Update warnings in kmem debug code
This fix was long overdue. Most of the ground work was laid long ago to include the exact function and line number in the error message which there was an issue with a memory allocation call. However, probably due to lack of time at the moment that informatin never made it in to the error message. This patch fixes that and trys to standardize the kmem debug messages as well.
This commit is contained in:
Brian Behlendorf
parent
8ffef449ef
commit
3cb77549d1
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@ -431,14 +431,17 @@ kmem_alloc_track(size_t size, int flags, const char *func, int line,
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flags & ~__GFP_ZERO);
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if (dptr == NULL) {
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CWARN("kmem_alloc(%ld, 0x%x) debug failed\n",
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sizeof(kmem_debug_t), flags);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING, "debug "
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"kmem_alloc(%ld, 0x%x) at %s:%d failed (%lld/%llu)\n",
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sizeof(kmem_debug_t), flags, func, line,
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kmem_alloc_used_read(), kmem_alloc_max);
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} else {
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/* Marked unlikely because we should never be doing this,
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* we tolerate to up 2 pages but a single page is best. */
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if (unlikely((size > PAGE_SIZE*2) && !(flags & KM_NODEBUG))) {
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CWARN("Large kmem_alloc(%llu, 0x%x) (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING, "large "
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"kmem_alloc(%llu, 0x%x) at %s:%d (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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kmem_alloc_used_read(), kmem_alloc_max);
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spl_debug_dumpstack(NULL);
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}
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@ -449,9 +452,9 @@ kmem_alloc_track(size_t size, int flags, const char *func, int line,
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dptr->kd_func = kstrdup(func, flags & ~__GFP_ZERO);
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if (unlikely(dptr->kd_func == NULL)) {
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kfree(dptr);
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CWARN("kstrdup() failed in kmem_alloc(%llu, 0x%x) "
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"(%lld/%llu)\n", (unsigned long long) size, flags,
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kmem_alloc_used_read(), kmem_alloc_max);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"debug kstrdup() at %s:%d failed (%lld/%llu)\n",
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func, line, kmem_alloc_used_read(), kmem_alloc_max);
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goto out;
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}
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@ -468,8 +471,9 @@ kmem_alloc_track(size_t size, int flags, const char *func, int line,
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if (unlikely(ptr == NULL)) {
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kfree(dptr->kd_func);
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kfree(dptr);
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CWARN("kmem_alloc(%llu, 0x%x) failed (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING, "kmem_alloc"
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"(%llu, 0x%x) at %s:%d failed (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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kmem_alloc_used_read(), kmem_alloc_max);
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goto out;
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}
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@ -491,10 +495,10 @@ kmem_alloc_track(size_t size, int flags, const char *func, int line,
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list_add_tail(&dptr->kd_list, &kmem_list);
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spin_unlock_irqrestore(&kmem_lock, irq_flags);
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CDEBUG_LIMIT(D_INFO, "kmem_alloc(%llu, 0x%x) = %p "
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"(%lld/%llu)\n", (unsigned long long) size, flags,
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ptr, kmem_alloc_used_read(),
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kmem_alloc_max);
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CDEBUG_LIMIT(D_INFO,
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"kmem_alloc(%llu, 0x%x) at %s:%d = %p (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line, ptr,
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kmem_alloc_used_read(), kmem_alloc_max);
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}
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out:
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RETURN(ptr);
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@ -549,8 +553,10 @@ vmem_alloc_track(size_t size, int flags, const char *func, int line)
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dptr = (kmem_debug_t *) kmalloc_nofail(sizeof(kmem_debug_t),
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flags & ~__GFP_ZERO);
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if (dptr == NULL) {
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CWARN("vmem_alloc(%ld, 0x%x) debug failed\n",
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sizeof(kmem_debug_t), flags);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING, "debug "
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"vmem_alloc(%ld, 0x%x) at %s:%d failed (%lld/%llu)\n",
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sizeof(kmem_debug_t), flags, func, line,
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vmem_alloc_used_read(), vmem_alloc_max);
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} else {
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/* We use kstrdup() below because the string pointed to by
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* __FUNCTION__ might not be available by the time we want
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@ -558,9 +564,9 @@ vmem_alloc_track(size_t size, int flags, const char *func, int line)
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dptr->kd_func = kstrdup(func, flags & ~__GFP_ZERO);
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if (unlikely(dptr->kd_func == NULL)) {
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kfree(dptr);
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CWARN("kstrdup() failed in vmem_alloc(%llu, 0x%x) "
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"(%lld/%llu)\n", (unsigned long long) size, flags,
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vmem_alloc_used_read(), vmem_alloc_max);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"debug kstrdup() at %s:%d failed (%lld/%llu)\n",
