eBPF process plugin (#7979)

* syscall_plugin: Compilation

This commit brings the necessaries changes to the compilation files

* syscall_plugin: Collector body

This commit brings the collector body to files.

* syscall_plugin: .gitignore

This commit adds syscall.plugin to .gitignore

* syscall_plugin: Plugin adjust

Fix reference and remove message

* syscall_plugin: Remove limit

Remove call to setrlimit

* syscall: Fix start

This commit fixes problems related with start of the plugin

* syscall_plugin: Bring heartbeat

This commit removes the sleep and changes to heartbeat to avoid plugin receive a SIGTERM

* syscall_plugin: Missing semicolon

* syscall_plugin: Fix dimension

Brings the initial value of chart for the normal dimension of the other values

* syscall_plugin: Fix dimension 2

The previous change did not give the expected results, so I am bringing more a fix

* syscall_plugin: adjust values

Rename function and adjust pid size

* syscall_plugin: Remove Chart and fix var

this commit removes a chart that will not be created and fix an error
when the bytes were calculated

* syscall_plugin: Brings error

This commit brings a new variable that will be used to identify errors

* syscall_plugin: Rename charts

This commit starts to rename the charts properly

* syscall_plugin: Rename plugin

* syscall_plugin: missing changes for rename

* syscall_plugin: fix compilation

* syscall_plugin: bring new charts

* syscall_plugin: Warnings

Remove warnings from compilation time

* vfs_plugin: Fix Error chart plot

There was an error when the chart was being displayed

* vfs_plugin: Change family

This commit changes the family of the VFS plugin

* vfs_plugin: Fix order

This PR fixes the wrong order when creating a chart

* vfs_plugin: Remove path

Remove path from structure

* vfs_plugin: From Perf to HASH

This commit converts the main source a hash table and also split the data collection per chart

* vfs_plugin: Adjusts and exit

This commit brings adjusts to the collect and the complete monitor to exit events

* vfs_plugin: Start process

This commit brings the monitoring of a process start and thread creation to Netdata

* vfs_plugin: Visualization and collection

Adjust variables to show and to collect data

* vfs_plugin: Connection with apps plugin

This commit starts to bring the connection with apps.

* vfs_plugin: Various

This commit brings new label for charts, fix to error chart and adjusts for new charts, I am sorry

* vfs_plugin: basis new chart

This commit brings the basis of the new charts for the plugin

* vfs_plugin: Apps plugin

This commit brings the integration with apps.plugin

* vfs_plugin:fix counter

This commit fixer the difference between apps plugin and counter

* ebpf_plugin: rename charts

This commit renames the charts

* ebpf_plugin: New charts adjusts and log start

* ebpf_plugin: Log thread

Creates the log thread that will be used to store error message

* ebpf_plugin: Rename Web Group

This commit reorganize the charts on dashboard

* ebpf_plugin: Restore

This commit restore the previous status of the collector where we only have a global vision of the problems

* ebpf_plugin: kretprobe

This commit brings the initial changes for the collector works with both eBPF program

* ebpf_plugin: New syscalls

This commit brings the new syscalls that we are monitoring

* ebpf_plugin: New charts

This commit brings new charts to the collector

* ebpf_plugin: Parse config

This commit starts the parser of the file

* ebpf_plugin: collector debug

* ebpf_plugin: Global variables from config

This commit brings the global variable update from the config file

* ebpf_plugin: Clean kprobe_events

This commit brings the clean of kprobe_events and also starts the common library for all eBPF collectors

* ebpf_plugin: Check kernel version

This function brings a check for the kernel version

* ebpf_plugin: Start documentation

This commit brings the initial documentation for the users

* ebpf_plugin: Documentation

This commit brings adjust to code and updates for the documentation

* ebpf_plugin: this commit brings the developer mode to the collector

* ebpf_plugin: Documentation

This commit brings more information to the documentation

* ebpf_plugin: Documentation

This commit brings more information to the documentation

* ebpf_plugin: errno to logs

Brings errno number to logs

* ebpf_plugin: Documentation

This commit brings fixes to the collector documentation

* ebpf_plugin: Move description

This commit move the chart description from the C code to dashboard_info.js

* ebpf_plugin: Rename files

This commit rename files to the final version

* ebpf_plugin: COntinue renaming

This commit continue renaming the files to the final version

* ebpf_plugin: Renaming process

This commit renames the final plugin

* ebpf_plugin: Finish rename

This commit finishes the rename processing

* ebpf_plugin: fix entry charts

This commit removes one chart from  mode

* ebpf_plugin: Fix remove

This commit brings a new function to fix the unload of collector when the collector
is running in entry mode

