diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2018-08-22 07:52:52 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-22 20:52:44 +0300 |
| commit | 8e68d689afe3284a5bc1663562d3e0a45d1c64fd (patch) | |
| tree | 0317d6fa3905ae005631c89ee9c893b2b784c9bf /fs/proc/task_mmu.c | |
| parent | 871305bb20280804882bd08b39a38ccf1b4b68f9 (diff) | |
| download | linux-8e68d689afe3284a5bc1663562d3e0a45d1c64fd.tar.xz | |
mm: /proc/pid/smaps: factor out mem stats gathering
To prepare for handling /proc/pid/smaps_rollup differently from
/proc/pid/smaps factor out vma mem stats gathering from show_smap() - it
will be used by both.
Link: http://lkml.kernel.org/r/20180723111933.15443-3-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Daniel Colascione <dancol@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/task_mmu.c')
| -rw-r--r-- | fs/proc/task_mmu.c | 55 |
1 files changed, 31 insertions, 24 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index a3f98ca50981..d2ca88c92d9d 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -702,14 +702,9 @@ static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask, } #endif /* HUGETLB_PAGE */ -#define SEQ_PUT_DEC(str, val) \ - seq_put_decimal_ull_width(m, str, (val) >> 10, 8) -static int show_smap(struct seq_file *m, void *v) +static void smap_gather_stats(struct vm_area_struct *vma, + struct mem_size_stats *mss) { - struct proc_maps_private *priv = m->private; - struct vm_area_struct *vma = v; - struct mem_size_stats mss_stack; - struct mem_size_stats *mss; struct mm_walk smaps_walk = { .pmd_entry = smaps_pte_range, #ifdef CONFIG_HUGETLB_PAGE @@ -717,23 +712,6 @@ static int show_smap(struct seq_file *m, void *v) #endif .mm = vma->vm_mm, }; - int ret = 0; - bool rollup_mode; - bool last_vma; - - if (priv->rollup) { - rollup_mode = true; - mss = priv->rollup; - if (mss->first) { - mss->first_vma_start = vma->vm_start; - mss->first = false; - } - last_vma = !m_next_vma(priv, vma); - } else { - rollup_mode = false; - memset(&mss_stack, 0, sizeof(mss_stack)); - mss = &mss_stack; - } smaps_walk.private = mss; @@ -765,6 +743,35 @@ static int show_smap(struct seq_file *m, void *v) walk_page_vma(vma, &smaps_walk); if (vma->vm_flags & VM_LOCKED) mss->pss_locked += mss->pss; +} + +#define SEQ_PUT_DEC(str, val) \ + seq_put_decimal_ull_width(m, str, (val) >> 10, 8) +static int show_smap(struct seq_file *m, void *v) +{ + struct proc_maps_private *priv = m->private; + struct vm_area_struct *vma = v; + struct mem_size_stats mss_stack; + struct mem_size_stats *mss; + int ret = 0; + bool rollup_mode; + bool last_vma; + + if (priv->rollup) { + rollup_mode = true; + mss = priv->rollup; + if (mss->first) { + mss->first_vma_start = vma->vm_start; + mss->first = false; + } + last_vma = !m_next_vma(priv, vma); + } else { + rollup_mode = false; + memset(&mss_stack, 0, sizeof(mss_stack)); + mss = &mss_stack; + } + + smap_gather_stats(vma, mss); if (!rollup_mode) { show_map_vma(m, vma); |