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func, line, vmem_alloc_used_read(), vmem_alloc_max);
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goto out;
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}
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@ -570,8 +576,9 @@ vmem_alloc_track(size_t size, int flags, const char *func, int line)
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if (unlikely(ptr == NULL)) {
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kfree(dptr->kd_func);
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kfree(dptr);
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CWARN("vmem_alloc(%llu, 0x%x) failed (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING, "vmem_alloc"
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"(%llu, 0x%x) at %s:%d failed (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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vmem_alloc_used_read(), vmem_alloc_max);
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goto out;
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}
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@ -596,10 +603,10 @@ vmem_alloc_track(size_t size, int flags, const char *func, int line)
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list_add_tail(&dptr->kd_list, &vmem_list);
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spin_unlock_irqrestore(&vmem_lock, irq_flags);
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CDEBUG_LIMIT(D_INFO, "vmem_alloc(%llu, 0x%x) = %p "
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"(%lld/%llu)\n", (unsigned long long) size, flags,
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ptr, vmem_alloc_used_read(),
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vmem_alloc_max);
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CDEBUG_LIMIT(D_INFO,
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"vmem_alloc(%llu, 0x%x) at %s:%d = %p (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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ptr, vmem_alloc_used_read(), vmem_alloc_max);
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}
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out:
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RETURN(ptr);
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@ -652,8 +659,9 @@ kmem_alloc_debug(size_t size, int flags, const char *func, int line,
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/* Marked unlikely because we should never be doing this,
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* we tolerate to up 2 pages but a single page is best. */
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if (unlikely((size > PAGE_SIZE * 2) && !(flags & KM_NODEBUG))) {
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CWARN("Large kmem_alloc(%llu, 0x%x) (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG(D_CONSOLE | D_WARNING,
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"Large kmem_alloc(%llu, 0x%x) at %s:%d (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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kmem_alloc_used_read(), kmem_alloc_max);
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spl_debug_dumpstack(NULL);
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}
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@ -669,16 +677,18 @@ kmem_alloc_debug(size_t size, int flags, const char *func, int line,
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}
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if (ptr == NULL) {
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CWARN("kmem_alloc(%llu, 0x%x) failed (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"kmem_alloc(%llu, 0x%x) at %s:%d failed (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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kmem_alloc_used_read(), kmem_alloc_max);
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} else {
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kmem_alloc_used_add(size);
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if (unlikely(kmem_alloc_used_read() > kmem_alloc_max))
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kmem_alloc_max = kmem_alloc_used_read();
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CDEBUG_LIMIT(D_INFO, "kmem_alloc(%llu, 0x%x) = %p "
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"(%lld/%llu)\n", (unsigned long long) size, flags, ptr,
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CDEBUG_LIMIT(D_INFO,
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"kmem_alloc(%llu, 0x%x) at %s:%d = %p (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line, ptr,
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kmem_alloc_used_read(), kmem_alloc_max);
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}
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RETURN(ptr);
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@ -716,8 +726,9 @@ vmem_alloc_debug(size_t size, int flags, const char *func, int line)
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ptr = __vmalloc(size, (flags | __GFP_HIGHMEM) & ~__GFP_ZERO,
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PAGE_KERNEL);
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if (ptr == NULL) {
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CWARN("vmem_alloc(%llu, 0x%x) failed (%lld/%llu)\n",
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(unsigned long long) size, flags,
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"vmem_alloc(%llu, 0x%x) at %s:%d failed (%lld/%llu)\n",
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(unsigned long long) size, flags, func, line,
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vmem_alloc_used_read(), vmem_alloc_max);
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} else {
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if (flags & __GFP_ZERO)
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@ -2036,13 +2047,15 @@ spl_kmem_fini(void)
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* at that address to aid in debugging. Performance is not
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* a serious concern here since it is module unload time. */
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if (kmem_alloc_used_read() != 0)
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CWARN("kmem leaked %ld/%ld bytes\n",
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kmem_alloc_used_read(), kmem_alloc_max);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"kmem leaked %ld/%ld bytes\n",
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kmem_alloc_used_read(), kmem_alloc_max);
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if (vmem_alloc_used_read() != 0)
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CWARN("vmem leaked %ld/%ld bytes\n",
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vmem_alloc_used_read(), vmem_alloc_max);
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CDEBUG_LIMIT(D_CONSOLE | D_WARNING,
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"vmem leaked %ld/%ld bytes\n",
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vmem_alloc_used_read(), vmem_alloc_max);
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spl_kmem_fini_tracking(&kmem_list, &kmem_lock);
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spl_kmem_fini_tracking(&vmem_list, &vmem_lock);
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