1 files changed, 0 insertions, 171 deletions
diff --git a/tools/bpf/runqslower/runqslower.c b/tools/bpf/runqslower/runqslower.c
deleted file mode 100644
index 83c5993a139a..000000000000
--- a/tools/bpf/runqslower/runqslower.c
+++ /dev/null
@@ -1,171 +0,0 @@
-// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-// Copyright (c) 2019 Facebook
-#include <argp.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <bpf/libbpf.h>
-#include <bpf/bpf.h>
-#include "runqslower.h"
-#include "runqslower.skel.h"
-
-struct env {
-	pid_t pid;
-	__u64 min_us;
-	bool verbose;
-} env = {
-	.min_us = 10000,
-};
-
-const char *argp_program_version = "runqslower 0.1";
-const char *argp_program_bug_address = "<bpf@vger.kernel.org>";
-const char argp_program_doc[] =
-"runqslower    Trace long process scheduling delays.\n"
-"              For Linux, uses eBPF, BPF CO-RE, libbpf, BTF.\n"
-"\n"
-"This script traces high scheduling delays between tasks being\n"
-"ready to run and them running on CPU after that.\n"
-"\n"
-"USAGE: runqslower [-p PID] [min_us]\n"
-"\n"
-"EXAMPLES:\n"
-"    runqslower         # trace run queue latency higher than 10000 us (default)\n"
-"    runqslower 1000    # trace run queue latency higher than 1000 us\n"
-"    runqslower -p 123  # trace pid 123 only\n";
-
-static const struct argp_option opts[] = {
-	{ "pid", 'p', "PID", 0, "Process PID to trace"},
-	{ "verbose", 'v', NULL, 0, "Verbose debug output" },
-	{},
-};
-
-static error_t parse_arg(int key, char *arg, struct argp_state *state)
-{
-	static int pos_args;
-	int pid;
-	long long min_us;
-
-	switch (key) {
-	case 'v':
-		env.verbose = true;
-		break;
-	case 'p':
-		errno = 0;
-		pid = strtol(arg, NULL, 10);
-		if (errno || pid <= 0) {
-			fprintf(stderr, "Invalid PID: %s\n", arg);
-			argp_usage(state);
-		}
-		env.pid = pid;
-		break;
-	case ARGP_KEY_ARG:
-		if (pos_args++) {
-			fprintf(stderr,
-				"Unrecognized positional argument: %s\n", arg);
-			argp_usage(state);
-		}
-		errno = 0;
-		min_us = strtoll(arg, NULL, 10);
-		if (errno || min_us <= 0) {
-			fprintf(stderr, "Invalid delay (in us): %s\n", arg);
-			argp_usage(state);
-		}
-		env.min_us = min_us;
-		break;
-	default:
-		return ARGP_ERR_UNKNOWN;
-	}
-	return 0;
-}
-
-int libbpf_print_fn(enum libbpf_print_level level,
-		    const char *format, va_list args)
-{
-	if (level == LIBBPF_DEBUG && !env.verbose)
-		return 0;
-	return vfprintf(stderr, format, args);
-}
-
-void handle_event(void *ctx, int cpu, void *data, __u32 data_sz)
-{
-	const struct runq_event *e = data;
-	struct tm *tm;
-	char ts[32];
-	time_t t;
-
-	time(&t);
-	tm = localtime(&t);
-	strftime(ts, sizeof(ts), "%H:%M:%S", tm);
-	printf("%-8s %-16s %-6d %14llu\n", ts, e->task, e->pid, e->delta_us);
-}
-
-void handle_lost_events(void *ctx, int cpu, __u64 lost_cnt)
-{
-	printf("Lost %llu events on CPU #%d!\n", lost_cnt, cpu);
-}
-
-int main(int argc, char **argv)
-{
-	static const struct argp argp = {
-		.options = opts,
-		.parser = parse_arg,
-		.doc = argp_program_doc,
-	};
-	struct perf_buffer *pb = NULL;
-	struct runqslower_bpf *obj;
-	int err;
-
-	err = argp_parse(&argp, argc, argv, 0, NULL, NULL);
-	if (err)
-		return err;
-
-	libbpf_set_print(libbpf_print_fn);
-
-	/* Use libbpf 1.0 API mode */
-	libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
-
-	obj = runqslower_bpf__open();
-	if (!obj) {
-		fprintf(stderr, "failed to open and/or load BPF object\n");
-		return 1;
-	}
-
-	/* initialize global data (filtering options) */
-	obj->rodata->targ_pid = env.pid;
-	obj->rodata->min_us = env.min_us;
-
-	err = runqslower_bpf__load(obj);
-	if (err) {
-		fprintf(stderr, "failed to load BPF object: %d\n", err);
-		goto cleanup;
-	}
-
-	err = runqslower_bpf__attach(obj);
-	if (err) {
-		fprintf(stderr, "failed to attach BPF programs\n");
-		goto cleanup;
-	}
-
-	printf("Tracing run queue latency higher than %llu us\n", env.min_us);
-	printf("%-8s %-16s %-6s %14s\n", "TIME", "COMM", "PID", "LAT(us)");
-
-	pb = perf_buffer__new(bpf_map__fd(obj->maps.events), 64,
-			      handle_event, handle_lost_events, NULL, NULL);
-	err = libbpf_get_error(pb);
-	if (err) {
-		pb = NULL;
-		fprintf(stderr, "failed to open perf buffer: %d\n", err);
-		goto cleanup;
-	}
-
-	while ((err = perf_buffer__poll(pb, 100)) >= 0)
-		;
-	printf("Error polling perf buffer: %d\n", err);
-
-cleanup:
-	perf_buffer__free(pb);
-	runqslower_bpf__destroy(obj);
-
-	return err != 0;
-}