Changes in Kconfig

67f8bc848ee31831336bd478e57d2f993551902e - Merge drm/drm-fixes into drm-misc-fixes

Tue, 01 Sep 2026 09:38:51 +0200

Merge drm/drm-fixes into drm-misc-fixesLet's start the 7.3 drm-misc-fixes cycle.Signed-off-by: Maxime Ripard List of files: /linux/kernel/rcu/Kconfig

83684c4e4d62cb02b2e4d0d18963d1035439278e - Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Mon, 24 Aug 2026 03:00:22 +0200

Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linuxPull RCU updates from Paul McKenney: "Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: - Improve diagnostic output with character task states - Mark accesses to inform KCSAN of concurrency design - Move from kmalloc() to kmalloc_obj() - Documentation updates - Improve handling of RCU deferred quiescent states - Clean up unused function arguments and structure fields - Reduce show_rcu_gp_kthreads() stack space Tasks RCU updates: - Clean up after SRCU re-implementation of Tasks Trace RCU - Mark accesses to inform KCSAN of concurrency design - Add ->lazy_timer status to diagnostic output - Remove an unnecessary memory barrier - Fix a data race, courtesy of KCSAN - Documentation updates - Convert cond_resched_tasks_rcu_qs() from macro to static inline function SRCU updates: - Add Rust helpers for SRCU - Avoid losing queued work at cleanup_srcu_struct() time Torture-test updates: - Preparation work for immediate RCU priority deboosting - Test RCU readers from real interrupt handlers (as opposed to softirq) - Simplify code through use of cpumask_next_wrap() - Improve diagnostic output with character task states - Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier - Test an RCU Tasks Trace grace period implying an RCU grace period - Make RCU Tasks Trace torturing track reader batches - Fix a data race, courtesy of KCSAN - Plug a shuffle_tmp_mask memory leak on kthread spawn failure"* tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits) rcu: Add closing parenthesis in comment in rcu_read_unlock_strict() rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing rcutorture: Announce declining to forward-progress test torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[] rcutorture: Make RCU Tasks Trace track Reader Batches rcutorture: Test RCU Tasks Trace GP implying RCU GP rcutorture: Add a stall_only module parameter rcutorture: Add nwriters module parameter rcutorture: Use task_state_to_char() for task-state reporting rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt() rcutorture: Test RCU readers from hardware interrupt handlers rcutorture: Check for immediate deboosting at reader end srcu: Queue sdp->work when the delay timer is successfully deleted rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude() rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s rcu: Reduce stack usage in show_rcu_gp_kthreads() rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs ... List of files: /linux/kernel/rcu/Kconfig

9cc63f8bcd560c760d0b12e15bba8f81c86237cf - Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD

Sat, 15 Aug 2026 00:43:51 +0200

Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEADChanges:Make expedited grace periods expedite normal RCU callbacksMiscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space.Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function.SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time.Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. List of files: /linux/kernel/rcu/Kconfig

ade2e3c3aede458c8ffed62ef0320aeb60a53a92 - rcu-tasks: TASKS_TRACE_RCU doesn't need IRQ_WORK

Fri, 08 May 2026 01:00:18 +0200

rcu-tasks: TASKS_TRACE_RCU doesn't need IRQ_WORKNow that Tasks Trace RCU is implemented in terms of SRCU, it no longerhas any particular need for the IRQ_WORK Kconfig option. This committherefore removes the "select IRQ_WORK" from the TASKS_TRACE_RCU Kconfigoption.Signed-off-by: Paul E. McKenney List of files: /linux/kernel/rcu/Kconfig

5c8cbca290acdd49a694b36c0af76ba0c00bbf12 - Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD

Thu, 21 May 2026 22:36:50 +0200

Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEADMerge the branch with the soc/qcom changes, required for the next UBWCpatches.Signed-off-by: Dmitry Baryshkov List of files: /linux/kernel/rcu/Kconfig

