On 10.07.17 10:53:45, Shanker Donthineni wrote: > The NUMA node information is visible to ITS driver but not being used > other than handling hardware errata. ITS/GICR hardware accesses to the > local NUMA node is usually quicker than the remote NUMA node. How slow > the remote NUMA accesses are depends on the implementation details. > > This patch allocates memory for ITS management tables and command > queue from the corresponding NUMA node using the appropriate NUMA > aware functions. This change improves the performance of the ITS > tables read latency on systems where it has more than one ITS block, > and with the slower inter node accesses. > > Signed-off-by: Shanker Donthineni <shank...@codeaurora.org> > Tested-by: Ganapatrao Kulkarni <ganapatrao.kulka...@cavium.com> > --- > drivers/irqchip/irq-gic-v3-its.c | 36 ++++++++++++++++++++---------------- > 1 file changed, 20 insertions(+), 16 deletions(-)
> @@ -1773,7 +1777,7 @@ static int __init its_probe_one(struct resource *res, > out_free_tables: > its_free_tables(its); > out_free_cmd: > - free_pages((unsigned long)its->cmd_base, get_order(ITS_CMD_QUEUE_SZ)); > + __free_pages(virt_to_page(its->cmd_base), get_order(ITS_CMD_QUEUE_SZ)); This change is not required as free_pages() can be used here directly. -Robert > out_free_its: > kfree(its); > out_unmap:
