Adding upstream version 1.12.0.upstream/1.12.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 519 insertions, 0 deletions

diff --git a/collectors/proc.plugin/proc_meminfo.c b/collectors/proc.plugin/proc_meminfo.c
new file mode 100644
index 0000000..ae399c4
--- /dev/null
+++ b/collectors/proc.plugin/proc_meminfo.c
@@ -0,0 +1,519 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_MEMINFO_NAME "/proc/meminfo"
+#define CONFIG_SECTION_PLUGIN_PROC_MEMINFO "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_MEMINFO_NAME
+
+int do_proc_meminfo(int update_every, usec_t dt) {
+    (void)dt;
+
+    static procfile *ff = NULL;
+    static int do_ram = -1, do_swap = -1, do_hwcorrupt = -1, do_committed = -1, do_writeback = -1, do_kernel = -1, do_slab = -1, do_hugepages = -1, do_transparent_hugepages = -1;
+
+    static ARL_BASE *arl_base = NULL;
+    static ARL_ENTRY *arl_hwcorrupted = NULL, *arl_memavailable = NULL;
+
+    static unsigned long long
+            MemTotal = 0,
+            MemFree = 0,
+            MemAvailable = 0,
+            Buffers = 0,
+            Cached = 0,
+            //SwapCached = 0,
+            //Active = 0,
+            //Inactive = 0,
+            //ActiveAnon = 0,
+            //InactiveAnon = 0,
+            //ActiveFile = 0,
+            //InactiveFile = 0,
+            //Unevictable = 0,
+            //Mlocked = 0,
+            SwapTotal = 0,
+            SwapFree = 0,
+            Dirty = 0,
+            Writeback = 0,
+            //AnonPages = 0,
+            //Mapped = 0,
+            //Shmem = 0,
+            Slab = 0,
+            SReclaimable = 0,
+            SUnreclaim = 0,
+            KernelStack = 0,
+            PageTables = 0,
+            NFS_Unstable = 0,
+            Bounce = 0,
+            WritebackTmp = 0,
+            //CommitLimit = 0,
+            Committed_AS = 0,
+            //VmallocTotal = 0,
+            VmallocUsed = 0,
+            //VmallocChunk = 0,
+            AnonHugePages = 0,
+            ShmemHugePages = 0,
+            HugePages_Total = 0,
+            HugePages_Free = 0,
+            HugePages_Rsvd = 0,
+            HugePages_Surp = 0,
+            Hugepagesize = 0,
+            //DirectMap4k = 0,
+            //DirectMap2M = 0,
+            HardwareCorrupted = 0;
+
+    if(unlikely(!arl_base)) {
+        do_ram          = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system ram", 1);
+        do_swap         = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system swap", CONFIG_BOOLEAN_AUTO);
+        do_hwcorrupt    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hardware corrupted ECC", CONFIG_BOOLEAN_AUTO);
+        do_committed    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "committed memory", 1);
+        do_writeback    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "writeback memory", 1);
+        do_kernel       = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "kernel memory", 1);
+        do_slab         = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "slab memory", 1);
+        do_hugepages    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hugepages", CONFIG_BOOLEAN_AUTO);
+        do_transparent_hugepages = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "transparent hugepages", CONFIG_BOOLEAN_AUTO);
+
+        arl_base = arl_create("meminfo", NULL, 60);
+        arl_expect(arl_base, "MemTotal", &MemTotal);
+        arl_expect(arl_base, "MemFree", &MemFree);
+        arl_memavailable = arl_expect(arl_base, "MemAvailable", &MemAvailable);
+        arl_expect(arl_base, "Buffers", &Buffers);
+        arl_expect(arl_base, "Cached", &Cached);
+        //arl_expect(arl_base, "SwapCached", &SwapCached);
+        //arl_expect(arl_base, "Active", &Active);
+        //arl_expect(arl_base, "Inactive", &Inactive);
+        //arl_expect(arl_base, "ActiveAnon", &ActiveAnon);
+        //arl_expect(arl_base, "InactiveAnon", &InactiveAnon);
+        //arl_expect(arl_base, "ActiveFile", &ActiveFile);
+        //arl_expect(arl_base, "InactiveFile", &InactiveFile);
