[PATCH v4 9/9] Update Documentation

[Aravinda Prasad]

This patch updates usage message and man page.

Signed-off-by: Aravinda Prasad <aravinda at linux.vnet.ibm.com>
---
 makedumpfile.8 |   18 +++++++++++++++++-
 print_info.c   |   13 ++++++++++---
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/makedumpfile.8 b/makedumpfile.8
index f955259..e9a7ce2 100644
--- a/makedumpfile.8
+++ b/makedumpfile.8
@@ -6,7 +6,7 @@ makedumpfile \- make a small dumpfile of kdump
 .br
 \fBmakedumpfile\fR \-F [\fIOPTION\fR] [\-x \fIVMLINUX\fR|\-i \fIVMCOREINFO\fR] \fIVMCORE\fR
 .br
-\fBmakedumpfile\fR   [\fIOPTION\fR] \-x \fIVMLINUX\fR \-\-config \fIFILTERCONFIGFILE\fR \fIVMCORE\fR \fIDUMPFILE\fR
+\fBmakedumpfile\fR   [\fIOPTION\fR] \-x \fIVMLINUX\fR [\-\-config \fIFILTERCONFIGFILE\fR] [\-\-eppic \fIEPPICMACRO\fR] \fIVMCORE\fR \fIDUMPFILE\fR
 .br
 \fBmakedumpfile\fR \-R \fIDUMPFILE\fR
 .br
@@ -70,6 +70,15 @@ filter commands. The memory locations that require to be filtered out are
 then poisoned with character 'X' (58 in Hex). Refer to
 \fBmakedumpfile.conf(5)\fR for file format.
 .PP
+Eppic macros can also be used to specify kernel symbols and its members that
+need to be filtered. Eppic provides C semantics including language constructs
+such as conditional statements, logical and arithmetic operators, functions,
+nested loops to traverse and erase kernel data. --eppic requires
+\fBeppic_makedumpfile.so\fR and eppic library. \fBeppic_makedumpfile.so\fR
+can be built from makedumpfile source. Refer to
+\fBhttp://code.google.com/p/eppic/\fR to build eppic library \fBlibeppic.a\fR
+and for more information on writing eppic macros.
+.PP
 To analyze the first kernel's memory usage, makedumpfile can refer to
 \fIVMCOREINFO\fR instead of \fIVMLINUX\fR. \fIVMCOREINFO\fR contains the first
 kernel's information (structure size, field offset, etc.), and \fIVMCOREINFO\fR
@@ -265,6 +274,13 @@ desired kernel data from vmcore while creating \fIDUMPFILE\fR. For filter
 command syntax please refer to \fBmakedumpfile.conf(5)\fR.
 
 .TP
+\fB\-\-eppic\fR \fIEPPICMACRO\fR
+Used in conjunction with \-x \fIVMLINUX\fR option, to specify the eppic macro
+file that contains filter rules or directory that contains eppic macro
+files to filter out desired kernel data from vmcore while creating \fIDUMPFILE\fR.
+When directory is specified, all the eppic macros in the directory are processed.
+
+.TP
 \fB\-F\fR
 Output the dump data in the flattened format to the standard output for
 transporting the dump data by SSH.
diff --git a/print_info.c b/print_info.c
index 2fc19f7..acc17f2 100644
--- a/print_info.c
+++ b/print_info.c
@@ -52,9 +52,9 @@ print_usage(void)
 	MSG("    DUMPFILE\n");
 	MSG("\n");
 	MSG("  Creating DUMPFILE with filtered kernel data specified through filter config\n");
-	MSG("  file:\n");
-	MSG("  # makedumpfile    [-c|-l|-E] [-d DL] -x VMLINUX --config FILTERCONFIGFILE\n");
-	MSG("    VMCORE DUMPFILE\n");
+	MSG("  file or eppic macro:\n");
+	MSG("  # makedumpfile    [-c|-l|-E] [-d DL] -x VMLINUX [--config FILTERCONFIGFILE]\n");
+	MSG("    [--eppic EPPICMACRO] VMCORE DUMPFILE\n");
 	MSG("\n");
 	MSG("  Outputting the dump data in the flattened format to the standard output:\n");
 	MSG("  # makedumpfile -F [-c|-l|-E] [-d DL] [-x VMLINUX|-i VMCOREINFO] VMCORE\n");
@@ -145,6 +145,13 @@ print_usage(void)
 	MSG("      file that contains filter commands to filter out desired kernel data\n");
 	MSG("      from vmcore while creating DUMPFILE.\n");
 	MSG("\n");
+	MSG("  [--eppic EPPICMACRO]:\n");
+	MSG("      Used in conjunction with -x VMLINUX option, to specify the eppic macro\n");
+	MSG("      file that contains filter rules or directory that contains eppic macro\n");
+	MSG("      files to filter out desired kernel data from vmcore while creating DUMPFILE.\n");
+	MSG("      When directory is specified, all the eppic macros in the directory are\n");
+	MSG("      processed\n");
+	MSG("\n");
 	MSG("  [-F]:\n");
 	MSG("      Output the dump data in the flattened format to the standard output\n");
 	MSG("      for transporting the dump data by SSH.\n");