| 1 | |
| 2 | |
| 3 | * lib/bust_spinlocks.c
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| 4 | *
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| 5 | * Provides a minimal bust_spinlocks for architectures which don't have one of their own.
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| 6 | *
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| 7 | * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
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| 8 | * and panic() information from reaching the user.
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| 9 |
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| 10 |
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| 11 | #include <linux/kernel.h>
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| 12 | #include <linux/printk.h>
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| 13 | #include <linux/spinlock.h>
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| 14 | #include <linux/tty.h>
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| 15 | #include <linux/wait.h>
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| 16 | #include <linux/vt_kern.h>
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| 17 | #include <linux/console.h>
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| 18 |
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| 19 |
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| 20 | void __attribute__((weak)) bust_spinlocks(int yes)
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| 21 | {
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| 22 | if (yes) {
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| 23 | ++oops_in_progress;
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| 24 | } else {
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| 25 | #ifdef CONFIG_VT
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| 26 | unblank_screen();
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| 27 | #endif
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| 28 | console_unblank();
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| 29 | if (--oops_in_progress == 0)
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| 30 | wake_up_klogd();
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| 31 | }
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| 32 | }
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