| Message ID | 20240207085856.11190-1-Kuan-Ying.Lee@mediatek.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | scripts/gdb/vmalloc: fix vmallocinfo error | expand |
On Wed, 7 Feb 2024 16:58:51 +0800 Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> wrote: > We met the gdb vmallocinfo issue as following. > > (gdb) lx-vmallocinfo > Python Exception <class 'gdb.error'>: No symbol "vmap_area_list" in current context. > Error occurred in Python: No symbol "vmap_area_list" in current context. > > Since Mitigate a vmap lock contention patchset [1], we > remove the vmap_area_list. I don't think that's correct? > We need to use vmap_nodes to iterate all vmallocinfo. > > [1] https://lore.kernel.org/linux-mm/20240102184633.748113-1-urezki@gmail.com/ vmap_area_list was removed by https://lkml.kernel.org/r/20240102184633.748113-6-urezki@gmail.com So I think this patch is actually a fix against mm.git:mm-unstable's mm-vmalloc-remove-vmap_area_list.patch? However this gdb function was probably probably broken earlier in that series, so perhaps this patch would be best staged as a predecessor to Ulad's vmalloc series. > Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> > Cc: Casper Li <casper.li@mediatek.com> > --- > scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++++----------------- > 1 file changed, 29 insertions(+), 27 deletions(-) > > diff --git a/scripts/gdb/linux/vmalloc.py b/scripts/gdb/linux/vmalloc.py > index d3c8a0274d1e..803f17371052 100644 > --- a/scripts/gdb/linux/vmalloc.py > +++ b/scripts/gdb/linux/vmalloc.py > @@ -29,32 +29,34 @@ class LxVmallocInfo(gdb.Command): > if not constants.LX_CONFIG_MMU: > raise gdb.GdbError("Requires MMU support") > > - vmap_area_list = gdb.parse_and_eval('vmap_area_list') > - for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): > - if not vmap_area['vm']: > - gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], > - vmap_area['va_end'] - vmap_area['va_start'])) > - continue > - v = vmap_area['vm'] > - gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) > - if v['caller']: > - gdb.write(" %s" % str(v['caller']).split(' ')[-1]) > - if v['nr_pages']: > - gdb.write(" pages=%d" % v['nr_pages']) > - if v['phys_addr']: > - gdb.write(" phys=0x%x" % v['phys_addr']) > - if v['flags'] & constants.LX_VM_IOREMAP: > - gdb.write(" ioremap") > - if v['flags'] & constants.LX_VM_ALLOC: > - gdb.write(" vmalloc") > - if v['flags'] & constants.LX_VM_MAP: > - gdb.write(" vmap") > - if v['flags'] & constants.LX_VM_USERMAP: > - gdb.write(" user") > - if v['flags'] & constants.LX_VM_DMA_COHERENT: > - gdb.write(" dma-coherent") > - if is_vmalloc_addr(v['pages']): > - gdb.write(" vpages") > - gdb.write("\n") > + nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') > + for i in range(0, nr_vmap_nodes): > + vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) > + for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): > + if not vmap_area['vm']: > + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], > + vmap_area['va_end'] - vmap_area['va_start'])) > + continue > + v = vmap_area['vm'] > + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) > + if v['caller']: > + gdb.write(" %s" % str(v['caller']).split(' ')[-1]) > + if v['nr_pages']: > + gdb.write(" pages=%d" % v['nr_pages']) > + if v['phys_addr']: > + gdb.write(" phys=0x%x" % v['phys_addr']) > + if v['flags'] & constants.LX_VM_IOREMAP: > + gdb.write(" ioremap") > + if v['flags'] & constants.LX_VM_ALLOC: > + gdb.write(" vmalloc") > + if v['flags'] & constants.LX_VM_MAP: > + gdb.write(" vmap") > + if v['flags'] & constants.LX_VM_USERMAP: > + gdb.write(" user") > + if v['flags'] & constants.LX_VM_DMA_COHERENT: > + gdb.write(" dma-coherent") > + if is_vmalloc_addr(v['pages']): > + gdb.write(" vpages") > + gdb.write("\n") > > LxVmallocInfo() > -- > 2.18.0
