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authorJason Wessel <jason.wessel@windriver.com>2008-04-24 17:57:23 -0400
committerJason Wessel <jason.wessel@windriver.com>2008-05-05 08:13:21 -0400
commit7cfcd985d36031459cc64e3843ea36a4d801097d (patch)
tree6e5b83ddcf390fccd778a6c387cb5734a19cbc81 /drivers
parent001fddf5fdcfe2c08ac9c4e5ca80c5e5698363bb (diff)
kgdb: 1000 loops for the single step test in kgdbts
The single step test is not terribly costly and it should be able to pass at 1000 loops successfully in under 1 second. A non-kgdb timing regression was found using this test, but it did not occur frequently because by default the test was only executed a single time. This patch changes the default for the single step test to 1000 iterations and allows for individual configuration of the single step test to further exercise the kgdb subsystem when needed. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/misc/kgdbts.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index 879fcbde32c2..fa394104339c 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -47,6 +47,7 @@
47 * to test the HW NMI watchdog 47 * to test the HW NMI watchdog
48 * F## = Break at do_fork for ## iterations 48 * F## = Break at do_fork for ## iterations
49 * S## = Break at sys_open for ## iterations 49 * S## = Break at sys_open for ## iterations
50 * I## = Run the single step test ## iterations
50 * 51 *
51 * NOTE: that the do_fork and sys_open tests are mutually exclusive. 52 * NOTE: that the do_fork and sys_open tests are mutually exclusive.
52 * 53 *
@@ -875,7 +876,9 @@ static void kgdbts_run_tests(void)
875 char *ptr; 876 char *ptr;
876 int fork_test = 0; 877 int fork_test = 0;
877 int do_sys_open_test = 0; 878 int do_sys_open_test = 0;
879 int sstep_test = 1000;
878 int nmi_sleep = 0; 880 int nmi_sleep = 0;
881 int i;
879 882
880 ptr = strstr(config, "F"); 883 ptr = strstr(config, "F");
881 if (ptr) 884 if (ptr)
@@ -886,6 +889,9 @@ static void kgdbts_run_tests(void)
886 ptr = strstr(config, "N"); 889 ptr = strstr(config, "N");
887 if (ptr) 890 if (ptr)
888 nmi_sleep = simple_strtol(ptr+1, NULL, 10); 891 nmi_sleep = simple_strtol(ptr+1, NULL, 10);
892 ptr = strstr(config, "I");
893 if (ptr)
894 sstep_test = simple_strtol(ptr+1, NULL, 10);
889 895
890 /* required internal KGDB tests */ 896 /* required internal KGDB tests */
891 v1printk("kgdbts:RUN plant and detach test\n"); 897 v1printk("kgdbts:RUN plant and detach test\n");
@@ -894,8 +900,13 @@ static void kgdbts_run_tests(void)
894 run_breakpoint_test(0); 900 run_breakpoint_test(0);
895 v1printk("kgdbts:RUN bad memory access test\n"); 901 v1printk("kgdbts:RUN bad memory access test\n");
896 run_bad_read_test(); 902 run_bad_read_test();
897 v1printk("kgdbts:RUN singlestep breakpoint test\n"); 903 v1printk("kgdbts:RUN singlestep test %i iterations\n", sstep_test);
898 run_singlestep_break_test(); 904 for (i = 0; i < sstep_test; i++) {
905 run_singlestep_break_test();
906 if (i % 100 == 0)
907 v1printk("kgdbts:RUN singlestep [%i/%i]\n",
908 i, sstep_test);
909 }
899 910
900 /* ===Optional tests=== */ 911 /* ===Optional tests=== */
901 912