svn commit: r336159 - head/sys/dev/cxgbe
Navdeep Parhar
np at FreeBSD.org
Tue Jul 10 03:03:11 UTC 2018
Author: np
Date: Tue Jul 10 03:03:10 2018
New Revision: 336159
URL: https://svnweb.freebsd.org/changeset/base/336159
Log:
cxgbe(4): Add a sysctl to report the chip's microprocessor's load
averages. This works with debug or custom firmwares only.
sysctl dev.<nexus>.<instance>.loadavg
sysctl dev.t6nex.0.loadavg
MFC after: 1 month
Sponsored by: Chelsio Communications
Modified:
head/sys/dev/cxgbe/t4_main.c
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Tue Jul 10 02:46:31 2018 (r336158)
+++ head/sys/dev/cxgbe/t4_main.c Tue Jul 10 03:03:10 2018 (r336159)
@@ -559,6 +559,7 @@ static int sysctl_fec(SYSCTL_HANDLER_ARGS);
static int sysctl_autoneg(SYSCTL_HANDLER_ARGS);
static int sysctl_handle_t4_reg64(SYSCTL_HANDLER_ARGS);
static int sysctl_temperature(SYSCTL_HANDLER_ARGS);
+static int sysctl_loadavg(SYSCTL_HANDLER_ARGS);
static int sysctl_cctrl(SYSCTL_HANDLER_ARGS);
static int sysctl_cim_ibq_obq(SYSCTL_HANDLER_ARGS);
static int sysctl_cim_la(SYSCTL_HANDLER_ARGS);
@@ -5542,6 +5543,10 @@ t4_sysctls(struct adapter *sc)
CTLFLAG_RD, sc, 0, sysctl_temperature, "I",
"chip temperature (in Celsius)");
+ SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "loadavg", CTLTYPE_STRING |
+ CTLFLAG_RD, sc, 0, sysctl_loadavg, "A",
+ "microprocessor load averages (debug firmwares only)");
+
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "core_vdd", CTLFLAG_RD,
&sc->params.core_vdd, 0, "core Vdd (in mV)");
@@ -6606,6 +6611,45 @@ sysctl_temperature(SYSCTL_HANDLER_ARGS)
t = val == 0 ? -1 : val;
rc = sysctl_handle_int(oidp, &t, 0, req);
+ return (rc);
+}
+
+static int
+sysctl_loadavg(SYSCTL_HANDLER_ARGS)
+{
+ struct adapter *sc = arg1;
+ struct sbuf *sb;
+ int rc;
+ uint32_t param, val;
+
+ rc = begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4lavg");
+ if (rc)
+ return (rc);
+ param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
+ V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_LOAD);
+ rc = -t4_query_params(sc, sc->mbox, sc->pf, 0, 1, ¶m, &val);
+ end_synchronized_op(sc, 0);
+ if (rc)
+ 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);
+
+ if (val == 0xffffffff) {
+ /* Only debug and custom firmwares report load averages. */
+ sbuf_printf(sb, "not available");
+ } else {
+ sbuf_printf(sb, "%d %d %d", val & 0xff, (val >> 8) & 0xff,
+ (val >> 16) & 0xff);
+ }
+ rc = sbuf_finish(sb);
+ sbuf_delete(sb);
+
return (rc);
}
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