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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_EBPF_DISK_H
#define NETDATA_EBPF_DISK_H 1
// Module name & description
#define NETDATA_EBPF_MODULE_NAME_DISK "disk"
#define NETDATA_EBPF_DISK_MODULE_DESC "Monitor disk latency independent of filesystem."
#include "libnetdata/avl/avl.h"
#include "libnetdata/ebpf/ebpf.h"
#define NETDATA_EBPF_PROC_PARTITIONS "/proc/partitions"
// Process configuration name
#define NETDATA_DISK_CONFIG_FILE "disk.conf"
// Decode function extracted from: https://elixir.bootlin.com/linux/v5.10.8/source/include/linux/kdev_t.h#L7
#define MINORBITS 20
#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi))
enum netdata_latency_disks_flags {
NETDATA_DISK_NONE = 0,
NETDATA_DISK_ADDED_TO_PLOT_LIST = 1,
NETDATA_DISK_CHART_CREATED = 2,
NETDATA_DISK_IS_HERE = 4,
NETDATA_DISK_HAS_EFI = 8
};
/*
* The definition (DISK_NAME_LEN) has been a stable value since Kernel 3.0,
* I decided to bring it as internal definition, to avoid include linux/genhd.h.
*/
#define NETDATA_DISK_NAME_LEN 32
typedef struct netdata_ebpf_disks {
// Search
avl_t avl;
uint32_t dev;
uint32_t major;
uint32_t minor;
uint32_t bootsector_key;
uint64_t start; // start sector
uint64_t end; // end sector
// Print information
char family[NETDATA_DISK_NAME_LEN + 1];
char *boot_chart;
netdata_ebpf_histogram_t histogram;
uint32_t flags;
time_t last_update;
struct netdata_ebpf_disks *main;
struct netdata_ebpf_disks *boot_partition;
struct netdata_ebpf_disks *next;
} netdata_ebpf_disks_t;
enum ebpf_disk_tables { NETDATA_DISK_IO };
typedef struct block_key {
uint32_t bin;
uint32_t dev;
} block_key_t;
typedef struct netdata_ebpf_publish_disk {
netdata_ebpf_disks_t *plot;
struct netdata_ebpf_publish_disk *next;
} ebpf_publish_disk_t;
#define NETDATA_EBPF_DISK_LATENCY_CONTEXT "disk.latency_io"
extern struct config disk_config;
void *ebpf_disk_thread(void *ptr);
#endif /* NETDATA_EBPF_DISK_H */
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