diff options
| author | Paul Buetow <paul@buetow.org> | 2026-05-29 10:13:18 +0300 |
|---|---|---|
| committer | Paul Buetow <paul@buetow.org> | 2026-05-29 10:13:18 +0300 |
| commit | 49b16417d9f52c8ddb48b158b73ccda31fd26982 (patch) | |
| tree | 476c463c6fa86874af4c211f993befb47af04e83 /internal/tracepoints | |
| parent | d0850ae4dd8688f07c67245ce4e30f90e073a9c1 (diff) | |
family: classify futex syscalls as IPC instead of Misc
Audit of futex_wake found that the futex family syscalls (futex,
futex_wait, futex_wake, futex_requeue, futex_waitv) were absent from the
syscallFamilies map and fell through to FamilyMisc. Per futex(2) ("fast
user-space locking"), these are shared-memory synchronization/IPC
primitives, conceptually identical to the System V semaphores
(semop/semget) already tagged FamilyIPC. Group them under IPC so
per-family aggregation/reporting bins them with the other synchronization
primitives.
Argument and return-value handling were already correct: futex_wake's
first arg (uaddr) is a userspace pointer, captured via KindFutex
(null_event), and the exit ret_event records the woken-waiter count
(>=0) or -1 on error.
Add lock-in unit tests in family_test.go and regenerate the C/Go
artifacts (generated_tracepoints.go, generated_types.go).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Diffstat (limited to 'internal/tracepoints')
| -rw-r--r-- | internal/tracepoints/generated_tracepoints.go | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/internal/tracepoints/generated_tracepoints.go b/internal/tracepoints/generated_tracepoints.go index 5ff2f5c..b1d3ce9 100644 --- a/internal/tracepoints/generated_tracepoints.go +++ b/internal/tracepoints/generated_tracepoints.go @@ -815,11 +815,11 @@ var syscallFamilies = map[string]string{ "fstatfs": "FS", "fsync": "FS", "ftruncate": "FS", - "futex": "Misc", - "futex_requeue": "Misc", - "futex_wait": "Misc", - "futex_waitv": "Misc", - "futex_wake": "Misc", + "futex": "IPC", + "futex_requeue": "IPC", + "futex_wait": "IPC", + "futex_waitv": "IPC", + "futex_wake": "IPC", "futimesat": "FS", "get_mempolicy": "Security", "get_robust_list": "Misc", |