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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
scsi_ioctl.h 
#ifndef _SCSI_IOCTL_H
#define _SCSI_IOCTL_H 

#define SCSI_IOCTL_SEND_COMMAND 1
#define SCSI_IOCTL_TEST_UNIT_READY 2
#define SCSI_IOCTL_BENCHMARK_COMMAND 3
#define SCSI_IOCTL_SYNC 4			/* Request synchronous parameters */
#define SCSI_IOCTL_START_UNIT 5
#define SCSI_IOCTL_STOP_UNIT 6
/* The door lock/unlock constants are compatible with Sun constants for
   the cdrom */
#define SCSI_IOCTL_DOORLOCK 0x5380		/* lock the eject mechanism */
#define SCSI_IOCTL_DOORUNLOCK 0x5381		/* unlock the mechanism	  */

#define	SCSI_REMOVAL_PREVENT	1
#define	SCSI_REMOVAL_ALLOW	0

#ifdef __KERNEL__

struct scsi_device;

/*
 * Structures used for scsi_ioctl et al.
 */

typedef struct scsi_ioctl_command {
	unsigned int inlen;
	unsigned int outlen;
	unsigned char data[0];
} Scsi_Ioctl_Command;

typedef struct scsi_idlun {
	__u32 dev_id;
	__u32 host_unique_id;
} Scsi_Idlun;

/* Fibre Channel WWN, port_id struct */
typedef struct scsi_fctargaddress {
	__u32 host_port_id;
	unsigned char host_wwn[8]; // include NULL term.
} Scsi_FCTargAddress;

int scsi_ioctl_block_when_processing_errors(struct scsi_device *sdev,
		int cmd, bool ndelay);
extern int scsi_ioctl(struct scsi_device *, int, void __user *);

#endif /* __KERNEL__ */
#endif /* _SCSI_IOCTL_H */
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