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printk-formats.txt: Add examples for %pF and %pS usage

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Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Helge Deller 2017-08-23 21:52:05 +02:00
parent d81f734462
commit fd46cd55fb
1 changed files with 10 additions and 0 deletions
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Documentation/printk-formats.txt
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@ -75,6 +75,16 @@ used when printing stack backtraces. The specifier takes into
consideration the effect of compiler optimisations which may occur
when tail-call``s are used and marked with the noreturn GCC attribute.
Examples::
printk("Going to call: %pF\n", gettimeofday);
printk("Going to call: %pF\n", p->func);
printk("%s: called from %pS\n", __func__, (void *)_RET_IP_);
printk("%s: called from %pS\n", __func__,
(void *)__builtin_return_address(0));
printk("Faulted at %pS\n", (void *)regs->ip);
printk(" %s%pB\n", (reliable ? "" : "? "), (void *)*stack);
Kernel Pointers
===============