mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
Juergen Christ
72b5e8b313
cpacfstatsd now correctly handles offline cpus and dynamically attaches to cpus once they get online. If events are enabled when a hotplug event occurs, cpacfstatsd uses a pseudo-counter to notify user applications about the occurence of this event and a potential data inaccuracy. cpacfstats shows if a hotplug event has been detected since at least one counter was activated. As soon as all counters are deactivated, the hotplug detection state is reset. Signed-off-by: Juergen Christ <jchrist@linux.ibm.com> Reviewed-By: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
123 lines
2.1 KiB
C
123 lines
2.1 KiB
C
/*
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* cpacfstats - display and maintain CPACF perf counters
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*
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* common function prototypes and definitions
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*
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* Copyright IBM Corp. 2015, 2020
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef CPACFSTATS_H
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#define CPACFSTATS_H
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#include "lib/zt_common.h"
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#define COPYRIGHT "Copyright IBM Corp. 2015, 2022"
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#define DEFAULT_SEND_TIMEOUT (2 * 1000)
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#define DEFAULT_RECV_TIMEOUT (2 * 1000)
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int eprint(const char *format, ...);
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/*
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* Counter names
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* ALL_COUNTER specifies the number of physical counters. Virtual
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* counters might be added afterwards.
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*/
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enum ctr_e {
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DES_FUNCTIONS = 0,
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AES_FUNCTIONS,
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SHA_FUNCTIONS,
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PRNG_FUNCTIONS,
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ECC_FUNCTIONS,
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ALL_COUNTER,
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HOTPLUG_DETECTED
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};
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enum type_e {
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QUERY = 0,
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ANSWER
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};
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enum cmd_e {
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PRINT = 0,
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ENABLE,
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DISABLE,
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RESET
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};
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enum state_e {
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DISABLED = 0,
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ENABLED,
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UNSUPPORTED
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};
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/*
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* query send from client to daemon
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* Consist of:
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* enum counter
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* enum command
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*/
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struct msg_query {
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uint32_t m_ctr;
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uint32_t m_cmd;
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} __packed;
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/*
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* answer send from daemon to client
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* Consist of:
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* enum counter
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* status code: < 0 error, 0 disabled, > 0 enabled
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* counter value
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*/
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struct msg_answer {
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uint32_t m_ctr;
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int32_t m_state;
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uint64_t m_value;
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} __packed;
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/* stats_sock.c */
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#define SERVER 1
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#define CLIENT 2
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#define BACKLOG 10
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#define SOCKET_FILE "/run/cpacfstatsd_socket"
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#define PID_FILE "/run/cpacfstatsd.pid"
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#define CPACFSTATS_GROUP "cpacfstats"
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struct msg_header {
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uint32_t m_ver;
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uint32_t m_type;
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} __packed;
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struct msg {
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struct msg_header head;
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union {
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struct msg_query query;
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struct msg_answer answer;
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};
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} __packed;
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int open_socket(int mode);
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int send_msg(int sfd, struct msg *m, int timeout);
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int recv_msg(int sfd, struct msg *m, int timeout);
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/* perf_crypto.c */
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int perf_init(void);
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void perf_stop(void);
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void perf_close(void);
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int perf_enable_ctr(enum ctr_e ctr);
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int perf_disable_ctr(enum ctr_e ctr);
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int perf_reset_ctr(enum ctr_e ctr);
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int perf_read_ctr(enum ctr_e ctr, uint64_t *value);
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int perf_ecc_supported(void);
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int perf_ctr_state(enum ctr_e ctr);
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#endif
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