From 6fc68ea5f38fb50ad22ae34777e0ab6111e3e749 Mon Sep 17 00:00:00 2001 From: James Simmons Date: Thu, 17 Nov 2016 14:35:50 -0500 Subject: [PATCH] staging: lustre: libcfs: remove == 0 testing Testing == 0 is not kernel style so remove this type of testing from libcfs. Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lnet/libcfs/debug.c | 8 +++--- drivers/staging/lustre/lnet/libcfs/hash.c | 27 +++++++++---------- .../staging/lustre/lnet/libcfs/libcfs_lock.c | 4 +-- .../lustre/lnet/libcfs/libcfs_string.c | 16 +++++------ .../lustre/lnet/libcfs/linux/linux-cpu.c | 12 ++++----- .../lustre/lnet/libcfs/linux/linux-crypto.c | 4 +-- .../staging/lustre/lnet/libcfs/tracefile.c | 14 +++++----- drivers/staging/lustre/lnet/libcfs/workitem.c | 2 +- 8 files changed, 43 insertions(+), 44 deletions(-) diff --git a/drivers/staging/lustre/lnet/libcfs/debug.c b/drivers/staging/lustre/lnet/libcfs/debug.c index 57cdc765d615..67f043e8d078 100644 --- a/drivers/staging/lustre/lnet/libcfs/debug.c +++ b/drivers/staging/lustre/lnet/libcfs/debug.c @@ -259,13 +259,13 @@ libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys) const char *token; int i; - if (mask == 0) { /* "0" */ + if (!mask) { /* "0" */ if (size > 0) str[0] = '0'; len = 1; } else { /* space-separated tokens */ for (i = 0; i < 32; i++) { - if ((mask & (1 << i)) == 0) + if (!(mask & (1 << i))) continue; token = fn(i); @@ -416,9 +416,9 @@ int libcfs_debug_init(unsigned long bufsize) max = max / num_possible_cpus(); max <<= (20 - PAGE_SHIFT); } - rc = cfs_tracefile_init(max); - if (rc == 0) { + rc = cfs_tracefile_init(max); + if (!rc) { libcfs_register_panic_notifier(); libcfs_debug_mb = cfs_trace_get_debug_mb(); } diff --git a/drivers/staging/lustre/lnet/libcfs/hash.c b/drivers/staging/lustre/lnet/libcfs/hash.c index 1b6753658a64..22e1e25a5ccc 100644 --- a/drivers/staging/lustre/lnet/libcfs/hash.c +++ b/drivers/staging/lustre/lnet/libcfs/hash.c @@ -507,7 +507,7 @@ cfs_hash_bd_dep_record(struct cfs_hash *hs, struct cfs_hash_bd *bd, int dep_cur) bd->bd_bucket->hsb_depmax = dep_cur; # if CFS_HASH_DEBUG_LEVEL >= CFS_HASH_DEBUG_1 - if (likely(warn_on_depth == 0 || + if (likely(!warn_on_depth || max(warn_on_depth, hs->hs_dep_max) >= dep_cur)) return; @@ -531,7 +531,7 @@ cfs_hash_bd_add_locked(struct cfs_hash *hs, struct cfs_hash_bd *bd, rc = hs->hs_hops->hop_hnode_add(hs, bd, hnode); cfs_hash_bd_dep_record(hs, bd, rc); bd->bd_bucket->hsb_version++; - if (unlikely(bd->bd_bucket->hsb_version == 0)) + if (unlikely(!bd->bd_bucket->hsb_version)) bd->bd_bucket->hsb_version++; bd->bd_bucket->hsb_count++; @@ -551,7 +551,7 @@ cfs_hash_bd_del_locked(struct cfs_hash *hs, struct cfs_hash_bd *bd, LASSERT(bd->bd_bucket->hsb_count > 0); bd->bd_bucket->hsb_count--; bd->bd_bucket->hsb_version++; - if (unlikely(bd->bd_bucket->hsb_version == 0)) + if (unlikely(!bd->bd_bucket->hsb_version)) bd->bd_bucket->hsb_version++; if (cfs_hash_with_counter(hs)) { @@ -571,7 +571,7 @@ cfs_hash_bd_move_locked(struct cfs_hash *hs, struct cfs_hash_bd *bd_old, struct cfs_hash_bucket *nbkt = bd_new->bd_bucket; int rc; - if (cfs_hash_bd_compare(bd_old, bd_new) == 0) + if (!cfs_hash_bd_compare(bd_old, bd_new)) return; /* use cfs_hash_bd_hnode_add/del, to avoid atomic & refcount ops @@ -584,11 +584,11 @@ cfs_hash_bd_move_locked(struct cfs_hash *hs, struct cfs_hash_bd *bd_old, LASSERT(obkt->hsb_count > 0); obkt->hsb_count--; obkt->hsb_version++; - if (unlikely(obkt->hsb_version == 0)) + if (unlikely(!obkt->hsb_version)) obkt->hsb_version++; nbkt->hsb_count++; nbkt->hsb_version++; - if (unlikely(nbkt->hsb_version == 0)) + if (unlikely(!nbkt->hsb_version)) nbkt->hsb_version++; } @@ -883,7 +883,7 @@ cfs_hash_buckets_realloc(struct cfs_hash *hs, struct cfs_hash_bucket **old_bkts, struct cfs_hash_bucket **new_bkts; int i; - LASSERT(old_size == 0 || old_bkts); + LASSERT(!old_size || old_bkts); if (old_bkts && old_size == new_size) return old_bkts; @@ -1016,12 +1016,11 @@ cfs_hash_create(char *name, unsigned int cur_bits, unsigned int max_bits, LASSERT(cur_bits > 0); LASSERT(cur_bits >= bkt_bits); LASSERT(max_bits >= cur_bits && max_bits < 31); - LASSERT(ergo((flags & CFS_HASH_REHASH) == 0, cur_bits == max_bits)); - LASSERT(ergo(flags & CFS_HASH_REHASH, - (flags & CFS_HASH_NO_LOCK) == 0)); + LASSERT(ergo(!(flags & CFS_HASH_REHASH), cur_bits == max_bits)); + LASSERT(ergo(flags & CFS_HASH_REHASH, !(flags & CFS_HASH_NO_LOCK))); LASSERT(ergo(flags & CFS_HASH_REHASH_KEY, ops->hs_keycpy)); - len = (flags & CFS_HASH_BIGNAME) == 0 ? + len = !(flags & CFS_HASH_BIGNAME) ? CFS_HASH_NAME_LEN : CFS_HASH_BIGNAME_LEN; LIBCFS_ALLOC(hs, offsetof(struct cfs_hash, hs_name[len])); if (!hs) @@ -1107,12 +1106,12 @@ cfs_hash_destroy(struct cfs_hash *hs) cfs_hash_exit(hs, hnode); } } - LASSERT(bd.bd_bucket->hsb_count == 0); + LASSERT(!bd.bd_bucket->hsb_count); cfs_hash_bd_unlock(hs, &bd, 1); cond_resched(); } - LASSERT(atomic_read(&hs->hs_count) == 0); + LASSERT(!atomic_read(&hs->hs_count)); cfs_hash_buckets_free(hs->hs_buckets, cfs_hash_bkt_size(hs), 0, CFS_HASH_NBKT(hs)); @@ -1388,7 +1387,7 @@ cfs_hash_for_each_exit(struct cfs_hash *hs) bits = cfs_hash_rehash_bits(hs); cfs_hash_unlock(hs, 1); /* NB: it's race on cfs_has_t::hs_iterating, see above */ - if (remained == 0) + if (!remained) hs->hs_iterating = 0; if (bits > 0) { cfs_hash_rehash(hs, atomic_read(&hs->hs_count) < diff --git a/drivers/staging/lustre/lnet/libcfs/libcfs_lock.c b/drivers/staging/lustre/lnet/libcfs/libcfs_lock.c index 1deea765758f..66f020b5a7c5 100644 --- a/drivers/staging/lustre/lnet/libcfs/libcfs_lock.c +++ b/drivers/staging/lustre/lnet/libcfs/libcfs_lock.c @@ -114,7 +114,7 @@ cfs_percpt_lock(struct cfs_percpt_lock *pcl, int index) /* exclusive lock request */ for (i = 0; i < ncpt; i++) { spin_lock(pcl->pcl_locks[i]); - if (i == 0) { + if (!i) { LASSERT(!pcl->pcl_locked); /* nobody should take private lock after this * so I wouldn't starve for too long time @@ -141,7 +141,7 @@ cfs_percpt_unlock(struct cfs_percpt_lock *pcl, int index) } for (i = ncpt - 1; i >= 0; i--) { - if (i == 0) { + if (!i) { LASSERT(pcl->pcl_locked); pcl->pcl_locked = 0; } diff --git a/drivers/staging/lustre/lnet/libcfs/libcfs_string.c b/drivers/staging/lustre/lnet/libcfs/libcfs_string.c index 9c58f8268a12..6f6f2406163d 100644 --- a/drivers/staging/lustre/lnet/libcfs/libcfs_string.c +++ b/drivers/staging/lustre/lnet/libcfs/libcfs_string.c @@ -79,7 +79,7 @@ int cfs_str2mask(const char *str, const char *(*bit2str)(int bit), for (i = 0; i < 32; i++) { debugstr = bit2str(i); if (debugstr && strlen(debugstr) == len && - strncasecmp(str, debugstr, len) == 0) { + !strncasecmp(str, debugstr, len)) { if (op == '-') newmask &= ~(1 << i); else @@ -89,7 +89,7 @@ int cfs_str2mask(const char *str, const char *(*bit2str)(int bit), } } if (!found && len == 3 && - (strncasecmp(str, "ALL", len) == 0)) { + !strncasecmp(str, "ALL", len)) { if (op == '-') newmask = minmask; else @@ -182,7 +182,7 @@ cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res) next->ls_len--; } - if (next->ls_len == 0) /* whitespaces only */ + if (!next->ls_len) /* whitespaces only */ return 0; if (*next->ls_str == delim) { @@ -417,7 +417,7 @@ cfs_expr_list_match(__u32 value, struct cfs_expr_list *expr_list) list_for_each_entry(expr, &expr_list->el_exprs, re_link) { if (value >= expr->re_lo && value <= expr->re_hi && - ((value - expr->re_lo) % expr->re_stride) == 0) + !((value - expr->re_lo) % expr->re_stride)) return 1; } @@ -442,12 +442,12 @@ cfs_expr_list_values(struct cfs_expr_list *expr_list, int max, __u32 **valpp) list_for_each_entry(expr, &expr_list->el_exprs, re_link) { for (i = expr->re_lo; i <= expr->re_hi; i++) { - if (((i - expr->re_lo) % expr->re_stride) == 0) + if (!((i - expr->re_lo) % expr->re_stride)) count++; } } - if (count == 0) /* empty expression list */ + if (!count) /* empty expression list */ return 0; if (count > max) { @@ -463,7 +463,7 @@ cfs_expr_list_values(struct cfs_expr_list *expr_list, int max, __u32 **valpp) count = 0; list_for_each_entry(expr, &expr_list->el_exprs, re_link) { for (i = expr->re_lo; i <= expr->re_hi; i++) { - if (((i - expr->re_lo) % expr->re_stride) == 0) + if (!((i - expr->re_lo) % expr->re_stride)) val[count++] = i; } } @@ -540,7 +540,7 @@ cfs_expr_list_parse(char *str, int len, unsigned int min, unsigned int max, } } else { rc = cfs_range_expr_parse(&src, min, max, 0, &expr); - if (rc == 0) + if (!rc) list_add_tail(&expr->re_link, &expr_list->el_exprs); } diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c index 44a8790529ef..8c3fcdb51a68 100644 --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c @@ -375,7 +375,7 @@ cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask) { int i; - if (cpumask_weight(mask) == 0 || + if (!cpumask_weight(mask) || cpumask_any_and(mask, cpu_online_mask) >= nr_cpu_ids) { CDEBUG(D_INFO, "No online CPU is found in the CPU mask for CPU partition %d\n", cpt); @@ -516,7 +516,7 @@ cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt) rotor %= weight; for_each_node_mask(node, *mask) { - if (rotor-- == 0) + if (!rotor--) return node; } @@ -584,7 +584,7 @@ cfs_cpt_bind(struct cfs_cpt_table *cptab, int cpt) rc = set_cpus_allowed_ptr(current, cpumask); set_mems_allowed(*nodemask); - if (rc == 0) + if (!rc) schedule(); /* switch to allowed CPU */ return rc; @@ -658,7 +658,7 @@ cfs_cpt_choose_ncpus(struct cfs_cpt_table *cptab, int cpt, goto out; } - if (--number == 0) + if (!