From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1185130EF92 for ; Fri, 11 Sep 2026 20:46:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789159573; cv=none; b=DFAOZzg6biY7RqO21DXtL/jw+PSYPgl4kzD4s4ovw9QRNPRfV65Mj3gtZdNMJw4Ny+RY/irMHtZgcQgRv9ZYMKfGF2BrzHwQ6+dIl7jQwi1SNgN0BuFnfBjGf575NpLNGZ2yNMINyFIBS7SxWW509FjAKRGGk278ykWkQ6+Uduw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789159573; c=relaxed/simple; bh=TT31i/fvUvTxHsWhpTQxj3jthDXVh6uvrE98k1zovWs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=IEILBZZzc3g8WN8qJ5g43ngRPdrucLW91A45JR8TK1L8SrmlLGt4k0Jd8MlrgKKcTllqcxQmAtsJ8Vq6x7q9GyWV7xdBvm5XT+RVKML1dxTBcHS2Qzq5ZjSxZbZF3PquxhXwdO3k+rCbTOWV9+UzFd7gD8iGSW3P6+aNyUPqZVM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hYvmOzL3; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hYvmOzL3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789159571; x=1820695571; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=TT31i/fvUvTxHsWhpTQxj3jthDXVh6uvrE98k1zovWs=; b=hYvmOzL3+qM3hRuSKCxr6RTJ+g/wt8JAGtxHzB9l10aF4efdBRkmXp/z BwuVEFZma0IpO1RHWJu1Bpf6u6qZRRWY1ez4ptcEoenK4YhIyIIyBvY3H kE6rieIVaX9puN70rudcABEMr8HVFS5CHedPKEeBmBHGs2iRNm9mCY6Oc dfDnsd0tCM/oWBpbC8+KkjkyqYACI8KMaJGJ3LAq5Z2inhxtmk49stx/H i9m+B+5ZBqOdmSMgE5VYTnojS8RZEmoYxhxl1PWGKfRrbM8c4r2L8myYS HdxbE0blTWiZl28AKiHAy4cVI4ISZIaLWjuEONggBJj/5ZihCEsmAxVgh Q==; X-CSE-ConnectionGUID: voniGWSmRBWN889taJ+gOA== X-CSE-MsgGUID: dA0IKub3QWCRqPv2AJmuKQ== X-IronPort-AV: E=McAfee;i="6800,10657,11902"; a="88767537" X-IronPort-AV: E=Sophos;i="6.27,97,1787036400"; d="scan'208";a="88767537" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2026 13:46:10 -0700 X-CSE-ConnectionGUID: QGr2N0ITQXydgeip/Nh1/A== X-CSE-MsgGUID: cdp0ojVbTHObEi/ZhFv5nQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,97,1787036400"; d="scan'208";a="295510660" Received: from lkp-server02.sh.intel.com (HELO 0a3643a6ed9d) ([10.239.97.151]) by fmviesa002.fm.intel.com with ESMTP; 11 Sep 2026 13:46:05 -0700 Received: from kbuild by 0a3643a6ed9d with local (Exim 4.98.2) (envelope-from ) id 1x588I-0000000029J-1mH8; Fri, 11 Sep 2026 20:46:02 +0000 Date: Sat, 12 Sep 2026 04:45:18 +0800 From: kernel test robot To: Aaron Tomlin , akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org Cc: oe-kbuild-all@lists.linux.dev, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, feng.tang@linux.alibaba.com, pmladek@suse.com, kprateek.nayak@amd.com, atomlin@atomlin.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] sched/debug, sys_info: Introduce SYS_INFO_CPU_RUNQUEUES Message-ID: <202609120421.J3jtss6v-lkp@intel.com> References: <20260911022844.521413-1-atomlin@atomlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260911022844.521413-1-atomlin@atomlin.com> Hi Aaron, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on tip/sched/core akpm-mm/mm-nonmm-unstable linus/master v7.3-rc2 next-20260909] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Aaron-Tomlin/sched-debug-sys_info-Introduce-SYS_INFO_CPU_RUNQUEUES/20260910-222844 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260911022844.521413-1-atomlin%40atomlin.com patch subject: [PATCH] sched/debug, sys_info: Introduce SYS_INFO_CPU_RUNQUEUES config: microblaze-randconfig-r132-20260911 (https://download.01.org/0day-ci/archive/20260912/202609120421.J3jtss6v-lkp@intel.com/config) compiler: microblaze-linux-gcc (GCC) 8.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260912/202609120421.J3jtss6v-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202609120421.J3jtss6v-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/sched/build_utility.c: note: in included file: kernel/sched/debug.c:868:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/debug.c:868:17: sparse: expected struct sched_domain *[assigned] sd kernel/sched/debug.c:868:17: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/debug.c:1220:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/debug.c:1220:9: sparse: expected struct task_struct *tsk kernel/sched/debug.c:1220:9: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/debug.c:1220:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/debug.c:1220:9: sparse: expected struct task_struct *tsk kernel/sched/debug.c:1220:9: sparse: got struct task_struct [noderef] __rcu *curr >> kernel/sched/debug.c:1355:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/debug.c:1355:30: sparse: expected struct task_struct *curr kernel/sched/debug.c:1355:30: sparse: got struct task_struct [noderef] __rcu *curr >> kernel/sched/debug.c:1360:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/debug.c:1360:30: sparse: expected struct task_struct *curr kernel/sched/debug.c:1360:30: sparse: got struct task_struct [noderef] __rcu * kernel/sched/build_utility.c: note: in included file: kernel/sched/topology.c:118:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:118:56: sparse: expected struct sched_domain *sd kernel/sched/topology.c:118:56: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:137:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:137:60: sparse: expected struct sched_domain *sd kernel/sched/topology.c:137:60: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:160:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:160:20: sparse: expected struct sched_domain *sd