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Revision d3a61f745e0d089a2484740283a434deb6dd4eb5 authored by Alexander Potapenko on 26 February 2021, 01:19:51 UTC, committed by Linus Torvalds on 26 February 2021, 17:41:02 UTC 
kasan: use error_report_end tracepoint
 
Make it possible to trace KASAN error reporting.  A good usecase is
watching for trace events from the userspace to detect and process memory
corruption reports from the kernel.

Link: https://lkml.kernel.org/r/20210121131915.1331302-4-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Suggested-by: Marco Elver <elver@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Raw File
board-artpec6.c 
// SPDX-License-Identifier: GPL-2.0-only
/*
 * ARTPEC-6 device support.
 */

#include <linux/amba/bus.h>
#include <linux/clocksource.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk-provider.h>
#include <linux/regmap.h>
#include <linux/smp.h>
#include <asm/smp_scu.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/psci.h>
#include <linux/arm-smccc.h>


#define ARTPEC6_DMACFG_REGNUM 0x10
#define ARTPEC6_DMACFG_UARTS_BURST 0xff

#define SECURE_OP_L2C_WRITEREG 0xb4000001

static void __init artpec6_init_machine(void)
{
	struct regmap *regmap;

	regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon");

	if (!IS_ERR(regmap)) {
		/* Use PL011 DMA Burst Request signal instead of DMA
		 *  Single Request
		 */
		regmap_write(regmap, ARTPEC6_DMACFG_REGNUM,
			     ARTPEC6_DMACFG_UARTS_BURST);
	};
}

static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg)
{
	struct arm_smccc_res res;

	arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0,
		      0, 0, 0, 0, &res);

	WARN_ON(res.a0);
}

static const char * const artpec6_dt_match[] = {
	"axis,artpec6",
	NULL
};

DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform")
	.l2c_aux_val	= 0x0C000000,
	.l2c_aux_mask	= 0xF3FFFFFF,
	.l2c_write_sec  = artpec6_l2c310_write_sec,
	.init_machine	= artpec6_init_machine,
	.dt_compat	= artpec6_dt_match,
MACHINE_END
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