Hi all, I want to calculate the total kernel memory usage. cat /proc/meminfo MemTotal: 4131168 kB MemFree: 336848 kB Buffers: 261776 kB Cached: 3115752 kB SwapCached: 264 kB Active: 1536344 kB Inactive: 1922636 kB HighTotal: 3260052 kB HighFree: 149984 kB LowTotal: 871116 kB LowFree: 186864 kB SwapTotal: 2072376 kB SwapFree: 2070544 kB Dirty: 20956 kB Writeback: 0 kB AnonPages: 81080 kB Mapped: 21216 kB Slab: 205672 kB SReclaimable: 184296 kB SUnreclaim: 21376 kB PageTables: 5848 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 4137960 kB Committed_AS: 245100 kB VmallocTotal: 114680 kB VmallocUsed: 4724 kB VmallocChunk: 109804 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 4096 kB DirectMap2M: 913408 kB so I want to know the method by which I can know the amout of memory kernel is using at any instance of time. How can i find this. since as far as i know vmallocused =vmalloc allocation+ ioremap. also ioremap can be allocated multiple times. So is there any method to do exact calculation. Thanks