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PROFILE_mmap_XXX: more detailed mmap profiling

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This commit is contained in:
Balazs Gerofi
2017-03-06 14:05:18 +09:00
parent d75be7228b
commit a256280118
3 changed files with 17 additions and 0 deletions
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3
kernel/include/profile.h
View File

@@ -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 */
};

3
kernel/profile.c
View File

@@ -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",
""
};

11
kernel/syscall.c
View File

@@ -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);