qga: move linux disk/cpu stats command impls to commands-linux.c
The qmp_guest_{diskstats,cpustats} command impls in
commands-posix.c are surrounded by '#ifdef __linux__' so should
instead live in commands-linux.c
This also removes a "#ifdef CONFIG_LINUX" that was nested inside
a "#ifdef __linux__".
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-ID: <20240712132459.3974109-6-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
This commit is contained in:
Daniel P. Berrangé
Konstantin Kostiuk
parent
329cefe405
commit
74cbd9bcef
@ -1594,3 +1594,198 @@ int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
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return processed;
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}
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#define MAX_NAME_LEN 128
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static GuestDiskStatsInfoList *guest_get_diskstats(Error **errp)
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{
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GuestDiskStatsInfoList *head = NULL, **tail = &head;
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const char *diskstats = "/proc/diskstats";
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FILE *fp;
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size_t n;
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char *line = NULL;
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fp = fopen(diskstats, "r");
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if (fp == NULL) {
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error_setg_errno(errp, errno, "open(\"%s\")", diskstats);
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return NULL;
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}
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while (getline(&line, &n, fp) != -1) {
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g_autofree GuestDiskStatsInfo *diskstatinfo = NULL;
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g_autofree GuestDiskStats *diskstat = NULL;
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char dev_name[MAX_NAME_LEN];
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unsigned int ios_pgr, tot_ticks, rq_ticks, wr_ticks, dc_ticks, fl_ticks;
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unsigned long rd_ios, rd_merges_or_rd_sec, rd_ticks_or_wr_sec, wr_ios;
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unsigned long wr_merges, rd_sec_or_wr_ios, wr_sec;
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unsigned long dc_ios, dc_merges, dc_sec, fl_ios;
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unsigned int major, minor;
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int i;
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i = sscanf(line, "%u %u %s %lu %lu %lu"
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"%lu %lu %lu %lu %u %u %u %u"
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"%lu %lu %lu %u %lu %u",
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&major, &minor, dev_name,
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&rd_ios, &rd_merges_or_rd_sec, &rd_sec_or_wr_ios,
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&rd_ticks_or_wr_sec, &wr_ios, &wr_merges, &wr_sec,
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&wr_ticks, &ios_pgr, &tot_ticks, &rq_ticks,
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&dc_ios, &dc_merges, &dc_sec, &dc_ticks,
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&fl_ios, &fl_ticks);
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if (i < 7) {
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continue;
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}
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diskstatinfo = g_new0(GuestDiskStatsInfo, 1);
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diskstatinfo->name = g_strdup(dev_name);
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diskstatinfo->major = major;
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diskstatinfo->minor = minor;
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diskstat = g_new0(GuestDiskStats, 1);
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if (i == 7) {
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diskstat->has_read_ios = true;
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diskstat->read_ios = rd_ios;
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diskstat->has_read_sectors = true;
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diskstat->read_sectors = rd_merges_or_rd_sec;
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diskstat->has_write_ios = true;
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diskstat->write_ios = rd_sec_or_wr_ios;
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diskstat->has_write_sectors = true;
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diskstat->write_sectors = rd_ticks_or_wr_sec;
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}
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if (i >= 14) {
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diskstat->has_read_ios = true;
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diskstat->read_ios = rd_ios;
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diskstat->has_read_sectors = true;
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diskstat->read_sectors = rd_sec_or_wr_ios;
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diskstat->has_read_merges = true;
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diskstat->read_merges = rd_merges_or_rd_sec;
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diskstat->has_read_ticks = true;
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diskstat->read_ticks = rd_ticks_or_wr_sec;
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diskstat->has_write_ios = true;
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diskstat->write_ios = wr_ios;
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diskstat->has_write_sectors = true;
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diskstat->write_sectors = wr_sec;
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diskstat->has_write_merges = true;
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diskstat->write_merges = wr_merges;
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diskstat->has_write_ticks = true;
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diskstat->write_ticks = wr_ticks;
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diskstat->has_ios_pgr = true;
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diskstat->ios_pgr = ios_pgr;
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diskstat->has_total_ticks = true;
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diskstat->total_ticks = tot_ticks;
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diskstat->has_weight_ticks = true;
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diskstat->weight_ticks = rq_ticks;
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}
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if (i >= 18) {
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diskstat->has_discard_ios = true;
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diskstat->discard_ios = dc_ios;
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diskstat->has_discard_merges = true;
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diskstat->discard_merges = dc_merges;
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diskstat->has_discard_sectors = true;
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diskstat->discard_sectors = dc_sec;
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diskstat->has_discard_ticks = true;
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diskstat->discard_ticks = dc_ticks;
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}
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if (i >= 20) {
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diskstat->has_flush_ios = true;
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diskstat->flush_ios = fl_ios;
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diskstat->has_flush_ticks = true;
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diskstat->flush_ticks = fl_ticks;
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}
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diskstatinfo->stats = g_steal_pointer(&diskstat);
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QAPI_LIST_APPEND(tail, diskstatinfo);
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diskstatinfo = NULL;
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}
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free(line);
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fclose(fp);
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return head;
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}
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GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp)
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{
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return guest_get_diskstats(errp);
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}
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GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp)
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{
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GuestCpuStatsList *head = NULL, **tail = &head;
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const char *cpustats = "/proc/stat";
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int clk_tck = sysconf(_SC_CLK_TCK);
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FILE *fp;
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size_t n;
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char *line = NULL;
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fp = fopen(cpustats, "r");
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if (fp == NULL) {
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error_setg_errno(errp, errno, "open(\"%s\")", cpustats);
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return NULL;
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}
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while (getline(&line, &n, fp) != -1) {
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GuestCpuStats *cpustat = NULL;
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GuestLinuxCpuStats *linuxcpustat;
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int i;
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unsigned long user, system, idle, iowait, irq, softirq, steal, guest;
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unsigned long nice, guest_nice;
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char name[64];
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i = sscanf(line, "%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
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name, &user, &nice, &system, &idle, &iowait, &irq, &softirq,
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&steal, &guest, &guest_nice);
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/* drop "cpu 1 2 3 ...", get "cpuX 1 2 3 ..." only */
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if ((i == EOF) || strncmp(name, "cpu", 3) || (name[3] == '\0')) {
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continue;
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}
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if (i < 5) {
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slog("Parsing cpu stat from %s failed, see \"man proc\"", cpustats);
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break;
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}
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cpustat = g_new0(GuestCpuStats, 1);
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cpustat->type = GUEST_CPU_STATS_TYPE_LINUX;
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linuxcpustat = &cpustat->u.q_linux;
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linuxcpustat->cpu = atoi(&name[3]);
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linuxcpustat->user = user * 1000 / clk_tck;
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linuxcpustat->nice = nice * 1000 / clk_tck;
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linuxcpustat->system = system * 1000 / clk_tck;
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linuxcpustat->idle = idle * 1000 / clk_tck;
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if (i > 5) {
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linuxcpustat->has_iowait = true;
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linuxcpustat->iowait = iowait * 1000 / clk_tck;
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}
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if (i > 6) {
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linuxcpustat->has_irq = true;
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linuxcpustat->irq = irq * 1000 / clk_tck;
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linuxcpustat->has_softirq = true;
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linuxcpustat->softirq = softirq * 1000 / clk_tck;
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}
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if (i > 8) {
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linuxcpustat->has_steal = true;
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linuxcpustat->steal = steal * 1000 / clk_tck;
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}
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if (i > 9) {
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linuxcpustat->has_guest = true;
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linuxcpustat->guest = guest * 1000 / clk_tck;
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}
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if (i > 10) {
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linuxcpustat->has_guest = true;
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linuxcpustat->guest = guest * 1000 / clk_tck;
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linuxcpustat->has_guestnice = true;
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linuxcpustat->guestnice = guest_nice * 1000 / clk_tck;
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}
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QAPI_LIST_APPEND(tail, cpustat);
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}
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free(line);
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fclose(fp);
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return head;
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}
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@ -1195,205 +1195,6 @@ GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
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return info;
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}
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#define MAX_NAME_LEN 128
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static GuestDiskStatsInfoList *guest_get_diskstats(Error **errp)
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{
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#ifdef CONFIG_LINUX
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GuestDiskStatsInfoList *head = NULL, **tail = &head;
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const char *diskstats = "/proc/diskstats";
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FILE *fp;
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size_t n;
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char *line = NULL;
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fp = fopen(diskstats, "r");
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if (fp == NULL) {
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error_setg_errno(errp, errno, "open(\"%s\")", diskstats);
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return NULL;
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}
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while (getline(&line, &n, fp) != -1) {
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g_autofree GuestDiskStatsInfo *diskstatinfo = NULL;
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g_autofree GuestDiskStats *diskstat = NULL;
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char dev_name[MAX_NAME_LEN];
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unsigned int ios_pgr, tot_ticks, rq_ticks, wr_ticks, dc_ticks, fl_ticks;
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unsigned long rd_ios, rd_merges_or_rd_sec, rd_ticks_or_wr_sec, wr_ios;
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unsigned long wr_merges, rd_sec_or_wr_ios, wr_sec;
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unsigned long dc_ios, dc_merges, dc_sec, fl_ios;
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unsigned int major, minor;
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int i;
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i = sscanf(line, "%u %u %s %lu %lu %lu"
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"%lu %lu %lu %lu %u %u %u %u"
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"%lu %lu %lu %u %lu %u",
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&major, &minor, dev_name,
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&rd_ios, &rd_merges_or_rd_sec, &rd_sec_or_wr_ios,
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&rd_ticks_or_wr_sec, &wr_ios, &wr_merges, &wr_sec,
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&wr_ticks, &ios_pgr, &tot_ticks, &rq_ticks,
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&dc_ios, &dc_merges, &dc_sec, &dc_ticks,
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&fl_ios, &fl_ticks);
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if (i < 7) {
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continue;
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}
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diskstatinfo = g_new0(GuestDiskStatsInfo, 1);
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diskstatinfo->name = g_strdup(dev_name);
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diskstatinfo->major = major;
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diskstatinfo->minor = minor;
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diskstat = g_new0(GuestDiskStats, 1);
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if (i == 7) {
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diskstat->has_read_ios = true;
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diskstat->read_ios = rd_ios;
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diskstat->has_read_sectors = true;
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diskstat->read_sectors = rd_merges_or_rd_sec;
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diskstat->has_write_ios = true;
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diskstat->write_ios = rd_sec_or_wr_ios;
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diskstat->has_write_sectors = true;
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diskstat->write_sectors = rd_ticks_or_wr_sec;
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}
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if (i >= 14) {
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diskstat->has_read_ios = true;
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diskstat->read_ios = rd_ios;
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diskstat->has_read_sectors = true;
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diskstat->read_sectors = rd_sec_or_wr_ios;
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diskstat->has_read_merges = true;
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diskstat->read_merges = rd_merges_or_rd_sec;
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diskstat->has_read_ticks = true;
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diskstat->read_ticks = rd_ticks_or_wr_sec;
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diskstat->has_write_ios = true;
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diskstat->write_ios = wr_ios;
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diskstat->has_write_sectors = true;
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diskstat->write_sectors = wr_sec;
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diskstat->has_write_merges = true;
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diskstat->write_merges = wr_merges;
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diskstat->has_write_ticks = true;
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diskstat->write_ticks = wr_ticks;
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diskstat->has_ios_pgr = true;
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diskstat->ios_pgr = ios_pgr;
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diskstat->has_total_ticks = true;
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diskstat->total_ticks = tot_ticks;
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diskstat->has_weight_ticks = true;
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diskstat->weight_ticks = rq_ticks;
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}
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if (i >= 18) {
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diskstat->has_discard_ios = true;
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diskstat->discard_ios = dc_ios;
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diskstat->has_discard_merges = true;
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diskstat->discard_merges = dc_merges;
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diskstat->has_discard_sectors = true;
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diskstat->discard_sectors = dc_sec;
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diskstat->has_discard_ticks = true;
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diskstat->discard_ticks = dc_ticks;