+        //arl_expect(arl_base, "Unevictable", &Unevictable);
+        //arl_expect(arl_base, "Mlocked", &Mlocked);
+        arl_expect(arl_base, "SwapTotal", &SwapTotal);
+        arl_expect(arl_base, "SwapFree", &SwapFree);
+        arl_expect(arl_base, "Dirty", &Dirty);
+        arl_expect(arl_base, "Writeback", &Writeback);
+        //arl_expect(arl_base, "AnonPages", &AnonPages);
+        //arl_expect(arl_base, "Mapped", &Mapped);
+        //arl_expect(arl_base, "Shmem", &Shmem);
+        arl_expect(arl_base, "Slab", &Slab);
+        arl_expect(arl_base, "SReclaimable", &SReclaimable);
+        arl_expect(arl_base, "SUnreclaim", &SUnreclaim);
+        arl_expect(arl_base, "KernelStack", &KernelStack);
+        arl_expect(arl_base, "PageTables", &PageTables);
+        arl_expect(arl_base, "NFS_Unstable", &NFS_Unstable);
+        arl_expect(arl_base, "Bounce", &Bounce);
+        arl_expect(arl_base, "WritebackTmp", &WritebackTmp);
+        //arl_expect(arl_base, "CommitLimit", &CommitLimit);
+        arl_expect(arl_base, "Committed_AS", &Committed_AS);
+        //arl_expect(arl_base, "VmallocTotal", &VmallocTotal);
+        arl_expect(arl_base, "VmallocUsed", &VmallocUsed);
+        //arl_expect(arl_base, "VmallocChunk", &VmallocChunk);
+        arl_hwcorrupted = arl_expect(arl_base, "HardwareCorrupted", &HardwareCorrupted);
+        arl_expect(arl_base, "AnonHugePages", &AnonHugePages);
+        arl_expect(arl_base, "ShmemHugePages", &ShmemHugePages);
+        arl_expect(arl_base, "HugePages_Total", &HugePages_Total);
+        arl_expect(arl_base, "HugePages_Free", &HugePages_Free);
+        arl_expect(arl_base, "HugePages_Rsvd", &HugePages_Rsvd);
+        arl_expect(arl_base, "HugePages_Surp", &HugePages_Surp);
+        arl_expect(arl_base, "Hugepagesize", &Hugepagesize);
+        //arl_expect(arl_base, "DirectMap4k", &DirectMap4k);
+        //arl_expect(arl_base, "DirectMap2M", &DirectMap2M);
+    }
+
+    if(unlikely(!ff)) {
+        char filename[FILENAME_MAX + 1];
+        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo");
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+        if(unlikely(!ff))
+            return 1;
+    }
+
+    ff = procfile_readall(ff);
+    if(unlikely(!ff))
+        return 0; // we return 0, so that we will retry to open it next time
+
+    size_t lines = procfile_lines(ff), l;
+
+    arl_begin(arl_base);
+
+    for(l = 0; l < lines ;l++) {
+        size_t words = procfile_linewords(ff, l);
+        if(unlikely(words < 2)) continue;
+
+        if(unlikely(arl_check(arl_base,
+                procfile_lineword(ff, l, 0),
+                procfile_lineword(ff, l, 1)))) break;
+    }
+
+    // --------------------------------------------------------------------
+
+    // http://stackoverflow.com/questions/3019748/how-to-reliably-measure-available-memory-in-linux
+    unsigned long long MemCached = Cached + SReclaimable;
+    unsigned long long MemUsed = MemTotal - MemFree - MemCached - Buffers;
+
+    if(do_ram) {
+        {
+            static RRDSET *st_system_ram = NULL;
+            static RRDDIM *rd_free = NULL, *rd_used = NULL, *rd_cached = NULL, *rd_buffers = NULL;
+
+            if(unlikely(!st_system_ram)) {
+                st_system_ram = rrdset_create_localhost(
+                        "system"
+                        , "ram"
+                        , NULL
+                        , "ram"
+                        , NULL
+                        , "System RAM"
+                        , "MiB"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                        , NETDATA_CHART_PRIO_SYSTEM_RAM
+                        , update_every
+                        , RRDSET_TYPE_STACKED
+                );
+
+                rd_free    = rrddim_add(st_system_ram, "free",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+                rd_used    = rrddim_add(st_system_ram, "used",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+                rd_cached  = rrddim_add(st_system_ram, "cached",  NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+                rd_buffers = rrddim_add(st_system_ram, "buffers", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            }
+            else rrdset_next(st_system_ram);
+
+            rrddim_set_by_pointer(st_system_ram, rd_free,    MemFree);
+            rrddim_set_by_pointer(st_system_ram, rd_used,    MemUsed);
+            rrddim_set_by_pointer(st_system_ram, rd_cached,  MemCached);
+            rrddim_set_by_pointer(st_system_ram, rd_buffers, Buffers);
+
+            rrdset_done(st_system_ram);
+        }
+
+        if(arl_memavailable->flags & ARL_ENTRY_FLAG_FOUND) {
+            static RRDSET *st_mem_available = NULL;
+            static RRDDIM *rd_avail = NULL;
+
+            if(unlikely(!st_mem_available)) {
+                st_mem_available = rrdset_create_localhost(
+                        "mem"
+                        , "available"
+                        , NULL
+                        , "system"
+                        , NULL
+                        , "Available RAM for applications"
+                        , "MiB"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                        , NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE
+                        , update_every
+                        , RRDSET_TYPE_AREA
+                );
+
+                rd_avail   = rrddim_add(st_mem_available, "MemAvailable", "avail", 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            }
+            else rrdset_next(st_mem_available);
+
+            rrddim_set_by_pointer(st_mem_available, rd_avail, MemAvailable);
+
+            rrdset_done(st_mem_available);
+        }
+    }
+
+    // --------------------------------------------------------------------
+
+    unsigned long long SwapUsed = SwapTotal - SwapFree;
+
+    if(do_swap == CONFIG_BOOLEAN_YES || SwapTotal || SwapUsed || SwapFree) {
+        do_swap = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_system_swap = NULL;
+        static RRDDIM *rd_free = NULL, *rd_used = NULL;
+
+        if(unlikely(!st_system_swap)) {
+            st_system_swap = rrdset_create_localhost(
+                    "system"
+                    , "swap"
+                    , NULL
+                    , "swap"
+                    , NULL
+                    , "System Swap"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_SWAP
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rrdset_flag_set(st_system_swap, RRDSET_FLAG_DETAIL);
+
+            rd_free = rrddim_add(st_system_swap, "free",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_used = rrddim_add(st_system_swap, "used",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_system_swap);
+
+        rrddim_set_by_pointer(st_system_swap, rd_used, SwapUsed);
+        rrddim_set_by_pointer(st_system_swap, rd_free, SwapFree);
+
+        rrdset_done(st_system_swap);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(arl_hwcorrupted->flags & ARL_ENTRY_FLAG_FOUND && (do_hwcorrupt == CONFIG_BOOLEAN_YES || (do_hwcorrupt == CONFIG_BOOLEAN_AUTO && HardwareCorrupted > 0))) {
+        do_hwcorrupt = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_mem_hwcorrupt = NULL;
+        static RRDDIM *rd_corrupted = NULL;
+
+        if(unlikely(!st_mem_hwcorrupt)) {
+            st_mem_hwcorrupt = rrdset_create_localhost(
+                    "mem"
+                    , "hwcorrupt"
+                    , NULL
+                    , "ecc"
+                    , NULL
+                    , "Corrupted Memory, detected by ECC"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_HW
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rrdset_flag_set(st_mem_hwcorrupt, RRDSET_FLAG_DETAIL);
+
+            rd_corrupted = rrddim_add(st_mem_hwcorrupt, "HardwareCorrupted", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_hwcorrupt);
+
+        rrddim_set_by_pointer(st_mem_hwcorrupt, rd_corrupted, HardwareCorrupted);
+
+        rrdset_done(st_mem_hwcorrupt);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_committed) {
+        static RRDSET *st_mem_committed = NULL;
+        static RRDDIM *rd_committed = NULL;
