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McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: [PATCH tip/core/rcu 0/52] Remove rcu_state pointers for v4.20/v5.0 Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 18082922-2213-0000-0000-000002E508C7 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009636; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01080744; UDB=6.00557497; IPR=6.00860729; MB=3.00023002; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-29 22:38:35 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18082922-2214-0000-0000-00005B602D7E Message-Id: <20180829223830.GA1800@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-29_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=856 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808290219 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This commit does RCU-consolidation cleanups that get rid of pointers to the sole remaining rcu_state structure: 1-40: Remove the "rsp" parameter from numerous functions, given that the corresponding argument will always be &rcu_state. 41. Remove rcu_data structure's ->rsp field, now that it always contains a pointer to rcu_state. 42. Remove non-flavor-traversal rsp local variable from tree_plugin.h. 43. Remove the for_each_rcu_flavor() flavor-traversal macro, given that there is now only ever one flavor to traverse. 44. Simplify rcutorture_get_gp_data() based on there now being only one rcu_state structure. 45. Restructure rcu_check_gp_kthread_starvation() based on there now being only one rcu_state structure. 46. Restructure RCU CPU stall warnings based on there now being only one rcu_state structure. 47. Restructure grace-period management code based on there now being only one rcu_state structure. 48. Restructure callback registration/invocation code based on there now being only one rcu_state structure. 49. Restructure quiescent-state and grace-period-nonstart code based on there now being only one rcu_state structure. 50. Restructure rcu_barrier() based on there now being only one rcu_state structure. 51. Restructure initialization code based on there now being only one rcu_state structure. 52. Fix typo in force_qs_rnp()'s parameter's parameter, which was located by searching for "rsp". Thanx, Paul ------------------------------------------------------------------------ Documentation/RCU/Design/Data-Structures/Data-Structures.html | 23 kernel/rcu/rcu.h | 28 kernel/rcu/srcutree.c | 4 kernel/rcu/tree.c | 1261 ++++------ kernel/rcu/tree.h | 29 kernel/rcu/tree_exp.h | 209 - kernel/rcu/tree_plugin.h | 203 - 7 files changed, 784 insertions(+), 973 deletions(-)