Recent changes (master)

Jens Axboe
2019-02-22T13:00:05Z

The following changes since commit 71144e676e710b37966f447ccd8d944813dfa6d1:

configure: enable -Wimplicit-fallthrough if we have it (2019-02-11 13:30:52 -0700)

are available in the Git repository at:

git://git.kernel.dk/fio.git master

for you to fetch changes up to 3a294b8704a4125f12e3c3dec36667e68d821be0:

options: catch division by zero in setting CPU affinity (2019-02-21 10:55:32 -0700)

----------------------------------------------------------------
Vincent Fu (2):
stat: use long doubles to identify latency percentiles
options: catch division by zero in setting CPU affinity

options.c | 3 +++
stat.c | 5 ++++-
2 files changed, 7 insertions(+), 1 deletion(-)

---

Diff of recent changes:

diff --git a/options.c b/options.c
index 6d832354..95086074 100644
--- a/options.c
+++ b/options.c
@@ -493,6 +493,9 @@ int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
const long max_cpu = cpus_online();

cpus_in_mask = fio_cpu_count(mask);
+ if (!cpus_in_mask)
+ return 0;
+
cpu_index = cpu_index % cpus_in_mask;

index = 0;
diff --git a/stat.c b/stat.c
index c1f46e1d..66a13bca 100644
--- a/stat.c
+++ b/stat.c
@@ -170,7 +170,7 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
is_last = false;
for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
sum += io_u_plat[i];
- while (sum >= (plist[j].u.f / 100.0 * nr)) {
+ while (sum >= ((long double) plist[j].u.f / 100.0 * nr)) {
assert(plist[j].u.f <= 100.0);

ovals[j] = plat_idx_to_val(i);
@@ -187,6 +187,9 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
}
}

+ if (!is_last)
+ log_err("fio: error calculating latency percentiles\n");
+
*output = ovals;
return len;
}