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17 May 2024, 11:00:25 UTC
Revision 46fe18b16c4656969347fc0a3d83a034e47d9119 authored by Jens Axboe on 04 March 2021, 19:39:36 UTC, committed by Jens Axboe on 05 March 2021, 15:43:01 UTC 
io_uring: move to using create_io_thread()
 
This allows us to do task creation and setup without needing to use
completions to try and synchronize with the starting thread. Get rid of
the old io_wq_fork_thread() wrapper, and the 'wq' and 'worker' startup
completion events - we can now do setup before the task is running.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent cc440e8
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Tip revision: 46fe18b16c4656969347fc0a3d83a034e47d9119 authored by Jens Axboe on 04 March 2021, 19:39:36 UTC
io_uring: move to using create_io_thread()
Tip revision: 46fe18b
nodemask.c 
// SPDX-License-Identifier: GPL-2.0
#include <linux/nodemask.h>
#include <linux/module.h>
#include <linux/random.h>

int __next_node_in(int node, const nodemask_t *srcp)
{
	int ret = __next_node(node, srcp);

	if (ret == MAX_NUMNODES)
		ret = __first_node(srcp);
	return ret;
}
EXPORT_SYMBOL(__next_node_in);

#ifdef CONFIG_NUMA
/*
 * Return the bit number of a random bit set in the nodemask.
 * (returns NUMA_NO_NODE if nodemask is empty)
 */
int node_random(const nodemask_t *maskp)
{
	int w, bit = NUMA_NO_NODE;

	w = nodes_weight(*maskp);
	if (w)
		bit = bitmap_ord_to_pos(maskp->bits,
			get_random_int() % w, MAX_NUMNODES);
	return bit;
}
#endif
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