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Alike to ZoL disable metaslab allocation tracing code.

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It is too generous to collect in production debug traces that can only
be read with kernel debugger.  Illumos includes special code in their
mdb debugger to read it, we don't.

MFC after:	1 week
Sponsored by:	iXsystems, Inc.
This commit is contained in:
Alexander Motin 2019-06-14 19:57:32 +00:00
parent 284e53a401
commit b3b3aa2e29
1 changed files with 33 additions and 1 deletions
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34
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c
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@ -259,7 +259,9 @@ int zfs_metaslab_switch_threshold = 2;
* Internal switch to enable/disable the metaslab allocation tracing
* facility.
*/
#ifdef _METASLAB_TRACING
boolean_t metaslab_trace_enabled = B_TRUE;
#endif
/*
* Maximum entries that the metaslab allocation tracing facility will keep
@ -269,7 +271,9 @@ boolean_t metaslab_trace_enabled = B_TRUE;
* to every exceed this value. In debug mode, the system will panic if this
* limit is ever reached allowing for further investigation.
*/
#ifdef _METASLAB_TRACING
uint64_t metaslab_trace_max_entries = 5000;
#endif
static uint64_t metaslab_weight(metaslab_t *);
static void metaslab_set_fragmentation(metaslab_t *);
@ -277,8 +281,9 @@ static void metaslab_free_impl(vdev_t *, uint64_t, uint64_t, boolean_t);
static void metaslab_check_free_impl(vdev_t *, uint64_t, uint64_t);
static void metaslab_passivate(metaslab_t *msp, uint64_t weight);
static uint64_t metaslab_weight_from_range_tree(metaslab_t *msp);
#ifdef _METASLAB_TRACING
kmem_cache_t *metaslab_alloc_trace_cache;
#endif
/*
* ==========================================================================
@ -2797,6 +2802,7 @@ metaslab_distance(metaslab_t *msp, dva_t *dva)
* Metaslab allocation tracing facility
* ==========================================================================
*/
#ifdef _METASLAB_TRACING
kstat_t *metaslab_trace_ksp;
kstat_named_t metaslab_trace_over_limit;
@ -2901,6 +2907,32 @@ metaslab_trace_fini(zio_alloc_list_t *zal)
zal->zal_size = 0;
}
#else
#define metaslab_trace_add(zal, mg, msp, psize, id, off, alloc)
void
metaslab_alloc_trace_init(void)
{
}
void
metaslab_alloc_trace_fini(void)
{
}
void
metaslab_trace_init(zio_alloc_list_t *zal)
{
}
void
metaslab_trace_fini(zio_alloc_list_t *zal)
{
}
#endif /* _METASLAB_TRACING */
/*
* ==========================================================================
* Metaslab block operations