mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 1/6] kfifo: introduce kfifo_dump_str to dump the fifo
Date: Wed,  6 Mar 2013 01:22:39 +0100	[thread overview]
Message-ID: <1362529364-20651-1-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <20130306002138.GQ23022@game.jcrosoft.org>

This will allow to implement a dmesg mecanism in barebox

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 include/kfifo.h |    2 ++
 lib/kfifo.c     |   21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/include/kfifo.h b/include/kfifo.h
index 25880f4..9dbbe0d 100644
--- a/include/kfifo.h
+++ b/include/kfifo.h
@@ -74,5 +74,7 @@ static inline unsigned int kfifo_len(struct kfifo *fifo)
 void kfifo_putc(struct kfifo *fifo, unsigned char c);
 unsigned int kfifo_getc(struct kfifo *fifo, unsigned char *c);
 
+void kfifo_dump_str(struct kfifo *fifo, void (*dump)(unsigned char c));
+
 #endif
 
diff --git a/lib/kfifo.c b/lib/kfifo.c
index afd3894..7892aed 100644
--- a/lib/kfifo.c
+++ b/lib/kfifo.c
@@ -154,3 +154,24 @@ unsigned int kfifo_getc(struct kfifo *fifo, unsigned char *c)
 	return 0;
 }
 
+void kfifo_dump_str(struct kfifo *fifo, void (*dump)(unsigned char c))
+{
+	int i;
+	unsigned char *c;
+	unsigned int l;
+	unsigned int len;
+
+	len = fifo->in - fifo->out;
+
+	/* first get the data from fifo->out until the end of the buffer */
+	l = min(len, fifo->size - (fifo->out & (fifo->size - 1)));
+	c = fifo->buffer + (fifo->out & (fifo->size - 1));
+	for (i = 0; i < l; i++)
+		dump(c[i]);
+
+	/* then get the rest (if any) from the beginning of the buffer */
+	c = fifo->buffer;
+	l = len - l;
+	for (i = 0; i < l; i++)
+		dump(c[i]);
+}
-- 
1.7.10.4


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  reply	other threads:[~2013-03-06  0:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-06  0:21 [PATCH 0/6 v2] introduction of dmesg support Jean-Christophe PLAGNIOL-VILLARD
2013-03-06  0:22 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-03-06  0:22   ` [PATCH 2/6] console: switch to kfifo_dump_str Jean-Christophe PLAGNIOL-VILLARD
2013-03-06  0:22   ` [PATCH 3/6] intoduce dmesg to print the barebox printk to dmesg ring buffer Jean-Christophe PLAGNIOL-VILLARD
2013-03-06  0:22   ` [PATCH 4/6] startup: switch to pr_xxx Jean-Christophe PLAGNIOL-VILLARD
2013-03-06  0:22   ` [PATCH 5/6] at91: clock switch to pr_info Jean-Christophe PLAGNIOL-VILLARD
2013-03-06  0:22   ` [PATCH 6/6] meminfo: switch to pr_xxx Jean-Christophe PLAGNIOL-VILLARD

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1362529364-20651-1-git-send-email-plagnioj@jcrosoft.com \
    --to=plagnioj@jcrosoft.com \
    --cc=barebox@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox