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From: Kevin Laatz <kevin.laatz@intel.com>
To: dev@dpdk.org
Cc: bruce.richardson@intel.com, fengchengwen@huawei.com, conor.walsh@intel.com,
Kevin Laatz <kevin.laatz@intel.com>
Date: Thu, 14 Oct 2021 09:53:08 +0000
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Subject: [dpdk-dev] [PATCH v4 5/8] examples/ioat: add signal-triggered
device dumps
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Enable dumping device info via the signal handler. With this change, when a
SIGUSR1 is issued, the application will print a dump of all devices being
used by the application.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
---
examples/ioat/ioatfwd.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
index 8c4920b798..8bb69c1c14 100644
--- a/examples/ioat/ioatfwd.c
+++ b/examples/ioat/ioatfwd.c
@@ -1007,6 +1007,20 @@ port_init(uint16_t portid, struct rte_mempool *mbuf_pool, uint16_t nb_queues)
cfg.ports[cfg.nb_ports++].nb_queues = nb_queues;
}
+/* Get a device dump for each device being used by the application */
+static void
+rawdev_dump(void)
+{
+ uint32_t i, j;
+
+ if (copy_mode != COPY_MODE_IOAT_NUM)
+ return;
+
+ for (i = 0; i < cfg.nb_ports; i++)
+ for (j = 0; j < cfg.ports[i].nb_queues; j++)
+ rte_rawdev_dump(cfg.ports[i].ioat_ids[j], stdout);
+}
+
static void
signal_handler(int signum)
{
@@ -1014,6 +1028,8 @@ signal_handler(int signum)
printf("\n\nSignal %d received, preparing to exit...\n",
signum);
force_quit = true;
+ } else if (signum == SIGUSR1) {
+ rawdev_dump();
}
}
@@ -1037,6 +1053,7 @@ main(int argc, char **argv)
force_quit = false;
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
+ signal(SIGUSR1, signal_handler);
nb_ports = rte_eth_dev_count_avail();
if (nb_ports == 0)
--
2.30.2