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libdrm/iris: synchronization

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The Morph browser seems to access libdrm multi-threaded. Put this into a
separate commit in order to revert it easily.

issue #4664
This commit is contained in:
Sebastian Sumpf 2022-11-07 09:39:14 +01:00 committed by Christian Helmuth
parent 25c1cdec95
commit c0367fc30e
1 changed files with 3 additions and 0 deletions
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repos/libports/src/lib/libdrm/ioctl_iris.cc
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@ -536,6 +536,7 @@ class Drm_call
Genode::Env &_env { *vfs_gpu_env() };
Genode::Heap _heap { _env.ram(), _env.rm() };
Gpu::Connection _gpu_session { _env };
Genode::Mutex _drm_mutex { };
Gpu::Info_intel const &_gpu_info {
*_gpu_session.attached_info<Gpu::Info_intel>() };
@ -1363,6 +1364,8 @@ class Drm_call
int ioctl(unsigned long request, void *arg)
{
Genode::Mutex::Guard guard { _drm_mutex };
bool const device = device_ioctl(request);
return device ? _device_ioctl(device_number(request), arg)
: _generic_ioctl(command_number(request), arg);