[src/trunk]: src/sys/arch/x86/pci vmx(4) uses interrupt distribution for each...

[knakahara <knakahara%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/783dacf9598f
branches:  trunk
changeset: 458568:783dacf9598f
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Thu Aug 01 09:37:34 2019 +0000

description:
vmx(4) uses interrupt distribution for each queue like ixg(4).

diffstat:

 sys/arch/x86/pci/if_vmx.c |  16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)

diffs (51 lines):

diff -r 6cb8c7e9c815 -r 783dacf9598f sys/arch/x86/pci/if_vmx.c
--- a/sys/arch/x86/pci/if_vmx.c Thu Aug 01 08:51:52 2019 +0000
+++ b/sys/arch/x86/pci/if_vmx.c Thu Aug 01 09:37:34 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_vmx.c,v 1.45 2019/07/30 11:16:15 knakahara Exp $    */
+/*     $NetBSD: if_vmx.c,v 1.46 2019/08/01 09:37:34 knakahara Exp $    */
 /*     $OpenBSD: if_vmx.c,v 1.16 2014/01/22 06:04:17 brad Exp $        */
 
 /*
@@ -19,7 +19,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_vmx.c,v 1.45 2019/07/30 11:16:15 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_vmx.c,v 1.46 2019/08/01 09:37:34 knakahara Exp $");
 
 #include <sys/param.h>
 #include <sys/cpu.h>
@@ -31,6 +31,7 @@
 #include <sys/sockio.h>
 #include <sys/pcq.h>
 #include <sys/workqueue.h>
+#include <sys/interrupt.h>
 
 #include <net/bpf.h>
 #include <net/if.h>
@@ -876,6 +877,7 @@
        pci_intr_handle_t *intr;
        void **ihs;
        int intr_idx, i, use_queues, error;
+       kcpuset_t *affinity;
        const char *intrstr;
        char intrbuf[PCI_INTRSTR_LEN];
        char xnamebuf[32];
@@ -903,6 +905,16 @@
                }
                aprint_normal_dev(sc->vmx_dev, "txrx interrupting at %s\n", intrstr);
 
+               kcpuset_create(&affinity, true);
+               kcpuset_set(affinity, intr_idx % ncpu);
+               error = interrupt_distribute(*ihs, affinity, NULL);
+               if (error) {
+                       aprint_normal_dev(sc->vmx_dev,
+                           "%s cannot be changed affinity, use default CPU\n",
+                           intrstr);
+               }
+               kcpuset_destroy(affinity);
+
                vmxq->vxq_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE,
                    vmxnet3_handle_queue, vmxq);
                if (vmxq->vxq_si == NULL) {