Resent-Date: Tue, 3 Nov 1998 05:49:56 +0100 (MET) Date: Mon, 2 Nov 1998 22:50:24 -0600 From: Chris Lawrence To: Linux/m68k Mailing List Subject: Serial stats for 2.1.x Mail-Followup-To: Linux/m68k Mailing List Organization: Kathie Lee's Sweatshops X-Operating-System: Linux/m68k 2.1.124 Resent-From: linux-m68k@phil.uni-sb.de The following patch enables logging of serial errors in 2.1; these stats can be read from /proc/tty/driver/serial Perhaps this should be optional, since serial performance is a bottleneck on m68k anyway... but I needed the stats to track down some problems I'm having with the MultiFaceCard III (which are apparently either hardware or driver bugs; the overrun flags detected by PPP are being generated by the serial driver). --- linux-2.1.124/include/asm-m68k/serial.h.old Mon Nov 2 02:22:07 1998 +++ linux-2.1.124/include/asm-m68k/serial.h Mon Nov 2 03:24:33 1998 @@ -336,9 +336,21 @@ if (tty->flip.count >= TTY_FLIPBUF_SIZE) return; tty->flip.count++; - if (err == TTY_BREAK) { + switch(err) { + case TTY_BREAK: + info->icount.brk++; if (info->flags & ASYNC_SAK) do_SAK(tty); + break; + case TTY_PARITY: + info->icount.parity++; + break; + case TTY_OVERRUN: + info->icount.overrun++; + break; + case TTY_FRAME: + info->icount.frame++; + break; } *tty->flip.flag_buf_ptr++ = err; *tty->flip.char_buf_ptr++ = ch; Chris -- ============================================================================= | Chris Lawrence | My home page: | | | http://www.clark.net/pub/lawrencc/ | | | | | Amiga A4000/040 and | Are you tired of politics as usual? | | Linux/m68k 2.0.33pl1 | http://www.lp.org/ | =============================================================================