raw_syscalls/sys_enter")
> int sys_enter(struct syscall_enter_args *args)
> {
> struct augmented_args_payload *augmented_args;
> @@ -371,7 +373,6 @@ int sys_enter(struct syscall_enter_args *args)
> * We'll add to this as we add augmented syscalls right after that
> * initial, non-augmented raw_syscalls:sys_enter payload.
> */
> - unsigned int len = sizeof(augmented_args->args);
>
> if (pid_filter__has(&pids_filtered, getpid()))
> return 0;
> @@ -393,7 +394,7 @@ int sys_enter(struct syscall_enter_args *args)
> return 0;
> }
>
> -SEC("raw_syscalls:sys_exit")
> +SEC("tp/raw_syscalls/sys_exit")
> int sys_exit(struct syscall_exit_args *args)
> {
> struct syscall_exit_args exit_args;
> --
> 2.41.0.640.ga95def55d0-goog
>