Revert "Move xen patchset to new version's subdir."

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / ppc64-xmon-dmesg-printing.patch

diff --git a/src/patches/suse-2.6.27.31/patches.arch/ppc64-xmon-dmesg-printing.patch b/src/patches/suse-2.6.27.31/patches.arch/ppc64-xmon-dmesg-printing.patch
deleted file mode 100644 (file)
index 5217414..0000000
--- a/src/patches/suse-2.6.27.31/patches.arch/ppc64-xmon-dmesg-printing.patch
+++ /dev/null
@@ -1,130 +0,0 @@
-Subject: [PATCH] add syslog printing to xmon debugger.
-From: Linas Vepstas <linas@austin.ibm.com>
-
-
-This patch 'dmesg'/printk log buffer printing to xmon.  I find this
-useful because crashes are almost always preceeded by interesting
-printk's.   This patch is simple & straightforward, except for one
-possibly controversial aspect: it embeds a small snippet in
-kernel/printk.c to return the location of the syslog.  This is
-needed because kallsyms and even CONFIG_KALLSYMS_ALL is not enough
-to reveal the location of log_buf.   This code is about 90%
-cut-n-paste of earlier code from Keith Owens.
-
-Signed-off-by: Olaf Hering <olh@suse.de>
-
- arch/powerpc/xmon/xmon.c |   57 +++++++++++++++++++++++++++++++++++++++++++++++
- kernel/printk.c          |   15 ++++++++++++
- 2 files changed, 72 insertions(+)
-
---- a/arch/powerpc/xmon/xmon.c
-+++ b/arch/powerpc/xmon/xmon.c
-@@ -136,6 +136,7 @@ static struct bpt *in_breakpoint_table(u
- static int  do_step(struct pt_regs *);
- static void bpt_cmds(void);
- static void cacheflush(void);
-+static void xmon_show_dmesg(void);
- static int  cpu_cmd(void);
- static void csum(void);
- static void bootcmds(void);
-@@ -194,6 +195,7 @@ Commands:\n\
- #endif
-   "\
-   C   checksum\n\
-+  D   show dmesg (printk) buffer\n\
-   d   dump bytes\n\
-   di  dump instructions\n\
-   df  dump float values\n\
-@@ -808,6 +810,9 @@ cmds(struct pt_regs *excp)
-               case 'd':
-                       dump();
-                       break;
-+              case 'D':
-+                      xmon_show_dmesg();
-+                      break;
-               case 'l':
-                       symbol_lookup();
-                       break;
-@@ -2522,6 +2527,58 @@ static void xmon_print_symbol(unsigned l
-       printf("%s", after);
- }
- 
-+extern void debugger_syslog_data(char *syslog_data[4]);
-+#define SYSLOG_WRAP(p) if (p < syslog_data[0]) p = syslog_data[1]-1; \
-+      else if (p >= syslog_data[1]) p = syslog_data[0];
-+
-+static void xmon_show_dmesg(void)
-+{
-+      char *syslog_data[4], *start, *end, c;
-+      int logsize;
-+
-+      /* syslog_data[0,1] physical start, end+1.
-+       * syslog_data[2,3] logical start, end+1.
-+       */
-+      debugger_syslog_data(syslog_data);
-+      if (syslog_data[2] == syslog_data[3])
-+              return;
-+      logsize = syslog_data[1] - syslog_data[0];
-+      start = syslog_data[0] + (syslog_data[2] - syslog_data[0]) % logsize;
-+      end = syslog_data[0] + (syslog_data[3] - syslog_data[0]) % logsize;
-+
-+      /* Do a line at a time (max 200 chars) to reduce overhead */
-+      c = '\0';
-+      while(1) {
-+              char *p;
-+              int chars = 0;
-+              if (!*start) {
-+                      while (!*start) {
-+                              ++start;
-+                              SYSLOG_WRAP(start);
-+                              if (start == end)
-+                                      break;
-+                      }
-+                      if (start == end)
-+                              break;
-+              }
-+              p = start;
-+              while (*start && chars < 200) {
-+                      c = *start;
-+                      ++chars;
-+                      ++start;
-+                      SYSLOG_WRAP(start);
-+                      if (start == end || c == '\n')
-+                              break;
-+              }
-+              if (chars)
-+                      printf("%.*s", chars, p);
-+              if (start == end)
-+                      break;
-+      }
-+      if (c != '\n')
-+              printf("\n");
-+}
-+
- #ifdef CONFIG_PPC64
- static void dump_slb(void)
- {
---- a/kernel/printk.c
-+++ b/kernel/printk.c
-@@ -426,6 +426,21 @@ asmlinkage long sys_syslog(int type, cha
-       return do_syslog(type, buf, len);
- }
- 
-+#ifdef CONFIG_DEBUG_KERNEL
-+/* Its very handy to be able to view the syslog buffer during debug.
-+ * But do_syslog() uses locks so it cannot be used during debugging.
-+ * Instead, provide the start and end of the physical and logical logs.
-+ * This is equivalent to do_syslog(3).
-+ */
-+void debugger_syslog_data(char *syslog_data[4])
-+{
-+      syslog_data[0] = log_buf;
-+      syslog_data[1] = log_buf + log_buf_len;
-+      syslog_data[2] = log_buf + log_end - (logged_chars < log_buf_len ? logged_chars : log_buf_len);
-+      syslog_data[3] = log_buf + log_end;
-+}
-+#endif   /* CONFIG_DEBUG_KERNEL */
-+
- /*
-  * Call the console drivers on a range of log_buf
-  */