Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andrey Ryabinin <ryabinin.a.a@gmail.com> <aryabinin@virtuozzo.com>
Andrzej Hajda <andrzej.hajda@intel.com> <a.hajda@samsung.com>
+André Almeida <andrealmeid@igalia.com> <andrealmeid@collabora.com>
Andy Adamson <andros@citi.umich.edu>
Antoine Tenart <atenart@kernel.org> <antoine.tenart@bootlin.com>
Antoine Tenart <atenart@kernel.org> <antoine.tenart@free-electrons.com>
Juha Yrjola <juha.yrjola@nokia.com>
Juha Yrjola <juha.yrjola@solidboot.com>
Julien Thierry <julien.thierry.kdev@gmail.com> <julien.thierry@arm.com>
+Kalle Valo <kvalo@kernel.org> <kvalo@codeaurora.org>
Kalyan Thota <quic_kalyant@quicinc.com> <kalyan_t@codeaurora.org>
Kay Sievers <kay.sievers@vrfy.org>
Kees Cook <keescook@chromium.org> <kees.cook@canonical.com>
Martin Kepplinger <martink@posteo.de> <martin.kepplinger@ginzinger.com>
Martin Kepplinger <martink@posteo.de> <martin.kepplinger@puri.sm>
Martin Kepplinger <martink@posteo.de> <martin.kepplinger@theobroma-systems.com>
+Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@linux.intel.com> <martyna.szapar-mudlaw@intel.com>
Mathieu Othacehe <m.othacehe@gmail.com>
Matthew Wilcox <willy@infradead.org> <matthew.r.wilcox@intel.com>
Matthew Wilcox <willy@infradead.org> <matthew@wil.cx>
Vasily Averin <vasily.averin@linux.dev> <vvs@openvz.org>
Vasily Averin <vasily.averin@linux.dev> <vvs@parallels.com>
Vasily Averin <vasily.averin@linux.dev> <vvs@sw.ru>
+ Valentin Schneider <vschneid@redhat.com> <valentin.schneider@arm.com>
Vinod Koul <vkoul@kernel.org> <vinod.koul@intel.com>
Vinod Koul <vkoul@kernel.org> <vinod.koul@linux.intel.com>
Vinod Koul <vkoul@kernel.org> <vkoul@infradead.org>
L: netdev@vger.kernel.org
S: Supported
W: http://sourceforge.net/projects/bonding/
+F: Documentation/networking/bonding.rst
F: drivers/net/bonding/
-F: include/net/bonding.h
+F: include/net/bond*
F: include/uapi/linux/if_bonding.h
BOSCH SENSORTEC BMA400 ACCELEROMETER IIO DRIVER
DATA ACCESS MONITOR
M: SeongJae Park <sj@kernel.org>
+L: damon@lists.linux.dev
L: linux-mm@kvack.org
S: Maintained
F: Documentation/ABI/testing/sysfs-kernel-mm-damon
R: Liam Mark <lmark@codeaurora.org>
R: Laura Abbott <labbott@redhat.com>
R: Brian Starkey <Brian.Starkey@arm.com>
-R: John Stultz <john.stultz@linaro.org>
+R: John Stultz <jstultz@google.com>
L: linux-media@vger.kernel.org
L: dri-devel@lists.freedesktop.org
L: linaro-mm-sig@lists.linaro.org (moderated for non-subscribers)
DRM DRIVERS FOR HISILICON
M: Xinliang Liu <xinliang.liu@linaro.org>
M: Tian Tao <tiantao6@hisilicon.com>
-R: John Stultz <john.stultz@linaro.org>
+R: John Stultz <jstultz@google.com>
R: Xinwei Kong <kong.kongxinwei@hisilicon.com>
R: Chen Feng <puck.chen@hisilicon.com>
L: dri-devel@lists.freedesktop.org
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/execve
F: arch/alpha/kernel/binfmt_loader.c
-F: arch/x86/ia32/ia32_aout.c
F: fs/*binfmt_*.c
F: fs/exec.c
F: include/linux/binfmts.h
F: drivers/hwmon/f71805f.c
FADDR2LINE
-M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Josh Poimboeuf <jpoimboe@kernel.org>
S: Maintained
F: scripts/faddr2line
R: Peter Zijlstra <peterz@infradead.org>
R: Darren Hart <dvhart@infradead.org>
R: Davidlohr Bueso <dave@stgolabs.net>
-R: André Almeida <andrealmeid@collabora.com>
+R: André Almeida <andrealmeid@igalia.com>
L: linux-kernel@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
M: Bartosz Golaszewski <brgl@bgdev.pl>
L: linux-gpio@vger.kernel.org
S: Maintained
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git
F: Documentation/ABI/obsolete/sysfs-gpio
F: Documentation/ABI/testing/gpio-cdev
F: Documentation/admin-guide/gpio/
F: drivers/net/ethernet/hisilicon/
HIKEY960 ONBOARD USB GPIO HUB DRIVER
-M: John Stultz <john.stultz@linaro.org>
+M: John Stultz <jstultz@google.com>
L: linux-kernel@vger.kernel.org
S: Maintained
F: drivers/misc/hisi_hikey_usb.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git
F: drivers/idle/intel_idle.c
+INTEL IN FIELD SCAN (IFS) DEVICE
+M: Jithu Joseph <jithu.joseph@intel.com>
+R: Ashok Raj <ashok.raj@intel.com>
+R: Tony Luck <tony.luck@intel.com>
+S: Maintained
+F: drivers/platform/x86/intel/ifs
+F: include/trace/events/intel_ifs.h
+
INTEL INTEGRATED SENSOR HUB DRIVER
M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
M: Jiri Kosina <jikos@kernel.org>
F: drivers/net/wireless/intel/iwlegacy/
INTEL WIRELESS WIFI LINK (iwlwifi)
-M: Luca Coelho <luciano.coelho@intel.com>
+M: Gregory Greenman <gregory.greenman@intel.com>
L: linux-wireless@vger.kernel.org
S: Supported
W: https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
N: litex
LIVE PATCHING
-M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Josh Poimboeuf <jpoimboe@kernel.org>
M: Jiri Kosina <jikos@kernel.org>
M: Miroslav Benes <mbenes@suse.cz>
M: Petr Mladek <pmladek@suse.com>
F: lib/test_objagg.c
OBJTOOL
-M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Josh Poimboeuf <jpoimboe@kernel.org>
M: Peter Zijlstra <peterz@infradead.org>
S: Supported
F: tools/objtool/
F: drivers/cpufreq/omap-cpufreq.c
OMAP POWERDOMAIN SOC ADAPTATION LAYER SUPPORT
-M: Rajendra Nayak <rnayak@codeaurora.org>
M: Paul Walmsley <paul@pwsan.com>
L: linux-omap@vger.kernel.org
S: Maintained
PERFORMANCE EVENTS TOOLING ARM64
R: John Garry <john.garry@huawei.com>
R: Will Deacon <will@kernel.org>
-R: Mathieu Poirier <mathieu.poirier@linaro.org>
+R: James Clark <james.clark@arm.com>
+R: Mike Leach <mike.leach@linaro.org>
R: Leo Yan <leo.yan@linaro.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Supported
R: Ben Segall <bsegall@google.com> (CONFIG_CFS_BANDWIDTH)
R: Mel Gorman <mgorman@suse.de> (CONFIG_NUMA_BALANCING)
R: Daniel Bristot de Oliveira <bristot@redhat.com> (SCHED_DEADLINE)
+ R: Valentin Schneider <vschneid@redhat.com> (TOPOLOGY)
L: linux-kernel@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
STATIC BRANCH/CALL
M: Peter Zijlstra <peterz@infradead.org>
-M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Josh Poimboeuf <jpoimboe@kernel.org>
M: Jason Baron <jbaron@akamai.com>
R: Steven Rostedt <rostedt@goodmis.org>
R: Ard Biesheuvel <ardb@kernel.org>
F: include/linux/wl12xx.h
TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER
-M: John Stultz <john.stultz@linaro.org>
+M: John Stultz <jstultz@google.com>
M: Thomas Gleixner <tglx@linutronix.de>
R: Stephen Boyd <sboyd@kernel.org>
L: linux-kernel@vger.kernel.org
F: arch/x86/platform/uv/
X86 STACK UNWINDING
-M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Josh Poimboeuf <jpoimboe@kernel.org>
M: Peter Zijlstra <peterz@infradead.org>
S: Supported
F: arch/x86/include/asm/unwind*.h
extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
-/*
- * On lockdep we dont want to enable hardirqs in hardirq
- * context. Use local_irq_enable_in_hardirq() to annotate
- * kernel code that has to do this nevertheless (pretty much
- * the only valid case is for old/broken hardware that is
- * insanely slow).
- *
- * NOTE: in theory this might break fragile code that relies
- * on hardirq delivery - in practice we dont seem to have such
- * places left. So the only effect should be slightly increased
- * irqs-off latencies.
- */
-#ifdef CONFIG_LOCKDEP
-# define local_irq_enable_in_hardirq() do { } while (0)
-#else
-# define local_irq_enable_in_hardirq() local_irq_enable()
-#endif
-
bool irq_has_action(unsigned int irq);
extern void disable_irq_nosync(unsigned int irq);
extern bool disable_hardirq(unsigned int irq);
asmlinkage void do_softirq(void);
asmlinkage void __do_softirq(void);
+ #ifdef CONFIG_PREEMPT_RT
+ extern void do_softirq_post_smp_call_flush(unsigned int was_pending);
+ #else
+ static inline void do_softirq_post_smp_call_flush(unsigned int unused)
+ {
+ do_softirq();
+ }
+ #endif
+
extern void open_softirq(int nr, void (*action)(struct softirq_action *));
extern void softirq_init(void);
extern void __raise_softirq_irqoff(unsigned int nr);
#ifdef CONFIG_IOMMU_SVA
unsigned pasid_activated:1;
#endif
+#ifdef CONFIG_CPU_SUP_INTEL
+ unsigned reported_split_lock:1;
+#endif
unsigned long atomic_flags; /* Flags requiring atomic access. */
#endif
- const struct sched_avg *sched_trace_cfs_rq_avg(struct cfs_rq *cfs_rq);
- char *sched_trace_cfs_rq_path(struct cfs_rq *cfs_rq, char *str, int len);
- int sched_trace_cfs_rq_cpu(struct cfs_rq *cfs_rq);
-
- const struct sched_avg *sched_trace_rq_avg_rt(struct rq *rq);
- const struct sched_avg *sched_trace_rq_avg_dl(struct rq *rq);
- const struct sched_avg *sched_trace_rq_avg_irq(struct rq *rq);
-
- int sched_trace_rq_cpu(struct rq *rq);
- int sched_trace_rq_cpu_capacity(struct rq *rq);
- int sched_trace_rq_nr_running(struct rq *rq);
-
- const struct cpumask *sched_trace_rd_span(struct root_domain *rd);
-
#ifdef CONFIG_SCHED_CORE
extern void sched_core_free(struct task_struct *tsk);
extern void sched_core_fork(struct task_struct *p);
static inline void sched_core_fork(struct task_struct *p) { }
#endif
+ extern void sched_set_stop_task(int cpu, struct task_struct *stop);
+
#endif
#include <linux/topology.h>
#include <linux/sched/clock.h>
#include <linux/sched/cond_resched.h>
+ #include <linux/sched/cputime.h>
#include <linux/sched/debug.h>
+ #include <linux/sched/hotplug.h>
+ #include <linux/sched/init.h>
#include <linux/sched/isolation.h>
#include <linux/sched/loadavg.h>
#include <linux/sched/mm.h>
swap(rq1, rq2);
raw_spin_rq_lock(rq1);
- if (__rq_lockp(rq1) == __rq_lockp(rq2))
- return;
+ if (__rq_lockp(rq1) != __rq_lockp(rq2))
+ raw_spin_rq_lock_nested(rq2, SINGLE_DEPTH_NESTING);
- raw_spin_rq_lock_nested(rq2, SINGLE_DEPTH_NESTING);
+ double_rq_clock_clear_update(rq1, rq2);
}
#endif
{
if (p->sched_class == rq->curr->sched_class)
rq->curr->sched_class->check_preempt_curr(rq, p, flags);
- else if (p->sched_class > rq->curr->sched_class)
+ else if (sched_class_above(p->sched_class, rq->curr->sched_class))
resched_curr(rq);
/*
* __migrate_task() such that we will not miss enforcing cpus_ptr
* during wakeups, see set_cpus_allowed_ptr()'s TASK_WAKING test.
