#include #include #include /* 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); 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"); ='sub right'>Tobias Klauser
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 19:03:21 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 20:22:18 +0100
commitaaaec6fc755447a1d056765b11b24d8ff2b81366 (patch)
treea7f4167960ee1df86739905b6ccdeb95465bfe5f /tools/perf/util/bpf-loader.c
parent08d85f3ea99f1eeafc4e8507936190e86a16ee8c (diff)
x86/irq: Make irq activate operations symmetric
The recent commit which prevents double activation of interrupts unearthed interesting code in x86. The code (ab)uses irq_domain_activate_irq() to reconfigure an already activated interrupt. That trips over the prevention code now. Fix it by deactivating the interrupt before activating the new configuration. Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once" Reported-and-tested-by: Mike Galbraith <efault@gmx.de> Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Diffstat (limited to 'tools/perf/util/bpf-loader.c')