On Wed, 7 Feb 2024 15:56:23 -0800 Andrew Morton <akpm@linux-foundation.org> wrote: > > [1] https://lore.kernel.org/linux-mm/20240102184633.748113-1-urezki@gmail.com/ > > vmap_area_list was removed by https://lkml.kernel.org/r/20240102184633.748113-6-urezki@gmail.com > > So I think this patch is actually a fix against mm.git:mm-unstable's > mm-vmalloc-remove-vmap_area_list.patch? > > However this gdb function was probably probably broken earlier in that > series, so perhaps this patch would be best staged as a predecessor to > Ulad's vmalloc series. ie, this: From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Subject: scripts/gdb/vmalloc: fix vmallocinfo error Date: Wed, 7 Feb 2024 16:58:51 +0800 The patch series "Mitigate a vmap lock contention" removes vmap_area_list, which will break the gdb vmallocinfo command: (gdb) lx-vmallocinfo Python Exception <class 'gdb.error'>: No symbol "vmap_area_list" in current context. Error occurred in Python: No symbol "vmap_area_list" in current context. So we can instead use vmap_nodes to iterate all vmallocinfo. Link: https://lkml.kernel.org/r/20240207085856.11190-1-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: Casper Li <casper.li@mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++---------------- 1 file changed, 29 insertions(+), 27 deletions(-) --- a/scripts/gdb/linux/vmalloc.py~scripts-gdb-vmalloc-fix-vmallocinfo-error +++ a/scripts/gdb/linux/vmalloc.py @@ -29,32 +29,34 @@ class LxVmallocInfo(gdb.Command): if not constants.LX_CONFIG_MMU: raise gdb.GdbError("Requires MMU support") - vmap_area_list = gdb.parse_and_eval('vmap_area_list') - for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): - if not vmap_area['vm']: - gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], - vmap_area['va_end'] - vmap_area['va_start'])) - continue - v = vmap_area['vm'] - gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) - if v['caller']: - gdb.write(" %s" % str(v['caller']).split(' ')[-1]) - if v['nr_pages']: - gdb.write(" pages=%d" % v['nr_pages']) - if v['phys_addr']: - gdb.write(" phys=0x%x" % v['phys_addr']) - if v['flags'] & constants.LX_VM_IOREMAP: - gdb.write(" ioremap") - if v['flags'] & constants.LX_VM_ALLOC: - gdb.write(" vmalloc") - if v['flags'] & constants.LX_VM_MAP: - gdb.write(" vmap") - if v['flags'] & constants.LX_VM_USERMAP: - gdb.write(" user") - if v['flags'] & constants.LX_VM_DMA_COHERENT: - gdb.write(" dma-coherent") - if is_vmalloc_addr(v['pages']): - gdb.write(" vpages") - gdb.write("\n") + nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') + for i in range(0, nr_vmap_nodes): + vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) + for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): + if not vmap_area['vm']: + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], + vmap_area['va_end'] - vmap_area['va_start'])) + continue + v = vmap_area['vm'] + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) + if v['caller']: + gdb.write(" %s" % str(v['caller']).split(' ')[-1]) + if v['nr_pages']: + gdb.write(" pages=%d" % v['nr_pages']) + if v['phys_addr']: + gdb.write(" phys=0x%x" % v['phys_addr']) + if v['flags'] & constants.LX_VM_IOREMAP: + gdb.write(" ioremap") + if v['flags'] & constants.LX_VM_ALLOC: + gdb.write(" vmalloc") + if v['flags'] & constants.LX_VM_MAP: + gdb.write(" vmap") + if v['flags'] & constants.LX_VM_USERMAP: + gdb.write(" user") + if v['flags'] & constants.LX_VM_DMA_COHERENT: + gdb.write(" dma-coherent") + if is_vmalloc_addr(v['pages']): + gdb.write(" vpages") + gdb.write("\n") LxVmallocInfo()
