The following commit has been merged into the sched/rt branch of tip:
Commit-ID: 864c25c83d834bdf2cb5a24c768d37236b418410
Gitweb: https://git.kernel.org/tip/864c25c83d834bdf2cb5a24c768d37236b418410
Author: John Ogness <john.ogness@xxxxxxxxxxxxx>
AuthorDate: Tue, 20 Aug 2024 08:35:42 +02:06
Committer: Petr Mladek <pmladek@xxxxxxxx>
CommitterDate: Wed, 21 Aug 2024 14:56:23 +02:00
printk: Make console_is_usable() available to nbcon.c
Move console_is_usable() as-is into internal.h so that it can
be used by nbcon printing functions as well.
Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Link: https://lore.kernel.org/r/20240820063001.36405-17-john.ogness@xxxxxxxxxxxxx
Signed-off-by: Petr Mladek <pmladek@xxxxxxxx>
---
kernel/printk/internal.h | 32 ++++++++++++++++++++++++++++++++
kernel/printk/printk.c | 30 ------------------------------
2 files changed, 32 insertions(+), 30 deletions(-)
diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
index ccb9166..5d9deb5 100644
--- a/kernel/printk/internal.h
+++ b/kernel/printk/internal.h
@@ -84,6 +84,36 @@ void nbcon_seq_force(struct console *con, u64 seq);
bool nbcon_alloc(struct console *con);
void nbcon_free(struct console *con);
+/*
+ * Check if the given console is currently capable and allowed to print
+ * records.
+ *
+ * Requires the console_srcu_read_lock.
+ */
+static inline bool console_is_usable(struct console *con)
+{
+ short flags = console_srcu_read_flags(con);
+
+ if (!(flags & CON_ENABLED))
+ return false;
+
+ if ((flags & CON_SUSPENDED))
+ return false;
+
+ if (!con->write)
+ return false;
+
+ /*
+ * Console drivers may assume that per-cpu resources have been
+ * allocated. So unless they're explicitly marked as being able to
+ * cope (CON_ANYTIME) don't call them until this CPU is officially up.
+ */
+ if (!cpu_online(raw_smp_processor_id()) && !(flags & CON_ANYTIME))
+ return false;
+
+ return true;
+}
+
#else
#define PRINTK_PREFIX_MAX 0
@@ -104,6 +134,8 @@ static inline void nbcon_seq_force(struct console *con, u64 seq) { }
static inline bool nbcon_alloc(struct console *con) { return false; }
static inline void nbcon_free(struct console *con) { }
+static inline bool console_is_usable(struct console *con) { return false; }
+
#endif /* CONFIG_PRINTK */
extern struct printk_buffers printk_shared_pbufs;
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 4cd2c50..b9c8fff 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2767,36 +2767,6 @@ int is_console_locked(void)
}
EXPORT_SYMBOL(is_console_locked);
-/*
- * Check if the given console is currently capable and allowed to print
- * records.
- *
- * Requires the console_srcu_read_lock.
- */
-static inline bool console_is_usable(struct console *con)
-{
- short flags = console_srcu_read_flags(con);
-
- if (!(flags & CON_ENABLED))
- return false;
-
- if ((flags & CON_SUSPENDED))
- return false;
-
- if (!con->write)
- return false;
-
- /*
- * Console drivers may assume that per-cpu resources have been
- * allocated. So unless they're explicitly marked as being able to
- * cope (CON_ANYTIME) don't call them until this CPU is officially up.
- */
- if (!cpu_online(raw_smp_processor_id()) && !(flags & CON_ANYTIME))
- return false;
-
- return true;
-}
-
static void __console_unlock(void)
{
console_locked = 0;
|