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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Oracle and/or its affiliates. */
#include <test_progs.h>
#include "trace_printk.lskel.h"
#define SEARCHMSG "testing,testing"
static void trace_pipe_cb(const char *str, void *data)
{
if (strstr(str, SEARCHMSG) != NULL)
(*(int *)data)++;
}
void serial_test_trace_printk(void)
{
struct trace_printk_lskel__bss *bss;
struct trace_printk_lskel *skel;
int err = 0, found = 0;
skel = trace_printk_lskel__open();
if (!ASSERT_OK_PTR(skel, "trace_printk__open"))
return;
ASSERT_EQ(skel->rodata->fmt[0], 'T', "skel->rodata->fmt[0]");
skel->rodata->fmt[0] = 't';
err = trace_printk_lskel__load(skel);
if (!ASSERT_OK(err, "trace_printk__load"))
goto cleanup;
bss = skel->bss;
err = trace_printk_lskel__attach(skel);
if (!ASSERT_OK(err, "trace_printk__attach"))
goto cleanup;
/* wait for tracepoint to trigger */
usleep(1);
trace_printk_lskel__detach(skel);
if (!ASSERT_GT(bss->trace_printk_ran, 0, "bss->trace_printk_ran"))
goto cleanup;
if (!ASSERT_GT(bss->trace_printk_ret, 0, "bss->trace_printk_ret"))
goto cleanup;
/* verify our search string is in the trace buffer */
ASSERT_OK(read_trace_pipe_iter(trace_pipe_cb, &found, 1000),
"read_trace_pipe_iter");
if (!ASSERT_EQ(found, bss->trace_printk_ran, "found"))
goto cleanup;
cleanup:
trace_printk_lskel__destroy(skel);
}
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