Date: Fri, 10 Aug 2018 06:42:09 +0000 (UTC) From: Matt Macy <mmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r337567 - in head: cddl/contrib/opensolaris/lib/libzfs/common cddl/contrib/opensolaris/lib/libzpool/common/sys sys/cddl/contrib/opensolaris/uts/common/fs/zfs sys/cddl/contrib/opensolari... Message-ID: <201808100642.w7A6g9Mq066690@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: mmacy Date: Fri Aug 10 06:42:08 2018 New Revision: 337567 URL: https://svnweb.freebsd.org/changeset/base/337567 Log: Performance optimization of AVL tree comparator functions MFV: commit ee36c709c3d5f7040e1bd11f5c75318aa03e789f Author: Gvozden Neskovic <neskovic@gmail.com> Date: Sat Aug 27 20:12:53 2016 +0200 perf: 2.75x faster ddt_entry_compare() First 256bits of ddt_key_t is a block checksum, which are expected to be close to random data. Hence, on average, comparison only needs to look at first few bytes of the keys. To reduce number of conditional jump instructions, the result is computed as: sign(memcmp(k1, k2)). Sign of an integer 'a' can be obtained as: `(0 < a) - (a < 0)` := {-1, 0, 1} , which is computed efficiently. Synthetic performance evaluation of original and new algorithm over 1G random keys on 2.6GHz Intel(R) Xeon(R) CPU E5-2660 v3: old 6.85789 s new 2.49089 s perf: 2.8x faster vdev_queue_offset_compare() and vdev_queue_timestamp_compare() Compute the result directly instead of using conditionals perf: zfs_range_compare() Speedup between 1.1x - 2.5x, depending on compiler version and optimization level. perf: spa_error_entry_compare() `bcmp()` is not suitable for comparator use. Use `memcmp()` instead. perf: 2.8x faster metaslab_compare() and metaslab_rangesize_compare() perf: 2.8x faster zil_bp_compare() perf: 2.8x faster mze_compare() perf: faster dbuf_compare() perf: faster compares in spa_misc perf: 2.8x faster layout_hash_compare() perf: 2.8x faster space_reftree_compare() perf: libzfs: faster avl tree comparators perf: guid_compare() perf: dsl_deadlist_compare() perf: perm_set_compare() perf: 2x faster range_tree_seg_compare() perf: faster unique_compare() perf: faster vdev_cache _compare() perf: faster vdev_uberblock_compare() perf: faster fuid _compare() perf: faster zfs_znode_hold_compare() Signed-off-by: Gvozden Neskovic <neskovic@gmail.com> Signed-off-by: Richard Elling <richard.elling@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #5033 Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_iter.c head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c head/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deadlist.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deleg.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/unique.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_fuid.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c head/sys/cddl/contrib/opensolaris/uts/common/sys/avl.h Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Fri Aug 10 06:42:08 2018 (r337567) @@ -787,15 +787,13 @@ typedef struct mnttab_node { static int libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) { - const mnttab_node_t *mtn1 = arg1; - const mnttab_node_t *mtn2 = arg2; + const mnttab_node_t *mtn1 = (const mnttab_node_t *)arg1; + const mnttab_node_t *mtn2 = (const mnttab_node_t *)arg2; int rv; rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); - if (rv == 0) - return (0); - return (rv > 0 ? 1 : -1); + return (AVL_ISIGN(rv)); } void Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_iter.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_iter.