From 46d678c8e9d0dd4c07e2efe1cda2eab3c7ad5779 Mon Sep 17 00:00:00 2001
From: Timo Kokkonen <kaapeli@itanic.dy.fi>
Date: Fri, 23 Jul 2010 19:37:02 +0300
Subject: [PATCH] analyzer: Add support for dumping process page maps

This code will dump the process page mappings, sorted by the the
actual (ram + swap) size. The size of the mapping address space is
printed as well.

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>
---
 analyze.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 analyze.h |  1 +
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/analyze.c b/analyze.c
index 67acb2f..dda98bb 100644
--- a/analyze.c
+++ b/analyze.c
@@ -112,7 +112,7 @@ void print_pid_stats(struct pageframe *pf, struct process *process_list,
 		biggest = MAX(biggest, ps->pages_present + ps->pages_swapped);
 	}
 
-	printf("   in ram   swapped     total   pid");
+	printf("  in ram  swapped    total   pid");
 	if (opts->with_threads)
 		printf("   tid");
 	printf(" name\n");
@@ -136,7 +136,7 @@ restart:
 		if (total == 0)
 			continue;
 
-		printf("%6lld %sB %6lld %sB %6lld %sB %5d ",
+		printf("%5lld %sB %5lld %sB %5lld %sB %5d ",
 			PAGE_TO_NICE(present), PAGE_TO_NICE_UNIT(present),
 			PAGE_TO_NICE(swapped), PAGE_TO_NICE_UNIT(swapped),
 			PAGE_TO_NICE(total), PAGE_TO_NICE_UNIT(total),
@@ -158,3 +158,62 @@ restart:
 
 	printf("Total %d processes\n", processes);
 }
+
+static void _dump_process_maps(struct process *ps)
+{
+	struct maps *map;
+	long int swapped, present, total;
+	long int biggest = 0, second_biggest;
+	int count, processes = 0;
+
+	list_for_each_entry(map, &ps->maps->list, list) {
+		biggest = MAX(biggest, map->pages_present + map->pages_swapped);
+	}
+
+	printf("process: [%d] %s\n", ps->pid, ps->name);
+	printf("    size   in ram  swapped    total name\n");
+restart:
+	second_biggest = 0;
+	count = 0;
+	list_for_each_entry(map, &ps->maps->list, list) {
+
+		present = map->pages_present;
+		swapped = map->pages_swapped;
+		total = present + swapped;
+
+		second_biggest = (total < biggest) &&
+			(second_biggest < total) ?
+			total : second_biggest;
+
+		if (total != biggest)
+			continue;
+
+		printf("%5lld %sB %5lld %sB %5lld %sB %5lld %sB %s\n",
+			NICE_DIV(map->size), NICE_UNIT(map->size),
+			PAGE_TO_NICE(present), PAGE_TO_NICE_UNIT(present),
+			PAGE_TO_NICE(swapped), PAGE_TO_NICE_UNIT(swapped),
+			PAGE_TO_NICE(total), PAGE_TO_NICE_UNIT(total),
+			map->name);
+
+		count++;
+		processes++;
+	}
+
+	if (count > 0 && biggest > 0) {
+		biggest = second_biggest;
+		goto restart;
+	}
+	printf("\n");
+}
+
+void dump_process_maps(struct process *process_list)
+{
+	struct process *ps;
+
+	if (list_empty(&process_list->list))
+		_dump_process_maps(process_list);
+
+	list_for_each_entry(ps, &process_list->list, list) {
+		_dump_process_maps(ps);
+	}
+}
diff --git a/analyze.h b/analyze.h
index 5ec2914..2d5010c 100644
--- a/analyze.h
+++ b/analyze.h
@@ -6,5 +6,6 @@
 void print_page_stats(struct pageframe *pf);
 void print_pid_stats(struct pageframe *pf, struct process *process_list,
 		struct parse_opts *opts);
+void dump_process_maps(struct process *process_list);
 
 #endif
-- 
2.45.0