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printk/percpu: Define printk_func when printk is not defined

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To avoid include hell, the per_cpu variable printk_func was declared
in percpu.h. But it is only defined if printk is defined.

As users of printk may also use the printk_func variable, it needs to
be defined even if CONFIG_PRINTK is not.

Also add a printk.h include in percpu.h just to be safe.

Link: http://lkml.kernel.org/r/[email protected]

Reported-by: Stephen Rothwell <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-11-21 09:16:58 -05:00 • committed by Steven Rostedt
commit 04b74b27c2
3 changed files with 6 additions and 2 deletions
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3
kernel/printk/printk.c
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@ -1896,6 +1896,9 @@ static size_t msg_print_text(const struct printk_log *msg, enum log_flags prev,
bool syslog, char *buf, size_t size) { return 0; }
static size_t cont_print_text(char *text, size_t size) { return 0; }
/* Still needs to be defined for users */
DEFINE_PER_CPU(printk_func_t, printk_func);
#endif /* CONFIG_PRINTK */
#ifdef CONFIG_EARLY_PRINTK