A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-07 04:12:04 -04:00
Code Issues Projects Releases Packages Wiki Activity

BACKPORT: FROMGIT: userfaultfd/selftests: only dump counts if mode enabled

Browse source 
WP and MINOR modes are conditionally enabled on specific memory types.
This patch avoids dumping tons of zeros for those cases when the modes are
not supported at all.

Link: https://lkml.kernel.org/r/20210412232753.1012412-5-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Lokesh Gidra <lokeshgidra@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Oliver Upton <oupton@google.com>
Cc: Shaohua Li <shli@fb.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Wang Qing <wangqing@vivo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
(cherry picked from commit 5edabbbe74eee6c1c59dafbbfb5528e391be447c
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
akpm)
Link: https://lore.kernel.org/patchwork/patch/1412453/

Conflicts: tools/testing/selftests/vm/userfaultfd.c
(1. Manual rebase
2. Removed 'wp_total' related change in uffd_stats_report() as
write-protect test doesn't exist.)

Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
Bug: 187930641
Change-Id: I445f883f3402104ea39d50ea60726b16394f6e50
This commit is contained in:
Peter Xu 2021-05-14 10:39:47 +10:00 • committed by Michael Bestas
commit 87f0b565c1
1 changed files with 14 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

21
tools/testing/selftests/vm/userfaultfd.c
View file

@ -157,13 +157,20 @@ static void uffd_stats_report(struct uffd_stats *stats, int n_cpus)
minor_total += stats[i].minor_faults;
}
printf("userfaults: %llu missing (", miss_total);
for (i = 0; i < n_cpus; i++)
printf("%lu+", stats[i].missing_faults);
printf("\b), %llu minor (", minor_total);
for (i = 0; i < n_cpus; i++)
printf("%lu+", stats[i].minor_faults);
printf("\b)\n");
printf("userfaults: ");
if (miss_total) {
printf("%llu missing (", miss_total);
for (i = 0; i < n_cpus; i++)
printf("%lu+", stats[i].missing_faults);
printf("\b) ");
}
if (minor_total) {
printf("%llu minor (", minor_total);
for (i = 0; i < n_cpus; i++)
printf("%lu+", stats[i].minor_faults);
printf("\b)");
}
printf("\n");
}
static int anon_release_pages(char *rel_area)