From a2562801187aafd4e45469f5374e8b8dac8b5f0d Mon Sep 17 00:00:00 2001
From: Balazs Gerofi <bgerofi@riken.jp>
Date: Mon, 6 Mar 2017 14:05:18 +0900
Subject: [PATCH] PROFILE_mmap_XXX: more detailed mmap profiling

---
 kernel/include/profile.h |  3 +++
 kernel/profile.c         |  3 +++
 kernel/syscall.c         | 11 +++++++++++
 3 files changed, 17 insertions(+)

diff --git a/kernel/include/profile.h b/kernel/include/profile.h
index 2b3152c2..ccfac9a7 100644
--- a/kernel/include/profile.h
+++ b/kernel/include/profile.h
@@ -34,7 +34,10 @@ struct profile_event {
 enum profile_event_type {
 	PROFILE_page_fault = PROFILE_EVENT_MIN,
 	PROFILE_mpol_alloc_missed,
+	PROFILE_mmap_anon_contig_phys,
 	PROFILE_mmap_anon_no_contig_phys,
+	PROFILE_mmap_regular_file,
+	PROFILE_mmap_device_file,
 	PROFILE_EVENT_MAX	/* Should be the last event type */
 };
 
diff --git a/kernel/profile.c b/kernel/profile.c
index 6afdaa5b..61d393bb 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -59,7 +59,10 @@ char *profile_event_names[] =
 {
 	"page_fault",
 	"mpol_alloc_missed",
+	"mmap_anon_contig_phys",
 	"mmap_anon_no_contig_phys",
+	"mmap_regular_file",
+	"mmap_device_file",
 	""
 };
 
diff --git a/kernel/syscall.c b/kernel/syscall.c
index 414edd13..e52a17cb 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -1189,6 +1189,11 @@ do_mmap(const intptr_t addr0, const size_t len0, const int prot,
 			error = -ENODEV;
 		}
 #endif
+#ifdef PROFILE_ENABLE
+		if (!error) {
+			profile_event_add(PROFILE_mmap_regular_file, len);
+		}
+#endif // PROFILE_ENABLE
 		if (error == -ESRCH) {
 			dkprintf("do_mmap:hit non VREG\n");
 			/*
@@ -1205,6 +1210,9 @@ do_mmap(const intptr_t addr0, const size_t len0, const int prot,
 					prot, (flags & (MAP_POPULATE | MAP_LOCKED)));
 
 			if (!error) {
+#ifdef PROFILE_ENABLE
+				profile_event_add(PROFILE_mmap_device_file, len);
+#endif // PROFILE_ENABLE
 				dkprintf("%s: device fd: %d off: %lu mapping at %p - %p\n", 
 						__FUNCTION__, fd, off, addr, addr + len); 
 			}
@@ -1253,6 +1261,9 @@ do_mmap(const intptr_t addr0, const size_t len0, const int prot,
 			}
 		}
 		else {
+#ifdef PROFILE_ENABLE
+			profile_event_add(PROFILE_mmap_anon_contig_phys, len);
+#endif // PROFILE_ENABLE
 			dkprintf("%s: 0x%x:%lu MAP_ANONYMOUS "
 					"allocated %d pages, p2align: %lx\n",
 					__FUNCTION__, addr, len, npages, p2align);