• Pintu Kumar's avatar
    fs/proc/meminfo.c: include cma info in proc/meminfo · 47f8f929
    Pintu Kumar authored
    This patch include CMA info (CMATotal, CMAFree) in /proc/meminfo.
    Currently, in a CMA enabled system, if somebody wants to know the total
    CMA size declared, there is no way to tell, other than the dmesg or
    /var/log/messages logs.
    
    With this patch we are showing the CMA info as part of meminfo, so that it
    can be determined at any point of time.  This will be populated only when
    CMA is enabled.
    
    Below is the sample output from a ARM based device with RAM:512MB and CMA:16MB.
    
      MemTotal:         471172 kB
      MemFree:          111712 kB
      MemAvailable:     271172 kB
      .
      .
      .
      CmaTotal:          16384 kB
      CmaFree:            6144 kB
    
    This patch also fix below checkpatch errors that were found during these changes.
    
      ERROR: space required after that ',' (ctx:ExV)
      199: FILE: fs/proc/meminfo.c:199:
      +       ,atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
              ^
    
      ERROR: space required after that ',' (ctx:ExV)
      202: FILE: fs/proc/meminfo.c:202:
      +       ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
              ^
    
      ERROR: space required after that ',' (ctx:ExV)
      206: FILE: fs/proc/meminfo.c:206:
      +       ,K(totalcma_pages)
              ^
    
      total: 3 errors, 0 warnings, 2 checks, 236 lines checked
    Signed-off-by: default avatarPintu Kumar <pintu.k@samsung.com>
    Signed-off-by: default avatarVishnu Pratap Singh <vishnu.ps@samsung.com>
    Acked-by: default avatarMichal Nazarewicz <mina86@mina86.com>
    Cc: Rafael Aquini <aquini@redhat.com>
    Cc: Jerome Marchand <jmarchan@redhat.com>
    Cc: Marek Szyprowski <m.szyprowski@samsung.com>
    Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    47f8f929
meminfo.c 5.87 KB