*/
- flush_smp_call_function_from_idle();
+ flush_smp_call_function_queue();
raw_spin_lock(&p->pi_lock);
rq_lock(rq, &rf);
* higher scheduling class, because otherwise those lose the
* opportunity to pull in more work from other CPUs.
*/
- if (likely(prev->sched_class <= &fair_sched_class &&
+ if (likely(!sched_class_above(prev->sched_class, &fair_sched_class) &&
rq->nr_running == rq->cfs.h_nr_running)) {
p = pick_next_task_fair(rq, prev, rf);
migrate_disable_switch(rq, prev);
psi_sched_switch(prev, next, !task_on_rq_queued(prev));
- trace_sched_switch(sched_mode & SM_MASK_PREEMPT, prev_state, prev, next);
+ trace_sched_switch(sched_mode & SM_MASK_PREEMPT, prev, next, prev_state);
/* Also unlocks the rq: */
rq = context_switch(rq, prev, next, &rf);
int i;
/* Make sure the linker didn't screw up */
- BUG_ON(&idle_sched_class + 1 != &fair_sched_class ||
- &fair_sched_class + 1 != &rt_sched_class ||
- &rt_sched_class + 1 != &dl_sched_class);
+ BUG_ON(&idle_sched_class != &fair_sched_class + 1 ||
+ &fair_sched_class != &rt_sched_class + 1 ||
+ &rt_sched_class != &dl_sched_class + 1);
#ifdef CONFIG_SMP
- BUG_ON(&dl_sched_class + 1 != &stop_sched_class);
+ BUG_ON(&dl_sched_class != &stop_sched_class + 1);
#endif
wait_bit_init();
* last -- this is very similar to the entry code.
*/
trace_hardirqs_on_prepare();
- lockdep_hardirqs_on_prepare(_THIS_IP_);
+ lockdep_hardirqs_on_prepare();
rcu_idle_enter();
lockdep_hardirqs_on(_THIS_IP_);
* RCU relies on this call to be done outside of an RCU read-side
* critical section.
*/
- flush_smp_call_function_from_idle();
+ flush_smp_call_function_queue();
schedule_idle();
if (unlikely(klp_patch_pending(current)))
static DEFINE_PER_CPU_SHARED_ALIGNED(struct llist_head, call_single_queue);
- static void flush_smp_call_function_queue(bool warn_cpu_offline);
+ static void __flush_smp_call_function_queue(bool warn_cpu_offline);
int smpcfd_prepare_cpu(unsigned int cpu)
{
* ensure that the outgoing CPU doesn't go offline with work
* still pending.
*/
- flush_smp_call_function_queue(false);
+ __flush_smp_call_function_queue(false);
irq_work_run();
return 0;
}
static DEFINE_PER_CPU(void *, cur_csd_info);
static DEFINE_PER_CPU(struct cfd_seq_local, cfd_seq_local);
-#define CSD_LOCK_TIMEOUT (5ULL * NSEC_PER_SEC)
+static ulong csd_lock_timeout = 5000; /* CSD lock timeout in milliseconds. */
+module_param(csd_lock_timeout, ulong, 0444);
+
static atomic_t csd_bug_count = ATOMIC_INIT(0);
static u64 cfd_seq;
u64 ts2, ts_delta;
call_single_data_t *cpu_cur_csd;
unsigned int flags = READ_ONCE(csd->node.u_flags);
+ unsigned long long csd_lock_timeout_ns = csd_lock_timeout * NSEC_PER_MSEC;
if (!(flags & CSD_FLAG_LOCK)) {
if (!unlikely(*bug_id))
ts2 = sched_clock();
ts_delta = ts2 - *ts1;
- if (likely(ts_delta <= CSD_LOCK_TIMEOUT))
+ if (likely(ts_delta <= csd_lock_timeout_ns || csd_lock_timeout_ns == 0))
return false;
firsttime = !*bug_id;
{
cfd_seq_store(this_cpu_ptr(&cfd_seq_local)->gotipi, CFD_SEQ_NOCPU,
smp_processor_id(), CFD_SEQ_GOTIPI);
- flush_smp_call_function_queue(true);
+ __flush_smp_call_function_queue(true);
}
/**
- * flush_smp_call_function_queue - Flush pending smp-call-function callbacks
+ * __flush_smp_call_function_queue - Flush pending smp-call-function callbacks
*
* @warn_cpu_offline: If set to 'true', warn if callbacks were queued on an
* offline CPU. Skip this check if set to 'false'.
* Loop through the call_single_queue and run all the queued callbacks.
* Must be called with interrupts disabled.
*/
- static void flush_smp_call_function_queue(bool warn_cpu_offline)
+ static void __flush_smp_call_function_queue(bool warn_cpu_offline)
{
call_single_data_t *csd, *csd_next;
struct llist_node *entry, *prev;
smp_processor_id(), CFD_SEQ_HDLEND);
}
- void flush_smp_call_function_from_idle(void)
+
+ /**
+ * flush_smp_call_function_queue - Flush pending smp-call-function callbacks
+ * from task context (idle, migration thread)
+ *
+ * When TIF_POLLING_NRFLAG is supported and a CPU is in idle and has it
+ * set, then remote CPUs can avoid sending IPIs and wake the idle CPU by
+ * setting TIF_NEED_RESCHED. The idle task on the woken up CPU has to
+ * handle queued SMP function calls before scheduling.
+ *
+ * The migration thread has to ensure that an eventually pending wakeup has
+ * been handled before it migrates a task.
+ */
+ void flush_smp_call_function_queue(void)
{
+ unsigned int was_pending;
unsigned long flags;
if (llist_empty(this_cpu_ptr(&call_single_queue)))
cfd_seq_store(this_cpu_ptr(&cfd_seq_local)->idle, CFD_SEQ_NOCPU,
smp_processor_id(), CFD_SEQ_IDLE);
local_irq_save(flags);
- flush_smp_call_function_queue(true);
+ /* Get the already pending soft interrupts for RT enabled kernels */
+ was_pending = local_softirq_pending();
+ __flush_smp_call_function_queue(true);
if (local_softirq_pending())
- do_softirq();
+ do_softirq_post_smp_call_flush(was_pending);
local_irq_restore(flags);
}
kthread_park(stopper->thread);
}
- extern void sched_set_stop_task(int cpu, struct task_struct *stop);
-
static void cpu_stop_create(unsigned int cpu)
{
sched_set_stop_task(cpu, per_cpu(cpu_stopper.thread, cpu));
}
EXPORT_SYMBOL_GPL(stop_machine);
+#ifdef CONFIG_SCHED_SMT
+int stop_core_cpuslocked(unsigned int cpu, cpu_stop_fn_t fn, void *data)
+{
+ const struct cpumask *smt_mask = cpu_smt_mask(cpu);
+
+ struct multi_stop_data msdata = {
+ .fn = fn,
+ .data = data,
+ .num_threads = cpumask_weight(smt_mask),
+ .active_cpus = smt_mask,
+ };
+
+ lockdep_assert_cpus_held();
+
+ /* Set the initial state and stop all online cpus. */
+ set_state(&msdata, MULTI_STOP_PREPARE);
+ return stop_cpus(smt_mask, multi_cpu_stop, &msdata);
+}
+EXPORT_SYMBOL_GPL(stop_core_cpuslocked);
+#endif
+
/**
* stop_machine_from_inactive_cpu - stop_machine() from inactive CPU
* @fn: the function to run
projects / linux-2.6-microblaze.git / commitdiff