On Wed, Feb 07, 2024 at 03:59:29PM -0800, Andrew Morton wrote: > On Wed, 7 Feb 2024 15:56:23 -0800 Andrew Morton <akpm@linux-foundation.org> wrote: > > > > [1] https://lore.kernel.org/linux-mm/20240102184633.748113-1-urezki@gmail.com/ > > > > vmap_area_list was removed by https://lkml.kernel.org/r/20240102184633.748113-6-urezki@gmail.com > > > > So I think this patch is actually a fix against mm.git:mm-unstable's > > mm-vmalloc-remove-vmap_area_list.patch? > > > > However this gdb function was probably probably broken earlier in that > > series, so perhaps this patch would be best staged as a predecessor to > > Ulad's vmalloc series. > > ie, this: > > > From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> > Subject: scripts/gdb/vmalloc: fix vmallocinfo error > Date: Wed, 7 Feb 2024 16:58:51 +0800 > > The patch series "Mitigate a vmap lock contention" removes vmap_area_list, > which will break the gdb vmallocinfo command: > > (gdb) lx-vmallocinfo > Python Exception <class 'gdb.error'>: No symbol "vmap_area_list" in current context. > Error occurred in Python: No symbol "vmap_area_list" in current context. > > So we can instead use vmap_nodes to iterate all vmallocinfo. > > Link: https://lkml.kernel.org/r/20240207085856.11190-1-Kuan-Ying.Lee@mediatek.com > Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> > Cc: Casper Li <casper.li@mediatek.com> > Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > Cc: Chinwen Chang <chinwen.chang@mediatek.com> > Cc: Jan Kiszka <jan.kiszka@siemens.com> > Cc: Kieran Bingham <kbingham@kernel.org> > Cc: Matthias Brugger <matthias.bgg@gmail.com> > Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com> > Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> > Signed-off-by: Andrew Morton <akpm@linux-foundation.org> > --- > > scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++---------------- > 1 file changed, 29 insertions(+), 27 deletions(-) > > --- a/scripts/gdb/linux/vmalloc.py~scripts-gdb-vmalloc-fix-vmallocinfo-error > +++ a/scripts/gdb/linux/vmalloc.py > @@ -29,32 +29,34 @@ class LxVmallocInfo(gdb.Command): > if not constants.LX_CONFIG_MMU: > raise gdb.GdbError("Requires MMU support") > > - vmap_area_list = gdb.parse_and_eval('vmap_area_list') > - for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): > - if not vmap_area['vm']: > - gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], > - vmap_area['va_end'] - vmap_area['va_start'])) > - continue > - v = vmap_area['vm'] > - gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) > - if v['caller']: > - gdb.write(" %s" % str(v['caller']).split(' ')[-1]) > - if v['nr_pages']: > - gdb.write(" pages=%d" % v['nr_pages']) > - if v['phys_addr']: > - gdb.write(" phys=0x%x" % v['phys_addr']) > - if v['flags'] & constants.LX_VM_IOREMAP: > - gdb.write(" ioremap") > - if v['flags'] & constants.LX_VM_ALLOC: > - gdb.write(" vmalloc") > - if v['flags'] & constants.LX_VM_MAP: > - gdb.write(" vmap") > - if v['flags'] & constants.LX_VM_USERMAP: > - gdb.write(" user") > - if v['flags'] & constants.LX_VM_DMA_COHERENT: > - gdb.write(" dma-coherent") > - if is_vmalloc_addr(v['pages']): > - gdb.write(" vpages") > - gdb.write("\n") > + nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') > + for i in range(0, nr_vmap_nodes): > + vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) > + for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): > + if not vmap_area['vm']: > + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], > + vmap_area['va_end'] - vmap_area['va_start'])) > + continue > + v = vmap_area['vm'] > + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) > + if v['caller']: > + gdb.write(" %s" % str(v['caller']).split(' ')[-1]) > + if v['nr_pages']: > + gdb.write(" pages=%d" % v['nr_pages']) > + if v['phys_addr']: > + gdb.write(" phys=0x%x" % v['phys_addr']) > + if v['flags'] & constants.LX_VM_IOREMAP: > + gdb.write(" ioremap") > + if v['flags'] & constants.LX_VM_ALLOC: > + gdb.write(" vmalloc") > + if v['flags'] & constants.LX_VM_MAP: > + gdb.write(" vmap") > + if v['flags'] & constants.LX_VM_USERMAP: > + gdb.write(" user") > + if v['flags'] & constants.LX_VM_DMA_COHERENT: > + gdb.write(" dma-coherent") > + if is_vmalloc_addr(v['pages']): > + gdb.write(" vpages") > + gdb.write("\n") > > LxVmallocInfo() > _ > Thanks for fixing and helping! -- Uladzislau Rezki
