1SET_BIT(9) Basic C Library Functions SET_BIT(9)
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6 set_bit - Atomically set a bit in memory
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9 void set_bit(unsigned int nr, volatile unsigned long * addr);
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12 nr
13 the bit to set
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15 addr
16 the address to start counting from
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19 This function is atomic and may not be reordered. See __set_bit if you
20 do not require the atomic guarantees.
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23 there are no guarantees that this function will not be reordered on non
24 x86 architectures, so if you are writing portable code, make sure not
25 to rely on its reordering guarantees.
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27 Note that nr may be almost arbitrarily large; this function is not
28 restricted to acting on a single-word quantity.
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31Kernel Hackers Manual 2.6. June 2019 SET_BIT(9)