add function get_swap_mem() to check swap size,if no swap used, using all free mem for mmap.
Signed-off-by: Shang Yanfeng <[email protected]> --- testcases/kernel/mem/mmapstress/mmapstress06.c | 110 +++++++++++++++--------- 1 files changed, 68 insertions(+), 42 deletions(-) diff --git a/testcases/kernel/mem/mmapstress/mmapstress06.c b/testcases/kernel/mem/mmapstress/mmapstress06.c index 9ef4dbd..ef11bc3 100644 --- a/testcases/kernel/mem/mmapstress/mmapstress06.c +++ b/testcases/kernel/mem/mmapstress/mmapstress06.c @@ -31,9 +31,11 @@ #define _KMEMUSER #include <sys/types.h> #include <sys/mman.h> +#include <sys/sysinfo.h> #include <unistd.h> #include <stdio.h> #include <errno.h> +#include <time.h> /***** LTP Port *****/ #include "test.h" @@ -42,76 +44,100 @@ #define PASSED 1 int local_flag = PASSED; -char *TCID = "mmapstress06"; //mfile_swap +char *TCID = "mmapstress06"; /* mfile_swap */ FILE *temp; int TST_TOTAL = 1; -int anyfail(); -void ok_exit(); -/***** ** ** *****/ - #define ANON_GRAN_PAGES_MAX (32U) - -extern time_t time(time_t *); -extern char *ctime(const time_t *); -extern int atoi(const char *); - #define NMFPTEPG (1024) #define ERROR(M) (void)fprintf(stderr, "%s: errno = %d; " M "\n", \ argv[0], errno); +void ok_exit() +{ + tst_resm(TPASS, "Test passed\n"); + tst_exit(); +} + +int anyfail() +{ + tst_resm(TFAIL, "Test failed\n"); + tst_exit(); + return 0; +} -int -main(int argc, char *argv[]) { +unsigned long get_free_mem() +{ + struct sysinfo board_sysinfo; + unsigned long avail_mem; + if (sysinfo(&board_sysinfo)) + perror("sysinfo failed\n"); + avail_mem = board_sysinfo.freeram; + return avail_mem; +} + +unsigned long get_swap_mem() +{ + struct sysinfo board_sysinfo; + unsigned long totalswap; + if (sysinfo(&board_sysinfo)) + perror("sysinfo failed\n"); + totalswap = board_sysinfo.totalswap; + return totalswap; +} + +int main(int argc, char *argv[]) +{ caddr_t mmapaddr; size_t pagesize = sysconf(_SC_PAGE_SIZE); time_t t; - int sleep_time=0; + int sleep_time = 0; if (!argc) { (void)fprintf(stderr, "argc == 0\n"); anyfail(); } - if (argc != 2 || !(sleep_time = atoi(argv[1]))) { + sleep_time = atoi(argv[1]); + if (argc != 2 || !(sleep_time)) { (void)fprintf(stderr, "usage: %s sleep_time\n", argv[0]); anyfail(); } (void)time(&t); -// (void)printf("%s: Started %s", argv[0], ctime(&t)); LTP Port +/* (void)printf("%s: Started %s", argv[0], ctime(&t)); LTP Port */ if (sbrk(pagesize - ((ulong)sbrk(0) & (pagesize-1))) == (char *)-1) { ERROR("couldn't round up brk"); - anyfail(); + anyfail(); } - if ((mmapaddr = sbrk(0)) == (char *)-1) { + mmapaddr = sbrk(0); + if (mmapaddr == (char *)-1) { ERROR("couldn't find top of brk"); - anyfail(); + anyfail(); } - /* mmapaddr is now on a page boundary after the brk segment */ - if (mmap(mmapaddr, (ANON_GRAN_PAGES_MAX*NMFPTEPG+1)*pagesize, PROT_READ|PROT_WRITE,MAP_ANONYMOUS|MAP_SHARED, 0, 0)==(caddr_t)-1) - { - ERROR("large mmap failed"); - printf ("for this test to run, it needs a mmap space of\n"); - printf ("%d pages\n", (ANON_GRAN_PAGES_MAX*NMFPTEPG+1)); - return 1; +/* mmapaddr is now on a page boundary after the brk segment */ + if (get_swap_mem()) { + if (mmap(mmapaddr, (ANON_GRAN_PAGES_MAX*NMFPTEPG+1)*pagesize, + PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_SHARED, + 0, 0) == (caddr_t)-1) { + ERROR("large mmap failed"); + printf("for this test to run," + "it needs a mmap space of\n"); + printf("%d pages\n", (ANON_GRAN_PAGES_MAX*NMFPTEPG+1)); + return 1; + } + } else { + if (mmap(mmapaddr, get_free_mem(), + PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_SHARED, + 0, 0) == (caddr_t)-1) { + ERROR("large mmap failed"); + printf("for this test to run," + "it needs a mmap space of\n"); + printf("%ld K memory\n", get_free_mem()); + return 1; + } } + (void)sleep(sleep_time); (void)time(&t); -// (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP Port +/* (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP Porti */ ok_exit(); tst_exit(); } - -/***** LTP Port *****/ -void ok_exit() -{ - tst_resm(TPASS, "Test passed\n"); - tst_exit(); -} - -int anyfail() -{ - tst_resm(TFAIL, "Test failed\n"); - tst_exit(); - return 0; -} - -/***** ** ** *****/ \ No newline at end of file -- 1.6.3.1 ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
