Dave it's complaining about the kzalloc in omap2_dpll_round_rate() which you added to generate the rate cache.
Actually I don't know what it's complaining about exactly except somehow it's a "bad time to do kzalloc()", and it's the only code that triggers the problem. Since there are only a handful of discrete frequencies, I guess you should make a patch which adapts this code to use a static array of struct dpll_rate_list and a static "high water mark" replacing kzalloc. If it reaches the size of the array, just don't cache the result any more. Or, if you can see what the actual complaint is really about attacking it that way is also an option. -- You received this bug notification because you are a member of TI OMAP Developers, which is subscribed to linaro-landing-team-ti. https://bugs.launchpad.net/bugs/1018141 Title: lockdep warning during boot with tilt-3.4 Status in Linaro Texas Instruments Landing Team: Confirmed Status in Linaro Ubuntu Evaluation Builds: Confirmed Bug description: [ 1.726135] ------------[ cut here ]------------ [ 1.731018] WARNING: at /build/buildd/linux-linaro-lt-omap-3.4-3.4.0/kernel/lockdep.c:2739 lockdep_trace_alloc+0x29/0x34() [ 1.742492] Modules linked in: [ 1.745758] [<c0011011>] (unwind_backtrace+0x1/0x90) from [<c002b409>] (warn_slowpath_common+0x39/0x50) [ 1.755554] [<c002b409>] (warn_slowpath_common+0x39/0x50) from [<c002b435>] (warn_slowpath_null+0x15/0x16) [ 1.765594] [<c002b435>] (warn_slowpath_null+0x15/0x16) from [<c005ce89>] (lockdep_trace_alloc+0x29/0x34) [ 1.775573] [<c005ce89>] (lockdep_trace_alloc+0x29/0x34) from [<c00b8231>] (kmem_cache_alloc_trace+0x21/0x100) [ 1.785980] [<c00b8231>] (kmem_cache_alloc_trace+0x21/0x100) from [<c0023011>] (omap2_dpll_round_rate+0xfd/0x138) [ 1.796691] [<c0023011>] (omap2_dpll_round_rate+0xfd/0x138) from [<c0024417>] (omap4460_mpu_dpll_round_rate+0x17/0x22) [ 1.807800] [<c0024417>] (omap4460_mpu_dpll_round_rate+0x17/0x22) from [<c0022bcd>] (omap2_clk_round_rate+0xf/0x14) [ 1.818664] [<c0022bcd>] (omap2_clk_round_rate+0xf/0x14) from [<c0025877>] (clk_round_rate+0x33/0x54) [ 1.828277] [<c0025877>] (clk_round_rate+0x33/0x54) from [<c071a0e1>] (omap_init_opp_table+0x69/0x128) [ 1.837982] [<c071a0e1>] (omap_init_opp_table+0x69/0x128) from [<c071a21b>] (omap4_opp_init+0x37/0x74) [ 1.847686] [<c071a21b>] (omap4_opp_init+0x37/0x74) from [<c00085f5>] (do_one_initcall+0x69/0xf4) [ 1.856933] [<c00085f5>] (do_one_initcall+0x69/0xf4) from [<c0711683>] (do_basic_setup+0x6b/0x90) [ 1.866180] [<c0711683>] (do_basic_setup+0x6b/0x90) from [<c07116f7>] (kernel_init+0x4f/0xb8) [ 1.875061] [<c07116f7>] (kernel_init+0x4f/0xb8) from [<c000cbfd>] (kernel_thread_exit+0x1/0x6) [ 1.884155] ---[ end trace 0da3e76b87a358c1 ]--- Using kernel: linux-linaro-lt-omap-3.4 (3.4.0-1.1~120625232503) precise; urgency=low-lt-omap/ch * Packaged version of lt-omap kernel created from: Kernel: Repo: git://git.linaro.org/landing-teams/working/ti/kernel.git Branch: tilt-3.4 Head: commit 61abde21bf6272908466e2d13acd479743b4f0b3 Author: Jaswinder Singh <jaswinder.singh.org> Date: Fri Jun 22 11:26:22 2012 +0800 omapdss temp hack ignore resume runtime_pm fail Signed-off-by: Jaswinder Singh <jaswinder.singh.org> Board config fragment: Repo: git://git.linaro.org/kernel/configs.git Branch: config-boards-3.4 Head: commit b7274f7e11c782039d94a6662c823e339c21dd50 Author: Ricardo Salveti de Araujo <ricardo.salveti.org> Date: Mon Jun 25 15:30:04 2012 -0300 configs: omap4: disabling CPU_IDLE due bug 971091 Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti.org> Ubuntu and Linaro Base config fragments: Repo: git://git.linaro.org/kernel/configs.git Branch: config-core-3.4 Head: commit 072bd6cb29aa25a3fe0f6be08af48f5a58eae849 Author: Ricardo Salveti de Araujo <ricardo.salveti.org> Date: Mon Jun 25 18:06:06 2012 -0300 configs: ubuntu: disabling CGROUPS as default Not yet stable enough to be used as default for all boards we currently support at Linaro. Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti.org> Packaging template: Repo: git://git.linaro.org/ubuntu/linux-linaro-quantal.git Branch: linaro-ubuntu-packaging-3.4 Head: commit 3da2b9971c9fbd9d039bf902ee8d31fdc8cc16f2 Author: John Rigby <john.rigby.org> Date: Mon Jun 25 15:04:23 2012 -0600 LINARO: template debian.linaro based on omap only version Signed-off-by: John Rigby <john.rigby.org> -- John Rigby <[email protected]> Mon, 25 Jun 2012 15:04:22 -0600 To manage notifications about this bug go to: https://bugs.launchpad.net/linaro-landing-team-ti/+bug/1018141/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~tiomap-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~tiomap-dev More help : https://help.launchpad.net/ListHelp