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_iter.c Fri Aug 10 06:42:08 2018 (r337567) @@ -272,12 +272,7 @@ zfs_snapshot_compare(const void *larg, const void *rar lcreate = zfs_prop_get_int(l, ZFS_PROP_CREATETXG); rcreate = zfs_prop_get_int(r, ZFS_PROP_CREATETXG); - if (lcreate < rcreate) - return (-1); - else if (lcreate > rcreate) - return (+1); - else - return (0); + return (AVL_CMP(lcreate, rcreate)); } int Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Fri Aug 10 06:42:08 2018 (r337567) @@ -489,15 +489,10 @@ typedef struct fsavl_node { static int fsavl_compare(const void *arg1, const void *arg2) { - const fsavl_node_t *fn1 = arg1; - const fsavl_node_t *fn2 = arg2; + const fsavl_node_t *fn1 = (const fsavl_node_t *)arg1; + const fsavl_node_t *fn2 = (const fsavl_node_t *)arg2; - if (fn1->fn_guid > fn2->fn_guid) - return (+1); - else if (fn1->fn_guid < fn2->fn_guid) - return (-1); - else - return (0); + return (AVL_CMP(fn1->fn_guid, fn2->fn_guid)); } /* Modified: head/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h Fri Aug 10 06:28:25 2018 (r337566) +++ head/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h Fri Aug 10 06:42:08 2018 (r337567) @@ -670,6 +670,9 @@ extern zoneid_t getzoneid(void); #define root_mount_wait() do { } while (0) #define root_mounted() (1) +#define noinline __attribute__((noinline)) +#define likely(x) __builtin_expect((x), 1) + struct file { void *dummy; }; Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c Fri Aug 10 06:42:08 2018 (r337567) @@ -1906,14 +1906,10 @@ typedef struct guid_map_entry { static int guid_compare(const void *arg1, const void *arg2) { - const guid_map_entry_t *gmep1 = arg1; - const guid_map_entry_t *gmep2 = arg2; + const guid_map_entry_t *gmep1 = (const guid_map_entry_t *)arg1; + const guid_map_entry_t *gmep2 = (const guid_map_entry_t *)arg2; - if (gmep1->guid < gmep2->guid) - return (-1); - else if (gmep1->guid > gmep2->guid) - return (1); - return (0); + return (AVL_CMP(gmep1->guid, gmep2->guid)); } static void Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Fri Aug 10 06:42:08 2018 (r337567) @@ -78,19 +78,13 @@ dbuf_compare(const void *x1, const void *x2) const dmu_buf_impl_t *d1 = x1; const dmu_buf_impl_t *d2 = x2; - if (d1->db_level < d2->db_level) { - return (-1); - } - if (d1->db_level > d2->db_level) { - return (1); - } + int cmp = AVL_CMP(d1->db_level, d2->db_level); + if (likely(cmp)) + return (cmp); - if (d1->db_blkid < d2->db_blkid) { - return (-1); - } - if (d1->db_blkid > d2->db_blkid) { - return (1); - } + cmp = AVL_CMP(d1->db_blkid, d2->db_blkid); + if (likely(cmp)) + return (cmp); if (d1->db_state == DB_SEARCH) { ASSERT3S(d2->db_state, !=, DB_SEARCH); @@ -100,13 +94,7 @@ dbuf_compare(const void *x1, const void *x2) return (1); } - if ((uintptr_t)d1 < (uintptr_t)d2) { - return (-1); - } - if ((uintptr_t)d1 > (uintptr_t)d2) { - return (1); - } - return (0); + return (AVL_PCMP(d1, d2)); } /* ARGSUSED */ Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deadlist.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deadlist.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deadlist.c Fri Aug 10 06:42:08 2018 (r337567) @@ -55,15 +55,10 @@ static int dsl_deadlist_compare(const void *arg1, const void *arg2) { - const dsl_deadlist_entry_t *dle1 = arg1; - const dsl_deadlist_entry_t *dle2 = arg2; + const dsl_deadlist_entry_t *dle1 = (const dsl_deadlist_entry_t *)arg1; + const dsl_deadlist_entry_t *dle2 = (const dsl_deadlist_entry_t *)arg2; - if (dle1->dle_mintxg < dle2->dle_mintxg) - return (-1); - else if (dle1->dle_mintxg > dle2->dle_mintxg) - return (+1); - else - return (0); + return (AVL_CMP(dle1->dle_mintxg, dle2->dle_mintxg)); } static void Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deleg.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deleg.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_deleg.c Fri Aug 10 06:42:08 2018 (r337567) @@ -384,14 +384,13 @@ typedef struct perm_set { static int perm_set_compare(const void *arg1, const void *arg2) { - const perm_set_t *node1 = arg1; - const perm_set_t *node2 = arg2; + const perm_set_t *node1 = (const perm_set_t *)arg1; + const perm_set_t *node2 = (const perm_set_t *)arg2; int val; val = strcmp(node1->p_setname, node2->p_setname); - if (val == 0) - return (0); - return (val > 0 ? 