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