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
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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) {