/proc/PID/smaps: consistent whitespace output format

The keys in smaps output are padded to fixed width with spaces.  All
except for THPeligible that uses tabs (only since commit c06306696f83
("mm: thp: fix false negative of shmem vma's THP eligibility")).

Unify the output formatting to save time debugging some naïve parsers.
(Part of the unification is also aligning FilePmdMapped with others.)

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200728083207.17531-1-mkoutny@suse.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index dbda449..5066b02 100644 (file)
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -786,7 +786,7 @@ static void __show_smap(struct seq_file *m, const struct mem_size_stats *mss,
        SEQ_PUT_DEC(" kB\nLazyFree:       ", mss->lazyfree);
        SEQ_PUT_DEC(" kB\nAnonHugePages:  ", mss->anonymous_thp);
        SEQ_PUT_DEC(" kB\nShmemPmdMapped: ", mss->shmem_thp);
-       SEQ_PUT_DEC(" kB\nFilePmdMapped: ", mss->file_thp);
+       SEQ_PUT_DEC(" kB\nFilePmdMapped:  ", mss->file_thp);
        SEQ_PUT_DEC(" kB\nShared_Hugetlb: ", mss->shared_hugetlb);
        seq_put_decimal_ull_width(m, " kB\nPrivate_Hugetlb: ",
                                  mss->private_hugetlb >> 10, 7);
@@ -816,7 +816,7 @@ static int show_smap(struct seq_file *m, void *v)
 
        __show_smap(m, &mss, false);
 
-       seq_printf(m, "THPeligible:             %d\n",
+       seq_printf(m, "THPeligible:    %d\n",
                   transparent_hugepage_enabled(vma));
 
        if (arch_pkeys_enabled())