|
#!/bin/bash set -x echo 0 >/debug/tracing/tracing_enabled cat mmap.list1 > /debug/tracing/set_ftrace_filter echo function > /debug/tracing/current_tracer echo func_stack_trace > /debug/tracing/trace_options echo 1 >/debug/tracing/tracing_enabled /root/a.out 1000 cat /debug/tracing/stack_trace echo 0 > /proc/sys/kernel/stack_tracer_enabled echo 0 >/debug/tracing/tracing_enabled cat /debug/tracing/trace | tee ftrace/${0}$$.log where mmap.list will contain a few of the mmap* related API (just an example): mmap mmap_init mmap_kmem mmap_mem mmap_mem_ops mmap_min_addr mmap_min_addr_handler mmap_region mmap_rnd mmap_zero mon_bin_mmap node_memmap_size_bytes Where a.out 1000 is the following program: #include <sys/mman.h> #include <sys/stat.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #define handle_error(msg) \ do { perror(msg); exit(EXIT_FAILURE); } while (0) int main(int argc, char *argv[]) { int length1 = atoi(argv[1]); unsigned char *addr; if ((addr = mmap(NULL, (size_t) length1 * 1024 * 1024 , PROT_READ | PROT_WRITE , MAP_SHARED | MAP_ANONYMOUS, -1, 0)) == MAP_FAILED) { perror("mmap()"); abort(); } else printf("good one!!!!\n"); memset(addr, 'c', length1 * 1024 * 1024); } /* main */ And the results: gnome-panel-2909 [000] 2869.687263: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.687264: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687267: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.687267: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687271: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.687271: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687276: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.687278: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687284: __perf_event_mmap <-mmap_region gnome-panel-2909 [000] 2869.687284: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687297: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.687298: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.687301: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.687301: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687304: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.687305: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687308: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.687308: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687312: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.687312: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.687323: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.687323: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695637: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.695638: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.695642: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.695643: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695646: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695647: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695650: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.695650: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695654: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695654: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695762: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.695762: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.695766: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.695766: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695772: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695773: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695776: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.695776: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695780: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695780: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695785: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.695786: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695791: __perf_event_mmap <-mmap_region gnome-panel-2909 [000] 2869.695791: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695815: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.695815: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.695819: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.695819: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695822: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695823: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695826: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.695826: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695830: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.695830: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.695838: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.695838: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699423: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.699425: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.699429: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.699429: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699434: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.699435: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699438: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.699438: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699442: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.699442: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699447: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.699448: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699454: __perf_event_mmap <-mmap_region gnome-panel-2909 [000] 2869.699454: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699466: sys_mmap <-system_call_fastpath gnome-panel-2909 [000] 2869.699466: <stack trace> => system_call_fastpath gnome-panel-2909 [000] 2869.699469: do_mmap_pgoff <-sys_mmap gnome-panel-2909 [000] 2869.699470: <stack trace> => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699474: security_file_mmap <-do_mmap_pgoff gnome-panel-2909 [000] 2869.699474: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699477: cap_file_mmap <-security_file_mmap gnome-panel-2909 [000] 2869.699478: <stack trace> => security_file_mmap => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699481: mmap_region <-do_mmap_pgoff gnome-panel-2909 [000] 2869.699481: <stack trace> => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [000] 2869.699491: generic_file_mmap <-mmap_region gnome-panel-2909 [000] 2869.699492: <stack trace> => mmap_region => do_mmap_pgoff => sys_mmap => system_call_fastpath gnome-panel-2909 [001] 2869.715248: security_file_mmap <-expand_downwards gnome-panel-2909 [001] 2869.715251: <stack trace> => expand_downwards => expand_stack => do_page_fault => page_fault gnome-panel-2909 [001] 2869.715257: cap_file_mmap <-security_file_mmap gnome-panel-2909 [001] 2869.715258: <stack trace> => security_file_mmap => expand_downwards => expand_stack => do_page_fault => page_fault gnome-panel-2909 [001] 2869.716277: security_file_mmap <-expand_downwards gnome-panel-2909 [001] 2869.716278: <stack trace> => expand_downwards => expand_stack => do_page_fault => page_fault gnome-panel-2909 [001] 2869.716283: cap_file_mmap <-security_file_mmap gnome-panel-2909 [001] 2869.716283: <stack trace> => security_file_mmap => expand_downwards => expand_stack => do_page_fault => page_fault cat-4807 [000] 2869.729087: exit_mmap <-mmput cat-4807 [000] 2869.729089: <stack trace> => mmput => exit_mm => do_exit => sys_exit_group => sys_exit_group => system_call_fastpath |