1 : -1); + + return (AVL_ISIGN(val)); } /* Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Fri Aug 10 06:42:08 2018 (r337567) @@ -541,8 +541,8 @@ metaslab_class_expandable_space(metaslab_class_t *mc) static int metaslab_compare(const void *x1, const void *x2) { - const metaslab_t *m1 = x1; - const metaslab_t *m2 = x2; + const metaslab_t *m1 = (const metaslab_t *)x1; + const metaslab_t *m2 = (const metaslab_t *)x2; int sort1 = 0; int sort2 = 0; @@ -568,22 +568,13 @@ metaslab_compare(const void *x1, const void *x2) if (sort1 > sort2) return (1); - if (m1->ms_weight < m2->ms_weight) - return (1); - if (m1->ms_weight > m2->ms_weight) - return (-1); + int cmp = AVL_CMP(m2->ms_weight, m1->ms_weight); + if (likely(cmp)) + return (cmp); - /* - * If the weights are identical, use the offset to force uniqueness. - */ - if (m1->ms_start < m2->ms_start) - return (-1); - if (m1->ms_start > m2->ms_start) - return (1); + IMPLY(AVL_CMP(m1->ms_start, m2->ms_start) == 0, m1 == m2); - ASSERT3P(m1, ==, m2); - - return (0); + return (AVL_CMP(m1->ms_start, m2->ms_start)); } /* @@ -1195,18 +1186,14 @@ metaslab_rangesize_compare(const void *x1, const void uint64_t rs_size1 = r1->rs_end - r1->rs_start; uint64_t rs_size2 = r2->rs_end - r2->rs_start; - if (rs_size1 < rs_size2) - return (-1); - if (rs_size1 > rs_size2) - return (1); + int cmp = AVL_CMP(rs_size1, rs_size2); + if (likely(cmp)) + return (cmp); if (r1->rs_start < r2->rs_start) return (-1); - if (r1->rs_start > r2->rs_start) - return (1); - - return (0); + return (AVL_CMP(r1->rs_start, r2->rs_start)); } /* Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Fri Aug 10 06:42:08 2018 (r337567) @@ -242,31 +242,23 @@ sa_cache_fini(void) static int layout_num_compare(const void *arg1, const void *arg2) { - const sa_lot_t *node1 = arg1; - const sa_lot_t *node2 = arg2; + const sa_lot_t *node1 = (const sa_lot_t *)arg1; + const sa_lot_t *node2 = (const sa_lot_t *)arg2; - if (node1->lot_num > node2->lot_num) - return (1); - else if (node1->lot_num < node2->lot_num) - return (-1); - return (0); + return (AVL_CMP(node1->lot_num, node2->lot_num)); } static int layout_hash_compare(const void *arg1, const void *arg2) { - const sa_lot_t *node1 = arg1; - const sa_lot_t *node2 = arg2; + const sa_lot_t *node1 = (const sa_lot_t *)arg1; + const sa_lot_t *node2 = (const sa_lot_t *)arg2; - if (node1->lot_hash > node2->lot_hash) - return (1); - if (node1->lot_hash < node2->lot_hash) - return (-1); - if (node1->lot_instance > node2->lot_instance) - return (1); - if (node1->lot_instance < node2->lot_instance) - return (-1); - return (0); + int cmp = AVL_CMP(node1->lot_hash, node2->lot_hash); + if (likely(cmp)) + return (cmp); + + return (AVL_CMP(node1->lot_instance, node2->lot_instance)); } boolean_t Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Fri Aug 10 06:42:08 2018 (r337567) @@ -905,19 +905,14 @@ spa_change_guid(spa_t *spa) static int spa_error_entry_compare(const void *a, const void *b) { - spa_error_entry_t *sa = (spa_error_entry_t *)a; - spa_error_entry_t *sb = (spa_error_entry_t *)b; + const spa_error_entry_t *sa = (const spa_error_entry_t *)a; + const spa_error_entry_t *sb = (const spa_error_entry_t *)b; int ret; - ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, + ret = memcmp(&sa->se_bookmark, &sb->se_bookmark, sizeof (zbookmark_phys_t)); - if (ret < 0) - return (-1); - else if (ret > 0) - return (1); - else - return (0); + return (AVL_ISIGN(ret)); } /* Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c Fri Aug 10 06:42:08 2018 (r337567) @@ -1016,18 +1016,13 @@ typedef struct spa_aux { int aux_count; } spa_aux_t; -static int +static inline int spa_aux_compare(const void *a, const void *b) { - const spa_aux_t *sa = a; - const spa_aux_t *sb = b; + const