From: Geert Uytterhoeven <geert@linux-m68k.org> To: John Ogness <john.ogness@linutronix.de> Cc: Petr Mladek <pmladek@suse.com>, Sergey Senozhatsky <senozhatsky@chromium.org>, Steven Rostedt <rostedt@goodmis.org>, Thomas Gleixner <tglx@linutronix.de>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-riscv <linux-riscv@lists.infradead.org> Subject: Re: [PATCH printk v5 1/1] printk: extend console_lock for per-console locking Date: Thu, 23 Jun 2022 12:10:00 +0200 [thread overview] Message-ID: <CAMuHMdV7trsRg0x9w8ZfHp0UHZ8PE+EoddAzf9nmtjGrO4YfPw@mail.gmail.com> (raw) In-Reply-To: <87v8ssgw9w.fsf@jogness.linutronix.de> Hi John, On Thu, Jun 23, 2022 at 12:37 AM John Ogness <john.ogness@linutronix.de> wrote: > On 2022-06-22, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > > I have bisected another intriguing issue to this commit: on SiPEED > > MAiX BiT (Canaan K210 riscv), it no longer prints the line detecting > > ttySIF0, i.e. the console output changes like: > > > > spi-nor spi1.0: gd25lq128d (16384 Kbytes) > > i2c_dev: i2c /dev entries driver > > k210-fpioa 502b0000.pinmux: K210 FPIOA pin controller > > -38000000.serial: ttySIF0 at MMIO 0x38000000 (irq = 1, base_baud = > > 115200) is a SiFive UART v0 > > printk: console [ttySIF0] enabled > > printk: bootconsole [sifive0] disabled > > printk: console [ttySIF0] printing thread started > > > > As this patch does not make any changes to drivers/tty/, and ttySIF0 > > does work (it's the console), I looked in /proc/kmsg, and bingo, > > the missing line is there, so it is generated, but never printed. > > What is sifive0? Are you using the earlycon driver to create an early > boot console? Can I see your boot args? earlycon: sifive0 at MMIO 0x0000000038000000 (options '115200n8') printk: bootconsole [sifive0] enabled Kernel command line: earlycon console=ttySIF0 rootdelay=2 root=/dev/mmcblk0p1 ro > There is a known issue the that earlycon does not synchronize with > normal consoles. A patch was recently posted [0] on LKML. > [0] https://lore.kernel.org/lkml/20220621090900.GB7891@pathway.suse.cz Thank you, that did the trick! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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From: Geert Uytterhoeven <geert@linux-m68k.org> To: John Ogness <john.ogness@linutronix.de> Cc: Petr Mladek <pmladek@suse.com>, Sergey Senozhatsky <senozhatsky@chromium.org>, Steven Rostedt <rostedt@goodmis.org>, Thomas Gleixner <tglx@linutronix.de>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-riscv <linux-riscv@lists.infradead.org> Subject: Re: [PATCH printk v5 1/1] printk: extend console_lock for per-console locking Date: Thu, 23 Jun 2022 12:10:00 +0200 [thread overview] Message-ID: <CAMuHMdV7trsRg0x9w8ZfHp0UHZ8PE+EoddAzf9nmtjGrO4YfPw@mail.gmail.com> (raw) In-Reply-To: <87v8ssgw9w.fsf@jogness.linutronix.de> Hi John, On Thu, Jun 23, 2022 at 12:37 AM John Ogness <john.ogness@linutronix.de> wrote: > On 2022-06-22, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > > I have bisected another intriguing issue to this commit: on SiPEED > > MAiX BiT (Canaan K210 riscv), it no longer prints the line detecting > > ttySIF0, i.e. the console output changes like: > > > > spi-nor spi1.0: gd25lq128d (16384 Kbytes) > > i2c_dev: i2c /dev entries driver > > k210-fpioa 502b0000.pinmux: K210 FPIOA pin controller > > -38000000.serial: ttySIF0 at MMIO 0x38000000 (irq = 1, base_baud = > > 115200) is a SiFive UART v0 > > printk: console [ttySIF0] enabled > > printk: bootconsole [sifive0] disabled > > printk: console [ttySIF0] printing thread started > > > > As this patch does not make any changes to drivers/tty/, and ttySIF0 > > does work (it's the console), I looked in /proc/kmsg, and bingo, > > the missing line is there, so it is generated, but never printed. > > What is sifive0? Are you using the earlycon driver to create an early > boot console? Can I see your boot args? earlycon: sifive0 at MMIO 0x0000000038000000 (options '115200n8') printk: bootconsole [sifive0] enabled Kernel command line: earlycon console=ttySIF0 rootdelay=2 root=/dev/mmcblk0p1 ro > There is a known issue the that earlycon does not synchronize with > normal consoles. A patch was recently posted [0] on LKML. > [0] https://lore.kernel.org/lkml/20220621090900.GB7891@pathway.suse.cz Thank you, that did the trick! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2022-06-23 10:10 UTC|newest] Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-21 21:22 [PATCH printk v4 00/15] implement threaded console printing John Ogness 2022-04-21 21:22 ` [PATCH printk v4 01/15] printk: rename cpulock functions John Ogness 2022-04-21 21:22 ` [PATCH printk v4 02/15] printk: cpu sync always disable interrupts John Ogness 2022-04-21 21:22 ` [PATCH printk v4 03/15] printk: add missing memory barrier to wake_up_klogd() John Ogness 2022-04-21 21:22 ` [PATCH printk v4 04/15] printk: wake up all waiters John Ogness 2022-04-21 21:22 ` [PATCH printk v4 05/15] printk: wake waiters for safe and NMI contexts John Ogness 2022-04-21 21:22 ` [PATCH printk v4 06/15] printk: get caller_id/timestamp after migration disable John Ogness 2022-04-21 21:22 ` [PATCH printk v4 07/15] printk: call boot_delay_msec() in printk_delay() John Ogness 2022-04-21 21:22 ` [PATCH printk v4 08/15] printk: add con_printk() macro for console details John Ogness 2022-04-21 21:22 ` [PATCH printk v4 09/15] printk: refactor and rework printing logic John Ogness 2022-04-21 21:22 ` [PATCH printk v4 10/15] printk: move buffer definitions into console_emit_next_record() caller John Ogness 2022-04-21 21:22 ` [PATCH printk v4 11/15] printk: add pr_flush() John Ogness 2022-04-21 21:22 ` [PATCH printk v4 12/15] printk: add functions to prefer direct printing John Ogness 2022-04-21 21:22 ` [PATCH printk v4 13/15] printk: add kthread console printers John Ogness 2022-04-22 7:48 ` Petr Mladek 2022-04-21 21:22 ` [PATCH printk v4 14/15] printk: extend console_lock for proper kthread support John Ogness 2022-04-21 21:40 ` John Ogness 2022-04-22 9:21 ` Petr Mladek 2022-04-25 20:58 ` [PATCH printk v5 1/1] printk: extend console_lock for per-console locking