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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - performance hot issues in amdgpu_cs_ib_vm_chunk"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110481#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - performance hot issues in amdgpu_cs_ib_vm_chunk"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110481">bug 110481</a>
from <span class="vcard"><a class="email" href="mailto:baopeng88_com@163.com" title="baopeng <baopeng88_com@163.com>"> <span class="fn">baopeng</span></a>
</span></b>
<pre>performance hot stack:
start_thread ->
impl_thrd_routine ->
util_queue_thread_func ->
amdgpu_cs_submit_ib ->
amdgpu_cs_submit_raw ->
drmCommandWriteRead ->
ioctl ->
el0_svc ->
el0_svc_handler ->
el0_svc_common ->
__arm64_sys_ioctl ->
ksys_ioctl ->
do_vfs_ioctl ->
amdgpu_drm_ioctl ->
drm_ioctl ->
drm_ioctl_kernel ->
amdgpu_cs_ioctl ->
amdgpu_bo_kmap->
ttm_bo_kmap ->
vmap ->
__get_vm_area_node ->
alloc_vmap_area</pre>
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