#include <linux/ceph/ceph_debug.h>

#include <linux/err.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/vmalloc.h>

#include <linux/ceph/messenger.h>
#include <linux/ceph/msgpool.h>

static void *msgpool_alloc(gfp_t gfp_mask, void *arg)
{
	struct ceph_msgpool *pool = arg;
	struct ceph_msg *msg;

	msg = ceph_msg_new(pool->type, pool->front_len, gfp_mask, true);
	if (!msg) {
		dout("msgpool_alloc %s failed\n", pool->name);
	} else {
		dout("msgpool_alloc %s %p\n", pool->name, msg);
		msg->pool = pool;
	}
	return msg;
}

static void msgpool_free(void *element, void *arg)
{
	struct ceph_msgpool *pool = arg;
	struct ceph_msg *msg = element;

	dout("msgpool_release %s %p\n", pool->name, msg);
	msg->pool = NULL;
	ceph_msg_put(msg);
}

int ceph_msgpool_init(struct ceph_msgpool *pool, int type,
		      int front_len, int size, bool blocking, const char *name)
{
	dout("msgpool %s init\n", name);
	pool->type = type;
	pool->front_len = front_len;
	pool->pool = mempool_create(size, msgpool_alloc, msgpool_free, pool);
	if (!pool->pool)
		return -ENOMEM;
	pool->name = name;
	return 0;
}

void ceph_msgpool_destroy(struct ceph_msgpool *pool)
{
	dout("msgpool %s destroy\n", pool->name);
	mempool_destroy(pool->pool);
}

struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool,
				  int front_len)
{
	struct ceph_msg *msg;

	if (front_len > pool->front_len) {
		dout("msgpool_get %s need front %d, pool size is %d\n",
		       pool->name, front_len, pool->front_len);
		WARN_ON(1);

		/* try to alloc a fresh message */
		return ceph_msg_new(pool->type, front_len, GFP_NOFS, false);
	}

	msg = mempool_alloc(pool->pool, GFP_NOFS);
	dout("msgpool_get %s %p\n", pool->name, msg);
	return msg;
}

void ceph_msgpool_put(struct ceph_msgpool *pool, struct ceph_msg *msg)
{
	dout("msgpool_put %s %p\n", pool->name, msg);

	/* reset msg front_len; user may have changed it */
	msg->front.iov_len = pool->front_len;
	msg->hdr.front_len = cpu_to_le32(pool->front_len);

	kref_init(&msg->kref);  /* retake single ref */
	mempool_free(msg, pool->pool);
}
ols/perf/bench/sched-messaging.c?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/bench/sched-messaging.c?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/perf/bench/sched-messaging.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='22a677661f5624539d394f681276171f92d714df'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/bench?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>bench</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/bench/sched-messaging.c?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df'>sched-messaging.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/bench/sched-messaging.c?h=nds-private-remove&amp;id=22a677661f5624539d394f681276171f92d714df&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>