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| author | Alex Bennée <alex.bennee@linaro.org> | 2020-02-25 12:46:54 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2020-02-25 17:42:59 +0000 |
| commit | ea70ccff651d10625cb051521d7ac029874008c3 (patch) | |
| tree | 97a5be9fdc2ab1d6735e702a190fda865db4df23 /tests/rcutorture.c | |
| parent | 804c96848b18458e05d64a5fdda8ced29c2470a9 (diff) | |
| download | qemu-ea70ccff651d10625cb051521d7ac029874008c3.zip | |
tests/rcutorture: better document locking of stats
This is pure code motion with no functional effect.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200225124710.14152-4-alex.bennee@linaro.org>
Diffstat (limited to 'tests/rcutorture.c')
| -rw-r--r-- | tests/rcutorture.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/tests/rcutorture.c b/tests/rcutorture.c index e8b2169e7d..256d24ed5b 100644 --- a/tests/rcutorture.c +++ b/tests/rcutorture.c @@ -65,8 +65,6 @@ #include "qemu/rcu.h" #include "qemu/thread.h" -long long n_reads = 0LL; -long n_updates = 0L; int nthreadsrunning; #define GOFLAG_INIT 0 @@ -78,11 +76,20 @@ static volatile int goflag = GOFLAG_INIT; #define RCU_READ_RUN 1000 #define NR_THREADS 100 -static QemuMutex counts_mutex; static QemuThread threads[NR_THREADS]; static struct rcu_reader_data *data[NR_THREADS]; static int n_threads; +/* + * Statistical counts + * + * These are the sum of local counters at the end of a run. + * Updates are protected by a mutex. + */ +static QemuMutex counts_mutex; +long long n_reads = 0LL; +long n_updates = 0L; + static void create_thread(void *(*func)(void *)) { if (n_threads >= NR_THREADS) { @@ -230,8 +237,9 @@ struct rcu_stress { struct rcu_stress rcu_stress_array[RCU_STRESS_PIPE_LEN] = { { 0 } }; struct rcu_stress *rcu_stress_current; int rcu_stress_idx; - int n_mberror; + +/* Updates protected by counts_mutex */ long long rcu_stress_count[RCU_STRESS_PIPE_LEN + 1]; |