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Generate KTR trace records for syscall enter and exit in i386 system

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calls.  Note that the information included is a bit different from the
existing KTR traces generated on powerpc, as I'm primarily interested
in kernel context (thread, syscall #, proc, etc), not the user
arguments to the system call.  Some convergence would be useful here.
This commit is contained in:
Robert Watson 2004-08-06 21:56:26 +00:00
parent 3659f747f1
commit f6b61a6442
1 changed files with 6 additions and 0 deletions
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6
sys/i386/i386/trap.c
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@ -983,6 +983,9 @@ syscall(frame)
ktrsyscall(code, narg, args);
#endif
CTR4(KTR_SYSC, "syscall enter thread %p pid %d proc %s code %d", td,
td->td_proc->p_pid, td->td_proc->p_comm, code);
/*
* Try to run the syscall without Giant if the syscall
* is MP safe.
@ -1050,6 +1053,9 @@ syscall(frame)
*/
userret(td, &frame, sticks);
CTR4(KTR_SYSC, "syscall exit thread %p pid %d proc %s code %d", td,
td->td_proc->p_pid, td->td_proc->p_comm, code);
#ifdef KTRACE
if (KTRPOINT(td, KTR_SYSRET))
ktrsysret(code, error, td->td_retval[0]);