+
+        if(unlikely(!st_mem_committed)) {
+            st_mem_committed = rrdset_create_localhost(
+                    "mem"
+                    , "committed"
+                    , NULL
+                    , "system"
+                    , NULL
+                    , "Committed (Allocated) Memory"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rrdset_flag_set(st_mem_committed, RRDSET_FLAG_DETAIL);
+
+            rd_committed = rrddim_add(st_mem_committed, "Committed_AS", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_committed);
+
+        rrddim_set_by_pointer(st_mem_committed, rd_committed, Committed_AS);
+
+        rrdset_done(st_mem_committed);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_writeback) {
+        static RRDSET *st_mem_writeback = NULL;
+        static RRDDIM *rd_dirty = NULL, *rd_writeback = NULL, *rd_fusewriteback = NULL, *rd_nfs_writeback = NULL, *rd_bounce = NULL;
+
+        if(unlikely(!st_mem_writeback)) {
+            st_mem_writeback = rrdset_create_localhost(
+                    "mem"
+                    , "writeback"
+                    , NULL
+                    , "kernel"
+                    , NULL
+                    , "Writeback Memory"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_KERNEL
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+            rrdset_flag_set(st_mem_writeback, RRDSET_FLAG_DETAIL);
+
+            rd_dirty         = rrddim_add(st_mem_writeback, "Dirty",         NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_writeback     = rrddim_add(st_mem_writeback, "Writeback",     NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_fusewriteback = rrddim_add(st_mem_writeback, "FuseWriteback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_nfs_writeback = rrddim_add(st_mem_writeback, "NfsWriteback",  NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_bounce        = rrddim_add(st_mem_writeback, "Bounce",        NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_writeback);
+
+        rrddim_set_by_pointer(st_mem_writeback, rd_dirty,         Dirty);
+        rrddim_set_by_pointer(st_mem_writeback, rd_writeback,     Writeback);
+        rrddim_set_by_pointer(st_mem_writeback, rd_fusewriteback, WritebackTmp);
+        rrddim_set_by_pointer(st_mem_writeback, rd_nfs_writeback, NFS_Unstable);
+        rrddim_set_by_pointer(st_mem_writeback, rd_bounce,        Bounce);
+
+        rrdset_done(st_mem_writeback);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_kernel) {
+        static RRDSET *st_mem_kernel = NULL;
+        static RRDDIM *rd_slab = NULL, *rd_kernelstack = NULL, *rd_pagetables = NULL, *rd_vmallocused = NULL;
+
+        if(unlikely(!st_mem_kernel)) {
+            st_mem_kernel = rrdset_create_localhost(
+                    "mem"
+                    , "kernel"
+                    , NULL
+                    , "kernel"
+                    , NULL
+                    , "Memory Used by Kernel"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_KERNEL + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rrdset_flag_set(st_mem_kernel, RRDSET_FLAG_DETAIL);
+
+            rd_slab        = rrddim_add(st_mem_kernel, "Slab",        NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_kernelstack = rrddim_add(st_mem_kernel, "KernelStack", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_pagetables  = rrddim_add(st_mem_kernel, "PageTables",  NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_vmallocused = rrddim_add(st_mem_kernel, "VmallocUsed", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_kernel);
+
+        rrddim_set_by_pointer(st_mem_kernel, rd_slab,        Slab);
+        rrddim_set_by_pointer(st_mem_kernel, rd_kernelstack, KernelStack);
+        rrddim_set_by_pointer(st_mem_kernel, rd_pagetables,  PageTables);
+        rrddim_set_by_pointer(st_mem_kernel, rd_vmallocused, VmallocUsed);
+
+        rrdset_done(st_mem_kernel);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_slab) {
+        static RRDSET *st_mem_slab = NULL;
+        static RRDDIM *rd_reclaimable = NULL, *rd_unreclaimable = NULL;
