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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2018-11-09 15:16:00 +0100
committerSebastian Andrzej Siewior <bigeasy@linutronix.de>2018-11-09 15:16:00 +0100
commit8b797da8ae7a1073d4626f41ac28cf25c1ad8a5c (patch)
treef2aeef6fd7294f19e558c8d462db303e1752bf7a
parentd4327fbfc7d1ecc962c4450db3e6e3fdbea71717 (diff)
downloadlinux-rt-8b797da8ae7a1073d4626f41ac28cf25c1ad8a5c.tar.gz
[ANNOUNCE] v4.19.1-rt3v4.19.1-rt3-patches
Dear RT folks! I'm pleased to announce the v4.19.1-rt3 patch set. Changes since v4.19.1-rt2: - A patch to the bcm2835 pinctrl driver to use raw_spinlock_t. Patch by Lukas Wunner. - The Atmel TCB timer patch set by Alexandre Belloni has been update to v7. - The RCU Kconfig entry has been tweaked and now it is no longer required to enable RCU_EXPERT in order to enable RCU_BOOST. Suggested by Paul E. McKenney. - The crypto caam driver did not compile. Patch by Horia Geantă. - The kbuild test robot complained about various patches because they did not compile and so hurt bisectibility. As a result a few patches and hunks have been moved to avoid that. Known issues - A warning triggered in "rcu_note_context_switch" originated from SyS_timer_gettime(). The issue was always there, it is now visible. Reported by Grygorii Strashko and Daniel Wagner. The delta patch against v4.19.1-rt2 is appended below and can be found here: https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.19/incr/patch-4.19.1-rt2-rt3.patch.xz You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.19.1-rt3 The RT patch against v4.19.1 can be found here: https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patch-4.19.1-rt3.patch.xz The split quilt queue is available at: https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.1-rt3.tar.xz Sebastian Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
-rw-r--r--patches/0001-ARM-at91-add-TCB-registers-definitions.patch49
-rw-r--r--patches/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch270
-rw-r--r--patches/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch264
-rw-r--r--patches/0004-clocksource-drivers-atmel-pit-make-option-silent.patch (renamed from patches/0003-clocksource-drivers-atmel-pit-make-option-silent.patch)4
-rw-r--r--patches/0005-ARM-at91-Implement-clocksource-selection.patch (renamed from patches/0004-ARM-at91-Implement-clocksource-selection.patch)4
-rw-r--r--patches/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch (renamed from patches/0005-ARM-configs-at91-use-new-TCB-timer-driver.patch)4
-rw-r--r--patches/0007-ARM-configs-at91-unselect-PIT.patch (renamed from patches/0006-ARM-configs-at91-unselect-PIT.patch)4
-rw-r--r--patches/cpu-hotplug--Implement-CPU-pinning.patch20
-rw-r--r--patches/crypto-caam-qi-simplify-CGR-allocation-freeing.patch131
-rw-r--r--patches/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch12
-rw-r--r--patches/localversion.patch2
-rw-r--r--patches/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch4
-rw-r--r--patches/net-move-xmit_recursion-to-per-task-variable-on-RT.patch2
-rw-r--r--patches/net-provide-a-way-to-delegate-processing-a-softirq-t.patch2
-rw-r--r--patches/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch15
-rw-r--r--patches/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch96
-rw-r--r--patches/preempt-lazy-support.patch19
-rw-r--r--patches/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch1
-rw-r--r--patches/rcu-make-RCU_BOOST-default-on-RT.patch13
-rw-r--r--patches/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch34
-rw-r--r--patches/rtmutex-Provide-rt_mutex_slowlock_locked.patch14
-rw-r--r--patches/rtmutex-add-sleeping-lock-implementation.patch20
-rw-r--r--patches/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch13
-rw-r--r--patches/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch4
-rw-r--r--patches/series18
-rw-r--r--patches/skbufhead-raw-lock.patch10
-rw-r--r--patches/softirq-preempt-fix-3-re.patch6
-rw-r--r--patches/srcu-use-cpu_online-instead-custom-check.patch3
28 files changed, 666 insertions, 372 deletions
diff --git a/patches/0001-ARM-at91-add-TCB-registers-definitions.patch b/patches/0001-ARM-at91-add-TCB-registers-definitions.patch
index 2a0bf2141bd6..547035daccad 100644
--- a/patches/0001-ARM-at91-add-TCB-registers-definitions.patch
+++ b/patches/0001-ARM-at91-add-TCB-registers-definitions.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:38 +0200
-Subject: [PATCH 1/6] ARM: at91: add TCB registers definitions
+Date: Thu, 13 Sep 2018 13:30:18 +0200
+Subject: [PATCH 1/7] ARM: at91: add TCB registers definitions
Add registers and bits definitions for the timer counter blocks found on
Atmel ARM SoCs.
@@ -10,14 +10,14 @@ Tested-by: Andras Szemzo <szemzo.andras@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
- include/soc/at91/atmel_tcb.h | 216 +++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 216 insertions(+)
+ include/soc/at91/atmel_tcb.h | 183 +++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 183 insertions(+)
create mode 100644 include/soc/at91/atmel_tcb.h
--- /dev/null
+++ b/include/soc/at91/atmel_tcb.h
-@@ -0,0 +1,216 @@
-+// SPDX-License-Identifier: GPL-2.0
+@@ -0,0 +1,183 @@
++//SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2018 Microchip */
+
+#ifndef __SOC_ATMEL_TCB_H
@@ -185,48 +185,15 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+#define ATMEL_TC_WPMR_WPKEY (0x54494d << 8)
+#define ATMEL_TC_WPMR_WPEN BIT(0)
+
-+static inline struct clk *tcb_clk_get(struct device_node *node, int channel)
-+{
-+ struct clk *clk;
-+ char clk_name[] = "t0_clk";
-+
-+ clk_name[1] += channel;
-+ clk = of_clk_get_by_name(node->parent, clk_name);
-+ if (!IS_ERR(clk))
-+ return clk;
-+
-+ return of_clk_get_by_name(node->parent, "t0_clk");
-+}
-+
-+static inline int tcb_irq_get(struct device_node *node, int channel)
-+{
-+ int irq;
-+
-+ irq = of_irq_get(node->parent, channel);
-+ if (irq > 0)
-+ return irq;
-+
-+ return of_irq_get(node->parent, 0);
-+}
-+
+static const u8 atmel_tc_divisors[5] = { 2, 8, 32, 128, 0, };
+
-+struct atmel_tcb_info {
-+ int bits;
-+};
-+
-+static const struct atmel_tcb_info atmel_tcb_infos[] = {
-+ { .bits = 16 },
-+ { .bits = 32 },
-+};
-+
+static const struct of_device_id atmel_tcb_dt_ids[] = {
+ {
+ .compatible = "atmel,at91rm9200-tcb",
-+ .data = &atmel_tcb_infos[0],
++ .data = (void *)16,
+ }, {
+ .compatible = "atmel,at91sam9x5-tcb",
-+ .data = &atmel_tcb_infos[1],
++ .data = (void *)32,
+ }, {
+ /* sentinel */
+ }
diff --git a/patches/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch b/patches/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch
index 0062c79059d7..c0d7124dd59f 100644
--- a/patches/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch
+++ b/patches/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:39 +0200
-Subject: [PATCH 2/6] clocksource/drivers: Add a new driver for the Atmel ARM
+Date: Thu, 13 Sep 2018 13:30:19 +0200
+Subject: [PATCH 2/7] clocksource/drivers: Add a new driver for the Atmel ARM
TC blocks
Add a driver for the Atmel Timer Counter Blocks. This driver provides a
@@ -25,8 +25,8 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/clocksource/Kconfig | 8
drivers/clocksource/Makefile | 3
- drivers/clocksource/timer-atmel-tcb.c | 608 ++++++++++++++++++++++++++++++++++
- 3 files changed, 618 insertions(+), 1 deletion(-)
+ drivers/clocksource/timer-atmel-tcb.c | 410 ++++++++++++++++++++++++++++++++++
+ 3 files changed, 420 insertions(+), 1 deletion(-)
create mode 100644 drivers/clocksource/timer-atmel-tcb.c
--- a/drivers/clocksource/Kconfig
@@ -60,7 +60,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
obj-$(CONFIG_CS5535_CLOCK_EVENT_SRC) += cs5535-clockevt.o
--- /dev/null
+++ b/drivers/clocksource/timer-atmel-tcb.c
-@@ -0,0 +1,608 @@
+@@ -0,0 +1,410 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/clk.h>
+#include <linux/clockchips.h>
@@ -74,7 +74,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+#include <linux/sched_clock.h>
+#include <soc/at91/atmel_tcb.h>
+
-+static struct atmel_tcb_clksrc {
++struct atmel_tcb_clksrc {
+ struct clocksource clksrc;
+ struct clock_event_device clkevt;
+ struct regmap *regmap;
@@ -92,216 +92,22 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ } cache[2];
+ u32 bmr_cache;
+ bool registered;
-+} tc = {
-+ .clksrc = {
-+ .rating = 200,
-+ .mask = CLOCKSOURCE_MASK(32),
-+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-+ },
-+ .clkevt = {
-+ .features = CLOCK_EVT_FEAT_ONESHOT,
-+ /* Should be lower than at91rm9200's system timer */
-+ .rating = 125,
-+ },
++ bool clk_enabled;
+};
+
-+static struct tc_clkevt_device {
-+ struct clock_event_device clkevt;
-+ struct regmap *regmap;
-+ void __iomem *base;
-+ struct clk *slow_clk;
-+ struct clk *clk;
-+ char name[20];
-+ int channel;
-+ int irq;
-+ struct {
-+ u32 cmr;
-+ u32 imr;
-+ u32 rc;
-+ bool clken;
-+ } cache;
-+ bool registered;
-+} tce = {
-+ .clkevt = {
-+ .features = CLOCK_EVT_FEAT_PERIODIC |
-+ CLOCK_EVT_FEAT_ONESHOT,
-+ /*
-+ * Should be lower than at91rm9200's system timer
-+ * but higher than tc.clkevt.rating
-+ */
-+ .rating = 140,
-+ },
-+};
-+
-+/*
-+ * Clockevent device using its own channel
-+ */
-+static int tc_clkevt2_shutdown(struct clock_event_device *d)
-+{
-+ writel(0xff, tce.base + ATMEL_TC_IDR(tce.channel));
-+ writel(ATMEL_TC_CCR_CLKDIS, tce.base + ATMEL_TC_CCR(tce.channel));
-+ if (!clockevent_state_detached(d))
-+ clk_disable(tce.clk);
-+
-+ return 0;
-+}
-+
-+/* For now, we always use the 32K clock ... this optimizes for NO_HZ,
-+ * because using one of the divided clocks would usually mean the
-+ * tick rate can never be less than several dozen Hz (vs 0.5 Hz).
-+ *
-+ * A divided clock could be good for high resolution timers, since
-+ * 30.5 usec resolution can seem "low".
-+ */
-+static int tc_clkevt2_set_oneshot(struct clock_event_device *d)
-+{
-+ if (clockevent_state_oneshot(d) || clockevent_state_periodic(d))
-+ tc_clkevt2_shutdown(d);
-+
-+ clk_enable(tce.clk);
-+
-+ /* slow clock, count up to RC, then irq and stop */
-+ writel(ATMEL_TC_CMR_TCLK(4) | ATMEL_TC_CMR_CPCSTOP |
-+ ATMEL_TC_CMR_WAVE | ATMEL_TC_CMR_WAVESEL_UPRC,
-+ tce.base + ATMEL_TC_CMR(tce.channel));
-+ writel(ATMEL_TC_CPCS, tce.base + ATMEL_TC_IER(tce.channel));
-+
-+ return 0;
-+}
++static struct atmel_tcb_clksrc tc;
+
-+static int tc_clkevt2_set_periodic(struct clock_event_device *d)
-+{
-+ if (clockevent_state_oneshot(d) || clockevent_state_periodic(d))
-+ tc_clkevt2_shutdown(d);
-+
-+ /* By not making the gentime core emulate periodic mode on top
-+ * of oneshot, we get lower overhead and improved accuracy.
-+ */
-+ clk_enable(tce.clk);
-+
-+ /* slow clock, count up to RC, then irq and restart */
-+ writel(ATMEL_TC_CMR_TCLK(4) | ATMEL_TC_CMR_WAVE |
-+ ATMEL_TC_CMR_WAVESEL_UPRC,
-+ tce.base + ATMEL_TC_CMR(tce.channel));
-+ writel((32768 + HZ / 2) / HZ, tce.base + ATMEL_TC_RC(tce.channel));
-+
-+ /* Enable clock and interrupts on RC compare */
-+ writel(ATMEL_TC_CPCS, tce.base + ATMEL_TC_IER(tce.channel));
-+ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
-+ tce.base + ATMEL_TC_CCR(tce.channel));
-+
-+ return 0;
-+}
-+
-+static int tc_clkevt2_next_event(unsigned long delta,
-+ struct clock_event_device *d)
++static struct clk *tcb_clk_get(struct device_node *node, int channel)
+{
-+ writel(delta, tce.base + ATMEL_TC_RC(tce.channel));
-+ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
-+ tce.base + ATMEL_TC_CCR(tce.channel));
-+
-+ return 0;
-+}
-+
-+static irqreturn_t tc_clkevt2_irq(int irq, void *handle)
-+{
-+ unsigned int sr;
-+
-+ sr = readl(tce.base + ATMEL_TC_SR(tce.channel));
-+ if (sr & ATMEL_TC_CPCS) {
-+ tce.clkevt.event_handler(&tce.clkevt);
-+ return IRQ_HANDLED;
-+ }
-+
-+ return IRQ_NONE;
-+}
-+
-+static void tc_clkevt2_suspend(struct clock_event_device *d)
-+{
-+ tce.cache.cmr = readl(tce.base + ATMEL_TC_CMR(tce.channel));
-+ tce.cache.imr = readl(tce.base + ATMEL_TC_IMR(tce.channel));
-+ tce.cache.rc = readl(tce.base + ATMEL_TC_RC(tce.channel));
-+ tce.cache.clken = !!(readl(tce.base + ATMEL_TC_SR(tce.channel)) &
-+ ATMEL_TC_CLKSTA);
-+}
-+
-+static void tc_clkevt2_resume(struct clock_event_device *d)
-+{
-+ /* Restore registers for the channel, RA and RB are not used */
-+ writel(tce.cache.cmr, tc.base + ATMEL_TC_CMR(tce.channel));
-+ writel(tce.cache.rc, tc.base + ATMEL_TC_RC(tce.channel));
-+ writel(0, tc.base + ATMEL_TC_RA(tce.channel));
-+ writel(0, tc.base + ATMEL_TC_RB(tce.channel));
-+ /* Disable all the interrupts */
-+ writel(0xff, tc.base + ATMEL_TC_IDR(tce.channel));
-+ /* Reenable interrupts that were enabled before suspending */
-+ writel(tce.cache.imr, tc.base + ATMEL_TC_IER(tce.channel));
-+
-+ /* Start the clock if it was used */
-+ if (tce.cache.clken)
-+ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
-+ tc.base + ATMEL_TC_CCR(tce.channel));
-+}
-+
-+static int __init tc_clkevt_register(struct device_node *node,
-+ struct regmap *regmap, void __iomem *base,
-+ int channel, int irq, int bits)
-+{
-+ int ret;
-+
-+ tce.regmap = regmap;
-+ tce.base = base;
-+ tce.channel = channel;
-+ tce.irq = irq;
-+
-+ tce.slow_clk = of_clk_get_by_name(node->parent, "slow_clk");
-+ if (IS_ERR(tce.slow_clk))
-+ return PTR_ERR(tce.slow_clk);
-+
-+ ret = clk_prepare_enable(tce.slow_clk);
-+ if (ret)
-+ return ret;
-+
-+ tce.clk = tcb_clk_get(node, tce.channel);
-+ if (IS_ERR(tce.clk)) {
-+ ret = PTR_ERR(tce.clk);
-+ goto err_slow;
-+ }
-+
-+ snprintf(tce.name, sizeof(tce.name), "%s:%d",
-+ kbasename(node->parent->full_name), channel);
-+ tce.clkevt.cpumask = cpumask_of(0);
-+ tce.clkevt.name = tce.name;
-+ tce.clkevt.set_next_event = tc_clkevt2_next_event,
-+ tce.clkevt.set_state_shutdown = tc_clkevt2_shutdown,
-+ tce.clkevt.set_state_periodic = tc_clkevt2_set_periodic,
-+ tce.clkevt.set_state_oneshot = tc_clkevt2_set_oneshot,
-+ tce.clkevt.suspend = tc_clkevt2_suspend,
-+ tce.clkevt.resume = tc_clkevt2_resume,
-+
-+ /* try to enable clk to avoid future errors in mode change */
-+ ret = clk_prepare_enable(tce.clk);
-+ if (ret)
-+ goto err_slow;
-+ clk_disable(tce.clk);
-+
-+ clockevents_config_and_register(&tce.clkevt, 32768, 1, BIT(bits) - 1);
-+
-+ ret = request_irq(tce.irq, tc_clkevt2_irq, IRQF_TIMER | IRQF_SHARED,
-+ tce.clkevt.name, &tce);
-+ if (ret)
-+ goto err_clk;
-+
-+ tce.registered = true;
-+
-+ return 0;
++ struct clk *clk;
++ char clk_name[] = "t0_clk";
+
-+err_clk:
-+ clk_unprepare(tce.clk);
-+err_slow:
-+ clk_disable_unprepare(tce.slow_clk);
++ clk_name[1] += channel;
++ clk = of_clk_get_by_name(node->parent, clk_name);
++ if (!IS_ERR(clk))
++ return clk;
+
-+ return ret;
++ return of_clk_get_by_name(node->parent, "t0_clk");
+}
+
+/*
@@ -339,7 +145,6 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+{
+ u32 old, next, cur;
+
-+
+ old = readl(tc.base + ATMEL_TC_CV(tc.channels[0]));
+ next = old + delta;
+ writel(next, tc.base + ATMEL_TC_RC(tc.channels[0]));
@@ -566,6 +371,9 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ tc.clksrc.name = tc.name;
+ tc.clksrc.suspend = tc_clksrc_suspend;
+ tc.clksrc.resume = tc_clksrc_resume;
++ tc.clksrc.rating = 200;
++ tc.clksrc.mask = CLOCKSOURCE_MASK(32);
++ tc.clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS;
+
+ err = clocksource_register_hz(&tc.clksrc, divided_rate);
+ if (err)
@@ -581,6 +389,9 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ tc.clkevt.set_next_event = tcb_clkevt_next_event;
+ tc.clkevt.set_state_oneshot = tcb_clkevt_oneshot;
+ tc.clkevt.set_state_shutdown = tcb_clkevt_shutdown;
++ tc.clkevt.features = CLOCK_EVT_FEAT_ONESHOT;
++ tc.clkevt.rating = 125;
++
+ clockevents_config_and_register(&tc.clkevt, divided_rate, 1,
+ BIT(tc.bits) - 1);
+
@@ -609,13 +420,13 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+static int __init tcb_clksrc_init(struct device_node *node)
+{
+ const struct of_device_id *match;
-+ const struct atmel_tcb_info *tcb_info;
+ struct regmap *regmap;
+ void __iomem *tcb_base;
+ u32 channel;
-+ int bits, irq, err, chan1 = -1;
++ int irq, err, chan1 = -1;
++ unsigned bits;
+
-+ if (tc.registered && tce.registered)
++ if (tc.registered)
+ return -ENODEV;
+
+ /*
@@ -634,38 +445,29 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ }
+
+ match = of_match_node(atmel_tcb_dt_ids, node->parent);
-+ tcb_info = match->data;
-+ bits = tcb_info->bits;
++ bits = (uintptr_t)match->data;
+
+ err = of_property_read_u32_index(node, "reg", 0, &channel);
+ if (err)
+ return err;
+
-+ irq = tcb_irq_get(node, channel);
-+ if (irq < 0)
-+ return irq;
-+
-+ if (tc.registered)
-+ return tc_clkevt_register(node, regmap, tcb_base, channel, irq,
-+ bits);
++ irq = of_irq_get(node->parent, channel);
++ if (irq < 0) {
++ irq = of_irq_get(node->parent, 0);
++ if (irq < 0)
++ return irq;
++ }
+
+ if (bits == 16) {
+ of_property_read_u32_index(node, "reg", 1, &chan1);
+ if (chan1 == -1) {
-+ if (tce.registered) {
-+ pr_err("%s: clocksource needs two channels\n",
-+ node->parent->full_name);
-+ return -EINVAL;
-+ } else {
-+ return tc_clkevt_register(node, regmap,
-+ tcb_base, channel,
-+ irq, bits);
-+ }
++ pr_err("%s: clocksource needs two channels\n",
++ node->parent->full_name);
++ return -EINVAL;
+ }
+ }
+
+ return tcb_clksrc_register(node, regmap, tcb_base, channel, chan1, irq,
+ bits);
+}
-+CLOCKSOURCE_OF_DECLARE(atmel_tcb_clksrc, "atmel,tcb-timer",
-+ tcb_clksrc_init);
++TIMER_OF_DECLARE(atmel_tcb_clksrc, "atmel,tcb-timer", tcb_clksrc_init);
diff --git a/patches/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch b/patches/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch
new file mode 100644
index 000000000000..698988cbd0ba
--- /dev/null
+++ b/patches/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch
@@ -0,0 +1,264 @@
+From: Alexandre Belloni <alexandre.belloni@bootlin.com>
+Date: Thu, 13 Sep 2018 13:30:20 +0200
+Subject: [PATCH 3/7] clocksource/drivers: timer-atmel-tcb: add clockevent
+ device on separate channel
+
+Add an other clockevent device that uses a separate TCB channel when
+available.
+
+Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/clocksource/timer-atmel-tcb.c | 217 +++++++++++++++++++++++++++++++++-
+ 1 file changed, 212 insertions(+), 5 deletions(-)
+
+--- a/drivers/clocksource/timer-atmel-tcb.c
++++ b/drivers/clocksource/timer-atmel-tcb.c
+@@ -32,7 +32,7 @@ struct atmel_tcb_clksrc {
+ bool clk_enabled;
+ };
+
+-static struct atmel_tcb_clksrc tc;
++static struct atmel_tcb_clksrc tc, tce;
+
+ static struct clk *tcb_clk_get(struct device_node *node, int channel)
+ {
+@@ -48,6 +48,203 @@ static struct clk *tcb_clk_get(struct de
+ }
+
+ /*
++ * Clockevent device using its own channel
++ */
++
++static void tc_clkevt2_clk_disable(struct clock_event_device *d)
++{
++ clk_disable(tce.clk[0]);
++ tce.clk_enabled = false;
++}
++
++static void tc_clkevt2_clk_enable(struct clock_event_device *d)
++{
++ if (tce.clk_enabled)
++ return;
++ clk_enable(tce.clk[0]);
++ tce.clk_enabled = true;
++}
++
++static int tc_clkevt2_stop(struct clock_event_device *d)
++{
++ writel(0xff, tce.base + ATMEL_TC_IDR(tce.channels[0]));
++ writel(ATMEL_TC_CCR_CLKDIS, tce.base + ATMEL_TC_CCR(tce.channels[0]));
++
++ return 0;
++}
++
++static int tc_clkevt2_shutdown(struct clock_event_device *d)
++{
++ tc_clkevt2_stop(d);
++ if (!clockevent_state_detached(d))
++ tc_clkevt2_clk_disable(d);
++
++ return 0;
++}
++
++/* For now, we always use the 32K clock ... this optimizes for NO_HZ,
++ * because using one of the divided clocks would usually mean the
++ * tick rate can never be less than several dozen Hz (vs 0.5 Hz).
++ *
++ * A divided clock could be good for high resolution timers, since
++ * 30.5 usec resolution can seem "low".
++ */
++static int tc_clkevt2_set_oneshot(struct clock_event_device *d)
++{
++ if (clockevent_state_oneshot(d) || clockevent_state_periodic(d))
++ tc_clkevt2_stop(d);
++
++ tc_clkevt2_clk_enable(d);
++
++ /* slow clock, count up to RC, then irq and stop */
++ writel(ATMEL_TC_CMR_TCLK(4) | ATMEL_TC_CMR_CPCSTOP |
++ ATMEL_TC_CMR_WAVE | ATMEL_TC_CMR_WAVESEL_UPRC,
++ tce.base + ATMEL_TC_CMR(tce.channels[0]));
++ writel(ATMEL_TC_CPCS, tce.base + ATMEL_TC_IER(tce.channels[0]));
++
++ return 0;
++}
++
++static int tc_clkevt2_set_periodic(struct clock_event_device *d)
++{
++ if (clockevent_state_oneshot(d) || clockevent_state_periodic(d))
++ tc_clkevt2_stop(d);
++
++ /* By not making the gentime core emulate periodic mode on top
++ * of oneshot, we get lower overhead and improved accuracy.
++ */
++ tc_clkevt2_clk_enable(d);
++
++ /* slow clock, count up to RC, then irq and restart */
++ writel(ATMEL_TC_CMR_TCLK(4) | ATMEL_TC_CMR_WAVE |
++ ATMEL_TC_CMR_WAVESEL_UPRC,
++ tce.base + ATMEL_TC_CMR(tce.channels[0]));
++ writel((32768 + HZ / 2) / HZ, tce.base + ATMEL_TC_RC(tce.channels[0]));
++
++ /* Enable clock and interrupts on RC compare */
++ writel(ATMEL_TC_CPCS, tce.base + ATMEL_TC_IER(tce.channels[0]));
++ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
++ tce.base + ATMEL_TC_CCR(tce.channels[0]));
++
++ return 0;
++}
++
++static int tc_clkevt2_next_event(unsigned long delta,
++ struct clock_event_device *d)
++{
++ writel(delta, tce.base + ATMEL_TC_RC(tce.channels[0]));
++ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
++ tce.base + ATMEL_TC_CCR(tce.channels[0]));
++
++ return 0;
++}
++
++static irqreturn_t tc_clkevt2_irq(int irq, void *handle)
++{
++ unsigned int sr;
++
++ sr = readl(tce.base + ATMEL_TC_SR(tce.channels[0]));
++ if (sr & ATMEL_TC_CPCS) {
++ tce.clkevt.event_handler(&tce.clkevt);
++ return IRQ_HANDLED;
++ }
++
++ return IRQ_NONE;
++}
++
++static void tc_clkevt2_suspend(struct clock_event_device *d)
++{
++ tce.cache[0].cmr = readl(tce.base + ATMEL_TC_CMR(tce.channels[0]));
++ tce.cache[0].imr = readl(tce.base + ATMEL_TC_IMR(tce.channels[0]));
++ tce.cache[0].rc = readl(tce.base + ATMEL_TC_RC(tce.channels[0]));
++ tce.cache[0].clken = !!(readl(tce.base + ATMEL_TC_SR(tce.channels[0])) &
++ ATMEL_TC_CLKSTA);
++}
++
++static void tc_clkevt2_resume(struct clock_event_device *d)
++{
++ /* Restore registers for the channel, RA and RB are not used */
++ writel(tce.cache[0].cmr, tc.base + ATMEL_TC_CMR(tce.channels[0]));
++ writel(tce.cache[0].rc, tc.base + ATMEL_TC_RC(tce.channels[0]));
++ writel(0, tc.base + ATMEL_TC_RA(tce.channels[0]));
++ writel(0, tc.base + ATMEL_TC_RB(tce.channels[0]));
++ /* Disable all the interrupts */
++ writel(0xff, tc.base + ATMEL_TC_IDR(tce.channels[0]));
++ /* Reenable interrupts that were enabled before suspending */
++ writel(tce.cache[0].imr, tc.base + ATMEL_TC_IER(tce.channels[0]));
++
++ /* Start the clock if it was used */
++ if (tce.cache[0].clken)
++ writel(ATMEL_TC_CCR_CLKEN | ATMEL_TC_CCR_SWTRG,
++ tc.base + ATMEL_TC_CCR(tce.channels[0]));
++}
++
++static int __init tc_clkevt_register(struct device_node *node,
++ struct regmap *regmap, void __iomem *base,
++ int channel, int irq, int bits)
++{
++ int ret;
++ struct clk *slow_clk;
++
++ tce.regmap = regmap;
++ tce.base = base;
++ tce.channels[0] = channel;
++ tce.irq = irq;
++
++ slow_clk = of_clk_get_by_name(node->parent, "slow_clk");
++ if (IS_ERR(slow_clk))
++ return PTR_ERR(slow_clk);
++
++ ret = clk_prepare_enable(slow_clk);
++ if (ret)
++ return ret;
++
++ tce.clk[0] = tcb_clk_get(node, tce.channels[0]);
++ if (IS_ERR(tce.clk[0])) {
++ ret = PTR_ERR(tce.clk[0]);
++ goto err_slow;
++ }
++
++ snprintf(tce.name, sizeof(tce.name), "%s:%d",
++ kbasename(node->parent->full_name), channel);
++ tce.clkevt.cpumask = cpumask_of(0);
++ tce.clkevt.name = tce.name;
++ tce.clkevt.set_next_event = tc_clkevt2_next_event,
++ tce.clkevt.set_state_shutdown = tc_clkevt2_shutdown,
++ tce.clkevt.set_state_periodic = tc_clkevt2_set_periodic,
++ tce.clkevt.set_state_oneshot = tc_clkevt2_set_oneshot,
++ tce.clkevt.suspend = tc_clkevt2_suspend,
++ tce.clkevt.resume = tc_clkevt2_resume,
++ tce.clkevt.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
++ tce.clkevt.rating = 140;
++
++ /* try to enable clk to avoid future errors in mode change */
++ ret = clk_prepare_enable(tce.clk[0]);
++ if (ret)
++ goto err_slow;
++ clk_disable(tce.clk[0]);
++
++ clockevents_config_and_register(&tce.clkevt, 32768, 1,
++ CLOCKSOURCE_MASK(bits));
++
++ ret = request_irq(tce.irq, tc_clkevt2_irq, IRQF_TIMER | IRQF_SHARED,
++ tce.clkevt.name, &tce);
++ if (ret)
++ goto err_clk;
++
++ tce.registered = true;
++
++ return 0;
++
++err_clk:
++ clk_unprepare(tce.clk[0]);
++err_slow:
++ clk_disable_unprepare(slow_clk);
++
++ return ret;
++}
++
++/*
+ * Clocksource and clockevent using the same channel(s)
+ */
+ static u64 tc_get_cycles(struct clocksource *cs)
+@@ -363,7 +560,7 @@ static int __init tcb_clksrc_init(struct
+ int irq, err, chan1 = -1;
+ unsigned bits;
+
+- if (tc.registered)
++ if (tc.registered && tce.registered)
+ return -ENODEV;
+
+ /*
+@@ -395,12 +592,22 @@ static int __init tcb_clksrc_init(struct
+ return irq;
+ }
+
++ if (tc.registered)
++ return tc_clkevt_register(node, regmap, tcb_base, channel, irq,
++ bits);
++
+ if (bits == 16) {
+ of_property_read_u32_index(node, "reg", 1, &chan1);
+ if (chan1 == -1) {
+- pr_err("%s: clocksource needs two channels\n",
+- node->parent->full_name);
+- return -EINVAL;
++ if (tce.registered) {
++ pr_err("%s: clocksource needs two channels\n",
++ node->parent->full_name);
++ return -EINVAL;
++ } else {
++ return tc_clkevt_register(node, regmap,
++ tcb_base, channel,
++ irq, bits);
++ }
+ }
+ }
+
diff --git a/patches/0003-clocksource-drivers-atmel-pit-make-option-silent.patch b/patches/0004-clocksource-drivers-atmel-pit-make-option-silent.patch
index e627f90709e9..78ad5f0841d1 100644
--- a/patches/0003-clocksource-drivers-atmel-pit-make-option-silent.patch
+++ b/patches/0004-clocksource-drivers-atmel-pit-make-option-silent.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:40 +0200
-Subject: [PATCH 3/6] clocksource/drivers: atmel-pit: make option silent
+Date: Thu, 13 Sep 2018 13:30:21 +0200
+Subject: [PATCH 4/7] clocksource/drivers: atmel-pit: make option silent
To conform with the other option, make the ATMEL_PIT option silent so it
can be selected from the platform
diff --git a/patches/0004-ARM-at91-Implement-clocksource-selection.patch b/patches/0005-ARM-at91-Implement-clocksource-selection.patch
index 8f1f88f5bf48..b044504c9ffb 100644
--- a/patches/0004-ARM-at91-Implement-clocksource-selection.patch
+++ b/patches/0005-ARM-at91-Implement-clocksource-selection.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:41 +0200
-Subject: [PATCH 4/6] ARM: at91: Implement clocksource selection
+Date: Thu, 13 Sep 2018 13:30:22 +0200
+Subject: [PATCH 5/7] ARM: at91: Implement clocksource selection
Allow selecting and unselecting the PIT clocksource driver so it doesn't
have to be compile when unused.
diff --git a/patches/0005-ARM-configs-at91-use-new-TCB-timer-driver.patch b/patches/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch
index a5b12e156930..aaeac81386ad 100644
--- a/patches/0005-ARM-configs-at91-use-new-TCB-timer-driver.patch
+++ b/patches/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:42 +0200
-Subject: [PATCH 5/6] ARM: configs: at91: use new TCB timer driver
+Date: Thu, 13 Sep 2018 13:30:23 +0200
+Subject: [PATCH 6/7] ARM: configs: at91: use new TCB timer driver
Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to
timer-atmel-tcb.
diff --git a/patches/0006-ARM-configs-at91-unselect-PIT.patch b/patches/0007-ARM-configs-at91-unselect-PIT.patch
index d3b805ffd94a..f5694ce09cb6 100644
--- a/patches/0006-ARM-configs-at91-unselect-PIT.patch
+++ b/patches/0007-ARM-configs-at91-unselect-PIT.patch
@@ -1,6 +1,6 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
-Date: Wed, 18 Apr 2018 12:51:43 +0200
-Subject: [PATCH 6/6] ARM: configs: at91: unselect PIT
+Date: Thu, 13 Sep 2018 13:30:24 +0200
+Subject: [PATCH 7/7] ARM: configs: at91: unselect PIT
The PIT is not required anymore to successfully boot and may actually harm
in case preempt-rt is used because the PIT interrupt is shared.
diff --git a/patches/cpu-hotplug--Implement-CPU-pinning.patch b/patches/cpu-hotplug--Implement-CPU-pinning.patch
index 7d1eee8b2a79..0d86bf078762 100644
--- a/patches/cpu-hotplug--Implement-CPU-pinning.patch
+++ b/patches/cpu-hotplug--Implement-CPU-pinning.patch
@@ -5,8 +5,8 @@ Date: Wed, 19 Jul 2017 17:31:20 +0200
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/sched.h | 1 +
- kernel/cpu.c | 40 ++++++++++++++++++++++++++++++++++++++++
- 2 files changed, 41 insertions(+)
+ kernel/cpu.c | 38 ++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 39 insertions(+)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -32,14 +32,14 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#if defined(CONFIG_LOCKDEP) && defined(CONFIG_SMP)
static struct lockdep_map cpuhp_state_up_map =
STATIC_LOCKDEP_MAP_INIT("cpuhp_state-up", &cpuhp_state_up_map);
-@@ -285,7 +290,30 @@ static int cpu_hotplug_disabled;
+@@ -285,7 +290,28 @@ static int cpu_hotplug_disabled;
*/
void pin_current_cpu(void)
{
+ struct rt_rw_lock *cpuhp_pin;
+ unsigned int cpu;
+ int ret;
-
++
+again:
+ cpuhp_pin = this_cpu_ptr(&cpuhp_pin_lock);
+ ret = __read_rt_trylock(cpuhp_pin);
@@ -48,13 +48,11 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+ return;
+ }
+ cpu = smp_processor_id();
-+ preempt_lazy_enable();
+ preempt_enable();
+
+ __read_rt_lock(cpuhp_pin);
-+
+
+ preempt_disable();
-+ preempt_lazy_disable();
+ if (cpu != smp_processor_id()) {
+ __read_rt_unlock(cpuhp_pin);
+ goto again;
@@ -63,7 +61,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
/**
-@@ -293,6 +321,13 @@ void pin_current_cpu(void)
+@@ -293,6 +319,13 @@ void pin_current_cpu(void)
*/
void unpin_current_cpu(void)
{
@@ -77,7 +75,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
DEFINE_STATIC_PERCPU_RWSEM(cpu_hotplug_lock);
-@@ -846,6 +881,7 @@ static int take_cpu_down(void *_param)
+@@ -846,6 +879,7 @@ static int take_cpu_down(void *_param)
static int takedown_cpu(unsigned int cpu)
{
@@ -85,7 +83,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
int err;
-@@ -858,11 +894,14 @@ static int takedown_cpu(unsigned int cpu
+@@ -858,11 +892,14 @@ static int takedown_cpu(unsigned int cpu
*/
irq_lock_sparse();
@@ -100,7 +98,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/* CPU refused to die */
irq_unlock_sparse();
/* Unpark the hotplug thread so we can rollback there */
-@@ -881,6 +920,7 @@ static int takedown_cpu(unsigned int cpu
+@@ -881,6 +918,7 @@ static int takedown_cpu(unsigned int cpu
wait_for_ap_thread(st, false);
BUG_ON(st->state != CPUHP_AP_IDLE_DEAD);
diff --git a/patches/crypto-caam-qi-simplify-CGR-allocation-freeing.patch b/patches/crypto-caam-qi-simplify-CGR-allocation-freeing.patch
new file mode 100644
index 000000000000..bcf3bf8d74df
--- /dev/null
+++ b/patches/crypto-caam-qi-simplify-CGR-allocation-freeing.patch
@@ -0,0 +1,131 @@
+From: =?UTF-8?q?Horia=20Geant=C4=83?= <horia.geanta@nxp.com>
+Date: Mon, 8 Oct 2018 14:09:37 +0300
+Subject: [PATCH] crypto: caam/qi - simplify CGR allocation, freeing
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[Upstream commit 29e83c757006fd751966bdc53392bb22d74179c6]
+
+CGRs (Congestion Groups) have to be freed by the same CPU that
+initialized them.
+This is why currently the driver takes special measures; however, using
+set_cpus_allowed_ptr() is incorrect - as reported by Sebastian.
+
+Instead of the generic solution of replacing set_cpus_allowed_ptr() with
+work_on_cpu_safe(), we use the qman_delete_cgr_safe() QBMan API instead
+of qman_delete_cgr() - which internally takes care of proper CGR
+deletion.
+
+Link: https://lkml.kernel.org/r/20181005125443.dfhd2asqktm22ney@linutronix.de
+Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ drivers/crypto/caam/qi.c | 43 ++++---------------------------------------
+ drivers/crypto/caam/qi.h | 2 +-
+ 2 files changed, 5 insertions(+), 40 deletions(-)
+
+--- a/drivers/crypto/caam/qi.c
++++ b/drivers/crypto/caam/qi.c
+@@ -84,13 +84,6 @@ static u64 times_congested;
+ #endif
+
+ /*
+- * CPU from where the module initialised. This is required because QMan driver
+- * requires CGRs to be removed from same CPU from where they were originally
+- * allocated.
+- */
+-static int mod_init_cpu;
+-
+-/*
+ * This is a a cache of buffers, from which the users of CAAM QI driver
+ * can allocate short (CAAM_QI_MEMCACHE_SIZE) buffers. It's faster than
+ * doing malloc on the hotpath.
+@@ -492,12 +485,11 @@ void caam_drv_ctx_rel(struct caam_drv_ct
+ }
+ EXPORT_SYMBOL(caam_drv_ctx_rel);
+
+-int caam_qi_shutdown(struct device *qidev)
++void caam_qi_shutdown(struct device *qidev)
+ {
+- int i, ret;
++ int i;
+ struct caam_qi_priv *priv = dev_get_drvdata(qidev);
+ const cpumask_t *cpus = qman_affine_cpus();
+- struct cpumask old_cpumask = current->cpus_allowed;
+
+ for_each_cpu(i, cpus) {
+ struct napi_struct *irqtask;
+@@ -510,26 +502,12 @@ int caam_qi_shutdown(struct device *qide
+ dev_err(qidev, "Rsp FQ kill failed, cpu: %d\n", i);
+ }
+
+- /*
+- * QMan driver requires CGRs to be deleted from same CPU from where they
+- * were instantiated. Hence we get the module removal execute from the
+- * same CPU from where it was originally inserted.
+- */
+- set_cpus_allowed_ptr(current, get_cpu_mask(mod_init_cpu));
+-
+- ret = qman_delete_cgr(&priv->cgr);
+- if (ret)
+- dev_err(qidev, "Deletion of CGR failed: %d\n", ret);
+- else
+- qman_release_cgrid(priv->cgr.cgrid);
++ qman_delete_cgr_safe(&priv->cgr);
++ qman_release_cgrid(priv->cgr.cgrid);
+
+ kmem_cache_destroy(qi_cache);
+
+- /* Now that we're done with the CGRs, restore the cpus allowed mask */
+- set_cpus_allowed_ptr(current, &old_cpumask);
+-
+ platform_device_unregister(priv->qi_pdev);
+- return ret;
+ }
+
+ static void cgr_cb(struct qman_portal *qm, struct qman_cgr *cgr, int congested)
+@@ -718,22 +696,11 @@ int caam_qi_init(struct platform_device
+ struct device *ctrldev = &caam_pdev->dev, *qidev;
+ struct caam_drv_private *ctrlpriv;
+ const cpumask_t *cpus = qman_affine_cpus();
+- struct cpumask old_cpumask = current->cpus_allowed;
+ static struct platform_device_info qi_pdev_info = {
+ .name = "caam_qi",
+ .id = PLATFORM_DEVID_NONE
+ };
+
+- /*
+- * QMAN requires CGRs to be removed from same CPU+portal from where it
+- * was originally allocated. Hence we need to note down the
+- * initialisation CPU and use the same CPU for module exit.
+- * We select the first CPU to from the list of portal owning CPUs.
+- * Then we pin module init to this CPU.
+- */
+- mod_init_cpu = cpumask_first(cpus);
+- set_cpus_allowed_ptr(current, get_cpu_mask(mod_init_cpu));
+-
+ qi_pdev_info.parent = ctrldev;
+ qi_pdev_info.dma_mask = dma_get_mask(ctrldev);
+ qi_pdev = platform_device_register_full(&qi_pdev_info);
+@@ -795,8 +762,6 @@ int caam_qi_init(struct platform_device
+ return -ENOMEM;
+ }
+
+- /* Done with the CGRs; restore the cpus allowed mask */
+- set_cpus_allowed_ptr(current, &old_cpumask);
+ #ifdef CONFIG_DEBUG_FS
+ debugfs_create_file("qi_congested", 0444, ctrlpriv->ctl,
+ &times_congested, &caam_fops_u64_ro);
+--- a/drivers/crypto/caam/qi.h
++++ b/drivers/crypto/caam/qi.h
+@@ -174,7 +174,7 @@ int caam_drv_ctx_update(struct caam_drv_
+ void caam_drv_ctx_rel(struct caam_drv_ctx *drv_ctx);
+
+ int caam_qi_init(struct platform_device *pdev);
+-int caam_qi_shutdown(struct device *dev);
++void caam_qi_shutdown(struct device *dev);
+
+ /**
+ * qi_cache_alloc - Allocate buffers from CAAM-QI cache
diff --git a/patches/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch b/patches/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch
index 6050bf9b8baa..243ab1d244f2 100644
--- a/patches/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch
+++ b/patches/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch
@@ -30,7 +30,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
struct rt_rw_lock *cpuhp_pin;
unsigned int cpu;
int ret;
-@@ -314,6 +315,7 @@ void pin_current_cpu(void)
+@@ -312,6 +313,7 @@ void pin_current_cpu(void)
goto again;
}
current->pinned_on_cpu = cpu;
@@ -38,7 +38,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
/**
-@@ -321,6 +323,7 @@ void pin_current_cpu(void)
+@@ -319,6 +321,7 @@ void pin_current_cpu(void)
*/
void unpin_current_cpu(void)
{
@@ -46,7 +46,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
struct rt_rw_lock *cpuhp_pin = this_cpu_ptr(&cpuhp_pin_lock);
if (WARN_ON(current->pinned_on_cpu != smp_processor_id()))
-@@ -328,6 +331,7 @@ void unpin_current_cpu(void)
+@@ -326,6 +329,7 @@ void unpin_current_cpu(void)
current->pinned_on_cpu = -1;
__read_rt_unlock(cpuhp_pin);
@@ -54,7 +54,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
DEFINE_STATIC_PERCPU_RWSEM(cpu_hotplug_lock);
-@@ -881,7 +885,9 @@ static int take_cpu_down(void *_param)
+@@ -879,7 +883,9 @@ static int take_cpu_down(void *_param)
static int takedown_cpu(unsigned int cpu)
{
@@ -64,7 +64,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
int err;
-@@ -894,14 +900,18 @@ static int takedown_cpu(unsigned int cpu
+@@ -892,14 +898,18 @@ static int takedown_cpu(unsigned int cpu
*/
irq_lock_sparse();
@@ -83,7 +83,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* CPU refused to die */
irq_unlock_sparse();
/* Unpark the hotplug thread so we can rollback there */
-@@ -920,7 +930,9 @@ static int takedown_cpu(unsigned int cpu
+@@ -918,7 +928,9 @@ static int takedown_cpu(unsigned int cpu
wait_for_ap_thread(st, false);
BUG_ON(st->state != CPUHP_AP_IDLE_DEAD);
diff --git a/patches/localversion.patch b/patches/localversion.patch
index 279489a1d145..e36eb4b6666a 100644
--- a/patches/localversion.patch
+++ b/patches/localversion.patch
@@ -10,4 +10,4 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- /dev/null
+++ b/localversion-rt
@@ -0,0 +1 @@
-+-rt2
++-rt3
diff --git a/patches/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch b/patches/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
index 7c800eaf3dce..43d695ae42c4 100644
--- a/patches/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
+++ b/patches/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
@@ -50,7 +50,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
{
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -5926,6 +5926,7 @@ bool napi_schedule_prep(struct napi_stru
+@@ -5927,6 +5927,7 @@ bool napi_schedule_prep(struct napi_stru
}
EXPORT_SYMBOL(napi_schedule_prep);
@@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/**
* __napi_schedule_irqoff - schedule for receive
* @n: entry to schedule
-@@ -5937,6 +5938,7 @@ void __napi_schedule_irqoff(struct napi_
+@@ -5938,6 +5939,7 @@ void __napi_schedule_irqoff(struct napi_
____napi_schedule(this_cpu_ptr(&softnet_data), n);
}
EXPORT_SYMBOL(__napi_schedule_irqoff);
diff --git a/patches/net-move-xmit_recursion-to-per-task-variable-on-RT.patch b/patches/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
index e093f864732a..124ecdec12e8 100644
--- a/patches/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
+++ b/patches/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
@@ -231,7 +231,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
if (dev_xmit_complete(rc)) {
HARD_TX_UNLOCK(dev, txq);
goto out;
-@@ -8359,7 +8364,7 @@ static void netdev_init_one_queue(struct
+@@ -8360,7 +8365,7 @@ static void netdev_init_one_queue(struct
/* Initialize queue lock */
spin_lock_init(&queue->_xmit_lock);
netdev_set_xmit_lockdep_class(&queue->_xmit_lock, dev->type);
diff --git a/patches/net-provide-a-way-to-delegate-processing-a-softirq-t.patch b/patches/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
index 19b719721323..e94de9470dc2 100644
--- a/patches/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
+++ b/patches/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
@@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
void raise_softirq_irqoff(unsigned int nr)
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -6353,7 +6353,7 @@ static __latent_entropy void net_rx_acti
+@@ -6354,7 +6354,7 @@ static __latent_entropy void net_rx_acti
list_splice_tail(&repoll, &list);
list_splice(&list, &sd->poll_list);
if (!list_empty(&sd->poll_list))
diff --git a/patches/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch b/patches/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
index 84bfb547d896..29d27889e758 100644
--- a/patches/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
+++ b/patches/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
@@ -23,9 +23,9 @@ Link: http://lkml.kernel.org/r/20111005184518.GA21601@linux.vnet.ibm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
- kernel/rcu/tree.c | 14 +++++++++++++-
+ kernel/rcu/tree.c | 18 +++++++++++++-----
kernel/rcu/tree_plugin.h | 8 +++++++-
- 2 files changed, 20 insertions(+), 2 deletions(-)
+ 2 files changed, 20 insertions(+), 6 deletions(-)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -50,6 +50,17 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
void rcu_bh_qs(void)
{
RCU_LOCKDEP_WARN(preemptible(), "rcu_bh_qs() invoked with preemption enabled!!!");
+@@ -255,10 +267,6 @@ void rcu_bh_qs(void)
+ __this_cpu_write(rcu_bh_data.cpu_no_qs.b.norm, false);
+ }
+ }
+-#else
+-void rcu_bh_qs(void)
+-{
+-}
+ #endif
+
+ /*
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -29,6 +29,7 @@
diff --git a/patches/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch b/patches/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch
new file mode 100644
index 000000000000..559af22b2d4c
--- /dev/null
+++ b/patches/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch
@@ -0,0 +1,96 @@
+From: Lukas Wunner <lukas@wunner.de>
+Date: Sat, 27 Oct 2018 10:15:33 +0200
+Subject: [PATCH] pinctrl: bcm2835: Use raw spinlock for RT compatibility
+
+[Upstream commit 71dfaa749f2f7c1722ebf6716d3f797a04528cba]
+
+The BCM2835 pinctrl driver acquires a spinlock in its ->irq_enable,
+->irq_disable and ->irq_set_type callbacks. Spinlocks become sleeping
+locks with CONFIG_PREEMPT_RT_FULL=y, therefore invocation of one of the
+callbacks in atomic context may cause a hard lockup if at least two GPIO
+pins in the same bank are used as interrupts. The issue doesn't occur
+with just a single interrupt pin per bank because the lock is never
+contended. I'm experiencing such lockups with GPIO 8 and 28 used as
+level-triggered interrupts, i.e. with ->irq_disable being invoked on
+reception of every IRQ.
+
+The critical section protected by the spinlock is very small (one bitop
+and one RMW of an MMIO register), hence converting to a raw spinlock
+seems a better trade-off than converting the driver to threaded IRQ
+handling (which would increase latency to handle an interrupt).
+
+Cc: Mathias Duckeck <m.duckeck@kunbus.de>
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Acked-by: Julia Cartwright <julia@ni.com>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -90,7 +90,7 @@ struct bcm2835_pinctrl {
+ struct gpio_chip gpio_chip;
+ struct pinctrl_gpio_range gpio_range;
+
+- spinlock_t irq_lock[BCM2835_NUM_BANKS];
++ raw_spinlock_t irq_lock[BCM2835_NUM_BANKS];
+ };
+
+ /* pins are just named GPIO0..GPIO53 */
+@@ -461,10 +461,10 @@ static void bcm2835_gpio_irq_enable(stru
+ unsigned bank = GPIO_REG_OFFSET(gpio);
+ unsigned long flags;
+
+- spin_lock_irqsave(&pc->irq_lock[bank], flags);
++ raw_spin_lock_irqsave(&pc->irq_lock[bank], flags);
+ set_bit(offset, &pc->enabled_irq_map[bank]);
+ bcm2835_gpio_irq_config(pc, gpio, true);
+- spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
++ raw_spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
+ }
+
+ static void bcm2835_gpio_irq_disable(struct irq_data *data)
+@@ -476,12 +476,12 @@ static void bcm2835_gpio_irq_disable(str
+ unsigned bank = GPIO_REG_OFFSET(gpio);
+ unsigned long flags;
+
+- spin_lock_irqsave(&pc->irq_lock[bank], flags);
++ raw_spin_lock_irqsave(&pc->irq_lock[bank], flags);
+ bcm2835_gpio_irq_config(pc, gpio, false);
+ /* Clear events that were latched prior to clearing event sources */
+ bcm2835_gpio_set_bit(pc, GPEDS0, gpio);
+ clear_bit(offset, &pc->enabled_irq_map[bank]);
+- spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
++ raw_spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
+ }
+
+ static int __bcm2835_gpio_irq_set_type_disabled(struct bcm2835_pinctrl *pc,
+@@ -584,7 +584,7 @@ static int bcm2835_gpio_irq_set_type(str
+ unsigned long flags;
+ int ret;
+
+- spin_lock_irqsave(&pc->irq_lock[bank], flags);
++ raw_spin_lock_irqsave(&pc->irq_lock[bank], flags);
+
+ if (test_bit(offset, &pc->enabled_irq_map[bank]))
+ ret = __bcm2835_gpio_irq_set_type_enabled(pc, gpio, type);
+@@ -596,7 +596,7 @@ static int bcm2835_gpio_irq_set_type(str
+ else
+ irq_set_handler_locked(data, handle_level_irq);
+
+- spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
++ raw_spin_unlock_irqrestore(&pc->irq_lock[bank], flags);
+
+ return ret;
+ }
+@@ -1047,7 +1047,7 @@ static int bcm2835_pinctrl_probe(struct
+ for_each_set_bit(offset, &events, 32)
+ bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
+
+- spin_lock_init(&pc->irq_lock[i]);
++ raw_spin_lock_init(&pc->irq_lock[i]);
+ }
+
+ err = gpiochip_add_data(&pc->gpio_chip, pc);
diff --git a/patches/preempt-lazy-support.patch b/patches/preempt-lazy-support.patch
index dff4755ada32..c399b0aa4718 100644
--- a/patches/preempt-lazy-support.patch
+++ b/patches/preempt-lazy-support.patch
@@ -57,6 +57,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
include/linux/thread_info.h | 12 +++++-
include/linux/trace_events.h | 1
kernel/Kconfig.preempt | 6 +++
+ kernel/cpu.c | 2 +
kernel/sched/core.c | 83 +++++++++++++++++++++++++++++++++++++++++--
kernel/sched/fair.c | 16 ++++----
kernel/sched/features.h | 3 +
@@ -64,7 +65,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/trace/trace.c | 36 ++++++++++--------
kernel/trace/trace.h | 2 +
kernel/trace/trace_output.c | 14 ++++++-
- 12 files changed, 226 insertions(+), 29 deletions(-)
+ 13 files changed, 228 insertions(+), 29 deletions(-)
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -231,6 +232,22 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
choice
prompt "Preemption Model"
default PREEMPT_NONE
+--- a/kernel/cpu.c
++++ b/kernel/cpu.c
+@@ -303,11 +303,13 @@ void pin_current_cpu(void)
+ return;
+ }
+ cpu = smp_processor_id();
++ preempt_lazy_enable();
+ preempt_enable();
+
+ __read_rt_lock(cpuhp_pin);
+
+ preempt_disable();
++ preempt_lazy_disable();
+ if (cpu != smp_processor_id()) {
+ __read_rt_unlock(cpuhp_pin);
+ goto again;
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -492,6 +492,48 @@ void resched_curr(struct rq *rq)
diff --git a/patches/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch b/patches/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
index caeb52ab9c02..962fe570d8b6 100644
--- a/patches/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
+++ b/patches/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
@@ -10,6 +10,7 @@ By default, as a policy decision, disable the expediting of grace
periods (after boot) on configurations which enable PREEMPT_RT_FULL.
Suggested-by: Luiz Capitulino <lcapitulino@redhat.com>
+Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Julia Cartwright <julia@ni.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
diff --git a/patches/rcu-make-RCU_BOOST-default-on-RT.patch b/patches/rcu-make-RCU_BOOST-default-on-RT.patch
index bda5c6289f0a..fa1fb18b8b7e 100644
--- a/patches/rcu-make-RCU_BOOST-default-on-RT.patch
+++ b/patches/rcu-make-RCU_BOOST-default-on-RT.patch
@@ -14,20 +14,13 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/kernel/rcu/Kconfig
+++ b/kernel/rcu/Kconfig
-@@ -36,7 +36,7 @@ config TINY_RCU
+@@ -190,8 +190,8 @@ config RCU_FAST_NO_HZ
- config RCU_EXPERT
- bool "Make expert-level adjustments to RCU configuration"
-- default n
-+ default y if PREEMPT_RT_FULL
- help
- This option needs to be enabled if you wish to make
- expert-level adjustments to RCU configuration. By default,
-@@ -191,7 +191,7 @@ config RCU_FAST_NO_HZ
config RCU_BOOST
bool "Enable RCU priority boosting"
- depends on RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT
+- depends on RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT
- default n
++ depends on (RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT) || PREEMPT_RT_FULL
+ default y if PREEMPT_RT_FULL
help
This option boosts the priority of preempted RCU readers that
diff --git a/patches/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch b/patches/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
index a07b73e88c2b..cf24cb7360c9 100644
--- a/patches/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
+++ b/patches/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
@@ -28,10 +28,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
include/linux/rcutree.h | 8 ++++++++
kernel/rcu/rcu.h | 11 +++++++++--
kernel/rcu/rcutorture.c | 7 +++++++
- kernel/rcu/tree.c | 22 ++++++++++++++++++++++
+ kernel/rcu/tree.c | 26 ++++++++++++++++++++++++++
kernel/rcu/tree.h | 2 ++
kernel/rcu/update.c | 2 ++
- 7 files changed, 69 insertions(+), 2 deletions(-)
+ 7 files changed, 73 insertions(+), 2 deletions(-)
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -181,15 +181,19 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
void rcu_bh_qs(void)
{
RCU_LOCKDEP_WARN(preemptible(), "rcu_bh_qs() invoked with preemption enabled!!!");
-@@ -254,6 +255,7 @@ void rcu_bh_qs(void)
+@@ -254,6 +255,11 @@ void rcu_bh_qs(void)
__this_cpu_write(rcu_bh_data.cpu_no_qs.b.norm, false);
}
}
++#else
++void rcu_bh_qs(void)
++{
++}
+#endif
/*
* Steal a bit from the bottom of ->dynticks for idle entry/exit
-@@ -568,6 +570,7 @@ unsigned long rcu_sched_get_gp_seq(void)
+@@ -568,6 +574,7 @@ unsigned long rcu_sched_get_gp_seq(void)
}
EXPORT_SYMBOL_GPL(rcu_sched_get_gp_seq);
@@ -197,7 +201,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/*
* Return the number of RCU-bh GPs completed thus far for debug & stats.
*/
-@@ -576,6 +579,7 @@ unsigned long rcu_bh_get_gp_seq(void)
+@@ -576,6 +583,7 @@ unsigned long rcu_bh_get_gp_seq(void)
return READ_ONCE(rcu_bh_state.gp_seq);
}
EXPORT_SYMBOL_GPL(rcu_bh_get_gp_seq);
@@ -205,7 +209,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/*
* Return the number of RCU expedited batches completed thus far for
-@@ -599,6 +603,7 @@ unsigned long rcu_exp_batches_completed_
+@@ -599,6 +607,7 @@ unsigned long rcu_exp_batches_completed_
}
EXPORT_SYMBOL_GPL(rcu_exp_batches_completed_sched);
@@ -213,7 +217,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/*
* Force a quiescent state.
*/
-@@ -617,6 +622,13 @@ void rcu_bh_force_quiescent_state(void)
+@@ -617,6 +626,13 @@ void rcu_bh_force_quiescent_state(void)
}
EXPORT_SYMBOL_GPL(rcu_bh_force_quiescent_state);
@@ -227,7 +231,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/*
* Force a quiescent state for RCU-sched.
*/
-@@ -674,9 +686,11 @@ void rcutorture_get_gp_data(enum rcutort
+@@ -674,9 +690,11 @@ void rcutorture_get_gp_data(enum rcutort
case RCU_FLAVOR:
rsp = rcu_state_p;
break;
@@ -239,7 +243,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
case RCU_SCHED_FLAVOR:
rsp = &rcu_sched_state;
break;
-@@ -3040,6 +3054,7 @@ void call_rcu_sched(struct rcu_head *hea
+@@ -3040,6 +3058,7 @@ void call_rcu_sched(struct rcu_head *hea
}
EXPORT_SYMBOL_GPL(call_rcu_sched);
@@ -247,7 +251,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/**
* call_rcu_bh() - Queue an RCU for invocation after a quicker grace period.
* @head: structure to be used for queueing the RCU updates.
-@@ -3067,6 +3082,7 @@ void call_rcu_bh(struct rcu_head *head,
+@@ -3067,6 +3086,7 @@ void call_rcu_bh(struct rcu_head *head,
__call_rcu(head, func, &rcu_bh_state, -1, 0);
}
EXPORT_SYMBOL_GPL(call_rcu_bh);
@@ -255,7 +259,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/*
* Queue an RCU callback for lazy invocation after a grace period.
-@@ -3152,6 +3168,7 @@ void synchronize_sched(void)
+@@ -3152,6 +3172,7 @@ void synchronize_sched(void)
}
EXPORT_SYMBOL_GPL(synchronize_sched);
@@ -263,7 +267,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/**
* synchronize_rcu_bh - wait until an rcu_bh grace period has elapsed.
*
-@@ -3178,6 +3195,7 @@ void synchronize_rcu_bh(void)
+@@ -3178,6 +3199,7 @@ void synchronize_rcu_bh(void)
wait_rcu_gp(call_rcu_bh);
}
EXPORT_SYMBOL_GPL(synchronize_rcu_bh);
@@ -271,7 +275,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/**
* get_state_synchronize_rcu - Snapshot current RCU state
-@@ -3485,6 +3503,7 @@ static void _rcu_barrier(struct rcu_stat
+@@ -3485,6 +3507,7 @@ static void _rcu_barrier(struct rcu_stat
mutex_unlock(&rsp->barrier_mutex);
}
@@ -279,7 +283,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/**
* rcu_barrier_bh - Wait until all in-flight call_rcu_bh() callbacks complete.
*/
-@@ -3493,6 +3512,7 @@ void rcu_barrier_bh(void)
+@@ -3493,6 +3516,7 @@ void rcu_barrier_bh(void)
_rcu_barrier(&rcu_bh_state);
}
EXPORT_SYMBOL_GPL(rcu_barrier_bh);
@@ -287,7 +291,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/**
* rcu_barrier_sched - Wait for in-flight call_rcu_sched() callbacks.
-@@ -4140,7 +4160,9 @@ void __init rcu_init(void)
+@@ -4140,7 +4164,9 @@ void __init rcu_init(void)
rcu_bootup_announce();
rcu_init_geometry();
diff --git a/patches/rtmutex-Provide-rt_mutex_slowlock_locked.patch b/patches/rtmutex-Provide-rt_mutex_slowlock_locked.patch
index 13e80368b3a5..7bef860443d8 100644
--- a/patches/rtmutex-Provide-rt_mutex_slowlock_locked.patch
+++ b/patches/rtmutex-Provide-rt_mutex_slowlock_locked.patch
@@ -8,8 +8,8 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/locking/rtmutex.c | 67 ++++++++++++++++++++++------------------
- kernel/locking/rtmutex_common.h | 6 +++
- 2 files changed, 44 insertions(+), 29 deletions(-)
+ kernel/locking/rtmutex_common.h | 7 ++++
+ 2 files changed, 45 insertions(+), 29 deletions(-)
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -113,7 +113,15 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
-@@ -159,6 +159,12 @@ extern bool __rt_mutex_futex_unlock(stru
+@@ -15,6 +15,7 @@
+
+ #include <linux/rtmutex.h>
+ #include <linux/sched/wake_q.h>
++#include <linux/sched/debug.h>
+
+ /*
+ * This is the control structure for tasks blocked on a rt_mutex,
+@@ -159,6 +160,12 @@ extern bool __rt_mutex_futex_unlock(stru
struct wake_q_head *wqh);
extern void rt_mutex_postunlock(struct wake_q_head *wake_q);
diff --git a/patches/rtmutex-add-sleeping-lock-implementation.patch b/patches/rtmutex-add-sleeping-lock-implementation.patch
index f6358fa79664..06083df1b175 100644
--- a/patches/rtmutex-add-sleeping-lock-implementation.patch
+++ b/patches/rtmutex-add-sleeping-lock-implementation.patch
@@ -14,9 +14,9 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
kernel/fork.c | 1
kernel/futex.c | 11
kernel/locking/rtmutex.c | 436 ++++++++++++++++++++++++++++++++++----
- kernel/locking/rtmutex_common.h | 15 +
+ kernel/locking/rtmutex_common.h | 14 -
kernel/sched/core.c | 28 +-
- 11 files changed, 696 insertions(+), 59 deletions(-)
+ 11 files changed, 695 insertions(+), 59 deletions(-)
create mode 100644 include/linux/spinlock_rt.h
create mode 100644 include/linux/spinlock_types_rt.h
@@ -1076,15 +1076,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
return ret;
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
-@@ -15,6 +15,7 @@
-
- #include <linux/rtmutex.h>
- #include <linux/sched/wake_q.h>
-+#include <linux/sched/debug.h>
-
- /*
- * This is the control structure for tasks blocked on a rt_mutex,
-@@ -29,6 +30,7 @@ struct rt_mutex_waiter {
+@@ -30,6 +30,7 @@ struct rt_mutex_waiter {
struct rb_node pi_tree_entry;
struct task_struct *task;
struct rt_mutex *lock;
@@ -1092,7 +1084,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
#ifdef CONFIG_DEBUG_RT_MUTEXES
unsigned long ip;
struct pid *deadlock_task_pid;
-@@ -138,7 +140,7 @@ extern void rt_mutex_init_proxy_locked(s
+@@ -139,7 +140,7 @@ extern void rt_mutex_init_proxy_locked(s
struct task_struct *proxy_owner);
extern void rt_mutex_proxy_unlock(struct rt_mutex *lock,
struct task_struct *proxy_owner);
@@ -1101,7 +1093,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
extern int __rt_mutex_start_proxy_lock(struct rt_mutex *lock,
struct rt_mutex_waiter *waiter,
struct task_struct *task);
-@@ -156,9 +158,12 @@ extern int __rt_mutex_futex_trylock(stru
+@@ -157,9 +158,12 @@ extern int __rt_mutex_futex_trylock(stru
extern void rt_mutex_futex_unlock(struct rt_mutex *lock);
extern bool __rt_mutex_futex_unlock(struct rt_mutex *lock,
@@ -1116,7 +1108,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* RW semaphore special interface */
extern int __rt_mutex_lock_state(struct rt_mutex *lock, int state);
-@@ -168,6 +173,10 @@ int __sched rt_mutex_slowlock_locked(str
+@@ -169,6 +173,10 @@ int __sched rt_mutex_slowlock_locked(str
struct hrtimer_sleeper *timeout,
enum rtmutex_chainwalk chwalk,
struct rt_mutex_waiter *waiter);
diff --git a/patches/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch b/patches/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch
index 0998821b7248..382dd176710a 100644
--- a/patches/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch
+++ b/patches/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch
@@ -4,10 +4,10 @@ Subject: rtmutex: add ww_mutex addon for mutex-rt
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
- kernel/locking/rtmutex.c | 269 ++++++++++++++++++++++++++++++++++++++--
+ kernel/locking/rtmutex.c | 271 ++++++++++++++++++++++++++++++++++++++--
kernel/locking/rtmutex_common.h | 2
kernel/locking/rwsem-rt.c | 2
- 3 files changed, 260 insertions(+), 13 deletions(-)
+ 3 files changed, 261 insertions(+), 14 deletions(-)
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -277,6 +277,15 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
static inline int
+@@ -1833,7 +1981,7 @@ rt_mutex_fastunlock(struct rt_mutex *loc
+ int __sched __rt_mutex_lock_state(struct rt_mutex *lock, int state)
+ {
+ might_sleep();
+- return rt_mutex_fastlock(lock, state, rt_mutex_slowlock);
++ return rt_mutex_fastlock(lock, state, NULL, rt_mutex_slowlock);
+ }
+
+ /**
@@ -1953,6 +2101,7 @@ rt_mutex_timed_lock(struct rt_mutex *loc
mutex_acquire(&lock->dep_map, 0, 0, _RET_IP_);
ret = rt_mutex_timed_fastlock(lock, TASK_INTERRUPTIBLE, timeout,
diff --git a/patches/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch b/patches/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch
index 02c9c5394da8..aa364eeb269d 100644
--- a/patches/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch
+++ b/patches/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch
@@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+int __sched __rt_mutex_lock_state(struct rt_mutex *lock, int state)
{
might_sleep();
-+ return rt_mutex_fastlock(lock, state, NULL, rt_mutex_slowlock);
++ return rt_mutex_fastlock(lock, state, rt_mutex_slowlock);
+}
+
+/**
@@ -132,7 +132,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
-@@ -161,6 +161,9 @@ extern bool __rt_mutex_futex_unlock(stru
+@@ -162,6 +162,9 @@ extern bool __rt_mutex_futex_unlock(stru
extern void rt_mutex_postunlock(struct wake_q_head *wake_q);
/* RW semaphore special interface */
diff --git a/patches/series b/patches/series
index e86026944b8e..55976c4bf80c 100644
--- a/patches/series
+++ b/patches/series
@@ -10,17 +10,20 @@
# POSTED by others
############################################################
# AT91
-# Alexandre Belloni | [PATCH v4 0/6] clocksource: rework Atmel TCB timer driver
-# Date: Wed, 18 Apr 2018 12:51:37 +0200
+# Alexandre Belloni | [PATCH v7 0/7] clocksource: rework Atmel TCB timer driver
+# Date: Thu, 13 Sep 2018 13:30:18 +0200
0001-ARM-at91-add-TCB-registers-definitions.patch
0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch
-0003-clocksource-drivers-atmel-pit-make-option-silent.patch
-0004-ARM-at91-Implement-clocksource-selection.patch
-0005-ARM-configs-at91-use-new-TCB-timer-driver.patch
-0006-ARM-configs-at91-unselect-PIT.patch
+0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch
+0004-clocksource-drivers-atmel-pit-make-option-silent.patch
+0005-ARM-at91-Implement-clocksource-selection.patch
+0006-ARM-configs-at91-use-new-TCB-timer-driver.patch
+0007-ARM-configs-at91-unselect-PIT.patch
irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch
kthread-convert-worker-lock-to-raw-spinlock.patch
+pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch
+crypto-caam-qi-simplify-CGR-allocation-freeing.patch
############################################################
# POSTED
@@ -83,7 +86,6 @@ usb-do-not-disable-interrupts-in-giveback.patch
# Kconfig on/off
rt-preempt-base-config.patch
-kconfig-preempt-rt-full.patch
cpumask-disable-offstack-on-rt.patch
jump-label-rt.patch
kconfig-disable-a-few-options-rt.patch
@@ -243,6 +245,8 @@ rtmutex-add-rwsem-implementation-based-on-rtmutex.patch
rtmutex-add-rwlock-implementation-based-on-rtmutex.patch
rtmutex-wire-up-RT-s-locking.patch
rtmutex-add-ww_mutex-addon-for-mutex-rt.patch
+# Allow to enable RT-FULL after sleeping spinlocks are wired up
+kconfig-preempt-rt-full.patch
locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch
locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch
ptrace-fix-ptrace-vs-tasklist_lock-race.patch
diff --git a/patches/skbufhead-raw-lock.patch b/patches/skbufhead-raw-lock.patch
index fa90be782684..98d46e41739f 100644
--- a/patches/skbufhead-raw-lock.patch
+++ b/patches/skbufhead-raw-lock.patch
@@ -90,7 +90,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
static void flush_all_backlogs(void)
-@@ -5827,7 +5830,9 @@ static int process_backlog(struct napi_s
+@@ -5828,7 +5831,9 @@ static int process_backlog(struct napi_s
while (again) {
struct sk_buff *skb;
@@ -100,7 +100,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
rcu_read_lock();
__netif_receive_skb(skb);
rcu_read_unlock();
-@@ -5835,9 +5840,9 @@ static int process_backlog(struct napi_s
+@@ -5836,9 +5841,9 @@ static int process_backlog(struct napi_s
if (++work >= quota)
return work;
@@ -111,7 +111,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
rps_lock(sd);
if (skb_queue_empty(&sd->input_pkt_queue)) {
/*
-@@ -6299,13 +6304,21 @@ static __latent_entropy void net_rx_acti
+@@ -6300,13 +6305,21 @@ static __latent_entropy void net_rx_acti
unsigned long time_limit = jiffies +
usecs_to_jiffies(netdev_budget_usecs);
int budget = netdev_budget;
@@ -133,7 +133,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
for (;;) {
struct napi_struct *n;
-@@ -9291,10 +9304,13 @@ static int dev_cpu_dead(unsigned int old
+@@ -9292,10 +9305,13 @@ static int dev_cpu_dead(unsigned int old
netif_rx_ni(skb);
input_queue_head_incr(oldsd);
}
@@ -148,7 +148,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
return 0;
}
-@@ -9603,8 +9619,9 @@ static int __init net_dev_init(void)
+@@ -9604,8 +9620,9 @@ static int __init net_dev_init(void)
INIT_WORK(flush, flush_backlog);
diff --git a/patches/softirq-preempt-fix-3-re.patch b/patches/softirq-preempt-fix-3-re.patch
index 72f8d80b5669..95f8d3edcb46 100644
--- a/patches/softirq-preempt-fix-3-re.patch
+++ b/patches/softirq-preempt-fix-3-re.patch
@@ -135,7 +135,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
atomic_long_inc(&skb->dev->rx_dropped);
kfree_skb(skb);
-@@ -5789,12 +5792,14 @@ static void net_rps_action_and_irq_enabl
+@@ -5790,12 +5793,14 @@ static void net_rps_action_and_irq_enabl
sd->rps_ipi_list = NULL;
local_irq_enable();
@@ -150,7 +150,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
static bool sd_has_rps_ipi_waiting(struct softnet_data *sd)
-@@ -5872,6 +5877,7 @@ void __napi_schedule(struct napi_struct
+@@ -5873,6 +5878,7 @@ void __napi_schedule(struct napi_struct
local_irq_save(flags);
____napi_schedule(this_cpu_ptr(&softnet_data), n);
local_irq_restore(flags);
@@ -158,7 +158,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
EXPORT_SYMBOL(__napi_schedule);
-@@ -9273,6 +9279,7 @@ static int dev_cpu_dead(unsigned int old
+@@ -9274,6 +9280,7 @@ static int dev_cpu_dead(unsigned int old
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_enable();
diff --git a/patches/srcu-use-cpu_online-instead-custom-check.patch b/patches/srcu-use-cpu_online-instead-custom-check.patch
index 0b7924b7cd08..af2e8c6ae603 100644
--- a/patches/srcu-use-cpu_online-instead-custom-check.patch
+++ b/patches/srcu-use-cpu_online-instead-custom-check.patch
@@ -11,9 +11,6 @@ on a specific CPU or not. queue_work_on() itself can handle if something
is enqueued on an offline CPU but a timer which is enqueued on an offline
CPU won't fire until the CPU is back online.
-I am not sure if the removal in rcu_init() is okay or not. I assume that
-SRCU won't enqueue a work item before SRCU is up and ready.
-
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/rcu/srcutree.c | 22 ++++------------------