diff options
Diffstat (limited to 'debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch')
| -rw-r--r-- | debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch b/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch index 471f5a9c7..46a555e41 100644 --- a/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch +++ b/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:46 +0100 Subject: [PATCH 08/25] printk: add ring buffer and kthread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.3-rt1.tar.xz The printk ring buffer provides an NMI-safe interface for writing messages to a ring buffer. Using such a buffer for alleviates printk @@ -35,7 +35,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> #include <linux/sched/clock.h> #include <linux/sched/debug.h> #include <linux/sched/task_stack.h> -@@ -407,7 +409,12 @@ DEFINE_RAW_SPINLOCK(logbuf_lock); +@@ -417,7 +419,12 @@ DEFINE_RAW_SPINLOCK(logbuf_lock); printk_safe_exit_irqrestore(flags); \ } while (0) @@ -48,7 +48,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> DECLARE_WAIT_QUEUE_HEAD(log_wait); /* the next printk record to read by syslog(READ) or /proc/kmsg */ static u64 syslog_seq; -@@ -770,6 +777,10 @@ static ssize_t msg_print_ext_body(char * +@@ -780,6 +787,10 @@ static ssize_t msg_print_ext_body(char * return p - buf; } @@ -59,7 +59,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* /dev/kmsg - userspace message inject/listen interface */ struct devkmsg_user { u64 seq; -@@ -1610,6 +1621,34 @@ SYSCALL_DEFINE3(syslog, int, type, char +@@ -1620,6 +1631,34 @@ SYSCALL_DEFINE3(syslog, int, type, char return do_syslog(type, buf, len, SYSLOG_FROM_READER); } @@ -94,7 +94,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * Special console_lock variants that help to reduce the risk of soft-lockups. * They allow to pass console_lock to another printk() call using a busy wait. -@@ -2964,6 +3003,72 @@ void wake_up_klogd(void) +@@ -2974,6 +3013,72 @@ void wake_up_klogd(void) preempt_enable(); } |