* ebpf_plugin: Rename on old kernels

This commit brings fixes for syscall names

* ebpf_plugin: Timestamp to log

This commit brings the timestamp to the logs

* ebpf_plugin: Remove syscall

With the changes on the backend, we are not monitoring more sys_clone

* ebpf_plugin: The syscall is important for 5.3 or newer, so I am returning

* ebpf_plugin: Remove concurrency

This commit adds variables necessary to interact with the new structor
of the eBPF program

* ebpf_plugin: Ids to dimension

This commit fews the functions name as ids for the dimensions

* ebpf_plugin: Missing chart

This commit brings the missing chart for Netdata

* ebpf_plugin: Remove unecessary message

Remove unecessary error message from the collector

* ebpf_plugin: Rename dimension

This commit renames the dimension for something more meaninful

* ebpf_plugin: Optional log

This commit converts the developer.log in an optional feature

* redirect to stdoou

This commit starts to bring the capability to redirect everything to stdout

* ebpf_plugin: Disable dev mode

This commit removes the possibility to load the dev mode file for while

* ebpf_plugin: Disable eBPF process

By default this plugin won't be enabled

* ebpf_plugin: Update debug message

* ebpf_plugin: this commit adjusts documentation to next release.

* ebpf_plugin: documentation fix.

* ebpf_plugin: Percpu hash

This commit moves from an unique hash table for various to speed up
the collector

* ebpf_plugin: Compatibility

This commit set compatibility version between kernels

1 files changed, 25 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 6bd01a37a8..730d539d4c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -385,6 +385,17 @@ PKG_CHECK_MODULES([JSON],[json-c],AC_CHECK_LIB(
 OPTIONAL_JSONC_LIBS="${JSONC_LIBS}"
 
 # -----------------------------------------------------------------------------
+# VFS plugin libs
+
+AC_CHECK_LIB(
+    [dl],
+    [dlopen],
+    [EBPF_LIBS="-ldl"]
+)
+
+OPTIONAL_EBPF_LIBS="${EBPF_LIBS}"
+
+# -----------------------------------------------------------------------------
 # DB engine and HTTPS
 test "${enable_dbengine}" = "yes" -a -z "${LZ4_LIBS}" && \
     AC_MSG_ERROR([liblz4 required but not found. Try installing 'liblz4-dev' or 'lz4-devel'.])
@@ -860,6 +871,17 @@ fi
 AC_MSG_RESULT([${enable_plugin_perf}])
 AM_CONDITIONAL([ENABLE_PLUGIN_PERF], [test "${enable_plugin_perf}" = "yes"])
 
+# -----------------------------------------------------------------------------
+# ebpf_process.plugin
+
+AC_MSG_CHECKING([if ebpf_process.plugin should be enabled])
+if test "${build_target}" == "linux" -a "${EBPF_LIBS}"; then
+    enable_vfs="yes"
+else
+    enable_vfs="no"
+fi
+AC_MSG_RESULT([${enable_vfs}])
+AM_CONDITIONAL([ENABLE_PLUGIN_EBPF], [test "${enable_vfs}" = "yes"])
 
 # -----------------------------------------------------------------------------
 # slabinfo.plugin
@@ -1196,6 +1218,7 @@ AC_SUBST([OPTIONAL_UV_LIBS])
 AC_SUBST([OPTIONAL_LZ4_LIBS])
 AC_SUBST([OPTIONAL_JUDY_LIBS])
 AC_SUBST([OPTIONAL_SSL_LIBS])
+AC_SUBST([OPTIONAL_EBPF_LIBS])
 AC_SUBST([OPTIONAL_JSONC_LIBS])
 AC_SUBST([OPTIONAL_NFACCT_CFLAGS])
 AC_SUBST([OPTIONAL_NFACCT_LIBS])
@@ -1276,6 +1299,7 @@ AC_CONFIG_FILES([
     collectors/python.d.plugin/Makefile
     collectors/slabinfo.plugin/Makefile
     collectors/statsd.plugin/Makefile
+    collectors/ebpf_process.plugin/Makefile
     collectors/tc.plugin/Makefile
     collectors/xenstat.plugin/Makefile
     collectors/perf.plugin/Makefile
@@ -1298,6 +1322,7 @@ AC_CONFIG_FILES([
     libnetdata/clocks/Makefile
     libnetdata/config/Makefile
     libnetdata/dictionary/Makefile
+    libnetdata/ebpf/Makefile
     libnetdata/eval/Makefile
     libnetdata/locks/Makefile
     libnetdata/log/Makefile