[PATCH] Use progress bar also for bitmap creation

[bwalle@xxxxxxx (Bernhard Walle)]

On large nodes, bitmap creation takes a serious amount of time. But the
progress indicator only starts after the bitmaps has been created, showing
only the progress of the copy process.

This patch adds a "message" parameter to the print_progress() function.
That message is displayed first and gets overwritten by next message.
So, the user sees

    Excluding zero pages : [  0 %]
    Excluding zero pages : [... %]
    Excluding zero pages : [100 %]
    Copying data         : [  0 %]
    Copying data         : [... %]
    Copying data         : [100 %]

in sequence. IMO that's the fastest option to implement such a progress.


Signed-off-by: Bernhard Walle <bwalle at suse.de>

---
 makedumpfile.c |   30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -32,6 +32,17 @@ int message_level;
 /*
  * Forward declarations
  */
+void print_progress(const char 		*msg,
+		    unsigned long 	current,
+		    unsigned long 	end);
+
+/*
+ * Message texts
+ */
+#define PROGRESS_COPY   	"Copying data"
+#define PROGRESS_UNN_PAGES 	"Excluding unnecessary pages"
+#define PROGRESS_ZERO_PAGES 	"Excluding zero pages"
+#define PROGRESS_MAXLEN		"35"
 
 /*
  * The numbers of the excluded pages
@@ -4062,6 +4073,9 @@ exclude_zero_pages()
 	}
 	for (pfn = paddr = 0; pfn < info->max_mapnr;
 	    pfn++, paddr += info->page_size) {
+
+		print_progress(PROGRESS_ZERO_PAGES, pfn, info->max_mapnr);
+
 		if (!is_in_segs(paddr))
 			continue;
 
@@ -4100,6 +4114,8 @@ exclude_unnecessary_pages()
 		goto out;
 	}
 	for (mm = 0; mm < info->num_mem_map; mm++) {
+		print_progress(PROGRESS_UNN_PAGES, mm, info->num_mem_map);
+
 		mmd = &info->mem_map_data[mm];
 		pfn   = mmd->pfn_start;
 		paddr = pfn*info->page_size;
@@ -4670,7 +4686,7 @@ write_kdump_header()
 }
 
 void
-print_progress(unsigned long current, unsigned long end)
+print_progress(const char *msg, unsigned long current, unsigned long end)
 {
 	int progress;
 	time_t tm;
@@ -4686,7 +4702,7 @@ print_progress(unsigned long current, un
 		progress = 100;
 
 	PROGRESS_MSG("\r");
-	PROGRESS_MSG("[%3d %%]", progress);
+	PROGRESS_MSG("%-" PROGRESS_MAXLEN "s: [%3d %%] ", msg, progress);
 }
 
 int
@@ -4912,7 +4928,7 @@ write_elf_pages()
 
 			while (bufsz_remain > 0) {
 				if ((num_dumped % per) == 0)
-					print_progress(num_dumped, num_dumpable);
+					print_progress(PROGRESS_COPY, num_dumped, num_dumpable);
 
 				if (bufsz_remain >= page_size)
 					bufsz_write = page_size;
@@ -5009,7 +5025,7 @@ write_elf_pages()
 
 		while (bufsz_remain > 0) {
 			if ((num_dumped % per) == 0)
-				print_progress(num_dumped, num_dumpable);
+				print_progress(PROGRESS_COPY, num_dumped, num_dumpable);
 
 			if (bufsz_remain >= page_size)
 				bufsz_write = page_size;
@@ -5038,7 +5054,7 @@ write_elf_pages()
 	if (!write_cache_bufsz(&cd_seg))
 		goto out;
 
-	print_progress(num_dumpable, num_dumpable);
+	print_progress(PROGRESS_COPY, num_dumpable, num_dumpable);
 	PROGRESS_MSG("\n");
 
 	ret = TRUE;
@@ -5247,7 +5263,7 @@ write_kdump_pages()
 	for (pfn = 0; pfn < info->max_mapnr; pfn++) {
 
 		if ((num_dumped % per) == 0)
-			print_progress(num_dumped, num_dumpable);
+			print_progress(PROGRESS_COPY, num_dumped, num_dumpable);
 
 		if ((pfn % PFN_BUFBITMAP) == 0) {
 			if (info->len_bitmap - bm2.offset < BUFSIZE_BITMAP)
@@ -5325,7 +5341,7 @@ write_kdump_pages()
 	/*
 	 * Print the progress of the end.
 	 */
-	print_progress(num_dumpable, num_dumpable);
+	print_progress(PROGRESS_COPY, num_dumpable, num_dumpable);
 	PROGRESS_MSG("\n");
 
 	ret = TRUE;