diff options
| author | Marcos Paulo de Souza <mpdesouza@suse.com> | 2025-10-16 11:47:57 -0300 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2025-10-24 12:56:19 +0200 |
| commit | 4349cf0df34f37d2470d246bc9be8d9836dfa49e (patch) | |
| tree | ab37c776ac3c95143ce55a25a4277fdcb5520d69 | |
| parent | 286b113d70007e932d18aa0acfce1a3f5b25d8d1 (diff) | |
printk: nbcon: Export nbcon_write_context_set_buf
This function will be used in the next patch to allow a driver to set
both the message and message length of a nbcon_write_context. This is
necessary because the function also initializes the ->unsafe_takeover
struct member. By using this helper we ensure that the struct is
initialized correctly.
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Link: https://patch.msgid.link/20251016-nbcon-kgdboc-v6-4-866aac60a80e@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
| -rw-r--r-- | include/linux/console.h | 4 | ||||
| -rw-r--r-- | kernel/printk/nbcon.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/console.h b/include/linux/console.h index 9406342b27db..4585eb8e109e 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -603,6 +603,8 @@ static inline bool console_is_registered(const struct console *con) extern void nbcon_cpu_emergency_enter(void); extern void nbcon_cpu_emergency_exit(void); extern bool nbcon_can_proceed(struct nbcon_write_context *wctxt); +extern void nbcon_write_context_set_buf(struct nbcon_write_context *wctxt, + char *buf, unsigned int len); extern bool nbcon_enter_unsafe(struct nbcon_write_context *wctxt); extern bool nbcon_exit_unsafe(struct nbcon_write_context *wctxt); extern void nbcon_reacquire_nobuf(struct nbcon_write_context *wctxt); @@ -655,6 +657,8 @@ static inline bool console_is_usable(struct console *con, short flags, bool use_ static inline void nbcon_cpu_emergency_enter(void) { } static inline void nbcon_cpu_emergency_exit(void) { } static inline bool nbcon_can_proceed(struct nbcon_write_context *wctxt) { return false; } +static inline void nbcon_write_context_set_buf(struct nbcon_write_context *wctxt, + char *buf, unsigned int len) { } static inline bool nbcon_enter_unsafe(struct nbcon_write_context *wctxt) { return false; } static inline bool nbcon_exit_unsafe(struct nbcon_write_context *wctxt) { return false; } static inline void nbcon_reacquire_nobuf(struct nbcon_write_context *wctxt) { } diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c index 5be018493909..fdd1cbebe77d 100644 --- a/kernel/printk/nbcon.c +++ b/kernel/printk/nbcon.c @@ -854,8 +854,8 @@ out: return nbcon_context_can_proceed(ctxt, &cur); } -static void nbcon_write_context_set_buf(struct nbcon_write_context *wctxt, - char *buf, unsigned int len) +void nbcon_write_context_set_buf(struct nbcon_write_context *wctxt, + char *buf, unsigned int len) { struct nbcon_context *ctxt = &ACCESS_PRIVATE(wctxt, ctxt); struct console *con = ctxt->console; |