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Wed, 18 Oct 2023 16:38:25 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3140F20040; Wed, 18 Oct 2023 16:38:22 +0000 (GMT) Received: from sapthagiri.in.ibm.com (unknown [9.43.47.66]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 18 Oct 2023 16:38:21 +0000 (GMT) From: Srikar Dronamraju To: Michael Ellerman Subject: [PATCH v2 5/6] powerpc/smp: Add read_mostly attribute Date: Wed, 18 Oct 2023 22:07:45 +0530 Message-ID: <20231018163751.2423181-6-srikar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018163751.2423181-1-srikar@linux.vnet.ibm.com> References: <20231018163751.2423181-1-srikar@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: aEAxBG_TAP_K-fj3Z0VDeCVz5gkG5Slc X-Proofpoint-GUID: SYibiaOliV8cKZtevOTiW_ap_E5nL3tY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-18_15,2023-10-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 mlxscore=0 malwarescore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 mlxlogscore=999 impostorscore=0 suspectscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310180135 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Valentin Schneider , Srikar Dronamraju , Peter Zijlstra , "ndesaulniers@google.com" , linux-kernel@vger.kernel.org, Rohan McLure , Nicholas Piggin , linuxppc-dev , Josh Poimboeuf Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" There are some variables that are only updated at boot time. So add read_mostly attribute to such variables Signed-off-by: Srikar Dronamraju --- arch/powerpc/kernel/smp.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 29da9262cb17..b1eb11a66902 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -77,10 +77,10 @@ static DEFINE_PER_CPU(int, cpu_state) = { 0 }; #endif struct task_struct *secondary_current; -bool has_big_cores; -bool coregroup_enabled; -bool thread_group_shares_l2; -bool thread_group_shares_l3; +bool has_big_cores __read_mostly; +bool coregroup_enabled __read_mostly; +bool thread_group_shares_l2 __read_mostly; +bool thread_group_shares_l3 __read_mostly; DEFINE_PER_CPU(cpumask_var_t, cpu_sibling_map); DEFINE_PER_CPU(cpumask_var_t, cpu_smallcore_map); @@ -987,7 +987,7 @@ static int __init init_thread_group_cache_map(int cpu, int cache_property) return 0; } -static bool shared_caches; +static bool shared_caches __read_mostly; DEFINE_STATIC_KEY_FALSE(powerpc_asym_packing); #ifdef CONFIG_SCHED_SMT