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6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPIS390_CMB_H
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#define _UAPIS390_CMB_H
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#include <linux/types.h>
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/**
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* struct cmbdata - channel measurement block data for user space
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* @size: size of the stored data
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* @elapsed_time: time since last sampling
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* @ssch_rsch_count: number of ssch and rsch
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* @sample_count: number of samples
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* @device_connect_time: time of device connect
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* @function_pending_time: time of function pending
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* @device_disconnect_time: time of device disconnect
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* @control_unit_queuing_time: time of control unit queuing
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* @device_active_only_time: time of device active only
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* @device_busy_time: time of device busy (ext. format)
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* @initial_command_response_time: initial command response time (ext. format)
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*
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* All values are stored as 64 bit for simplicity, especially
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* in 32 bit emulation mode. All time values are normalized to
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* nanoseconds.
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* Currently, two formats are known, which differ by the size of
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* this structure, i.e. the last two members are only set when
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* the extended channel measurement facility (first shipped in
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* z990 machines) is activated.
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* Potentially, more fields could be added, which would result in a
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* new ioctl number.
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*/
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struct cmbdata {
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__u64 size;
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__u64 elapsed_time;
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/* basic and exended format: */
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__u64 ssch_rsch_count;
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__u64 sample_count;
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__u64 device_connect_time;
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__u64 function_pending_time;
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__u64 device_disconnect_time;
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__u64 control_unit_queuing_time;
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__u64 device_active_only_time;
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/* extended format only: */
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__u64 device_busy_time;
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__u64 initial_command_response_time;
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};
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/* enable channel measurement */
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#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32)
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/* enable channel measurement */
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#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33)
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/* read channel measurement data */
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#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata)
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#endif /* _UAPIS390_CMB_H */
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