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Revision 71e7bc2bab77e64882c031c2af943c3256c1adb0 authored by David Carrillo-Cisneros on 17 August 2016, 20:55:04 UTC, committed by Ingo Molnar on 18 August 2016, 08:35:52 UTC 
perf/core: Check return value of the perf_event_read() IPI
 
The call to smp_call_function_single in perf_event_read() may fail if
an invalid or not online CPU index is passed. Warn user if such bug is
present and return error.

Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1471467307-61171-2-git-send-email-davidcc@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 99f5bc9
Raw File
kyro.h 
/*
 *  linux/drivers/video/kyro/kryo.h
 *
 *  Copyright (C) 2002 STMicroelectronics
 *  Copyright (C) 2004 Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#ifndef _KYRO_H
#define _KYRO_H

struct kyrofb_info {
	void __iomem *regbase;

	u32 palette[16];
	u32 HTot;	/* Hor Total Time    */
	u32 HFP;	/* Hor Front Porch   */
	u32 HST;	/* Hor Sync Time     */
	u32 HBP;	/* Hor Back Porch    */
	s32 HSP;		/* Hor Sync Polarity */
	u32 VTot;	/* Ver Total Time    */
	u32 VFP;	/* Ver Front Porch   */
	u32 VST;	/* Ver Sync Time     */
	u32 VBP;	/* Ver Back Porch    */
	s32 VSP;		/* Ver Sync Polarity */
	u32 XRES;	/* X Resolution      */
	u32 YRES;	/* Y Resolution      */
	u32 VFREQ;	/* Ver Frequency     */
	u32 PIXCLK;	/* Pixel Clock       */
	u32 HCLK;	/* Hor Clock         */

	/* Useful to hold depth here for Linux */
	u8 PIXDEPTH;

	int wc_cookie;
};

extern int kyro_dev_init(void);
extern void kyro_dev_reset(void);

extern unsigned char *kyro_dev_physical_fb_ptr(void);
extern unsigned char *kyro_dev_virtual_fb_ptr(void);
extern void *kyro_dev_physical_regs_ptr(void);
extern void *kyro_dev_virtual_regs_ptr(void);
extern unsigned int kyro_dev_fb_size(void);
extern unsigned int kyro_dev_regs_size(void);

extern u32 kyro_dev_overlay_offset(void);

/*
 * benedict.gaster@superh.com
 * Added the follow IOCTLS for the creation of overlay services...
 */
#define KYRO_IOC_MAGIC 'k'

#define KYRO_IOCTL_OVERLAY_CREATE       _IO(KYRO_IOC_MAGIC, 0)
#define KYRO_IOCTL_OVERLAY_VIEWPORT_SET _IO(KYRO_IOC_MAGIC, 1)
#define KYRO_IOCTL_SET_VIDEO_MODE       _IO(KYRO_IOC_MAGIC, 2)
#define KYRO_IOCTL_UVSTRIDE             _IO(KYRO_IOC_MAGIC, 3)
#define KYRO_IOCTL_OVERLAY_OFFSET       _IO(KYRO_IOC_MAGIC, 4)
#define KYRO_IOCTL_STRIDE               _IO(KYRO_IOC_MAGIC, 5)

/*
 * The follow 3 structures are used to pass data from user space into the kernel
 * for the creation of overlay surfaces and setting the video mode.
 */
typedef struct _OVERLAY_CREATE {
	u32 ulWidth;
	u32 ulHeight;
	int bLinear;
} overlay_create;

typedef struct _OVERLAY_VIEWPORT_SET {
	u32 xOrgin;
	u32 yOrgin;
	u32 xSize;
	u32 ySize;
} overlay_viewport_set;

typedef struct _SET_VIDEO_MODE {
	u32 ulWidth;
	u32 ulHeight;
	u32 ulScan;
	u8 displayDepth;
	int bLinear;
} set_video_mode;

#endif /* _KYRO_H */
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