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Hello all, I have been trying to study the radeon open source driver and have some questions after turning the debug flag on. System Information --------------- uname -a Linux gilubuntu1 3.0.1vipindebug #1 SMP Thu Aug 11 11:17:24 EDT 2011 i686 GNU/Linux kernel option - drm.debug=1 glxinfo | grep rendering direct rendering: Yes lspci -vvv | grep ATI 01:00.0 VGA compatible controller: ATI Technologies Inc RV710 [Radeon HD 4550] (prog-if 00 [VGA controller]) Subsystem: ATI Technologies Inc Device 0104 lsmod - relevant entries ttm 110688 1 radeon drm_kms_helper 49424 1 radeon drm 317625 5 radeon,ttm,drm_kms_helper agpgart 56250 2 ttm,drm i2c_algo_bit 10782 1 radeon --------------------------------------------------------------------- Question 1. Empty /proc/dri/0 bufs, queues files Is this an expected behavior ? I have tried generating extensive 3D workloads, but the file remains empty. Question 2. /sys/kernel/debug/dri/ There are two directories 0 & 64, what does the 64 entry signify ? Question 3. The contents of /sys/kernel/debug/dri/0 contains 15 radeon_ib_00xx Does this mean, the card has 15 indirect buffers ? Also, does this interface shows me the ringbuffer data like i915. Question 4. The kernel log shows entries like these (massive amounts) Aug 11 13:19:01 gilubuntu1 kernel: [ 4251.705377] [drm:drm_ioctl], pid=1544, cmd=0xc0086464, nr=0x64, dev 0xe200, auth=1 Aug 11 13:19:01 gilubuntu1 kernel: [ 4251.705394] [drm:r600_irq_set], r600_irq_set: sw int Shouldn't it have other debug entries other than these two ? Thank You Vipin Jain |
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