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: /proc/self/root/usr/lib/modules/5.15.0-1083-aws/build/arch/s390/include/uapi/asm/ [ drwxr-xr-x ]
name : hwctrset.h /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Copyright IBM Corp. 2021 * Interface implementation for communication with the CPU Measurement * counter facility device driver. * * Author(s): Thomas Richter <tmricht@linux.ibm.com> * * Define for ioctl() commands to communicate with the CPU Measurement * counter facility device driver. */ #ifndef _PERF_CPUM_CF_DIAG_H #define _PERF_CPUM_CF_DIAG_H #include <linux/ioctl.h> #include <linux/types.h> #define S390_HWCTR_DEVICE "hwctr" #define S390_HWCTR_START_VERSION 1 struct s390_ctrset_start { /* Set CPUs to operate on */ __u64 version; /* Version of interface */ __u64 data_bytes; /* # of bytes required */ __u64 cpumask_len; /* Length of CPU mask in bytes */ __u64 *cpumask; /* Pointer to CPU mask */ __u64 counter_sets; /* Bit mask of counter sets to get */ }; struct s390_ctrset_setdata { /* Counter set data */ __u32 set; /* Counter set number */ __u32 no_cnts; /* # of counters stored in cv[] */ __u64 cv[0]; /* Counter values (variable length) */ }; struct s390_ctrset_cpudata { /* Counter set data per CPU */ __u32 cpu_nr; /* CPU number */ __u32 no_sets; /* # of counters sets in data[] */ struct s390_ctrset_setdata data[0]; }; struct s390_ctrset_read { /* Structure to get all ctr sets */ __u64 no_cpus; /* Total # of CPUs data taken from */ struct s390_ctrset_cpudata data[0]; }; #define S390_HWCTR_MAGIC 'C' /* Random magic # for ioctls */ #define S390_HWCTR_START _IOWR(S390_HWCTR_MAGIC, 1, struct s390_ctrset_start) #define S390_HWCTR_STOP _IO(S390_HWCTR_MAGIC, 2) #define S390_HWCTR_READ _IOWR(S390_HWCTR_MAGIC, 3, struct s390_ctrset_read) #endif