Re: [PATCH v3 0/2] mm: vmscan: add PID and cgroup ID to vmscan tracepoints

[Andrew Morton <akpm@linux-foundation.org>]

On Mon,  5 Jan 2026 08:04:21 -0800 Thomas Ballasi <tballasi@linux.microsoft.com> wrote:

> Changes in v3:
> - Swapped multiple field entries to prevent a hole in the ring buffer
> - Replaced in_task() with __event_in_irq
> - Replaced mem_cgroup_id(memcg) with cgroup_id(memcg->css.cgroup)
> - Rebased the tree to latest 6.18

x86_64 allmodconfig;


In file included from ./include/trace/define_trace.h:132,
                 from ./include/trace/events/vmscan.h:569,
                 from mm/vmscan.c:73:
./include/trace/events/vmscan.h: In function 'trace_raw_output_mm_vmscan_direct_reclaim_begin_template':
./include/trace/events/vmscan.h:140:17: error: implicit declaration of function '__event_in_irq' [-Wimplicit-function-declaration]
  140 | +               __event_in_irq() ? "(in-irq)" : "")
      |                 ^~~~~~~~~~~~~~
./include/trace/trace_events.h:219:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
  219 |         trace_event_printf(iter, print);                                \
      |                                  ^~~~~
./include/trace/events/vmscan.h:135:9: note: in expansion of macro 'TP_printk'
  135 |         TP_printk("order=%d gfp_flags=%s pid=%d memcg_id=%u %s",
      |         ^~~~~~~~~
make[3]: *** [scripts/Makefile.build:287: mm/vmscan.o] Error 1
make[2]: *** [scripts/Makefile.build:556: mm] Error 2
make[1]: *** [/usr/src/25/Makefile:2054: .] Error 2
make: *** [Makefile:248: __sub-make] Error 2