kernel/sched/topology.c:160:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:470:19: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct perf_domain *pd @@ got struct perf_domain [noderef] __rcu *pd @@ kernel/sched/topology.c:470:19: sparse: expected struct perf_domain *pd kernel/sched/topology.c:470:19: sparse: got struct perf_domain [noderef] __rcu *pd kernel/sched/topology.c:654:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:654:49: sparse: expected struct sched_domain *parent kernel/sched/topology.c:654:49: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:753:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:753:50: sparse: expected struct sched_domain *parent kernel/sched/topology.c:753:50: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:775:55: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain [noderef] __rcu *[noderef] __rcu child @@ got struct sched_domain *[assigned] tmp @@ kernel/sched/topology.c:775:55: sparse: expected struct sched_domain [noderef] __rcu *[noderef] __rcu child kernel/sched/topology.c:775:55: sparse: got struct sched_domain *[assigned] tmp kernel/sched/topology.c:788:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:788:29: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/topology.c:788:29: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:793:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:793:20: sparse: expected struct sched_domain *sd kernel/sched/topology.c:793:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:826:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *sd @@ kernel/sched/topology.c:826:13: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/topology.c:826:13: sparse: got struct sched_domain [noderef] __rcu *sd kernel/sched/topology.c:1069:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *sdp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:1069:38: sparse: expected struct sched_domain *sdp kernel/sched/topology.c:1069:38: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:1076:21: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sdp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:1076:21: sparse: expected struct sched_domain *sdp kernel/sched/topology.c:1076:21: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:1223:70: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1223:70: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1223:70: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1252:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1252:59: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1252:59: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1298:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1298:57: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1298:57: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1300:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sibling @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1300:25: sparse: expected struct sched_domain *sibling kernel/sched/topology.c:1300:25: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1308:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1308:55: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1308:55: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1310:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sibling @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1310:25: sparse: expected struct sched_domain *sibling kernel/sched/topology.c:1310:25: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1380:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1380:62: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1380:62: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1484:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1484:40: sparse: expected struct sched_domain *child kernel/sched/topology.c:1484:40: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1620:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:1620:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:1620:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:1877:52: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:1877:52: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:1877:52: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:1987:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain [noderef] __rcu *child @@ got struct sched_domain *child @@ kernel/sched/topology.c:1987:43: sparse: expected struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1987:43: sparse: got struct sched_domain *child kernel/sched/topology.c:2791:31: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain [noderef] __rcu *parent @@ got struct sched_domain *sd @@ kernel/sched/topology.c:2791:31: sparse: expected struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2791:31: sparse: got struct sched_domain *sd kernel/sched/topology.c:2919:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *[noderef] __rcu parent @@ kernel/sched/topology.c:2919:16: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2919:16: sparse: got struct sched_domain [noderef] __rcu *[noderef] __rcu parent