* Re: [oe-commits] Pratheesh Gangadhar : glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs when doing DSP based GStreamer playback [not found] <E1MgfbN-0005E3-EZ@melo.openembedded.org> @ 2009-08-28 12:50 ` Marcin Juszkiewicz 2009-08-28 13:50 ` Koen Kooi 0 siblings, 1 reply; 2+ messages in thread From: Marcin Juszkiewicz @ 2009-08-28 12:50 UTC (permalink / raw) To: openembedded-devel Dnia czwartek, 27 sierpnia 2009 o 16:05:21 git version control napisał(a): > Module: openembedded.git > Branch: org.openembedded.dev > Commit: 1eb89aacbc6830fe242eac36ba8bcb61d98807f5 > URL: > http://gitweb.openembedded.net/?p=openembedded.git&a=commit;h=1eb89aacbc68 >30fe242eac36ba8bcb61d98807f5 > > Author: Pratheesh Gangadhar <pratheesh.gangadhar@gmail.com> > Date: Thu Aug 27 02:51:00 2009 +0530 > > glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs > when doing DSP based GStreamer playback > > GLIB by default uses ARMV5 instructions for emulating atomic operations and > this patch (derived from > https://stage.maemo.org/svn/maemo/projects/haf/trunk/glib/debian/patches/25 >-gatomic.patch) make use ARMV6 atomic instructions instead. CPU goes into > "sched_yield" while loop during hang - due to a race condition triggered by > high rate context switching while running DSP plugins. 1. Your change reverted PR from r4 (set in glib.inc) to r1 2. This is not buildable for arm <6: | arm-angstrom-linux-gnueabi-libtool: compile: ccache arm-angstrom-linux-gnueabi-gcc -march=armv5te -mtune=arm926ej-s -mthumb-interwork -mno-thumb -D HAVE_CONFIG_H -I. -I.. -I.. -DG_LOG_DOMAIN=\"GLib\" -DG_DISABLE_CAST_CHECKS -DG_DISABLE_ASSERT -DG_DISABLE_CHECKS -DG_DISABLE_DEPRECATED -DGLIB_COMPIL ATION -DPCRE_STATIC -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -DG_DISABLE_SINGLE_INCLUDES -pthread -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -fexpensive-optimizations -frename-registers -fomit-frame- pointer -O2 -ggdb3 -Wall -mno-thumb -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -fexpensive-optimizations - frename-registers -fomit-frame-pointer -O2 -ggdb3 -Wall -MT libgatomic_la-gatomic.lo -MD -MP -MF .deps/libgatomic_la-gatomic.Tpo -c gatomic.c -fPIC -DPIC -o .libs/libgatomic_la-gatomic.o | /tmp/ccEqvIUs.s: Assembler messages: | /tmp/ccEqvIUs.s:9449: Error: selected processor does not support `ldrex r0,[r2]' | /tmp/ccEqvIUs.s:9451: Error: selected processor does not support `strex r3,ip,[r2]' | /tmp/ccEqvIUs.s:9477: Error: selected processor does not support `ldrex r2,[r0]' | /tmp/ccEqvIUs.s:9479: Error: selected processor does not support `strex r3,r2,[r0]' | /tmp/ccEqvIUs.s:9504: Error: selected processor does not support `ldrex r3,[r0]' | /tmp/ccEqvIUs.s:9507: Error: selected processor does not support `strexeq ip,r2,[r0]' | /tmp/ccEqvIUs.s:9532: Error: selected processor does not support `ldrex r3,[r0]' | /tmp/ccEqvIUs.s:9535: Error: selected processor does not support `strexeq ip,r2,[r0]' | /tmp/ccEqvIUs.s:9577: Error: selected processor does not support `ldrex r3,[r0]' | /tmp/ccEqvIUs.s:9578: Error: selected processor does not support `strex r3,r1,[r0]' | /tmp/ccEqvIUs.s:9620: Error: selected processor does not support `ldrex r3,[r0]' | /tmp/ccEqvIUs.s:9621: Error: selected processor does not support `strex r3,r1,[r0]' | make[4]: *** [libgatomic_la-gatomic.lo] Error 1 | make[4]: *** Waiting for unfinished jobs.... Regards, -- JID: hrw@jabber.org Website: http://marcin.juszkiewicz.com.pl/ LinkedIn: http://www.linkedin.com/in/marcinjuszkiewicz ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [oe-commits] Pratheesh Gangadhar : glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs when doing DSP based GStreamer playback 2009-08-28 12:50 ` [oe-commits] Pratheesh Gangadhar : glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs when doing DSP based GStreamer playback Marcin Juszkiewicz @ 2009-08-28 13:50 ` Koen Kooi 0 siblings, 0 replies; 2+ messages in thread From: Koen Kooi @ 2009-08-28 13:50 UTC (permalink / raw) To: openembedded-devel On 28-08-09 14:50, Marcin Juszkiewicz wrote: > Dnia czwartek, 27 sierpnia 2009 o 16:05:21 git version control napisał(a): >> Module: openembedded.git >> Branch: org.openembedded.dev >> Commit: 1eb89aacbc6830fe242eac36ba8bcb61d98807f5 >> URL: >> http://gitweb.openembedded.net/?p=openembedded.git&a=commit;h=1eb89aacbc68 >> 30fe242eac36ba8bcb61d98807f5 >> >> Author: Pratheesh Gangadhar<pratheesh.gangadhar@gmail.com> >> Date: Thu Aug 27 02:51:00 2009 +0530 >> >> glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs >> when doing DSP based GStreamer playback >> >> GLIB by default uses ARMV5 instructions for emulating atomic operations and >> this patch (derived from >> https://stage.maemo.org/svn/maemo/projects/haf/trunk/glib/debian/patches/25 >> -gatomic.patch) make use ARMV6 atomic instructions instead. CPU goes into >> "sched_yield" while loop during hang - due to a race condition triggered by >> high rate context switching while running DSP plugins. > > 1. Your change reverted PR from r4 (set in glib.inc) to r1 I overlooked that when reviewing, sorry > 2. This is not buildable for arm<6: > > | arm-angstrom-linux-gnueabi-libtool: compile: ccache arm-angstrom-linux-gnueabi-gcc -march=armv5te -mtune=arm926ej-s -mthumb-interwork -mno-thumb -D > HAVE_CONFIG_H -I. -I.. -I.. -DG_LOG_DOMAIN=\"GLib\" -DG_DISABLE_CAST_CHECKS -DG_DISABLE_ASSERT -DG_DISABLE_CHECKS -DG_DISABLE_DEPRECATED -DGLIB_COMPIL > ATION -DPCRE_STATIC -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -DG_DISABLE_SINGLE_INCLUDES -pthread > -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -fexpensive-optimizations -frename-registers -fomit-frame- > pointer -O2 -ggdb3 -Wall -mno-thumb -isystem/home/hrw/devel/build/angstrom/tmp/staging/armv5te-angstrom-linux-gnueabi/usr/include -fexpensive-optimizations - > frename-registers -fomit-frame-pointer -O2 -ggdb3 -Wall -MT libgatomic_la-gatomic.lo -MD -MP -MF .deps/libgatomic_la-gatomic.Tpo -c gatomic.c -fPIC -DPIC -o > .libs/libgatomic_la-gatomic.o > | /tmp/ccEqvIUs.s: Assembler messages: > | /tmp/ccEqvIUs.s:9449: Error: selected processor does not support `ldrex r0,[r2]' > | /tmp/ccEqvIUs.s:9451: Error: selected processor does not support `strex r3,ip,[r2]' > | /tmp/ccEqvIUs.s:9477: Error: selected processor does not support `ldrex r2,[r0]' > | /tmp/ccEqvIUs.s:9479: Error: selected processor does not support `strex r3,r2,[r0]' > | /tmp/ccEqvIUs.s:9504: Error: selected processor does not support `ldrex r3,[r0]' > | /tmp/ccEqvIUs.s:9507: Error: selected processor does not support `strexeq ip,r2,[r0]' > | /tmp/ccEqvIUs.s:9532: Error: selected processor does not support `ldrex r3,[r0]' > | /tmp/ccEqvIUs.s:9535: Error: selected processor does not support `strexeq ip,r2,[r0]' > | /tmp/ccEqvIUs.s:9577: Error: selected processor does not support `ldrex r3,[r0]' > | /tmp/ccEqvIUs.s:9578: Error: selected processor does not support `strex r3,r1,[r0]' > | /tmp/ccEqvIUs.s:9620: Error: selected processor does not support `ldrex r3,[r0]' > | /tmp/ccEqvIUs.s:9621: Error: selected processor does not support `strex r3,r1,[r0]' > | make[4]: *** [libgatomic_la-gatomic.lo] Error 1 > | make[4]: *** Waiting for unfinished jobs.... That's weird, since that's all wrapped in 'if G_ATOMIC_ARM > 6', but I made the patch armv6 and armv7 only to be really sure. Thanks for finding this issue. regards, Koen ^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-08-28 12:50 ` [oe-commits] Pratheesh Gangadhar : glib-2.0 2.21.4: add armv6 atomic ops, this fixes 100% utilization hangs when doing DSP based GStreamer playback Marcin Juszkiewicz
2009-08-28 13:50 ` Koen Kooi
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