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tests/rcutorture: better document locking of stats

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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>
This commit is contained in:
Alex Bennée 2020-02-25 12:46:54 +00:00
parent 804c96848b
commit ea70ccff65
1 changed files with 12 additions and 4 deletions
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16
tests/rcutorture.c
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@ -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];