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Re: [Qemu-devel] [PATCH qemu v2 09/13] memory: Rename mem_begin/mem_comm
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH qemu v2 09/13] memory: Rename mem_begin/mem_commit/mem_add helpers |
Date: |
Fri, 15 Sep 2017 11:10:26 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
On 15/09/2017 10:40, Alexey Kardashevskiy wrote:
> This renames some helper to reflect better what they do.
>
> This drops AS in address_space_update_flatview() as it is not used anymore
> and renames to flatview_render_new().
>
> Signed-off-by: Alexey Kardashevskiy <address@hidden>
> ---
> include/exec/memory-internal.h | 6 +++---
> exec.c | 7 +++----
> memory.c | 14 ++++++--------
> 3 files changed, 12 insertions(+), 15 deletions(-)
>
> diff --git a/include/exec/memory-internal.h b/include/exec/memory-internal.h
> index c8a5522510..e87a30fcae 100644
> --- a/include/exec/memory-internal.h
> +++ b/include/exec/memory-internal.h
> @@ -28,9 +28,9 @@ extern const MemoryRegionOps unassigned_mem_ops;
> bool memory_region_access_valid(MemoryRegion *mr, hwaddr addr,
> unsigned size, bool is_write);
>
> -void mem_add(FlatView *fv, MemoryRegionSection *section);
> -AddressSpaceDispatch *mem_begin(AddressSpace *as);
> -void mem_commit(AddressSpaceDispatch *d);
> +void flatview_mem_add(FlatView *fv, MemoryRegionSection *section);
Maybe flatview_add_to_dispatch?
> +AddressSpaceDispatch *address_space_dispatch_alloc(FlatView *fv);
> +void address_space_dispatch_compact(AddressSpaceDispatch *d);
phys_page_compact_all does not use nodes_nb so you can just remove the
indirection and rename phys_page_compact_all to
address_space_dispatch_compact.
> AddressSpaceDispatch *address_space_to_dispatch(AddressSpace *as);
> AddressSpaceDispatch *flatview_to_dispatch(FlatView *fv);
> diff --git a/exec.c b/exec.c
> index 3e02b82c05..11e0e3c927 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -1347,7 +1347,7 @@ static void register_multipage(FlatView *fv,
> phys_page_set(d, start_addr >> TARGET_PAGE_BITS, num_pages,
> section_index);
> }
>
> -void mem_add(FlatView *fv, MemoryRegionSection *section)
> +void flatview_mem_add(FlatView *fv, MemoryRegionSection *section)
> {
> MemoryRegionSection now = *section, remain = *section;
> Int128 page_size = int128_make64(TARGET_PAGE_SIZE);
> @@ -2673,9 +2673,8 @@ static void io_mem_init(void)
> NULL, UINT64_MAX);
> }
>
> -AddressSpaceDispatch *mem_begin(AddressSpace *as)
> +AddressSpaceDispatch *address_space_dispatch_alloc(FlatView *fv)
> {
> - FlatView *fv = address_space_to_flatview(as);
> AddressSpaceDispatch *d = g_new0(AddressSpaceDispatch, 1);
> uint16_t n;
>
> @@ -2699,7 +2698,7 @@ void address_space_dispatch_free(AddressSpaceDispatch
> *d)
> g_free(d);
> }
>
> -void mem_commit(AddressSpaceDispatch *d)
> +void address_space_dispatch_compact(AddressSpaceDispatch *d)
> {
> phys_page_compact_all(d, d->map.nodes_nb);
> }
> diff --git a/memory.c b/memory.c
> index 0f51445d30..0651be49ac 100644
> --- a/memory.c
> +++ b/memory.c
> @@ -900,14 +900,12 @@ static void
> address_space_update_topology_pass(AddressSpace *as,
> }
> }
>
> -static void address_space_update_flatview(AddressSpace *as,
> - FlatView *old_view,
> - FlatView *new_view)
> +static void flatview_render_new(FlatView *old_view, FlatView *new_view)
According to the remark in patch 3, old_view is not needed here (which
makes sense since each AddressSpaceDispatch is rebuilt from scratch).
Thanks,
Paolo
> {
> unsigned iold, inew;
> FlatRange *frold, *frnew;
>
> - new_view->dispatch = mem_begin(as);
> + new_view->dispatch = address_space_dispatch_alloc(new_view);
> /*
> * FIXME: this is cut-n-paste from address_space_update_topology_pass,
> * simplify it
> @@ -935,7 +933,7 @@ static void address_space_update_flatview(AddressSpace
> *as,
> /* In both and unchanged (except logging may have changed) */
> MemoryRegionSection mrs = section_from_flat_range(frnew,
> new_view);
>
> - mem_add(new_view, &mrs);
> + flatview_mem_add(new_view, &mrs);
>
> ++iold;
> ++inew;
> @@ -943,12 +941,12 @@ static void address_space_update_flatview(AddressSpace
> *as,
> /* In new */
> MemoryRegionSection mrs = section_from_flat_range(frnew,
> new_view);
>
> - mem_add(new_view, &mrs);
> + flatview_mem_add(new_view, &mrs);
>
> ++inew;
> }
> }
> - mem_commit(new_view->dispatch);
> + address_space_dispatch_compact(new_view->dispatch);
> }
>
> static void address_space_update_topology(AddressSpace *as)
> @@ -956,7 +954,7 @@ static void address_space_update_topology(AddressSpace
> *as)
> FlatView *old_view = address_space_get_flatview(as);
> FlatView *new_view = generate_memory_topology(as->root);
>
> - address_space_update_flatview(as, old_view, new_view);
> + flatview_render_new(old_view, new_view);
> address_space_update_topology_pass(as, old_view, new_view, false);
> address_space_update_topology_pass(as, old_view, new_view, true);
>
>
- [Qemu-devel] [PATCH qemu v2 00/13] memory: Reduce memory use, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 03/13] memory: Open code FlatView rendering, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 04/13] memory: Move FlatView allocation to a helper, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 06/13] memory: Remove AddressSpace pointer from AddressSpaceDispatch, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 08/13] memory: Cleanup after switching to FlatView, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 09/13] memory: Rename mem_begin/mem_commit/mem_add helpers, Alexey Kardashevskiy, 2017/09/15
- Re: [Qemu-devel] [PATCH qemu v2 09/13] memory: Rename mem_begin/mem_commit/mem_add helpers,
Paolo Bonzini <=
- [Qemu-devel] [PATCH qemu v2 10/13] memory: Move root MR from AddressSpace to FlatView, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 12/13] memory: Get rid of address_space_init_shareable, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 11/13] memory: Share FlatView's and dispatch trees between address spaces, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 07/13] memory: Switch memory from using AddressSpace to FlatView, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 13/13] memory: Add flat views to HMP "info mtree", Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 02/13] exec: Explicitely export target AS from address_space_translate_internal, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 01/13] memory: Postpone flatview and dispatch tree building till all devices are added, Alexey Kardashevskiy, 2017/09/15
- [Qemu-devel] [PATCH qemu v2 05/13] memory: Move AddressSpaceDispatch from AddressSpace to FlatView, Alexey Kardashevskiy, 2017/09/15