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| author | John Birrell <jb@FreeBSD.org> | 2008-05-24 06:22:16 +0000 |
|---|---|---|
| committer | John Birrell <jb@FreeBSD.org> | 2008-05-24 06:22:16 +0000 |
| commit | 5d217f173ca18f049d5341146b171c1f18c5fc07 (patch) | |
| tree | 5d1a1433c24202dd7d4681d388f6df0788664c25 /sys/kern/kern_sig.c | |
| parent | f72ab79315e95e06d34784aef96cc36372b15cc1 (diff) | |
| download | src-5d217f173ca18f049d5341146b171c1f18c5fc07.tar.gz src-5d217f173ca18f049d5341146b171c1f18c5fc07.zip | |
Add DTrace 'proc' provider probes using the Statically Defined Trace
(sdt) mechanism.
Notes
Notes:
svn path=/head/; revision=179276
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 6fc597b5c30a..ff02ee3cb94b 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$"); #include "opt_compat.h" +#include "opt_kdtrace.h" #include "opt_ktrace.h" #include <sys/param.h> @@ -59,6 +60,7 @@ __FBSDID("$FreeBSD$"); #include <sys/posix4.h> #include <sys/pioctl.h> #include <sys/resourcevar.h> +#include <sys/sdt.h> #include <sys/sbuf.h> #include <sys/sleepqueue.h> #include <sys/smp.h> @@ -82,6 +84,19 @@ __FBSDID("$FreeBSD$"); #define ONSIG 32 /* NSIG for osig* syscalls. XXX. */ +SDT_PROVIDER_DECLARE(proc); +SDT_PROBE_DEFINE(proc, kernel, , signal_send); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_send, 0, "struct thread *"); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_send, 1, "struct proc *"); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_send, 2, "int"); +SDT_PROBE_DEFINE(proc, kernel, , signal_clear); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_clear, 0, "int"); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_clear, 1, "ksiginfo_t *"); +SDT_PROBE_DEFINE(proc, kernel, , signal_discard); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_discard, 0, "struct thread *"); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_discard, 1, "struct proc *"); +SDT_PROBE_ARGTYPE(proc, kernel, , signal_discard, 2, "int"); + static int coredump(struct thread *); static char *expand_name(const char *, uid_t, pid_t); static int killpg1(struct thread *td, int sig, int pgid, int all); @@ -1236,6 +1251,9 @@ out: ksiginfo_init(ksi); sigqueue_get(&td->td_sigqueue, sig, ksi); ksi->ksi_signo = sig; + + SDT_PROBE(proc, kernel, , signal_clear, sig, ksi, 0, 0, 0); + if (ksi->ksi_code == SI_TIMER) itimer_accept(p, ksi->ksi_timerid, ksi); error = 0; @@ -1976,6 +1994,8 @@ tdsignal(struct proc *p, struct thread *td, int sig, ksiginfo_t *ksi) sigqueue = &td->td_sigqueue; } + SDT_PROBE(proc, kernel, , signal_send, td, p, sig, 0, 0 ); + /* * If the signal is being ignored, * then we forget about it immediately. @@ -1985,6 +2005,8 @@ tdsignal(struct proc *p, struct thread *td, int sig, ksiginfo_t *ksi) */ mtx_lock(&ps->ps_mtx); if (SIGISMEMBER(ps->ps_sigignore, sig)) { + SDT_PROBE(proc, kernel, , signal_discard, ps, td, sig, 0, 0 ); + mtx_unlock(&ps->ps_mtx); if (ksi && (ksi->ksi_flags & KSI_INS)) ksiginfo_tryfree(ksi); |