/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _UAPIS390_CMB_H #define _UAPIS390_CMB_H #include <linux/types.h> /** * struct cmbdata - channel measurement block data for user space * @size: size of the stored data * @elapsed_time: time since last sampling * @ssch_rsch_count: number of ssch and rsch * @sample_count: number of samples * @device_connect_time: time of device connect * @function_pending_time: time of function pending * @device_disconnect_time: time of device disconnect * @control_unit_queuing_time: time of control unit queuing * @device_active_only_time: time of device active only * @device_busy_time: time of device busy (ext. format) * @initial_command_response_time: initial command response time (ext. format) * * All values are stored as 64 bit for simplicity, especially * in 32 bit emulation mode. All time values are normalized to * nanoseconds. * Currently, two formats are known, which differ by the size of * this structure, i.e. the last two members are only set when * the extended channel measurement facility (first shipped in * z990 machines) is activated. * Potentially, more fields could be added, which would result in a * new ioctl number. */ struct cmbdata { __u64 size; __u64 elapsed_time; /* basic and exended format: */ __u64 ssch_rsch_count; __u64 sample_count; __u64 device_connect_time; __u64 function_pending_time; __u64 device_disconnect_time; __u64 control_unit_queuing_time; __u64 device_active_only_time; /* extended format only: */ __u64 device_busy_time; __u64 initial_command_response_time; }; /* enable channel measurement */ #define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32) /* enable channel measurement */ #define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33) /* read channel measurement data */ #define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata) #endif /* _UAPIS390_CMB_H */
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bitsperlong.h | File | 293 B | 0644 |
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chsc.h | File | 2.96 KB | 0644 |
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clp.h | File | 549 B | 0644 |
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cmb.h | File | 1.87 KB | 0644 |
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dasd.h | File | 12.4 KB | 0644 |
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debug.h | File | 857 B | 0644 |
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guarded_storage.h | File | 1.18 KB | 0644 |
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hypfs.h | File | 1.35 KB | 0644 |
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ioctls.h | File | 191 B | 0644 |
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kvm.h | File | 7.73 KB | 0644 |
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kvm_perf.h | File | 474 B | 0644 |
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monwriter.h | File | 939 B | 0644 |
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msgbuf.h | File | 1.14 KB | 0644 |
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posix_types.h | File | 1.4 KB | 0644 |
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ptrace.h | File | 11.39 KB | 0644 |
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qeth.h | File | 3.05 KB | 0644 |
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schid.h | File | 332 B | 0644 |
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sclp_ctl.h | File | 465 B | 0644 |
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sembuf.h | File | 864 B | 0644 |
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setup.h | File | 292 B | 0644 |
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shmbuf.h | File | 1.34 KB | 0644 |
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sie.h | File | 9.25 KB | 0644 |
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sigcontext.h | File | 1.73 KB | 0644 |
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siginfo.h | File | 302 B | 0644 |
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signal.h | File | 3.26 KB | 0644 |
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socket.h | File | 2.24 KB | 0644 |
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stat.h | File | 2.9 KB | 0644 |
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statfs.h | File | 1.03 KB | 0644 |
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sthyi.h | File | 178 B | 0644 |
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tape390.h | File | 2.76 KB | 0644 |
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termios.h | File | 1.14 KB | 0644 |
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types.h | File | 525 B | 0644 |
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ucontext.h | File | 1.18 KB | 0644 |
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unistd.h | File | 12.32 KB | 0644 |
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virtio-ccw.h | File | 444 B | 0644 |
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vmcp.h | File | 737 B | 0644 |
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