Use smaps_rollup everywhere

[ktf]

No description provided.

[ktf]

@vascobarroso can I get a release with this? We do not support SLC7 anymore in any case, no? We currently have a performance regression on Alma9 due to what is fixed here.

[vascobarroso]

@sy-c could you have a look at Giulio's request above ?
Please check with DCS (Pete Bond) about the CC7 support, IIRC they needed it but they might also have plans to migrate.

[sy-c]

Hello, I don't know the context, but it seems to me that this fix can be made CC7 backward-compatible at no cost, with e.g.

#ifdef O2_MONITORING_OS_CC7
static constexpr auto SMAPS_FILE = "/proc/self/smaps";
#else
static constexpr auto SMAPS_FILE = "/proc/self/smaps_rollup";
#endif

[ktf]

Fair enough.

[ktf]

See #346