8edf8b09fc44990977b3fbcb708035b1740d0b7e - Merge drm/drm-next into drm-intel-gt-next

Tue, 12 May 2026 10:16:35 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerging to pull in commit 5401b9adebc9 ("i915: don't usea vma that didn't match the context VM") to revert it.Signed-off-by: Joonas Lahtinen List of files: /linux/kernel/rcu/Kconfig

1655f6895a896eb632ca8a019259bc5d358a9712 - Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource

Sun, 12 Apr 2026 22:33:39 +0200

Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource - Added the DT bindings for the compatible string 'fsl,imx25-epit' (Frank Li) - Made the rttm_cs variable static for the rtl otto timer driver (Krzysztof Kozlowski) - Fixed error return code handling in the sun5i timer driver (Chen Ni) - Made the timer-of and the mmio code compatible with modules (Daniel Lezcano)Link: https://lore.kernel.org/151feae1-39ba-4abd-a9f9-9bff377a2cd8@oss.qualcomm.com List of files: /linux/kernel/rcu/Kconfig

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/kernel/rcu/Kconfig

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/kernel/rcu/Kconfig

42d3b66d4cdbacfc9d120d2301b8de89cc29a914 - Merge drm/drm-next into drm-xe-next

Thu, 12 Mar 2026 15:17:56 +0100

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THPsupport.Signed-off-by: Matthew Brost List of files: /linux/kernel/rcu/Kconfig

f09812b85fa6f41058bcc46e70ac406bf9b0493a - Merge drm/drm-next into drm-intel-next

Wed, 25 Feb 2026 12:23:04 +0100

Merge drm/drm-next into drm-intel-nextSync with v7.0-rc1 which contains a few treewide changes affecting i915.Signed-off-by: Jani Nikula List of files: /linux/kernel/rcu/Kconfig

8b85987d3cf50178f67618122d9f3bb202f62f42 - Merge drm/drm-next into drm-misc-next

Mon, 23 Feb 2026 11:48:20 +0100

Merge drm/drm-next into drm-misc-nextLet's merge 7.0-rc1 to start the new drm-misc-next windowSigned-off-by: Maxime Ripard List of files: /linux/kernel/rcu/Kconfig

c17ee635fd3a482b2ad2bf5e269755c2eae5f25e - Merge drm/drm-fixes into drm-misc-fixes

Mon, 23 Feb 2026 10:09:45 +0100

Merge drm/drm-fixes into drm-misc-fixes7.0-rc1 was just released, let's merge it to kick the new release cycle.Signed-off-by: Maxime Ripard List of files: /linux/kernel/rcu/Kconfig

ef852baaf6a73551cfaa0d082477b50d842b79b8 - Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Mon, 09 Feb 2026 18:46:26 +0100

Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linuxPull RCU updates from Boqun Feng: - RCU Tasks Trace: Re-implement RCU tasks trace in term of SRCU-fast, not only more than 500 lines of code are saved because of the reimplementation, a new set of API, rcu_read_{,un}lock_tasks_trace(), becomes possible as well. Compared to the previous rcu_read_{,un}lock_trace(), the new API avoid the task_struct accesses thanks to the SRCU-fast semantics. As a result, the old rcu_read{,un}lock_trace() API is now deprecated. - RCU Torture Test: - Multiple improvements on kvm-series.sh (parallel run and progress showing metrics) - Add context checks to rcu_torture_timer() - Make config2csv.sh properly handle comments in .boot files - Include commit discription in testid.txt - Miscellaneous RCU changes: - Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early - Use suitable gfp_flags for the init_srcu_struct_nodes() - Fix rcu_read_unlock() deadloop due to softirq - Correctly compute probability to invoke ->exp_current() in rcutorture - Make expedited RCU CPU stall warnings detect stall-end races - RCU nocb: - Remove unnecessary WakeOvfIsDeferred wake path and callback overload handling - Extract nocb_defer_wakeup_cancel() helper* tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (25 commits) rcu/nocb: Extract nocb_defer_wakeup_cancel() helper rcu/nocb: Remove dead callback overload handling rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path rcu: Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early srcu: Use suitable gfp_flags for the init_srcu_struct_nodes() rcu: Fix rcu_read_unlock() deadloop due to softirq rcutorture: Correctly compute probability to invoke ->exp_current() rcu: Make expedited RCU CPU stall warnings detect stall-end races rcutorture: Add --kill-previous option to terminate previous kvm.sh runs rcutorture: Prevent concurrent kvm.sh runs on same source tree torture: Include commit discription in testid.txt torture: Make config2csv.sh properly handle comments in .boot files torture: Make kvm-series.sh give run numbers and totals torture: Make kvm-series.sh give build numbers and totals torture: Parallelize kvm-series.sh guest-OS execution rcutorture: Add context checks to rcu_torture_timer() rcutorture: Test rcu_tasks_trace_expedite_current() srcu: Create an rcu_tasks_trace_expedite_current() function checkpatch: Deprecate rcu_read_{,un}lock_trace() rcu: Update Requirements.rst for RCU Tasks Trace ... List of files: /linux/kernel/rcu/Kconfig

60908279164a1dc651b7f4685cfbfe5161a4a797 - Merge branch 'rcu-tasks-trace.20260101a'

Sun, 04 Jan 2026 11:52:53 +0100

Merge branch 'rcu-tasks-trace.20260101a'* rcu-tasks-trace.20260101a: rcutorture: Test rcu_tasks_trace_expedite_current() srcu: Create an rcu_tasks_trace_expedite_current() function checkpatch: Deprecate rcu_read_{,un}lock_trace() rcu: Update Requirements.rst for RCU Tasks Trace rcu: Add noinstr-fast rcu_read_{,un}lock_tasks_trace() APIs rcu: Move rcu_tasks_trace_srcu_struct out of #ifdef CONFIG_TASKS_RCU_GENERIC rcu: Clean up after the SRCU-fastification of RCU Tasks Trace context_tracking: Remove rcu_task_trace_heavyweight_{enter,exit}() rcu: Re-implement RCU Tasks Trace in terms of SRCU-fast List of files: /linux/kernel/rcu/Kconfig

1a72f4bb6f3eaa5af674cb10802f7064bf71d10a - rcu: Add noinstr-fast rcu_read_{,un}lock_tasks_trace() APIs

Mon, 29 Dec 2025 20:11:00 +0100

rcu: Add noinstr-fast rcu_read_{,un}lock_tasks_trace() APIsWhen expressing RCU Tasks Trace in terms of SRCU-fast, it wasnecessary to keep a nesting count and per-CPU srcu_ctr structurepointer in the task_struct structure, which is slow to access.But an alternative is to instead make rcu_read_lock_tasks_trace() andrcu_read_unlock_tasks_trace(), which match the underlying SRCU-fastsemantics, avoiding the task_struct accesses.When all callers have switched to the new API, the previousrcu_read_lock_trace() and rcu_read_unlock_trace() APIs will be removed.The rcu_read_{,un}lock_{,tasks_}trace() functions need to use smp_mb()only if invoked where RCU is not watching, that is, from locations wherea call to rcu_is_watching() would return false. In architectures thatdefine the ARCH_WANTS_NO_INSTR Kconfig option, use of noinstr and friendsensures that tracing happens only where RCU is watching, so thosearchitectures can dispense entirely with the read-side calls to smp_mb().Other architectures include these read-side calls by default, but in manyinstallations there might be either larger than average tolerance forrisk, prohibition of removing tracing on a running system, or carefulreview and approval of removing of tracing. Such installations canbuild their kernels with CONFIG_TASKS_TRACE_RCU_NO_MB=y to avoid thoseread-side calls to smp_mb(), thus accepting responsibility for run-timeremoval of tracing from code regions that RCU is not watching.Those wishing to disable read-side memory barriers for an entirearchitecture can select this TASKS_TRACE_RCU_NO_MB Kconfig option,hence the polarity.[ paulmck: Apply Peter Zijlstra feedback. ]Signed-off-by: Paul E. McKenney Cc: Andrii Nakryiko Cc: Alexei Starovoitov Cc: Peter Zijlstra Cc: bpf@vger.kernel.orgReviewed-by: Joel Fernandes Signed-off-by: Boqun Feng List of files: /linux/kernel/rcu/Kconfig