On Wed, 2024-02-07 at 15:59 -0800, Andrew Morton wrote: > > External email : Please do not click links or open attachments until > you have verified the sender or the content. > On Wed, 7 Feb 2024 15:56:23 -0800 Andrew Morton < > akpm@linux-foundation.org> wrote: > > > > [1] > https://lore.kernel.org/linux-mm/20240102184633.748113-1-urezki@gmail.com/ > > > > vmap_area_list was removed by > https://lkml.kernel.org/r/20240102184633.748113-6-urezki@gmail.com > > > > So I think this patch is actually a fix against mm.git:mm- > unstable's > > mm-vmalloc-remove-vmap_area_list.patch? > > Yes, you are right. Thanks for helping to fix the commit message. > > However this gdb function was probably probably broken earlier in > that > > series, so perhaps this patch would be best staged as a predecessor > to > > Ulad's vmalloc series. > > ie, this: > > > From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> > Subject: scripts/gdb/vmalloc: fix vmallocinfo error > Date: Wed, 7 Feb 2024 16:58:51 +0800 > > The patch series "Mitigate a vmap lock contention" removes > vmap_area_list, > which will break the gdb vmallocinfo command: > > (gdb) lx-vmallocinfo > Python Exception <class 'gdb.error'>: No symbol "vmap_area_list" in > current context. > Error occurred in Python: No symbol "vmap_area_list" in current > context. > > So we can instead use vmap_nodes to iterate all vmallocinfo. > > Link: > https://lkml.kernel.org/r/20240207085856.11190-1-Kuan-Ying.Lee@mediatek.com > Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> > Cc: Casper Li <casper.li@mediatek.com> > Cc: AngeloGioacchino Del Regno < > angelogioacchino.delregno@collabora.com> > Cc: Chinwen Chang <chinwen.chang@mediatek.com> > Cc: Jan Kiszka <jan.kiszka@siemens.com> > Cc: Kieran Bingham <kbingham@kernel.org> > Cc: Matthias Brugger <matthias.bgg@gmail.com> > Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com> > Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> > Signed-off-by: Andrew Morton <akpm@linux-foundation.org> > --- > > scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++--------------- > - > 1 file changed, 29 insertions(+), 27 deletions(-) > > --- a/scripts/gdb/linux/vmalloc.py~scripts-gdb-vmalloc-fix- > vmallocinfo-error > +++ a/scripts/gdb/linux/vmalloc.py > @@ -29,32 +29,34 @@ class LxVmallocInfo(gdb.Command): > if not constants.LX_CONFIG_MMU: > raise gdb.GdbError("Requires MMU support") > > - vmap_area_list = gdb.parse_and_eval('vmap_area_list') > - for vmap_area in lists.list_for_each_entry(vmap_area_list, > vmap_area_ptr_type, "list"): > - if not vmap_area['vm']: > - gdb.write("0x%x-0x%x %10d vm_map_ram\n" % > (vmap_area['va_start'], vmap_area['va_end'], > - vmap_area['va_end'] - vmap_area['va_start'])) > - continue > - v = vmap_area['vm'] > - gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + > v['size'], v['size'])) > - if v['caller']: > - gdb.write(" %s" % str(v['caller']).split(' ')[-1]) > - if v['nr_pages']: > - gdb.write(" pages=%d" % v['nr_pages']) > - if v['phys_addr']: > - gdb.write(" phys=0x%x" % v['phys_addr']) > - if v['flags'] & constants.LX_VM_IOREMAP: > - gdb.write(" ioremap") > - if v['flags'] & constants.LX_VM_ALLOC: > - gdb.write(" vmalloc") > - if v['flags'] & constants.LX_VM_MAP: > - gdb.write(" vmap") > - if v['flags'] & constants.LX_VM_USERMAP: > - gdb.write(" user") > - if v['flags'] & constants.LX_VM_DMA_COHERENT: > - gdb.write(" dma-coherent") > - if is_vmalloc_addr(v['pages']): > - gdb.write(" vpages") > - gdb.write("\n") > + nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') > + for i in range(0, nr_vmap_nodes): > + vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) > + for vmap_area in > lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, > "list"): > + if not vmap_area['vm']: > + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % > (vmap_area['va_start'], vmap_area['va_end'], > + vmap_area['va_end'] - > vmap_area['va_start'])) > + continue > + v = vmap_area['vm'] > + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + > v['size'], v['size'])) > + if v['caller']: > + gdb.write(" %s" % str(v['caller']).split(' ')[- > 1]) > + if v['nr_pages']: > + gdb.write(" pages=%d" % v['nr_pages']) > + if v['phys_addr']: > + gdb.write(" phys=0x%x" % v['phys_addr']) > + if v['flags'] & constants.LX_VM_IOREMAP: > + gdb.write(" ioremap") > + if v['flags'] & constants.LX_VM_ALLOC: > + gdb.write(" vmalloc") > + if v['flags'] & constants.LX_VM_MAP: > + gdb.write(" vmap") > + if v['flags'] & constants.LX_VM_USERMAP: > + gdb.write(" user") > + if v['flags'] & constants.LX_VM_DMA_COHERENT: > + gdb.write(" dma-coherent") > + if is_vmalloc_addr(v['pages']): > + gdb.write(" vpages") > + gdb.write("\n") > > LxVmallocInfo() > _ >
diff --git a/scripts/gdb/linux/vmalloc.py b/scripts/gdb/linux/vmalloc.py index d3c8a0274d1e..803f17371052 100644 --- a/scripts/gdb/linux/vmalloc.py +++ b/scripts/gdb/linux/vmalloc.py @@ -29,32 +29,34 @@ class LxVmallocInfo(gdb.Command): if not constants.LX_CONFIG_MMU: raise gdb.GdbError("Requires MMU support") - vmap_area_list = gdb.parse_and_eval('vmap_area_list') - for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): - if not vmap_area['vm']: - gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], - vmap_area['va_end'] - vmap_area['va_start'])) - continue - v = vmap_area['vm'] - gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) - if v['caller']: - gdb.write(" %s" % str(v['caller']).split(' ')[-1]) - if v['nr_pages']: - gdb.write(" pages=%d" % v['nr_pages']) - if v['phys_addr']: - gdb.write(" phys=0x%x" % v['phys_addr']) - if v['flags'] & constants.LX_VM_IOREMAP: - gdb.write(" ioremap") - if v['flags'] & constants.LX_VM_ALLOC: - gdb.write(" vmalloc") - if v['flags'] & constants.LX_VM_MAP: - gdb.write(" vmap") - if v['flags'] & constants.LX_VM_USERMAP: - gdb.write(" user") - if v['flags'] & constants.LX_VM_DMA_COHERENT: - gdb.write(" dma-coherent") - if is_vmalloc_addr(v['pages']): - gdb.write(" vpages") - gdb.write("\n") + nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') + for i in range(0, nr_vmap_nodes): + vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) + for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): + if not vmap_area['vm']: + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], + vmap_area['va_end'] - vmap_area['va_start'])) + continue + v = vmap_area['vm'] + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) + if v['caller']: + gdb.write(" %s" % str(v['caller']).split(' ')[-1]) + if v['nr_pages']: + gdb.write(" pages=%d" % v['nr_pages']) + if v['phys_addr']: + gdb.write(" phys=0x%x" % v['phys_addr']) + if v['flags'] & constants.LX_VM_IOREMAP: + gdb.write(" ioremap") + if v['flags'] & constants.LX_VM_ALLOC: + gdb.write(" vmalloc") + if v['flags'] & constants.LX_VM_MAP: + gdb.write(" vmap") + if v['flags'] & constants.LX_VM_USERMAP: + gdb.write(" user") + if v['flags'] & constants.LX_VM_DMA_COHERENT: + gdb.write(" dma-coherent") + if is_vmalloc_addr(v['pages']): + gdb.write(" vpages") + gdb.write("\n") LxVmallocInfo()
We met the gdb vmallocinfo issue as following. (gdb) lx-vmallocinfo Python Exception <class 'gdb.error'>: No symbol "vmap_area_list" in current context. Error occurred in Python: No symbol "vmap_area_list" in current context. Since Mitigate a vmap lock contention patchset [1], we remove the vmap_area_list. We need to use vmap_nodes to iterate all vmallocinfo. [1] https://lore.kernel.org/linux-mm/20240102184633.748113-1-urezki@gmail.com/ Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: Casper Li <casper.li@mediatek.com> --- scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++++----------------- 1 file changed, 29 insertions(+), 27 deletions(-)