Provided by: linux-xilinx-zynqmp-tools-common_5.15.0-1031.35_all bug


       perf-kmem - Tool to trace/measure kernel memory properties


       perf kmem {record|stat} [<options>]


       There are two variants of perf kmem:

           'perf kmem record <command>' to record the kmem events
           of an arbitrary workload.

           'perf kmem stat' to report kernel memory statistics.


       -i <file>, --input=<file>
           Select the input file (default: unless stdin is a fifo)

       -f, --force
           Don’t do ownership validation

       -v, --verbose
           Be more verbose. (show symbol address, etc)

           Show per-callsite statistics

           Show per-allocation statistics

       -s <key[,key2...]>, --sort=<key[,key2...]>
           Sort the output (default: frag,hit,bytes for slab and bytes,hit for page). Available
           sort keys are ptr, callsite, bytes, hit, pingpong, frag for slab and page, callsite,
           bytes, hit, order, migtype, gfp for page. This option should be preceded by one of the
           mode selection options - i.e. --slab, --page, --alloc and/or --caller.

       -l <num>, --line=<num>
           Print n lines only

           Print raw ip instead of symbol

           Analyze SLAB allocator events.

           Analyze page allocator events

           Show live page stat. The perf kmem shows total allocation stat by default, but this
           option shows live (currently allocated) pages instead. (This option works with --page
           option only)

           Only analyze samples within given time window: <start>,<stop>. Times have the format
           seconds.microseconds. If start is not given (i.e., time string is ,x.y) then analysis
           starts at the beginning of the file. If stop time is not given (i.e, time string is
           x.y,) then analysis goes to end of file.