This patch enables monitoring coverage counters through event API. Signed-off-by: Gowrishankar Muthukrishnan <gmuth...@redhat.com> --- lib/coverage.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/coverage.h | 4 ++++ lib/timeval.c | 3 +++ 3 files changed, 68 insertions(+)
diff --git a/lib/coverage.c b/lib/coverage.c index a95b6aa..f4c872e 100644 --- a/lib/coverage.c +++ b/lib/coverage.c @@ -25,6 +25,7 @@ #include "unixctl.h" #include "util.h" #include "openvswitch/vlog.h" +#include "event.h" VLOG_DEFINE_THIS_MODULE(coverage); @@ -36,6 +37,7 @@ static size_t allocated_coverage_counters = 0; static struct ovs_mutex coverage_mutex = OVS_MUTEX_INITIALIZER; DEFINE_STATIC_PER_THREAD_DATA(long long int, coverage_clear_time, LLONG_MIN); +DEFINE_STATIC_PER_THREAD_DATA(long long int, coverage_event_time, LLONG_MIN); static long long int coverage_run_time = LLONG_MIN; /* Index counter used to compute the moving average array's index. */ @@ -51,6 +53,7 @@ static bool coverage_read_counter(const char *name, void coverage_counter_register(struct coverage_counter* counter) { + event_register(counter->name, EV_RESOURCE_COVERAGE); if (n_coverage_counters >= allocated_coverage_counters) { coverage_counters = x2nrealloc(coverage_counters, &allocated_coverage_counters, @@ -414,3 +417,61 @@ coverage_read_counter(const char *name, unsigned long long int *count) return false; } + +static void +coverage_event__(bool trylock) +{ + long long int now, *thread_time; + + now = time_msec(); + thread_time = coverage_event_time_get(); + + /* Initialize the coverage_event_time. */ + if (*thread_time == LLONG_MIN) { + *thread_time = now + COVERAGE_EVENT_INTERVAL; + } + + if (now >= *thread_time) { + size_t i; + + if (trylock) { + /* Returns if cannot acquire lock. */ + if (event_try_lock()) { + return; + } + if (ovs_mutex_trylock(&coverage_mutex)) { + event_unlock(); + return; + } + } else { + event_lock(); + ovs_mutex_lock(&coverage_mutex); + } + + for (i = 0; i < n_coverage_counters && event_count(); i++) { + struct coverage_counter *c = coverage_counters[i]; + struct event *ev; + + ev = event_get(c->name); + if (!ev || ev->def.resource != EV_RESOURCE_COVERAGE) { + continue; + } + + ev->current = c->total; + ovs_mutex_unlock(&coverage_mutex); + ev->rate_min = coverage_array_sum(c->min, MIN_AVG_LEN) / 60.0; + ev->rate_hour = coverage_array_sum(c->hr, HR_AVG_LEN) / 3600.0; + ovs_mutex_lock(&coverage_mutex); + } + + ovs_mutex_unlock(&coverage_mutex); + event_unlock(); + *thread_time = now + COVERAGE_EVENT_INTERVAL; + } +} + +void +coverage_try_event(void) +{ + coverage_event__(true); +} diff --git a/lib/coverage.h b/lib/coverage.h index dea990e..4cdf956 100644 --- a/lib/coverage.h +++ b/lib/coverage.h @@ -39,6 +39,9 @@ BUILD_ASSERT_DECL(60000 % COVERAGE_RUN_INTERVAL == 0); #define COVERAGE_CLEAR_INTERVAL 1000 BUILD_ASSERT_DECL(COVERAGE_RUN_INTERVAL % COVERAGE_CLEAR_INTERVAL == 0); +#define COVERAGE_EVENT_INTERVAL 1000 +BUILD_ASSERT_DECL(60000 % COVERAGE_EVENT_INTERVAL == 0); + /* Defines the moving average array length. */ #define MIN_AVG_LEN (60000/COVERAGE_RUN_INTERVAL) #define HR_AVG_LEN 60 @@ -90,5 +93,6 @@ void coverage_log(void); void coverage_clear(void); void coverage_try_clear(void); void coverage_run(void); +void coverage_try_event(void); #endif /* coverage.h */ diff --git a/lib/timeval.c b/lib/timeval.c index 193c7ba..3e3d86f 100644 --- a/lib/timeval.c +++ b/lib/timeval.c @@ -35,6 +35,7 @@ #include "ovs-thread.h" #include "signals.h" #include "seq.h" +#include "stopwatch.h" #include "unixctl.h" #include "util.h" #include "openvswitch/vlog.h" @@ -294,6 +295,8 @@ time_poll(struct pollfd *pollfds, int n_pollfds, HANDLE *handles OVS_UNUSED, time_init(); coverage_clear(); coverage_run(); + coverage_try_event(); + if (*last_wakeup && !thread_is_pmd()) { log_poll_interval(*last_wakeup); } -- 1.8.3.1 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev