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- // SPDX-License-Identifier: GPL-2.0-only
- #include <linux/module.h>
- #include <linux/kthread.h>
- #include <linux/irq_work.h>
- /* Must not be static to force gcc to consider these non constant */
- char *trace_printk_test_global_str =
- "This is a dynamic string that will use trace_puts\n";
- char *trace_printk_test_global_str_irq =
- "(irq) This is a dynamic string that will use trace_puts\n";
- char *trace_printk_test_global_str_fmt =
- "%sThis is a %s that will use trace_printk\n";
- static struct irq_work irqwork;
- static void trace_printk_irq_work(struct irq_work *work)
- {
- trace_printk("(irq) This is a static string that will use trace_bputs\n");
- trace_printk(trace_printk_test_global_str_irq);
- trace_printk("(irq) This is a %s that will use trace_bprintk()\n",
- "static string");
- trace_printk(trace_printk_test_global_str_fmt,
- "(irq) ", "dynamic string");
- }
- static int __init trace_printk_init(void)
- {
- init_irq_work(&irqwork, trace_printk_irq_work);
- trace_printk("This is a static string that will use trace_bputs\n");
- trace_printk(trace_printk_test_global_str);
- /* Kick off printing in irq context */
- irq_work_queue(&irqwork);
- irq_work_sync(&irqwork);
- trace_printk("This is a %s that will use trace_bprintk()\n",
- "static string");
- trace_printk(trace_printk_test_global_str_fmt, "", "dynamic string");
- return 0;
- }
- static void __exit trace_printk_exit(void)
- {
- }
- module_init(trace_printk_init);
- module_exit(trace_printk_exit);
- MODULE_AUTHOR("Steven Rostedt");
- MODULE_DESCRIPTION("trace-printk");
- MODULE_LICENSE("GPL");
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