spa_aux_t *sa = (const spa_aux_t *)a; + const spa_aux_t *sb = (const spa_aux_t *)b; - if (sa->aux_guid < sb->aux_guid) - return (-1); - else if (sa->aux_guid > sb->aux_guid) - return (1); - else - return (0); + return (AVL_CMP(sa->aux_guid, sb->aux_guid)); } void @@ -2053,11 +2048,8 @@ spa_name_compare(const void *a1, const void *a2) int s; s = strcmp(s1->spa_name, s2->spa_name); - if (s > 0) - return (1); - if (s < 0) - return (-1); - return (0); + + return (AVL_ISIGN(s)); } int Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c Fri Aug 10 06:42:08 2018 (r337567) @@ -54,20 +54,14 @@ static int space_reftree_compare(const void *x1, const void *x2) { - const space_ref_t *sr1 = x1; - const space_ref_t *sr2 = x2; + const space_ref_t *sr1 = (const space_ref_t *)x1; + const space_ref_t *sr2 = (const space_ref_t *)x2; - if (sr1->sr_offset < sr2->sr_offset) - return (-1); - if (sr1->sr_offset > sr2->sr_offset) - return (1); + int cmp = AVL_CMP(sr1->sr_offset, sr2->sr_offset); + if (likely(cmp)) + return (cmp); - if (sr1 < sr2) - return (-1); - if (sr1 > sr2) - return (1); - - return (0); + return (AVL_PCMP(sr1, sr2)); } void Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h Fri Aug 10 06:42:08 2018 (r337567) @@ -146,4 +146,7 @@ extern struct mtx zfs_debug_mtx; #define sys_shutdown rebooting +#define noinline __attribute__((noinline)) +#define likely(x) __builtin_expect((x), 1) + #endif /* _SYS_ZFS_CONTEXT_H */ Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/unique.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/unique.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/unique.c Fri Aug 10 06:42:08 2018 (r337567) @@ -42,14 +42,10 @@ typedef struct unique { static int unique_compare(const void *a, const void *b) { - const unique_t *una = a; - const unique_t *unb = b; + const unique_t *una = (const unique_t *)a; + const unique_t *unb = (const unique_t *)b; - if (una->un_value < unb->un_value) - return (-1); - if (una->un_value > unb->un_value) - return (+1); - return (0); + return (AVL_CMP(una->un_value, unb->un_value)); } void Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c Fri Aug 10 06:42:08 2018 (r337567) @@ -1047,19 +1047,13 @@ retry: * among uberblocks with equal txg, choose the one with the latest timestamp. */ static int -vdev_uberblock_compare(uberblock_t *ub1, uberblock_t *ub2) +vdev_uberblock_compare(const uberblock_t *ub1, const uberblock_t *ub2) { - if (ub1->ub_txg < ub2->ub_txg) - return (-1); - if (ub1->ub_txg > ub2->ub_txg) - return (1); + int cmp = AVL_CMP(ub1->ub_txg, ub2->ub_txg); + if (likely(cmp)) + return (cmp); - if (ub1->ub_timestamp < ub2->ub_timestamp) - return (-1); - if (ub1->ub_timestamp > ub2->ub_timestamp) - return (1); - - return (0); + return (AVL_CMP(ub1->ub_timestamp, ub2->ub_timestamp)); } struct ubl_cbdata { Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c Fri Aug 10 06:42:08 2018 (r337567) @@ -311,20 +311,15 @@ sysctl_zfs_async_write_active_max_dirty_percent(SYSCTL int vdev_queue_offset_compare(const void *x1, const void *x2) { - const zio_t *z1 = x1; - const zio_t *z2 = x2; + const zio_t *z1 = (const zio_t *)x1; + const zio_t *z2 = (const zio_t *)x2; - if (z1->io_offset < z2->io_offset) - return (-1); - if (z1->io_offset > z2->io_offset) - return (1); + int cmp = AVL_CMP(z1->io_offset, z2->io_offset); - if (z1 < z2) - return (-1); - if (z1 > z2) - return (1); + if (likely(cmp)) + return (cmp); - return (0); + return (AVL_PCMP(z1, z2)); } static inline avl_tree_t * Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c Fri Aug 10 06:42:08 2018 (r337567) @@ -281,15 +281,11 @@ mze_compare(const void *arg1, const void *arg2) const mzap_ent_t *mze1 = arg1; const mzap_ent_t *mze2 = arg2; - if (mze1->mze_hash > mze2->mze_hash) - return (+1); - if (mze1->mze_hash < mze2->mze_hash) - return (-1); - if (mze1->mze_cd > mze2->mze_cd) - return (+1); - if (mze1->mze_cd < mze2->mze_cd) - return (-1); - return (0); + int cmp = AVL_CMP(mze1->mze_hash, mze2->mze_hash); + if (likely(cmp)) + return (cmp); + + return (AVL_CMP(mze1->mze_cd, mze2->mze_cd)); } static int Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_fuid.