kernel_samsung_a53x/drivers/net/dsa/mv88e6xxx/trace.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright 2022 NXP
 */

#define CREATE_TRACE_POINTS
#include "trace.h"
net: dsa: mv88e6xxx: replace ATU violation prints with trace points [ Upstream commit 8646384d80f3d3b4a66b3284dbbd8232d1b8799e ] In applications where the switch ports must perform 802.1X based authentication and are therefore locked, ATU violation interrupts are quite to be expected as part of normal operation. The problem is that they currently spam the kernel log, even if rate limited. Create a series of trace points, all derived from the same event class, which log these violations to the kernel's trace buffer, which is both much faster and much easier to ignore than printing to a serial console. New usage model: $ trace-cmd list \| grep mv88e6xxx mv88e6xxx mv88e6xxx:mv88e6xxx_atu_full_violation mv88e6xxx:mv88e6xxx_atu_miss_violation mv88e6xxx:mv88e6xxx_atu_member_violation $ trace-cmd record -e mv88e6xxx sleep 10 Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Saeed Mahameed <saeed@kernel.org> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 528876d867a2 ("net: dsa: mv88e6xxx: Fix out-of-bound access") Signed-off-by: Sasha Levin <sashal@kernel.org> 2022-12-09 19:28:16 +02:00			`// SPDX-License-Identifier: GPL-2.0-or-later`
			`/* Copyright 2022 NXP`
			`*/`

			`#define CREATE_TRACE_POINTS`
			`#include "trace.h"`