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Remove the power-saving delay loop from the usleep function.

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Now we halt inactive CPU cores, this should no longer be needed.
This commit is contained in:
Martin Whitaker 2022-02-19 13:04:26 +00:00
parent 0e61b1605e
commit d09c5ed7b4
1 changed files with 1 additions and 2 deletions
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3
lib/unistd.c
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@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2020 Martin Whitaker.
// Copyright (C) 2020-2022 Martin Whitaker.
#include <stdint.h>
@ -20,7 +20,6 @@ void usleep(unsigned int usec)
uint64_t t0 = get_tsc();
do {
__builtin_ia32_pause();
for (volatile int i = 0; i < 100; i++) { } // this reduces power consumption
} while ((get_tsc() - t0) < cycles);
} else {
// This will be highly inaccurate, but should give at least the requested delay.