Messages in this thread Patch in this message | | | Date | Sat, 6 Oct 2007 21:13:55 +0200 (CEST) | From | Jan Engelhardt <> | Subject | [PATCH 2/2] Colored kernel output (run2) |
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Colored kernel message output (2/2)
By popular request, this patch adds per-loglevel coloring. The user may set values using vt.printk_color= or by modifying the sysfs file in the running system.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
--- arch/x86_64/kernel/early_printk.c | 11 +++++++---- drivers/char/Kconfig | 4 +++- drivers/char/vt.c | 30 +++++++++++++++++++++++------- drivers/net/netconsole.c | 3 ++- drivers/serial/8250.c | 3 ++- drivers/serial/8250_early.c | 3 ++- include/linux/console.h | 2 +- kernel/printk.c | 12 +++++++----- 8 files changed, 47 insertions(+), 21 deletions(-)
Index: linux-2.6.23/arch/x86_64/kernel/early_printk.c =================================================================== --- linux-2.6.23.orig/arch/x86_64/kernel/early_printk.c +++ linux-2.6.23/arch/x86_64/kernel/early_printk.c @@ -20,7 +20,8 @@ static int max_ypos = 25, max_xpos = 80; static int current_ypos = 25, current_xpos = 0; -static void early_vga_write(struct console *con, const char *str, unsigned n) +static void early_vga_write(struct console *con, const char *str, unsigned n, + unsigned int loglevel) { char c; int i, k, j; @@ -89,7 +90,8 @@ static int early_serial_putc(unsigned ch return timeout ? 0 : -1; } -static void early_serial_write(struct console *con, const char *s, unsigned n) +static void early_serial_write(struct console *con, const char *s, unsigned n, + unsigned int loglevel) { while (*s && n-- > 0) { if (*s == '\n') @@ -185,7 +187,8 @@ static void __init simnow_init(char *str simnow_fd = simnow(XOPEN, (unsigned long)fn, O_WRONLY|O_APPEND|O_CREAT, 0644); } -static void simnow_write(struct console *con, const char *s, unsigned n) +static void simnow_write(struct console *con, const char *s, unsigned n, + unsigned int loglevel) { simnow(XWRITE, simnow_fd, (unsigned long)s, n); } @@ -209,7 +212,7 @@ void early_printk(const char *fmt, ...) va_start(ap,fmt); n = vscnprintf(buf,512,fmt,ap); - early_console->write(early_console,buf,n); + early_console->write(early_console, buf, n, 0); va_end(ap); } Index: linux-2.6.23/drivers/char/Kconfig =================================================================== --- linux-2.6.23.orig/drivers/char/Kconfig +++ linux-2.6.23/drivers/char/Kconfig @@ -65,7 +65,9 @@ config VT_PRINTK_COLOR default 0x07 ---help--- This option defines with which color kernel messages will be - printed to the console. + printed to the console. This applies to all log levels. + Colors for independent log levels can be set using the + vt.printk_color runtime option. The value you need to enter here is the value is composed (OR-ed) of a foreground and a background color. Index: linux-2.6.23/drivers/char/vt.c =================================================================== --- linux-2.6.23.orig/drivers/char/vt.c +++ linux-2.6.23/drivers/char/vt.c @@ -2345,8 +2345,17 @@ struct tty_driver *console_driver; #ifdef CONFIG_VT_CONSOLE -static unsigned int printk_color __read_mostly = CONFIG_VT_PRINTK_COLOR; -module_param(printk_color, uint, S_IRUGO | S_IWUSR); +static unsigned int printk_color[] __read_mostly = { + CONFIG_VT_PRINTK_COLOR, /* KERN_EMERG */ + CONFIG_VT_PRINTK_COLOR, /* KERN_ALERT */ + CONFIG_VT_PRINTK_COLOR, /* KERN_CRIT */ + CONFIG_VT_PRINTK_COLOR, /* KERN_ERR */ + CONFIG_VT_PRINTK_COLOR, /* KERN_WARNING */ + CONFIG_VT_PRINTK_COLOR, /* KERN_NOTICE */ + CONFIG_VT_PRINTK_COLOR, /* KERN_INFO */ + CONFIG_VT_PRINTK_COLOR, /* KERN_DEBUG */ +}; +module_param_array(printk_color, uint, NULL, S_IRUGO | S_IWUSR); static inline void vc_set_color(struct vc_data *vc, unsigned char color) { @@ -2362,10 +2371,11 @@ static inline void vc_set_color(struct v * The console must be locked when we get here. */ -static void vt_console_print(struct console *co, const char *b, unsigned count) +static void vt_console_print(struct console *co, const char *b, unsigned count, + unsigned int loglevel) { struct vc_data *vc = vc_cons[fg_console].d; - unsigned char c; + unsigned char current_color, c; static unsigned long printing; const ushort *start; ushort cnt = 0; @@ -2396,7 +2406,13 @@ static void vt_console_print(struct cons hide_cursor(vc); start = (ushort *)vc->vc_pos; - vc_set_color(vc, printk_color); + + /* + * We always get a valid loglevel - <8> and "no level" is transformed + * to <4> in the typical kernel. + */ + current_color = printk_color[loglevel]; + vc_set_color(vc, current_color); /* Contrived structure to try to emulate original need_wrap behaviour * Problems caused when we have need_wrap set on '\n' character */ @@ -2416,7 +2432,7 @@ static void vt_console_print(struct cons bs(vc); start = (ushort *)vc->vc_pos; myx = vc->vc_x; - vc_set_color(vc, printk_color); + vc_set_color(vc, current_color); continue; } if (c != 13) @@ -2424,7 +2440,7 @@ static void vt_console_print(struct cons cr(vc); start = (ushort *)vc->vc_pos; myx = vc->vc_x; - vc_set_color(vc, printk_color); + vc_set_color(vc, current_color); if (c == 10 || c == 13) continue; } Index: linux-2.6.23/drivers/net/netconsole.c =================================================================== --- linux-2.6.23.orig/drivers/net/netconsole.c +++ linux-2.6.23/drivers/net/netconsole.c @@ -65,7 +65,8 @@ static int configured = 0; #define MAX_PRINT_CHUNK 1000 -static void write_msg(struct console *con, const char *msg, unsigned int len) +static void write_msg(struct console *con, const char *msg, unsigned int len, + unsigned int loglevel) { int frag, left; unsigned long flags; Index: linux-2.6.23/drivers/serial/8250.c =================================================================== --- linux-2.6.23.orig/drivers/serial/8250.c +++ linux-2.6.23/drivers/serial/8250.c @@ -2464,7 +2464,8 @@ static void serial8250_console_putchar(s * The console_lock must be held when we get here. */ static void -serial8250_console_write(struct console *co, const char *s, unsigned int count) +serial8250_console_write(struct console *co, const char *s, unsigned int count, + unsigned int loglevel) { struct uart_8250_port *up = &serial8250_ports[co->index]; unsigned long flags; Index: linux-2.6.23/drivers/serial/8250_early.c =================================================================== --- linux-2.6.23.orig/drivers/serial/8250_early.c +++ linux-2.6.23/drivers/serial/8250_early.c @@ -82,7 +82,8 @@ static void __init putc(struct uart_port serial_out(port, UART_TX, c); } -static void __init early_serial8250_write(struct console *console, const char *s, unsigned int count) +static void __init early_serial8250_write(struct console *console, + const char *s, unsigned int count, unsigned int loglevel) { struct uart_port *port = &early_device.port; unsigned int ier; Index: linux-2.6.23/include/linux/console.h =================================================================== --- linux-2.6.23.orig/include/linux/console.h +++ linux-2.6.23/include/linux/console.h @@ -93,7 +93,7 @@ void give_up_console(const struct consw struct console { char name[16]; - void (*write)(struct console *, const char *, unsigned); + void (*write)(struct console *, const char *, unsigned, unsigned int); int (*read)(struct console *, char *, unsigned); struct tty_driver *(*device)(struct console *, int *); void (*unblank)(void); Index: linux-2.6.23/kernel/printk.c =================================================================== --- linux-2.6.23.orig/kernel/printk.c +++ linux-2.6.23/kernel/printk.c @@ -320,7 +320,8 @@ asmlinkage long sys_syslog(int type, cha /* * Call the console drivers on a range of log_buf */ -static void __call_console_drivers(unsigned long start, unsigned long end) +static void __call_console_drivers(unsigned long start, unsigned long end, + unsigned int loglevel) { struct console *con; @@ -328,7 +329,7 @@ static void __call_console_drivers(unsig if ((con->flags & CON_ENABLED) && con->write && (cpu_online(smp_processor_id()) || (con->flags & CON_ANYTIME))) - con->write(con, &LOG_BUF(start), end - start); + con->write(con, &LOG_BUF(start), end - start, loglevel); } } @@ -355,10 +356,11 @@ static void _call_console_drivers(unsign if ((start & LOG_BUF_MASK) > (end & LOG_BUF_MASK)) { /* wrapped write */ __call_console_drivers(start & LOG_BUF_MASK, - log_buf_len); - __call_console_drivers(0, end & LOG_BUF_MASK); + log_buf_len, msg_log_level); + __call_console_drivers(0, end & LOG_BUF_MASK, + msg_log_level); } else { - __call_console_drivers(start, end); + __call_console_drivers(start, end, msg_log_level); } } } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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