--number) goto out; } cpu = cpumask_first(socket); @@ -750,7 +750,7 @@ cfs_cpt_table_create(int ncpt) } num = num_online_cpus() / ncpt; - if (num == 0) { + if (!num) { CERROR("CPU changed while setting CPU partition\n"); goto failed; } @@ -848,7 +848,7 @@ cfs_cpt_table_create_pattern(char *pattern) } } - if (ncpt == 0 || + if (!ncpt || (node && ncpt > num_online_nodes()) || (!node && ncpt > num_online_cpus())) { CERROR("Invalid pattern %s, or too many partitions %d\n", diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c index 3d85cc5f709a..ac2e05525198 100644 --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c @@ -152,7 +152,7 @@ int cfs_crypto_hash_digest(enum cfs_crypto_hash_alg hash_alg, int err; const struct cfs_crypto_hash_type *type; - if (!buf || buf_len == 0 || !hash_len) + if (!buf || !buf_len || !hash_len) return -EINVAL; err = cfs_crypto_hash_alloc(hash_alg, &type, &req, key, key_len); @@ -440,6 +440,6 @@ int cfs_crypto_register(void) */ void cfs_crypto_unregister(void) { - if (adler32 == 0) + if (!adler32) cfs_crypto_adler32_unregister(); } diff --git a/drivers/staging/lustre/lnet/libcfs/tracefile.c b/drivers/staging/lustre/lnet/libcfs/tracefile.c index 9f5eeb36987c..a15cedd4c81d 100644 --- a/drivers/staging/lustre/lnet/libcfs/tracefile.c +++ b/drivers/staging/lustre/lnet/libcfs/tracefile.c @@ -236,7 +236,7 @@ static void cfs_tcd_shrink(struct cfs_trace_cpu_data *tcd) INIT_LIST_HEAD(&pc.pc_pages); list_for_each_entry_safe(tage, tmp, &tcd->tcd_pages, linkage) { - if (pgcount-- == 0) + if (!pgcount--) break; list_move_tail(&tage->linkage, &pc.pc_pages); @@ -320,7 +320,7 @@ int libcfs_debug_vmsg2(struct libcfs_debug_msg_data *msgdata, if (!tcd) /* arch may not log in IRQ context */ goto console; - if (tcd->tcd_cur_pages == 0) + if (!tcd->tcd_cur_pages) header.ph_flags |= PH_FLAG_FIRST_RECORD; if (tcd->tcd_shutting_down) { @@ -423,7 +423,7 @@ int libcfs_debug_vmsg2(struct libcfs_debug_msg_data *msgdata, __LASSERT(tage->used <= PAGE_SIZE); console: - if ((mask & libcfs_printk) == 0) { + if (!(mask & libcfs_printk)) { /* no console output requested */ if (tcd) cfs_trace_put_tcd(tcd); @@ -871,13 +871,13 @@ int cfs_trace_daemon_command(char *str) cfs_tracefile_write_lock(); - if (strcmp(str, "stop") == 0) { + if (!strcmp(str, "stop")) { cfs_tracefile_write_unlock(); cfs_trace_stop_thread(); cfs_tracefile_write_lock(); memset(cfs_tracefile, 0, sizeof(cfs_tracefile)); - } else if (strncmp(str, "size=", 5) == 0) { + } else if (!strncmp(str, "size=", 5)) { unsigned long tmp; rc = kstrtoul(str + 5, 10, &tmp); @@ -917,7 +917,7 @@ int cfs_trace_daemon_command_usrstr(void __user *usr_str, int usr_str_nob) rc = cfs_trace_copyin_string(str, usr_str_nob + 1, usr_str, usr_str_nob); - if (rc == 0) + if (!rc) rc = cfs_trace_daemon_command(str); kfree(str); @@ -1072,7 +1072,7 @@ static int tracefiled(void *arg) __LASSERT(list_empty(&pc.pc_pages)); end_loop: if (atomic_read(&tctl->tctl_shutdown)) { - if (last_loop == 0) { + if (!last_loop) { last_loop = 1; continue; } else { diff --git a/drivers/staging/lustre/lnet/libcfs/workitem.c b/drivers/staging/lustre/lnet/libcfs/workitem.c index b9eda179091f..f5f1e9e7b5e3 100644 --- a/drivers/staging/lustre/lnet/libcfs/workitem.c +++ b/drivers/staging/lustre/lnet/libcfs/workitem.c @@ -325,7 +325,7 @@ cfs_wi_sched_destroy(struct cfs_wi_sched *sched) list_del(&sched->ws_list); spin_unlock(&cfs_wi_data.wi_glock); - LASSERT(sched->ws_nscheduled == 0); + LASSERT(!sched->ws_nscheduled); LIBCFS_FREE(sched, sizeof(*sched)); } -- 2.39.2