diff options
Diffstat (limited to 'integrationtests')
| -rw-r--r-- | integrationtests/misc_test.go | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/integrationtests/misc_test.go b/integrationtests/misc_test.go index 4f171bb..925f292 100644 --- a/integrationtests/misc_test.go +++ b/integrationtests/misc_test.go @@ -7,20 +7,24 @@ import "testing" // Note: the tracer names the uname tracepoint after the underlying kernel // syscall sys_newuname, i.e. "newuname" (not "uname"). vmsplice and alarm are // issued too, but the must-haves below are the three pure-read calls whose -// tracepoints are guaranteed to fire deterministically. (alarm is classified -// FamilyTime, not Misc — it shares setitimer's ITIMER_REAL timer — but the -// misc-basic scenario still issues alarm(0) as a harmless cancel, and the -// -trace-syscalls filter is by syscall name, so it is captured regardless.) +// tracepoints are guaranteed to fire deterministically. Neither vmsplice nor +// alarm is a Misc-family syscall: vmsplice is FamilyNetwork — the iovec<->pipe +// variant of splice(2), sibling to splice/tee whose transfer coverage lives in +// retbytes_test.go — and alarm is FamilyTime (it shares setitimer's ITIMER_REAL +// timer). The misc-basic scenario still issues both as harmless side-effect-free +// calls, and the -trace-syscalls filter is by syscall name, so they are captured +// regardless of family. var miscTraceArgs = []string{ "-trace-syscalls", "getcpu,newuname,sysinfo,vmsplice,alarm", } // TestMiscBasic verifies the Misc syscall family is traced end-to-end. The -// misc-basic workload issues getcpu, uname (sys_newuname), sysinfo, vmsplice -// (into a self-drained pipe), and alarm(0) — all unprivileged, non-blocking, -// and free of global side effects. Each required syscall must appear as an -// enter event attributed to the ioworkload process. +// misc-basic workload issues getcpu, uname (sys_newuname), and sysinfo (the +// three Misc-family must-haves asserted below), plus vmsplice (FamilyNetwork, +// into a self-drained pipe) and alarm(0) (FamilyTime) — all unprivileged, +// non-blocking, and free of global side effects. Each required syscall must +// appear as an enter event attributed to the ioworkload process. func TestMiscBasic(t *testing.T) { h := newTestHarness(t) result, pid, err := h.RunWithIorArgs("misc-basic", defaultDuration, miscTraceArgs) |