diff options
| author | Mateusz Guzik <mjg@FreeBSD.org> | 2017-01-27 15:03:51 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2017-01-27 15:03:51 +0000 |
| commit | 290511163d64df58da9dbde07b130a6c4c96d981 (patch) | |
| tree | 596936626d12aa693826a144e583d06d9ef0c12a /sys/kern | |
| parent | 17071ff29803ec116b11d64f9ad367577eb45d8e (diff) | |
| download | src-290511163d64df58da9dbde07b130a6c4c96d981.tar.gz src-290511163d64df58da9dbde07b130a6c4c96d981.zip | |
Sprinkle __read_mostly on backoff and lock profiling code.
MFC after: 1 month
Notes
Notes:
svn path=/head/; revision=312890
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_lockstat.c | 3 | ||||
| -rw-r--r-- | sys/kern/kern_mutex.c | 4 | ||||
| -rw-r--r-- | sys/kern/kern_rwlock.c | 2 | ||||
| -rw-r--r-- | sys/kern/kern_sx.c | 2 | ||||
| -rw-r--r-- | sys/kern/subr_lock.c | 2 |
5 files changed, 7 insertions, 6 deletions
diff --git a/sys/kern/kern_lockstat.c b/sys/kern/kern_lockstat.c index c5a26a333055..10da98bbb0d6 100644 --- a/sys/kern/kern_lockstat.c +++ b/sys/kern/kern_lockstat.c @@ -27,6 +27,7 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> +#include <sys/systm.h> #include <sys/lock.h> #include <sys/lockstat.h> #include <sys/sdt.h> @@ -61,7 +62,7 @@ SDT_PROBE_DEFINE1(lockstat, , , sx__downgrade, "struct sx *"); SDT_PROBE_DEFINE2(lockstat, , , thread__spin, "struct mtx *", "uint64_t"); -int lockstat_enabled = 0; +int __read_mostly lockstat_enabled; uint64_t lockstat_nsecs(struct lock_object *lo) diff --git a/sys/kern/kern_mutex.c b/sys/kern/kern_mutex.c index 2ca178110efb..35bbd5f78c3f 100644 --- a/sys/kern/kern_mutex.c +++ b/sys/kern/kern_mutex.c @@ -140,7 +140,7 @@ struct lock_class lock_class_mtx_spin = { #ifdef ADAPTIVE_MUTEXES static SYSCTL_NODE(_debug, OID_AUTO, mtx, CTLFLAG_RD, NULL, "mtx debugging"); -static struct lock_delay_config mtx_delay = { +static struct lock_delay_config __read_mostly mtx_delay = { .initial = 1000, .step = 500, .min = 100, @@ -171,7 +171,7 @@ LOCK_DELAY_SYSINIT(mtx_delay_sysinit); static SYSCTL_NODE(_debug, OID_AUTO, mtx_spin, CTLFLAG_RD, NULL, "mtx spin debugging"); -static struct lock_delay_config mtx_spin_delay = { +static struct lock_delay_config __read_mostly mtx_spin_delay = { .initial = 1000, .step = 500, .min = 100, diff --git a/sys/kern/kern_rwlock.c b/sys/kern/kern_rwlock.c index a3c502a6c4d9..99df700c8836 100644 --- a/sys/kern/kern_rwlock.c +++ b/sys/kern/kern_rwlock.c @@ -100,7 +100,7 @@ static SYSCTL_NODE(_debug, OID_AUTO, rwlock, CTLFLAG_RD, NULL, SYSCTL_INT(_debug_rwlock, OID_AUTO, retry, CTLFLAG_RW, &rowner_retries, 0, ""); SYSCTL_INT(_debug_rwlock, OID_AUTO, loops, CTLFLAG_RW, &rowner_loops, 0, ""); -static struct lock_delay_config rw_delay = { +static struct lock_delay_config __read_mostly rw_delay = { .initial = 1000, .step = 500, .min = 100, diff --git a/sys/kern/kern_sx.c b/sys/kern/kern_sx.c index d89df3b5bcc8..64b758314d30 100644 --- a/sys/kern/kern_sx.c +++ b/sys/kern/kern_sx.c @@ -148,7 +148,7 @@ static SYSCTL_NODE(_debug, OID_AUTO, sx, CTLFLAG_RD, NULL, "sxlock debugging"); SYSCTL_UINT(_debug_sx, OID_AUTO, retries, CTLFLAG_RW, &asx_retries, 0, ""); SYSCTL_UINT(_debug_sx, OID_AUTO, loops, CTLFLAG_RW, &asx_loops, 0, ""); -static struct lock_delay_config sx_delay = { +static struct lock_delay_config __read_mostly sx_delay = { .initial = 1000, .step = 500, .min = 100, diff --git a/sys/kern/subr_lock.c b/sys/kern/subr_lock.c index bfe189d4363e..f83ba58f7aa4 100644 --- a/sys/kern/subr_lock.c +++ b/sys/kern/subr_lock.c @@ -213,7 +213,7 @@ struct lock_prof_cpu { struct lock_prof_cpu *lp_cpu[MAXCPU]; -volatile int lock_prof_enable = 0; +volatile int __read_mostly lock_prof_enable; static volatile int lock_prof_resetting; #define LPROF_SBUF_SIZE 256 |