[PATCH v9 20/20] tools/perf: Add RISC-V CounterIDMask event field

[Atish Patra <atish.patra@linux.dev>]

From: Atish Patra <atishp@rivosinc.com>

Counter delegation lets supervisor mode choose the hpmcounter for an event,
but the hardware may only allow a given event on a subset of counters. Add
a RISC-V specific "CounterIDMask" json event field, handled like the other
arch-specific entries in event_fields[], that carries the allowed-counter
bitmask through to the driver's existing counterid_mask (config2:0-31)
format.

The value is the bitmask directly so no counter-list to bitmask
conversion is needed, and because the field is RISC-V specific it is a
no-op for every other architecture's events (unlike the shared "Counter"
field).

Signed-off-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/jevents.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index e9c6b7990880..e79143af6aa0 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -396,6 +396,7 @@ class JsonEvent:
         ('EnAllSlices', 'enallslices='),
         ('SliceId', 'sliceid='),
         ('ThreadMask', 'threadmask='),
+        ('CounterIDMask', 'counterid_mask='),
     ]
     for key, value in event_fields:
       if key in jd and not is_zero(jd[key]):

-- 
2.53.0-Meta