The patch titled
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix
has been added to the -mm tree. Its filename is
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix.patch
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------------------------------------------------------
Subject: kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix
From: Neil Horman <nhorman@xxxxxxxxxxxxx>
Add some comments and extra symbols on top of whats there for
kernel/printk.c to satisfy Erics requests, and support Ken'ichi's
enhanced version of the makedumpfile patch
Signed-off-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Cc: "Ken'ichi Ohmichi" <oomichi@xxxxxxxxxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/printk.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff -puN kernel/printk.c~kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix kernel/printk.c
--- a/kernel/printk.c~kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix
+++ a/kernel/printk.c
@@ -137,10 +137,21 @@ static int log_buf_len = __LOG_BUF_LEN;
static unsigned logged_chars; /* Number of chars produced since last read+clear operation */
#ifdef CONFIG_KEXEC
+/*
+ * This appends the listed symbols to /proc/vmcoreinfo
+ * /proc/vmcoreinfo is used by various utiilties, like
+ * crash and makedumpfile to obtain access to symbols that
+ * are otherwise very difficult to locate. These symbols
+ * are specifically used so that utilities
+ * can access and extract the dmesg log from a vmcore file
+ * after a crash
+ */
void log_buf_kexec_setup(void)
{
VMCOREINFO_SYMBOL(log_buf);
VMCOREINFO_SYMBOL(log_end);
+ VMCOREINFO_SYMBOL(log_buf_len);
+ VMCOREINFO_SYMBOL(logged_chars)
}
#endif
_
Patches currently in -mm which might be from nhorman@xxxxxxxxxxxxx are
linux-next.patch
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists.patch
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix.patch
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix.patch
kexec-add-dmesg-log-symbols-to-proc-vmcoreinfo-lists-fix-fix-fix.patch
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