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mlx5: Keep polling to reclaim pages while any returned 

Change mlx5_reclaim_startup_pages() to keep polling while any pages
are returned.  If none are returned, keep polling for five more seconds
before exiting with an error message.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Eli Cohen 2013-09-11 16:35:28 +03:00 committed by Roland Dreier
parent a0c84c326f
commit dabed0e631
1 changed files with 14 additions and 2 deletions
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16
drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
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@ -90,6 +90,10 @@ struct mlx5_manage_pages_outbox {
__be64 pas[0];
};
enum {
MAX_RECLAIM_TIME_MSECS = 5000,
};
static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u16 func_id)
{
struct rb_root *root = &dev->priv.page_root;
@ -279,6 +283,9 @@ static int reclaim_pages(struct mlx5_core_dev *dev, u32 func_id, int npages,
int err;
int i;
if (nclaimed)
*nclaimed = 0;
memset(&in, 0, sizeof(in));
outlen = sizeof(*out) + npages * sizeof(out->pas[0]);
out = mlx5_vzalloc(outlen);
@ -388,20 +395,25 @@ static int optimal_reclaimed_pages(void)
int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
{
unsigned long end = jiffies + msecs_to_jiffies(5000);
unsigned long end = jiffies + msecs_to_jiffies(MAX_RECLAIM_TIME_MSECS);
struct fw_page *fwp;
struct rb_node *p;
int nclaimed = 0;
int err;
do {
p = rb_first(&dev->priv.page_root);
if (p) {
fwp = rb_entry(p, struct fw_page, rb_node);
err = reclaim_pages(dev, fwp->func_id, optimal_reclaimed_pages(), NULL);
err = reclaim_pages(dev, fwp->func_id,
optimal_reclaimed_pages(),
&nclaimed);
if (err) {
mlx5_core_warn(dev, "failed reclaiming pages (%d)\n", err);
return err;
}
if (nclaimed)
end = jiffies + msecs_to_jiffies(MAX_RECLAIM_TIME_MSECS);
}
if (time_after(jiffies, end)) {
mlx5_core_warn(dev, "FW did not return all pages. giving up...\n");