<div class="gmail_quote">2012/12/5 Rob Clark <<a href="mailto:robdclark@gmail.com" target="_blank">robdclark@gmail.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="HOEnZb"><div class="h5">On Wed, Dec 5, 2012 at 12:55 AM, Inki Dae <<a href="mailto:inki.dae@samsung.com">inki.dae@samsung.com</a>> wrote: > Hi > > 2012/12/5 Prathyush K <<a href="mailto:prathyush@chromium.org">prathyush@chromium.org</a>> >> >> Hi, >> >> Please check the reference counts for framebuffers: This is for one >> modetest (without flipping) >> >> Bootup: >> [ 2.310000] KP: drm_framebuffer_init edb86900 - fb0 >> refcount 1 >> [ 2.310000] KP: drm_framebuffer_reference edb86900 - fb0 >> refcount 2 >> >> Modetest: >> [ 26.560000] KP: drm_framebuffer_init ed43c900 - fb1 >> refcount 1 (done in addFB) >> [ 26.560000] KP: drm_framebuffer_reference ed43c900 - fb1 >> refcount 2 (done in setCRTC for new fb) >> [ 26.570000] KP: drm_framebuffer_unreference edb86900 - fb0 >> refcount 1 (done in setCRTC for old fb) >> >> End of modetest and drm release: >> [ 39.080000] KP: drm_framebuffer_unreference ed43c900 - fb1 >> refcount 1 (this is done by the unref in drm_framebuffer_remove) >> [ 39.100000] KP: drm_framebuffer_reference edb86900 - fb0 >> refcount 2 (this is done when we restore fbdev) >> >> At the end of modetest, you can see that fb1 refcount is still 1 and the >> memory does not get freed. >> >> You can put a print in the low level buffer allocate and deallocate and >> you can see that deallocate does not get called for fb1. >> >> And also, I see a new dma-address getting created each time - e.g. >> 20400000, 20800000, 20C00000. >> >> Please check modetest without enabling flipping. modetest -s >> 17@4:1280x720. > > > We missed the test without vblank. Right tested and confirmed. > </div></div>just fwiw, I've found debugfs file giving a dump of all the fb's and gem objects in omapdrm has been quite useful in testing for and debugging memory leaks </blockquote><div> Thanks for information. I looked into your driver and it seems useful to us. Actually we have been using similar way and that includes other memory relevant things also. Thanks, Inki Dae </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> BR, -R <div class="HOEnZb"><div class="h5">_______________________________________________ dri-devel mailing list <a href="mailto:dri-devel@lists.freedesktop.org">dri-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/dri-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/dri-devel</a> </div></div></blockquote></div>