John Ogness 2022-04-26 12:07 ` Petr Mladek 2022-04-26 13:16 ` Petr Mladek [not found] ` <CGME20220427070833eucas1p27a32ce7c41c0da26f05bd52155f0031c@eucas1p2.samsung.com> 2022-04-27 7:08 ` Marek Szyprowski 2022-04-27 7:08 ` Marek Szyprowski 2022-04-27 7:38 ` Petr Mladek 2022-04-27 7:38 ` Petr Mladek 2022-04-27 11:44 ` Marek Szyprowski 2022-04-27 11:44 ` Marek Szyprowski 2022-04-27 16:15 ` John Ogness 2022-04-27 16:15 ` John Ogness 2022-04-27 16:48 ` Petr Mladek 2022-04-27 16:48 ` Petr Mladek 2022-04-28 14:54 ` Petr Mladek 2022-04-28 14:54 ` Petr Mladek 2022-04-29 13:53 ` Marek Szyprowski 2022-04-29 13:53 ` Marek Szyprowski 2022-04-30 16:00 ` John Ogness 2022-04-30 16:00 ` John Ogness 2022-05-02 9:19 ` Marek Szyprowski 2022-05-02 9:19 ` Marek Szyprowski 2022-05-02 13:11 ` John Ogness 2022-05-02 13:11 ` John Ogness 2022-05-02 22:29 ` Marek Szyprowski 2022-05-02 22:29 ` Marek Szyprowski 2022-05-04 5:56 ` John Ogness 2022-05-04 5:56 ` John Ogness 2022-05-04 6:52 ` Marek Szyprowski 2022-05-04 6:52 ` Marek Szyprowski 2022-06-08 15:10 ` Geert Uytterhoeven 2022-06-08 15:10 ` Geert Uytterhoeven 2022-06-09 11:19 ` John Ogness 2022-06-09 11:19 ` John Ogness 2022-06-09 11:58 ` Jason A. Donenfeld 2022-06-09 11:58 ` Jason A. Donenfeld 2022-06-09 12:18 ` Dmitry Vyukov 2022-06-09 12:18 ` Dmitry Vyukov 2022-06-09 12:27 ` Jason A. Donenfeld 2022-06-09 12:27 ` Jason A. Donenfeld 2022-06-09 12:32 ` Dmitry Vyukov 2022-06-09 12:32 ` Dmitry Vyukov 2022-06-17 16:51 ` Sebastian Andrzej Siewior 2022-06-17 16:51 ` Sebastian Andrzej Siewior 2022-06-09 12:18 ` Jason A. Donenfeld 2022-06-09 12:18 ` Jason A. Donenfeld 2022-05-02 13:17 ` Petr Mladek 2022-05-02 13:17 ` Petr Mladek 2022-05-02 23:13 ` Marek Szyprowski 2022-05-02 23:13 ` Marek Szyprowski 2022-05-03 6:49 ` Petr Mladek 2022-05-03 6:49 ` Petr Mladek 2022-05-04 6:05 ` Marek Szyprowski 2022-05-04 6:05 ` Marek Szyprowski 2022-05-04 21:11 ` John Ogness 2022-05-04 21:11 ` John Ogness 2022-05-04 22:42 ` John Ogness 2022-05-04 22:42 ` John Ogness 2022-05-05 22:33 ` John Ogness 2022-05-05 22:33 ` John Ogness 2022-05-06 6:43 ` Marek Szyprowski 2022-05-06 6:43 ` Marek Szyprowski 2022-05-06 7:55 ` Neil Armstrong 2022-05-06 7:55 ` Neil Armstrong 2022-05-08 11:02 ` John Ogness 2022-05-08 11:02 ` John Ogness 2022-05-06 8:16 ` Petr Mladek 2022-05-06 8:16 ` Petr Mladek 2022-05-06 9:20 ` John Ogness 2022-05-06 9:20 ` John Ogness [not found] ` <CGME20220506112526eucas1p2a3688f87d3ed8331b99f2f876bf6c2f6@eucas1p2.samsung.com> 2022-05-06 11:25 ` Marek Szyprowski 2022-05-06 12:41 ` John Ogness 2022-05-06 13:04 ` Marek Szyprowski 2022-06-22 9:03 ` Geert Uytterhoeven 2022-06-22 9:03 ` Geert Uytterhoeven 2022-06-22 22:37 ` John Ogness 2022-06-22 22:37 ` John Ogness 2022-06-23 10:10 ` Geert Uytterhoeven [this message] 2022-06-23 10:10 ` Geert Uytterhoeven 2022-04-21 21:22 ` [PATCH printk v4 15/15] printk: remove @console_locked John Ogness 2022-04-22 9:39 ` [PATCH printk v4 00/15] implement threaded console printing Petr Mladek 2022-04-22 20:29 ` Petr Mladek
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