176a6aeaf1eb97b8ddf88e324fd1cbf47d52ba28 - rcu: Move rcu_tasks_trace_srcu_struct out of #ifdef CONFIG_TASKS_RCU_GENERIC

Mon, 29 Dec 2025 20:10:59 +0100

rcu: Move rcu_tasks_trace_srcu_struct out of #ifdef CONFIG_TASKS_RCU_GENERICMoving the rcu_tasks_trace_srcu_struct structure instance outfrom under the CONFIG_TASKS_RCU_GENERIC Kconfig option permitsthe CONFIG_TASKS_TRACE_RCU Kconfig option to stop enabling thisCONFIG_TASKS_RCU_GENERIC Kconfig option. This commit also thereforemakes it so.Signed-off-by: Paul E. McKenney Cc: Andrii Nakryiko Cc: Alexei Starovoitov Cc: Peter Zijlstra Cc: bpf@vger.kernel.orgReviewed-by: Joel Fernandes Signed-off-by: Boqun Feng List of files: /linux/kernel/rcu/Kconfig

a73fc3dcc60b6d7a2075e2fbdca64fd53600f855 - rcu: Clean up after the SRCU-fastification of RCU Tasks Trace

Mon, 29 Dec 2025 20:10:58 +0100

rcu: Clean up after the SRCU-fastification of RCU Tasks TraceNow that RCU Tasks Trace has been re-implemented in terms of SRCU-fast,the ->trc_ipi_to_cpu, ->trc_blkd_cpu, ->trc_blkd_node, ->trc_holdout_list,and ->trc_reader_special task_struct fields are no longer used.In addition, the rcu_tasks_trace_qs(), rcu_tasks_trace_qs_blkd(),exit_tasks_rcu_finish_trace(), and rcu_spawn_tasks_trace_kthread(),show_rcu_tasks_trace_gp_kthread(), rcu_tasks_trace_get_gp_data(),rcu_tasks_trace_torture_stats_print(), and get_rcu_tasks_trace_gp_kthread()functions and all the other functions that they invoke are no longer used.Also, the TRC_NEED_QS and TRC_NEED_QS_CHECKED CPP macros are no longer used.Neither are the rcu_tasks_trace_lazy_ms and rcu_task_ipi_delay rcupdatemodule parameters and the TASKS_TRACE_RCU_READ_MB Kconfig option.This commit therefore removes all of them.[ paulmck: Apply Alexei Starovoitov feedback. ]Signed-off-by: Paul E. McKenney Cc: Andrii Nakryiko Cc: Alexei Starovoitov Cc: Peter Zijlstra Cc: bpf@vger.kernel.orgReviewed-by: Joel Fernandes Signed-off-by: Boqun Feng List of files: /linux/kernel/rcu/Kconfig

bbfd5594756011167b8f8de9a00e0c946afda1e6 - Merge drm/drm-next into drm-intel-gt-next

Wed, 28 May 2025 09:20:17 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).Signed-off-by: Joonas Lahtinen List of files: /linux/kernel/rcu/Kconfig

db5302ae571beec635c1a96e7f72926a4e65195e - Merge drm/drm-next into drm-intel-next

Fri, 16 May 2025 09:22:36 +0200

Merge drm/drm-next into drm-intel-nextBackmerge to sync with v6.15-rc, xe, and specifically async flip changesin drm-misc.Signed-off-by: Jani Nikula List of files: /linux/kernel/rcu/Kconfig