112 lines
4.0 KiB
Diff
112 lines
4.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Benjamin Marzinski <bmarzins@redhat.com>
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Date: Thu, 14 Jan 2021 20:20:25 -0600
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Subject: [PATCH] multipathd: use get_monotonic_time() in io_err_stat code
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Instead of calling clock_gettime(), and dealing with failure
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conditions, just call get_monotonic_time().
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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Reviewed-by: Martin Wilck <mwilck@suse.com>
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---
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libmultipath/io_err_stat.c | 34 +++++++++++-----------------------
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1 file changed, 11 insertions(+), 23 deletions(-)
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diff --git a/libmultipath/io_err_stat.c b/libmultipath/io_err_stat.c
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index 63ee2e07..3389d693 100644
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--- a/libmultipath/io_err_stat.c
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+++ b/libmultipath/io_err_stat.c
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@@ -305,8 +305,7 @@ int io_err_stat_handle_pathfail(struct path *path)
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* the repeated count threshold and time frame, we assume a path
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* which fails at least twice within 60 seconds is flaky.
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*/
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- if (clock_gettime(CLOCK_MONOTONIC, &curr_time) != 0)
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- return 1;
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+ get_monotonic_time(&curr_time);
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if (path->io_err_pathfail_cnt == 0) {
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path->io_err_pathfail_cnt++;
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path->io_err_pathfail_starttime = curr_time.tv_sec;
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@@ -362,9 +361,9 @@ int need_io_err_check(struct path *pp)
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}
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if (pp->io_err_pathfail_cnt != PATH_IO_ERR_WAITING_TO_CHECK)
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return 1;
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- if (clock_gettime(CLOCK_MONOTONIC, &curr_time) != 0 ||
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- (curr_time.tv_sec - pp->io_err_dis_reinstate_time) >
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- pp->mpp->marginal_path_err_recheck_gap_time) {
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+ get_monotonic_time(&curr_time);
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+ if ((curr_time.tv_sec - pp->io_err_dis_reinstate_time) >
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+ pp->mpp->marginal_path_err_recheck_gap_time) {
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io_err_stat_log(4, "%s: reschedule checking after %d seconds",
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pp->dev,
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pp->mpp->marginal_path_err_recheck_gap_time);
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@@ -410,8 +409,7 @@ static int io_err_stat_time_up(struct io_err_stat_path *pp)
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{
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struct timespec currtime, difftime;
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- if (clock_gettime(CLOCK_MONOTONIC, &currtime) != 0)
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- return 0;
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+ get_monotonic_time(&currtime);
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timespecsub(&currtime, &pp->start_time, &difftime);
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if (difftime.tv_sec < pp->total_time)
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return 0;
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@@ -424,8 +422,7 @@ static void end_io_err_stat(struct io_err_stat_path *pp)
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struct path *path;
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double err_rate;
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- if (clock_gettime(CLOCK_MONOTONIC, &currtime) != 0)
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- currtime = pp->start_time;
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+ get_monotonic_time(&currtime);
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io_err_stat_log(4, "%s: check end", pp->devname);
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@@ -474,11 +471,7 @@ static int send_each_async_io(struct dio_ctx *ct, int fd, char *dev)
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ct->io_starttime.tv_sec == 0) {
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struct iocb *ios[1] = { &ct->io };
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- if (clock_gettime(CLOCK_MONOTONIC, &ct->io_starttime) != 0) {
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- ct->io_starttime.tv_sec = 0;
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- ct->io_starttime.tv_nsec = 0;
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- return rc;
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- }
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+ get_monotonic_time(&ct->io_starttime);
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io_prep_pread(&ct->io, fd, ct->buf, ct->blksize, 0);
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if (io_submit(ioctx, 1, ios) != 1) {
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io_err_stat_log(5, "%s: io_submit error %i",
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@@ -497,8 +490,7 @@ static void send_batch_async_ios(struct io_err_stat_path *pp)
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struct dio_ctx *ct;
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struct timespec currtime, difftime;
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- if (clock_gettime(CLOCK_MONOTONIC, &currtime) != 0)
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- return;
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+ get_monotonic_time(&currtime);
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/*
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* Give a free time for all IO to complete or timeout
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*/
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@@ -513,11 +505,8 @@ static void send_batch_async_ios(struct io_err_stat_path *pp)
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if (!send_each_async_io(ct, pp->fd, pp->devname))
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pp->io_nr++;
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}
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- if (pp->start_time.tv_sec == 0 && pp->start_time.tv_nsec == 0 &&
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- clock_gettime(CLOCK_MONOTONIC, &pp->start_time)) {
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- pp->start_time.tv_sec = 0;
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- pp->start_time.tv_nsec = 0;
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- }
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+ if (pp->start_time.tv_sec == 0 && pp->start_time.tv_nsec == 0)
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+ get_monotonic_time(&pp->start_time);
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}
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static int try_to_cancel_timeout_io(struct dio_ctx *ct, struct timespec *t,
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@@ -556,8 +545,7 @@ static void poll_async_io_timeout(void)
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int rc = PATH_UNCHECKED;
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int i, j;
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- if (clock_gettime(CLOCK_MONOTONIC, &curr_time) != 0)
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- return;
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+ get_monotonic_time(&curr_time);
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vector_foreach_slot(io_err_pathvec, pp, i) {
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for (j = 0; j < CONCUR_NR_EVENT; j++) {
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rc = try_to_cancel_timeout_io(pp->dio_ctx_array + j,
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--
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2.17.2
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