kernel/sched/topology.c:2921:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2921:24: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2921:24: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2926:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2926:16: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2926:16: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2931:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2931:24: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2931:24: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:3008:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd_asym @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:3008:25: sparse: expected struct sched_domain *[assigned] sd_asym kernel/sched/topology.c:3008:25: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:3143:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:3143:57: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:3143:57: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:3165:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:3165:28: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:3165:28: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:3191:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:3191:57: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:3191:57: sparse: got struct sched_domain [noderef] __rcu *parent vim +1355 kernel/sched/debug.c 1212 1213 #define PN(x) \ 1214 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x)) 1215 1216 P(nr_running); 1217 P(nr_switches); 1218 P(nr_uninterruptible); 1219 PN(next_balance); > 1220 SEQ_printf(m, " .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr))); 1221 PN(clock); 1222 PN(clock_task); 1223 #undef P 1224 #undef PN 1225 1226 #define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n); 1227 P64(avg_idle); 1228 P64(max_idle_balance_cost); 1229 #undef P64 1230 1231 #define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, schedstat_val(rq->n)); 1232 if (schedstat_enabled()) { 1233 P(yld_count); 1234 P(sched_count); 1235 P(sched_goidle); 1236 P(ttwu_count); 1237 P(ttwu_local); 1238 } 1239 #undef P 1240 1241 print_cfs_stats(m, cpu); 1242 print_rt_stats(m, cpu); 1243 print_dl_stats(m, cpu); 1244 1245 print_rq(m, rq, cpu, true, false); 1246 SEQ_printf(m, "\n"); 1247 } 1248 1249 static const char *sched_tunable_scaling_names[] = { 1250 "none", 1251 "logarithmic", 1252 "linear" 1253 }; 1254 1255 static void sched_debug_header(struct seq_file *m) 1256 { 1257 u64 ktime, sched_clk, cpu_clk; 1258 unsigned long flags; 1259 1260 local_irq_save(flags); 1261 ktime = ktime_to_ns(ktime_get()); 1262 sched_clk = sched_clock(); 1263 cpu_clk = local_clock(); 1264 local_irq_restore(flags); 1265 1266 SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n", 1267 init_utsname()->release, 1268 (int)strcspn(init_utsname()->version, " "), 1269 init_utsname()->version); 1270 1271 #define P(x) \ 1272 SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x)) 1273 #define PN(x) \ 1274 SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) 1275 PN(ktime); 1276 PN(sched_clk); 1277 PN(cpu_clk); 1278 P(jiffies); 1279 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK 1280 P(sched_clock_stable()); 1281 #endif 1282 #undef PN 1283 #undef P 1284 1285 SEQ_printf(m, "\n"); 1286 SEQ_printf(m, "sysctl_sched\n"); 1287 1288 #define P(x) \ 1289 SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x)) 1290 #define PN(x) \ 1291 SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) 1292 PN(sysctl_sched_base_slice); 1293 P(sysctl_sched_features); 1294 #undef PN 1295 #undef P 1296 1297 SEQ_printf(m, " .%-40s: %d (%s)\n", 1298 "sysctl_sched_tunable_scaling", 1299 sysctl_sched_tunable_scaling, 1300 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]); 1301 SEQ_printf(m, "\n"); 1302 } 1303 1304 static int sched_debug_show(struct seq_file *m, void *v) 1305 { 1306 int cpu = (unsigned long)(v - 2); 1307 1308 if (cpu != -1) 1309 print_cpu(m, cpu); 1310 else 1311 sched_debug_header(m); 1312 1313 return 0; 1314 } 1315 1316 void sysrq_sched_debug_show(void) 1317 { 1318 int cpu; 1319 1320 sched_debug_header(NULL); 1321 for_each_online_cpu(cpu) { 1322 /* 1323 * Need to reset softlockup watchdogs on all CPUs, because 1324 * another CPU might be blocked waiting for us to process 1325 * an IPI or stop_machine. 1326 */ 1327 touch_nmi_watchdog(); 1328 touch_all_softlockup_watchdogs(); 1329 print_cpu(NULL, cpu); 1330 } 1331 } 1332 1333 void sched_show_runqueues(void) 1334 { 1335 int cpu; 1336 1337 pr_info("CPU Runqueues:\n"); 1338 for_each_online_cpu(cpu) { 1339 struct rq *rq = cpu_rq(cpu); 1340 struct task_struct *curr; 1341 unsigned int nr_running; 1342 u64 nr_switches; 1343 unsigned long flags; 1344 bool locked; 1345 1346 touch_nmi_watchdog(); 1347 touch_all_softlockup_watchdogs(); 1348 1349 rcu_read_lock(); 1350 local_irq_save(flags); 1351 locked = raw_spin_rq_trylock(rq); 1352 if (locked) { 1353 nr_running = rq->nr_running; 1354 nr_switches = rq->nr_switches; > 1355 curr = rq->curr; 1356 raw_spin_rq_unlock(rq); 1357 } else { 1358 nr_running = READ_ONCE(rq->nr_running); 1359 nr_switches = READ_ONCE(rq->nr_switches); > 1360 curr = READ_ONCE(rq->curr); 1361 } 1362 local_irq_restore(flags); 1363 1364 pr_info("cpu#%d: nr_running:%u switches:%llu curr:%s[%d]%s\n", 1365 cpu, nr_running, nr_switches, 1366 curr ? curr->comm : "", 1367 curr ? task_pid_nr(curr) : -1, 1368 locked ? "" : " (contended)"); 1369 1370 print_rq(NULL, rq, cpu, false, true); 1371 rcu_read_unlock(); 1372 } 1373 } 1374 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki