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Message-ID: <20161108175955.313045ab@gandalf.local.home>
Date: Tue, 8 Nov 2016 17:59:55 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>,
linux-rt-users <linux-rt-users@...r.kernel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Carsten Emde <C.Emde@...dl.org>,
John Kacur <jkacur@...hat.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [ANNOUNCE] 4.1.35-rt41
Dear RT Folks,
I'm pleased to announce the 4.1.35-rt41 stable release.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v4.1-rt
Head SHA1: a19daf348d222168ba92752adf897c657ab597c3
Or to build 4.1.35-rt41 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.1.tar.xz
http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.1.35.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/patch-4.1.35-rt41.patch.xz
You can also build from 4.1.35-rt40 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.35-rt40-rt41.patch.xz
Enjoy,
-- Steve
Changes from v4.1.35-rt40:
---
Mike Galbraith (1):
ftrace: Fix trace header alignment
Sebastian Andrzej Siewior (3):
zsmalloc: turn that get_cpu_light() into a local_lock()
x86/apic: get rid of "warning: 'acpi_ioapic_lock' defined but not used"
kbuild: add -fno-PIE
Steven Rostedt (Red Hat) (1):
Linux 4.1.35-rt41
----
Makefile | 2 +-
arch/x86/kernel/acpi/boot.c | 2 ++
kernel/trace/trace.c | 32 ++++++++++++++++----------------
localversion-rt | 2 +-
mm/zsmalloc.c | 6 ++++--
5 files changed, 24 insertions(+), 20 deletions(-)
---------------------------
diff --git a/Makefile b/Makefile
index 21f657f2c4e6..384ef0e05826 100644
--- a/Makefile
+++ b/Makefile
@@ -400,7 +400,7 @@ KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-Werror-implicit-function-declaration \
- -Wno-format-security \
+ -Wno-format-security -fno-PIE \
-std=gnu89
KBUILD_AFLAGS_KERNEL :=
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 07bea80223f6..cb66b0ea2d68 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -87,7 +87,9 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
* ->ioapic_mutex
* ->ioapic_lock
*/
+#ifdef CONFIG_X86_IO_APIC
static DEFINE_MUTEX(acpi_ioapic_lock);
+#endif
/* --------------------------------------------------------------------------
Boot-time Configuration
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index af8b5e5469bf..9c5e5f8e61f5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2562,17 +2562,17 @@ get_total_entries(struct trace_buffer *buf,
static void print_lat_help_header(struct seq_file *m)
{
- seq_puts(m, "# _--------=> CPU# \n"
- "# / _-------=> irqs-off \n"
- "# | / _------=> need-resched \n"
- "# || / _-----=> need-resched_lazy \n"
- "# ||| / _----=> hardirq/softirq \n"
- "# |||| / _---=> preempt-depth \n"
- "# ||||| / _--=> preempt-lazy-depth\n"
- "# |||||| / _-=> migrate-disable \n"
- "# ||||||| / delay \n"
- "# cmd pid |||||||| time | caller \n"
- "# \\ / |||||||| \\ | / \n");
+ seq_puts(m, "# _--------=> CPU# \n"
+ "# / _-------=> irqs-off \n"
+ "# | / _------=> need-resched \n"
+ "# || / _-----=> need-resched_lazy \n"
+ "# ||| / _----=> hardirq/softirq \n"
+ "# |||| / _---=> preempt-depth \n"
+ "# ||||| / _--=> preempt-lazy-depth\n"
+ "# |||||| / _-=> migrate-disable \n"
+ "# ||||||| / delay \n"
+ "# cmd pid |||||||| time | caller \n"
+ "# \\ / |||||||| \\ | / \n");
}
static void print_event_info(struct trace_buffer *buf, struct seq_file *m)
@@ -2601,11 +2601,11 @@ static void print_func_help_header_irq(struct trace_buffer *buf, struct seq_file
"# |/ _-----=> need-resched_lazy\n"
"# || / _---=> hardirq/softirq\n"
"# ||| / _--=> preempt-depth\n"
- "# |||| /_--=> preempt-lazy-depth\n"
- "# ||||| _-=> migrate-disable \n"
- "# ||||| / delay\n"
- "# TASK-PID CPU# |||||| TIMESTAMP FUNCTION\n"
- "# | | | |||||| | |\n");
+ "# |||| / _-=> preempt-lazy-depth\n"
+ "# ||||| / _-=> migrate-disable \n"
+ "# |||||| / delay\n"
+ "# TASK-PID CPU# ||||||| TIMESTAMP FUNCTION\n"
+ "# | | | ||||||| | |\n");
}
void
diff --git a/localversion-rt b/localversion-rt
index 2af6c89aee6d..629e0b4384b8 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt40
+-rt41
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index e819dffd142c..873d9bdb94fd 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -68,6 +68,7 @@
#include <linux/debugfs.h>
#include <linux/zsmalloc.h>
#include <linux/zpool.h>
+#include <linux/locallock.h>
/*
* This must be power of 2 and greater than of equal to sizeof(link_free).
@@ -398,6 +399,7 @@ static unsigned int get_maxobj_per_zspage(int size, int pages_per_zspage)
/* per-cpu VM mapping areas for zspage accesses that cross page boundaries */
static DEFINE_PER_CPU(struct mapping_area, zs_map_area);
+static DEFINE_LOCAL_IRQ_LOCK(zs_map_area_lock);
static int is_first_page(struct page *page)
{
@@ -1289,7 +1291,7 @@ void *zs_map_object(struct zs_pool *pool, unsigned long handle,
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
- area = per_cpu_ptr(&zs_map_area, get_cpu_light());
+ area = &get_locked_var(zs_map_area_lock, zs_map_area);
area->vm_mm = mm;
if (off + class->size <= PAGE_SIZE) {
/* this object is contained entirely within a page */
@@ -1342,7 +1344,7 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
__zs_unmap_object(area, pages, off, class->size);
}
- put_cpu_light();
+ put_locked_var(zs_map_area_lock, zs_map_area);
unpin_tag(handle);
}
EXPORT_SYMBOL_GPL(zs_unmap_object);
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