+
+        if(unlikely(!st_mem_slab)) {
+            st_mem_slab = rrdset_create_localhost(
+                    "mem"
+                    , "slab"
+                    , NULL
+                    , "slab"
+                    , NULL
+                    , "Reclaimable Kernel Memory"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_SLAB
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rrdset_flag_set(st_mem_slab, RRDSET_FLAG_DETAIL);
+
+            rd_reclaimable   = rrddim_add(st_mem_slab, "reclaimable",   NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_unreclaimable = rrddim_add(st_mem_slab, "unreclaimable", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_slab);
+
+        rrddim_set_by_pointer(st_mem_slab, rd_reclaimable, SReclaimable);
+        rrddim_set_by_pointer(st_mem_slab, rd_unreclaimable, SUnreclaim);
+
+        rrdset_done(st_mem_slab);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_hugepages == CONFIG_BOOLEAN_YES || (do_hugepages == CONFIG_BOOLEAN_AUTO && Hugepagesize != 0 && HugePages_Total != 0)) {
+        do_hugepages = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_mem_hugepages = NULL;
+        static RRDDIM *rd_used = NULL, *rd_free = NULL, *rd_rsvd = NULL, *rd_surp = NULL;
+
+        if(unlikely(!st_mem_hugepages)) {
+            st_mem_hugepages = rrdset_create_localhost(
+                    "mem"
+                    , "hugepages"
+                    , NULL
+                    , "hugepages"
+                    , NULL
+                    , "Dedicated HugePages Memory"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_HUGEPAGES + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rrdset_flag_set(st_mem_hugepages, RRDSET_FLAG_DETAIL);
+
+            rd_free = rrddim_add(st_mem_hugepages, "free",     NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_used = rrddim_add(st_mem_hugepages, "used",     NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_surp = rrddim_add(st_mem_hugepages, "surplus",  NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_rsvd = rrddim_add(st_mem_hugepages, "reserved", NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_hugepages);
+
+        rrddim_set_by_pointer(st_mem_hugepages, rd_used, HugePages_Total - HugePages_Free - HugePages_Rsvd);
+        rrddim_set_by_pointer(st_mem_hugepages, rd_free, HugePages_Free);
+        rrddim_set_by_pointer(st_mem_hugepages, rd_rsvd, HugePages_Rsvd);
+        rrddim_set_by_pointer(st_mem_hugepages, rd_surp, HugePages_Surp);
+
+        rrdset_done(st_mem_hugepages);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_transparent_hugepages == CONFIG_BOOLEAN_YES || (do_transparent_hugepages == CONFIG_BOOLEAN_AUTO && (AnonHugePages != 0 || ShmemHugePages != 0))) {
+        do_transparent_hugepages = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_mem_transparent_hugepages = NULL;
+        static RRDDIM *rd_anonymous = NULL, *rd_shared = NULL;
+
+        if(unlikely(!st_mem_transparent_hugepages)) {
+            st_mem_transparent_hugepages = rrdset_create_localhost(
+                    "mem"
+                    , "transparent_hugepages"
+                    , NULL
+                    , "hugepages"
+                    , NULL
+                    , "Transparent HugePages Memory"
+                    , "MiB"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_MEM_HUGEPAGES
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rrdset_flag_set(st_mem_transparent_hugepages, RRDSET_FLAG_DETAIL);
+
+            rd_anonymous = rrddim_add(st_mem_transparent_hugepages, "anonymous",  NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_shared    = rrddim_add(st_mem_transparent_hugepages, "shmem",      NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st_mem_transparent_hugepages);
+
+        rrddim_set_by_pointer(st_mem_transparent_hugepages, rd_anonymous, AnonHugePages);
+        rrddim_set_by_pointer(st_mem_transparent_hugepages, rd_shared, ShmemHugePages);
+
+        rrdset_done(st_mem_transparent_hugepages);
+    }
+
+    return 0;
+}
+