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Commit 8d61dd7d authored by Zhigang Lu's avatar Zhigang Lu Committed by Chris Metcalf
Browse files

tile/perf: Support perf_events on tilegx and tilepro 



Add perf support for tile architecture.

Signed-off-by: default avatarZhigang Lu <zlu@tilera.com>
Signed-off-by: default avatarChris Metcalf <cmetcalf@tilera.com>
parent ba678231

arch/tile/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -3,6 +3,8 @@ 


config TILE

	def_bool y

	select HAVE_PERF_EVENTS

	select USE_PMC if PERF_EVENTS

	select HAVE_DMA_ATTRS

	select HAVE_DMA_API_DEBUG

	select HAVE_KVM if !TILEGX

arch/tile/include/asm/perf_event.h

0 → 100644
+22 −0
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/*

 * Copyright 2014 Tilera Corporation. All Rights Reserved.

 *

 *   This program is free software; you can redistribute it and/or

 *   modify it under the terms of the GNU General Public License

 *   as published by the Free Software Foundation, version 2.

 *

 *   This program is distributed in the hope that it will be useful, but

 *   WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or

 *   NON INFRINGEMENT.  See the GNU General Public License for

 *   more details.

 */



#ifndef _ASM_TILE_PERF_EVENT_H

#define _ASM_TILE_PERF_EVENT_H



#include <linux/percpu.h>

DECLARE_PER_CPU(u64, perf_irqs);



unsigned long handle_syscall_link_address(void);

#endif /* _ASM_TILE_PERF_EVENT_H */

arch/tile/kernel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ obj-$(CONFIG_PCI) += pci_gx.o 
else

obj-$(CONFIG_PCI)		+= pci.o

endif

obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o

obj-$(CONFIG_USE_PMC)		+= pmc.o

obj-$(CONFIG_TILE_USB)		+= usb.o

obj-$(CONFIG_TILE_HVGLUE_TRACE)	+= hvglue_trace.o

arch/tile/kernel/irq.c

+18 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <hv/drv_pcie_rc_intf.h>

#include <arch/spr_def.h>

#include <asm/traps.h>

#include <linux/perf_event.h>



/* Bit-flag stored in irq_desc->chip_data to indicate HW-cleared irqs. */

#define IS_HW_CLEARED 1
@@ -260,6 +261,23 @@ void ack_bad_irq(unsigned int irq) 
	pr_err("unexpected IRQ trap at vector %02x\n", irq);

}



/*

 * /proc/interrupts printing:

 */

int arch_show_interrupts(struct seq_file *p, int prec)

{

#ifdef CONFIG_PERF_EVENTS

	int i;



	seq_printf(p, "%*s: ", prec, "PMI");



	for_each_online_cpu(i)

		seq_printf(p, "%10llu ", per_cpu(perf_irqs, i));

	seq_puts(p, "  perf_events\n");

#endif

	return 0;

}



/*

 * Generic, controller-independent functions:

 */

arch/tile/kernel/perf_event.c

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