On 05/08/2012 04:37 PM, Kay Sievers wrote: > On Tue, 2012-05-08 at 16:27 -0700, Randy Dunlap wrote: >> On 05/08/2012 04:13 PM, Kay Sievers wrote: >> >>> On Tue, 2012-05-08 at 09:24 -0700, Randy Dunlap wrote: >>>> On 05/08/2012 01:15 AM, Stephen Rothwell wrote: >>> >>>> Build errors on i386 and x86_64 when CONFIG_PRINTK is not enabled: >>> >>> This seems to work for me. >> >> It still has one build error which was in the initial report: > > Ah sorry, missed to add a hunk. Still not fixed. drivers/char/mem.c:858:2: error: implicit declaration of function 'printk_emit' printk_emit(facility, level, NULL, 0, "%s", line); > Thanks, > Kay > > > From: Kay Sievers <kay@xxxxxxxx> > Subject: printk - fix compilation for CONFIG_PRINTK=n > > Signed-off-by: Kay Sievers <kay@xxxxxxxx> > --- > drivers/char/mem.c | 2 ++ > kernel/printk.c | 41 ++++++++++++++++++++++------------------- > 2 files changed, 24 insertions(+), 19 deletions(-) > > --- a/drivers/char/mem.c > +++ b/drivers/char/mem.c > @@ -825,7 +825,9 @@ static const struct memdev { > [7] = { "full", 0666, &full_fops, NULL }, > [8] = { "random", 0666, &random_fops, NULL }, > [9] = { "urandom", 0666, &urandom_fops, NULL }, > +#ifdef CONFIG_PRINTK > [11] = { "kmsg", 0644, &kmsg_fops, NULL }, > +#endif > #ifdef CONFIG_CRASH_DUMP > [12] = { "oldmem", 0, &oldmem_fops, NULL }, > #endif > --- a/kernel/printk.c > +++ b/kernel/printk.c > @@ -126,7 +126,6 @@ EXPORT_SYMBOL(console_set_on_cmdline); > /* Flag: console code may call schedule() */ > static int console_may_schedule; > > -#ifdef CONFIG_PRINTK > /* > * The printk log buffer consists of a chain of concatenated variable > * length records. Every record starts with a record header, containing > @@ -208,16 +207,9 @@ struct log { > */ > static DEFINE_RAW_SPINLOCK(logbuf_lock); > > -/* cpu currently holding logbuf_lock */ > -static volatile unsigned int logbuf_cpu = UINT_MAX; > - > -#define LOG_LINE_MAX 1024 > - > -/* record buffer */ > -#define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT) > -static char __log_buf[__LOG_BUF_LEN]; > -static char *log_buf = __log_buf; > -static u32 log_buf_len = __LOG_BUF_LEN; > +/* the next printk record to read by syslog(READ) or /proc/kmsg */ > +static u64 syslog_seq; > +static u32 syslog_idx; > > /* index and sequence number of the first record stored in the buffer */ > static u64 log_first_seq; > @@ -225,15 +217,23 @@ static u32 log_first_idx; > > /* index and sequence number of the next record to store in the buffer */ > static u64 log_next_seq; > +#ifdef CONFIG_PRINTK > static u32 log_next_idx; > > /* the next printk record to read after the last 'clear' command */ > static u64 clear_seq; > static u32 clear_idx; > > -/* the next printk record to read by syslog(READ) or /proc/kmsg */ > -static u64 syslog_seq; > -static u32 syslog_idx; > +#define LOG_LINE_MAX 1024 > + > +/* record buffer */ > +#define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT) > +static char __log_buf[__LOG_BUF_LEN]; > +static char *log_buf = __log_buf; > +static u32 log_buf_len = __LOG_BUF_LEN; > + > +/* cpu currently holding logbuf_lock */ > +static volatile unsigned int logbuf_cpu = UINT_MAX; > > /* human readable text of the record */ > static char *log_text(const struct log *msg) > @@ -1425,13 +1425,16 @@ asmlinkage int printk(const char *fmt, . > return r; > } > EXPORT_SYMBOL(printk); > + > #else > > -static void call_console_drivers(int level, const char *text, size_t len) > -{ > -} > +#define LOG_LINE_MAX 0 > +static struct log *log_from_idx(u32 idx) { return NULL; } > +static u32 log_next(u32 idx) { return 0; } > +static char *log_text(const struct log *msg) { return NULL; } > +static void call_console_drivers(int level, const char *text, size_t len) {} > > -#endif > +#endif /* CONFIG_PRINTK */ > > static int __add_preferred_console(char *name, int idx, char *options, > char *brl_options) > @@ -1715,7 +1718,7 @@ static u32 console_idx; > * by printk(). If this is the case, console_unlock(); emits > * the output prior to releasing the lock. > * > - * If there is output waiting, we wake it /dev/kmsg and syslog() users. > + * If there is output waiting, we wake /dev/kmsg and syslog() users. > * > * console_unlock(); may be called from any context. > */ > > -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html