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| author | Mark Johnston <markj@FreeBSD.org> | 2019-08-21 23:43:58 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2019-08-21 23:43:58 +0000 |
| commit | 5b699f1614221b8b158ea47562ab84a6dce34c72 (patch) | |
| tree | 28914c3796c5288b5a71cc791d34b1a5ee928746 /cddl/contrib/opensolaris/cmd/lockstat | |
| parent | 81f666e79dfde97ef26a61863b08c9e59eeb32c1 (diff) | |
| download | src-5b699f1614221b8b158ea47562ab84a6dce34c72.tar.gz src-5b699f1614221b8b158ea47562ab84a6dce34c72.zip | |
Add lockmgr(9) probes to the lockstat DTrace provider.
They follow the conventions set by rw and sx lock probes. There is
an additional lockstat:::lockmgr-disown probe.
Update lockstat(1) to report on contention and hold events for
lockmgr locks. Document the new probes in dtrace_lockstat.4, and
deduplicate some of the existing probe descriptions.
Reviewed by: mjg
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21355
Notes
Notes:
svn path=/head/; revision=351361
Diffstat (limited to 'cddl/contrib/opensolaris/cmd/lockstat')
| -rw-r--r-- | cddl/contrib/opensolaris/cmd/lockstat/lockstat.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c b/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c index 36a86b08377e..84796c3b004a 100644 --- a/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c +++ b/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c @@ -158,29 +158,33 @@ static ls_event_info_t g_event_info[LS_MAX_EVENTS] = { { 'C', "Lock", "R/W writer blocked by readers", "nsec", "lockstat:::rw-block", "arg2 == 0 && arg3 == 0 && arg4" }, { 'C', "Lock", "R/W reader blocked by writer", "nsec", - "lockstat:::rw-block", "arg2 != 0 && arg3 == 1" }, + "lockstat:::rw-block", "arg2 == 1 && arg3 == 1" }, { 'C', "Lock", "R/W reader blocked by write wanted", "nsec", - "lockstat:::rw-block", "arg2 != 0 && arg3 == 0 && arg4" }, + "lockstat:::rw-block", "arg2 == 1 && arg3 == 0 && arg4" }, { 'C', "Lock", "R/W writer spin on writer", "nsec", "lockstat:::rw-spin", "arg2 == 0 && arg3 == 1" }, { 'C', "Lock", "R/W writer spin on readers", "nsec", "lockstat:::rw-spin", "arg2 == 0 && arg3 == 0 && arg4" }, { 'C', "Lock", "R/W reader spin on writer", "nsec", - "lockstat:::rw-spin", "arg2 != 0 && arg3 == 1" }, + "lockstat:::rw-spin", "arg2 == 1 && arg3 == 1" }, { 'C', "Lock", "R/W reader spin on write wanted", "nsec", - "lockstat:::rw-spin", "arg2 != 0 && arg3 == 0 && arg4" }, + "lockstat:::rw-spin", "arg2 == 1 && arg3 == 0 && arg4" }, { 'C', "Lock", "SX exclusive block", "nsec", "lockstat:::sx-block", "arg2 == 0" }, { 'C', "Lock", "SX shared block", "nsec", - "lockstat:::sx-block", "arg2 != 0" }, + "lockstat:::sx-block", "arg2 == 1" }, { 'C', "Lock", "SX exclusive spin", "nsec", "lockstat:::sx-spin", "arg2 == 0" }, { 'C', "Lock", "SX shared spin", "nsec", - "lockstat:::sx-spin", "arg2 != 0" }, - { 'C', "Lock", "Unknown event (type 16)", "units" }, - { 'C', "Lock", "Unknown event (type 17)", "units" }, - { 'C', "Lock", "Unknown event (type 18)", "units" }, - { 'C', "Lock", "Unknown event (type 19)", "units" }, + "lockstat:::sx-spin", "arg2 == 1" }, + { 'C', "Lock", "lockmgr writer blocked by writer", "nsec", + "lockstat:::lockmgr-block", "arg2 == 0 && arg3 == 1" }, + { 'C', "Lock", "lockmgr writer blocked by readers", "nsec", + "lockstat:::lockmgr-block", "arg2 == 0 && arg3 == 0 && arg4" }, + { 'C', "Lock", "lockmgr reader blocked by writer", "nsec", + "lockstat:::lockmgr-block", "arg2 == 1 && arg3 == 1" }, + { 'C', "Lock", "lockmgr reader blocked by write wanted", "nsec", + "lockstat:::lockmgr-block", "arg2 == 1 && arg3 == 0 && arg4" }, { 'C', "Lock", "Unknown event (type 20)", "units" }, { 'C', "Lock", "Unknown event (type 21)", "units" }, { 'C', "Lock", "Unknown event (type 22)", "units" }, |