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_fuid.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_fuid.c Fri Aug 10 06:42:08 2018 (r337567) @@ -71,14 +71,10 @@ static char *nulldomain = ""; static int idx_compare(const void *arg1, const void *arg2) { - const fuid_domain_t *node1 = arg1; - const fuid_domain_t *node2 = arg2; + const fuid_domain_t *node1 = (const fuid_domain_t *)arg1; + const fuid_domain_t *node2 = (const fuid_domain_t *)arg2; - if (node1->f_idx < node2->f_idx) - return (-1); - else if (node1->f_idx > node2->f_idx) - return (1); - return (0); + return (AVL_CMP(node1->f_idx, node2->f_idx)); } /* @@ -87,14 +83,13 @@ idx_compare(const void *arg1, const void *arg2) static int domain_compare(const void *arg1, const void *arg2) { - const fuid_domain_t *node1 = arg1; - const fuid_domain_t *node2 = arg2; + const fuid_domain_t *node1 = (const fuid_domain_t *)arg1; + const fuid_domain_t *node2 = (const fuid_domain_t *)arg2; int val; val = strcmp(node1->f_ksid->kd_name, node2->f_ksid->kd_name); - if (val == 0) - return (0); - return (val > 0 ? 1 : -1); + + return (AVL_ISIGN(val)); } void Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c Fri Aug 10 06:42:08 2018 (r337567) @@ -594,12 +594,8 @@ zfs_range_reduce(rl_t *rl, uint64_t off, uint64_t len) int zfs_range_compare(const void *arg1, const void *arg2) { - const rl_t *rl1 = arg1; - const rl_t *rl2 = arg2; + const rl_t *rl1 = (const rl_t *)arg1; + const rl_t *rl2 = (const rl_t *)arg2; - if (rl1->r_off > rl2->r_off) - return (1); - if (rl1->r_off < rl2->r_off) - return (-1); - return (0); + return (AVL_CMP(rl1->r_off, rl2->r_off)); } Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c Fri Aug 10 06:42:08 2018 (r337567) @@ -131,17 +131,11 @@ zil_bp_compare(const void *x1, const void *x2) const dva_t *dva1 = &((zil_bp_node_t *)x1)->zn_dva; const dva_t *dva2 = &((zil_bp_node_t *)x2)->zn_dva; - if (DVA_GET_VDEV(dva1) < DVA_GET_VDEV(dva2)) - return (-1); - if (DVA_GET_VDEV(dva1) > DVA_GET_VDEV(dva2)) - return (1); + int cmp = AVL_CMP(DVA_GET_VDEV(dva1), DVA_GET_VDEV(dva2)); + if (likely(cmp)) + return (cmp); - if (DVA_GET_OFFSET(dva1) < DVA_GET_OFFSET(dva2)) - return (-1); - if (DVA_GET_OFFSET(dva1) > DVA_GET_OFFSET(dva2)) - return (1); - - return (0); + return (AVL_CMP(DVA_GET_OFFSET(dva1), DVA_GET_OFFSET(dva2))); } static void @@ -503,12 +497,7 @@ zil_lwb_vdev_compare(const void *x1, const void *x2) const uint64_t v1 = ((zil_vdev_node_t *)x1)->zv_vdev; const uint64_t v2 = ((zil_vdev_node_t *)x2)->zv_vdev; - if (v1 < v2) - return (-1); - if (v1 > v2) - return (1); - - return (0); + return (AVL_CMP(v1, v2)); } static lwb_t * @@ -1626,12 +1615,7 @@ zil_aitx_compare(const void *x1, const void *x2) const uint64_t o1 = ((itx_async_node_t *)x1)->ia_foid; const uint64_t o2 = ((itx_async_node_t *)x2)->ia_foid; - if (o1 < o2) - return (-1); - if (o1 > o2) - return (1); - - return (0); + return (AVL_CMP(o1, o2)); } /* Modified: head/sys/cddl/contrib/opensolaris/uts/common/sys/avl.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/sys/avl.h Fri Aug 10 06:28:25 2018 (r337566) +++ head/sys/cddl/contrib/opensolaris/uts/common/sys/avl.h Fri Aug 10 06:42:08 2018 (r337567) @@ -107,6 +107,14 @@ extern "C" { /* + * AVL comparator helpers + */ +#define AVL_ISIGN(a) (((a) > 0) - ((a) < 0)) +#define AVL_CMP(a, b) (((a) > (b)) - ((a) < (b))) +#define AVL_PCMP(a, b) \ + (((uintptr_t)(a) > (uintptr_t)(b)) - ((uintptr_t)(a) < (uintptr_t)(b))) + +/* * Type used for the root of the AVL tree. */ typedef struct avl_tree avl_tree_t;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201808100642.w7A6g9Mq066690>