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}
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if (i >= 20) {
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diskstat->has_flush_ios = true;
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diskstat->flush_ios = fl_ios;
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diskstat->has_flush_ticks = true;
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diskstat->flush_ticks = fl_ticks;
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}
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diskstatinfo->stats = g_steal_pointer(&diskstat);
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QAPI_LIST_APPEND(tail, diskstatinfo);
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diskstatinfo = NULL;
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}
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free(line);
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fclose(fp);
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return head;
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#else
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g_debug("disk stats reporting available only for Linux");
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return NULL;
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#endif
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}
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GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp)
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{
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return guest_get_diskstats(errp);
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}
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GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp)
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{
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GuestCpuStatsList *head = NULL, **tail = &head;
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const char *cpustats = "/proc/stat";
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int clk_tck = sysconf(_SC_CLK_TCK);
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FILE *fp;
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size_t n;
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char *line = NULL;
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fp = fopen(cpustats, "r");
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if (fp == NULL) {
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error_setg_errno(errp, errno, "open(\"%s\")", cpustats);
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return NULL;
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}
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while (getline(&line, &n, fp) != -1) {
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GuestCpuStats *cpustat = NULL;
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GuestLinuxCpuStats *linuxcpustat;
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int i;
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unsigned long user, system, idle, iowait, irq, softirq, steal, guest;
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unsigned long nice, guest_nice;
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char name[64];
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i = sscanf(line, "%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
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name, &user, &nice, &system, &idle, &iowait, &irq, &softirq,
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&steal, &guest, &guest_nice);
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/* drop "cpu 1 2 3 ...", get "cpuX 1 2 3 ..." only */
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if ((i == EOF) || strncmp(name, "cpu", 3) || (name[3] == '\0')) {
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continue;
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}
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if (i < 5) {
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slog("Parsing cpu stat from %s failed, see \"man proc\"", cpustats);
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break;
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}
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cpustat = g_new0(GuestCpuStats, 1);
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cpustat->type = GUEST_CPU_STATS_TYPE_LINUX;
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linuxcpustat = &cpustat->u.q_linux;
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linuxcpustat->cpu = atoi(&name[3]);
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linuxcpustat->user = user * 1000 / clk_tck;
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linuxcpustat->nice = nice * 1000 / clk_tck;
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linuxcpustat->system = system * 1000 / clk_tck;
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linuxcpustat->idle = idle * 1000 / clk_tck;
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if (i > 5) {
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linuxcpustat->has_iowait = true;
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linuxcpustat->iowait = iowait * 1000 / clk_tck;
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}
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if (i > 6) {
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linuxcpustat->has_irq = true;
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linuxcpustat->irq = irq * 1000 / clk_tck;
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linuxcpustat->has_softirq = true;
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linuxcpustat->softirq = softirq * 1000 / clk_tck;
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}
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if (i > 8) {
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linuxcpustat->has_steal = true;
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linuxcpustat->steal = steal * 1000 / clk_tck;
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}
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if (i > 9) {
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linuxcpustat->has_guest = true;
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linuxcpustat->guest = guest * 1000 / clk_tck;
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}
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if (i > 10) {
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linuxcpustat->has_guest = true;
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linuxcpustat->guest = guest * 1000 / clk_tck;
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linuxcpustat->has_guestnice = true;
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linuxcpustat->guestnice = guest_nice * 1000 / clk_tck;
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}
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QAPI_LIST_APPEND(tail, cpustat);
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}
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free(line);
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fclose(fp);
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return head;
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}
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#else /* defined(__linux__) */
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