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cxgbe(4): sysctls to display the local and intr CPUs for the adapter.

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The driver assumes the list can change (even though it does't right now)
and queries it every time the sysctl runs.

sysctl dev.<nexus>.<inst>.local_cpus
sysctl dev.<nexus>.<inst>.intr_cpus

sysctl dev.t6nex.0.local_cpus
sysctl dev.t6nex.0.intr_cpus

Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2018-06-15 18:04:44 +00:00
parent f756301851
commit 6ddad9de86
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=335223
1 changed files with 42 additions and 0 deletions
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42
sys/dev/cxgbe/t4_main.c
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@ -588,6 +588,7 @@ static int sysctl_tx_rate(SYSCTL_HANDLER_ARGS);
static int sysctl_ulprx_la(SYSCTL_HANDLER_ARGS);
static int sysctl_wcwr_stats(SYSCTL_HANDLER_ARGS);
static int sysctl_tc_params(SYSCTL_HANDLER_ARGS);
static int sysctl_cpus(SYSCTL_HANDLER_ARGS);
#ifdef TCP_OFFLOAD
static int sysctl_tls_rx_ports(SYSCTL_HANDLER_ARGS);
static int sysctl_tp_tick(SYSCTL_HANDLER_ARGS);
@ -5547,6 +5548,14 @@ t4_sysctls(struct adapter *sc)
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "core_vdd", CTLFLAG_RD,
&sc->params.core_vdd, 0, "core Vdd (in mV)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "local_cpus",
CTLTYPE_STRING | CTLFLAG_RD, sc, LOCAL_CPUS,
sysctl_cpus, "A", "local CPUs");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "intr_cpus",
CTLTYPE_STRING | CTLFLAG_RD, sc, INTR_CPUS,
sysctl_cpus, "A", "preferred CPUs for interrupts");
/*
* dev.t4nex.X.misc. Marked CTLFLAG_SKIP to avoid information overload.
*/
@ -8612,6 +8621,39 @@ sysctl_tc_params(SYSCTL_HANDLER_ARGS)
return (rc);
}
static int
sysctl_cpus(SYSCTL_HANDLER_ARGS)
{
struct adapter *sc = arg1;
enum cpu_sets op = arg2;
cpuset_t cpuset;
struct sbuf *sb;
int i, rc;
MPASS(op == LOCAL_CPUS || op == INTR_CPUS);
CPU_ZERO(&cpuset);
rc = bus_get_cpus(sc->dev, op, sizeof(cpuset), &cpuset);
if (rc != 0)
return (rc);
rc = sysctl_wire_old_buffer(req, 0);
if (rc != 0)
return (rc);
sb = sbuf_new_for_sysctl(NULL, NULL, 4096, req);
if (sb == NULL)
return (ENOMEM);
CPU_FOREACH(i)
sbuf_printf(sb, "%d ", i);
rc = sbuf_finish(sb);
sbuf_delete(sb);
return (rc);
}
#ifdef TCP_OFFLOAD
static int
sysctl_tls_rx_ports(SYSCTL_HANDLER_ARGS)