Hi all,
On Wed, 13 Mar 2024 10:51:17 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> On Thu, 7 Mar 2024 12:36:19 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > Today's linux-next merge of the bpf-next tree got a conflict in:
> >
> > mm/vmalloc.c
> >
> > between commit:
> >
> > 8e1d743f2c26 ("mm: vmalloc: support multiple nodes in vmallocinfo")
> >
> > from the mm-stable tree and commit:
> >
> > e6f798225a31 ("mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().")
> >
> > from the bpf-next tree.
> >
> > I fixed it up (I think - see below) and can carry the fix as necessary.
> > This is now fixed as far as linux-next is concerned, but any non trivial
> > conflicts should be mentioned to your upstream maintainer when your tree
> > is submitted for merging. You may also want to consider cooperating
> > with the maintainer of the conflicting tree to minimise any particularly
> > complex conflicts.
> >
> >
> > diff --cc mm/vmalloc.c
> > index 25a8df497255,e5b8c70950bc..000000000000
> > --- a/mm/vmalloc.c
> > +++ b/mm/vmalloc.c
> > @@@ -4755,81 -4423,70 +4820,84 @@@ static void show_numa_info(struct seq_f
> >
> > static void show_purge_info(struct seq_file *m)
> > {
> > + struct vmap_node *vn;
> > struct vmap_area *va;
> > + int i;
> >
> > - spin_lock(&purge_vmap_area_lock);
> > - list_for_each_entry(va, &purge_vmap_area_list, list) {
> > - seq_printf(m, "0x%pK-0x%pK %7ld unpurged vm_area\n",
> > - (void *)va->va_start, (void *)va->va_end,
> > - va->va_end - va->va_start);
> > - }
> > - spin_unlock(&purge_vmap_area_lock);
> > -}
> > + for (i = 0; i < nr_vmap_nodes; i++) {
> > + vn = &vmap_nodes[i];
> >
> > -static int s_show(struct seq_file *m, void *p)
> > -{
> > - struct vmap_area *va;
> > - struct vm_struct *v;
> > -
> > - va = list_entry(p, struct vmap_area, list);
> > -
> > - if (!va->vm) {
> > - if (va->flags & VMAP_RAM)
> > - seq_printf(m, "0x%pK-0x%pK %7ld vm_map_ram\n",
> > + spin_lock(&vn->lazy.lock);
> > + list_for_each_entry(va, &vn->lazy.head, list) {
> > + seq_printf(m, "0x%pK-0x%pK %7ld unpurged vm_area\n",
> > (void *)va->va_start, (void *)va->va_end,
> > va->va_end - va->va_start);
> > -
> > - goto final;
> > + }
> > + spin_unlock(&vn->lazy.lock);
> > }
> > +}
> >
> > - v = va->vm;
> > +static int vmalloc_info_show(struct seq_file *m, void *p)
> > +{
> > + struct vmap_node *vn;
> > + struct vmap_area *va;
> > + struct vm_struct *v;
> > + int i;
> >
> > - seq_printf(m, "0x%pK-0x%pK %7ld",
> > - v->addr, v->addr + v->size, v->size);
> > + for (i = 0; i < nr_vmap_nodes; i++) {
> > + vn = &vmap_nodes[i];
> >
> > - if (v->caller)
> > - seq_printf(m, " %pS", v->caller);
> > + spin_lock(&vn->busy.lock);
> > + list_for_each_entry(va, &vn->busy.head, list) {
> > + if (!va->vm) {
> > + if (va->flags & VMAP_RAM)
> > + seq_printf(m, "0x%pK-0x%pK %7ld vm_map_ram\n",
> > + (void *)va->va_start, (void *)va->va_end,
> > + va->va_end - va->va_start);
> >
> > - if (v->nr_pages)
> > - seq_printf(m, " pages=%d", v->nr_pages);
> > + continue;
> > + }
> >
> > - if (v->phys_addr)
> > - seq_printf(m, " phys=%pa", &v->phys_addr);
> > + v = va->vm;
> >
> > - if (v->flags & VM_IOREMAP)
> > - seq_puts(m, " ioremap");
> > + seq_printf(m, "0x%pK-0x%pK %7ld",
> > + v->addr, v->addr + v->size, v->size);
> >
> > - if (v->flags & VM_SPARSE)
> > - seq_puts(m, " sparse");
> > + if (v->caller)
> > + seq_printf(m, " %pS", v->caller);
> >
> > - if (v->flags & VM_ALLOC)
> > - seq_puts(m, " vmalloc");
> > + if (v->nr_pages)
> > + seq_printf(m, " pages=%d", v->nr_pages);
> >
> > - if (v->flags & VM_MAP)
> > - seq_puts(m, " vmap");
> > + if (v->phys_addr)
> > + seq_printf(m, " phys=%pa", &v->phys_addr);
> >
> > - if (v->flags & VM_USERMAP)
> > - seq_puts(m, " user");
> > + if (v->flags & VM_IOREMAP)
> > + seq_puts(m, " ioremap");
> >
> > - if (v->flags & VM_DMA_COHERENT)
> > - seq_puts(m, " dma-coherent");
> > ++ if (v->flags & VM_SPARSE)
> > ++ seq_puts(m, " sparse");
> > +
> > - if (is_vmalloc_addr(v->pages))
> > - seq_puts(m, " vpages");
> > + if (v->flags & VM_ALLOC)
> > + seq_puts(m, " vmalloc");
> >
> > - show_numa_info(m, v);
> > - seq_putc(m, '\n');
> > + if (v->flags & VM_MAP)
> > + seq_puts(m, " vmap");
> > +
> > + if (v->flags & VM_USERMAP)
> > + seq_puts(m, " user");
> > +
> > + if (v->flags & VM_DMA_COHERENT)
> > + seq_puts(m, " dma-coherent");
> > +
> > + if (is_vmalloc_addr(v->pages))
> > + seq_puts(m, " vpages");
> > +
> > + show_numa_info(m, v);
> > + seq_putc(m, '\n');
> > + }
> > + spin_unlock(&vn->busy.lock);
> > + }
> >
> > /*
> > * As a final step, dump "unpurged" areas.
>
> This is now a conflict between the net-next tree and the mm-stable tree.
... and now a conflict between te mm-stable tree and Linus' tree.
--
Cheers,
Stephen Rothwell
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