* ref!: convert linux meminfo implementation to use procfs lib
Part of #2957
Prometheus' procfs lib supports collecting memory info and we're using a
new enough version of the lib that has it available, so this converts
the meminfo collector for Linux to use data from procfs lib instead. The
bits I've touched for darwin/openbsd/netbsd are with intent to preserve
the original struct implementation/backwards compatibility.
Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>
* fix: meminfo debug log unsupported value
Fixes:
```
ts=2024-06-11T19:04:55.591Z caller=meminfo.go:44 level=debug collector=meminfo msg="Set node_mem" memInfo="unsupported value type"
```
Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>
* fix: don't coerce nil Meminfo entries to 0, leave out if nil
Nil entries in procfs.Meminfo fields indicate that the value isn't
present on the system. Coercing those nil values to `0` introduces new
metrics on systems that should not be present and can break some
queries.
Addresses PR feedback:
https://github.com/prometheus/node_exporter/pull/3049#discussion_r1637581536https://github.com/prometheus/node_exporter/pull/3049#discussion_r1637584482
Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>
---------
Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>
* Correctly cast Darwin memory info
* Cast stats to float64 before doing math on them to avoid integer
wrapping.
* Remove invalid `_total` suffix from gauge values.
* Handle counters in `meminfo.go`.
Signed-off-by: Ben Kochie <superq@gmail.com>
