Thread (4 messages) flat view 4 messages, 3 authors, 2014-08-12

Re: [PATCH v3 1/2] printk: Add function to return log buffer address and size

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2014-08-11 01:13:51
Also in: lkml

On Sat, 2014-08-09 at 11:15 +0530, Vasant Hegde wrote:
Ben,
  - This patchset applies cleanly on powerpc next branch.
  - Andrew Morton suggested to include this patch in powerpc tree.
    (https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-August/119802.html)
Ok, Andrew, can I have an Ack ?

Cheers,
Ben.
quoted hunk ↗ jump to hunk
 include/linux/printk.h |    3 +++
 kernel/printk/printk.c |   12 ++++++++++++
 2 files changed, 15 insertions(+)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 319ff7e..b8c0316 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -10,6 +10,9 @@
 extern const char linux_banner[];
 extern const char linux_proc_banner[];
 
+extern char *log_buf_addr_get(void);
+extern u32 log_buf_len_get(void);
+
 static inline int printk_get_level(const char *buffer)
 {
 	if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index ea2d5f6..d6a984c 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -270,6 +270,18 @@ static char __log_buf[__LOG_BUF_LEN] __aligned(LOG_ALIGN);
 static char *log_buf = __log_buf;
 static u32 log_buf_len = __LOG_BUF_LEN;
 
+/* Return log buffer address */
+char *log_buf_addr_get(void)
+{
+	return log_buf;
+}
+
+/* Return log buffer size */
+u32 log_buf_len_get(void)
+{
+	return log_buf_len;
+}
+
 /* human readable text of the record */
 static char *log_text(const struct printk_log *msg)
 {
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