From bb230c124730f21eea13deab433f9f8fc96bd5f3 Mon Sep 17 00:00:00 2001 From: Bill O'Donnell Date: Mon, 12 Oct 2015 05:15:45 +1100 Subject: xfs: create global stats and stats_clear in sysfs Currently, xfs global stats are in procfs. This patch introduces (replicates) the global stats in sysfs. Additionally a stats_clear file is introduced in sysfs. Signed-off-by: Bill O'Donnell Reviewed-by: Eric Sandeen Signed-off-by: Dave Chinner --- fs/xfs/xfs_stats.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) (limited to 'fs/xfs/xfs_stats.c') diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c index f2240383d4bb..e19b84a327d1 100644 --- a/fs/xfs/xfs_stats.c +++ b/fs/xfs/xfs_stats.c @@ -29,6 +29,88 @@ static int counter_val(int idx) return val; } +int xfs_stats_format(char *buf) +{ + int i, j; + int len = 0; + __uint64_t xs_xstrat_bytes = 0; + __uint64_t xs_write_bytes = 0; + __uint64_t xs_read_bytes = 0; + + static const struct xstats_entry { + char *desc; + int endpoint; + } xstats[] = { + { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, + { "abt", XFSSTAT_END_ALLOC_BTREE }, + { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, + { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, + { "dir", XFSSTAT_END_DIRECTORY_OPS }, + { "trans", XFSSTAT_END_TRANSACTIONS }, + { "ig", XFSSTAT_END_INODE_OPS }, + { "log", XFSSTAT_END_LOG_OPS }, + { "push_ail", XFSSTAT_END_TAIL_PUSHING }, + { "xstrat", XFSSTAT_END_WRITE_CONVERT }, + { "rw", XFSSTAT_END_READ_WRITE_OPS }, + { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, + { "icluster", XFSSTAT_END_INODE_CLUSTER }, + { "vnodes", XFSSTAT_END_VNODE_OPS }, + { "buf", XFSSTAT_END_BUF }, + { "abtb2", XFSSTAT_END_ABTB_V2 }, + { "abtc2", XFSSTAT_END_ABTC_V2 }, + { "bmbt2", XFSSTAT_END_BMBT_V2 }, + { "ibt2", XFSSTAT_END_IBT_V2 }, + { "fibt2", XFSSTAT_END_FIBT_V2 }, + /* we print both series of quota information together */ + { "qm", XFSSTAT_END_QM }, + }; + + /* Loop over all stats groups */ + + for (i = j = 0; i < ARRAY_SIZE(xstats); i++) { + len += snprintf(buf + len, PATH_MAX - len, "%s", + xstats[i].desc); + /* inner loop does each group */ + for (; j < xstats[i].endpoint; j++) + len += snprintf(buf + len, PATH_MAX - len, " %u", + counter_val(j)); + len += snprintf(buf + len, PATH_MAX - len, "\n"); + } + /* extra precision counters */ + for_each_possible_cpu(i) { + xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; + xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; + xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; + } + + len += snprintf(buf + len, PATH_MAX-len, "xpc %Lu %Lu %Lu\n", + xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); + len += snprintf(buf + len, PATH_MAX-len, "debug %u\n", +#if defined(DEBUG) + 1); +#else + 0); +#endif + + return len; +} + +void xfs_stats_clearall(void) +{ + int c; + __uint32_t vn_active; + + xfs_notice(NULL, "Clearing xfsstats"); + for_each_possible_cpu(c) { + preempt_disable(); + /* save vn_active, it's a universal truth! */ + vn_active = per_cpu(xfsstats, c).vn_active; + memset(&per_cpu(xfsstats, c), 0, sizeof(struct xfsstats)); + per_cpu(xfsstats, c).vn_active = vn_active; + preempt_enable(); + } +} + static int xfs_stat_proc_show(struct seq_file *m, void *v) { int i, j; -- cgit v1.2.3