On Tue, 20 Feb 2024, Maciej Wieczor-Retman wrote:
Ctrl-c handler isn't aware of what test is currently running. Because of that it executes all cleanups even if they aren't necessary. Since the ctrl-c handler uses the sigaction system no parameters can be passed to it as function arguments.
Add a global variable to make ctrl-c handler aware of the currently run test and only execute the correct cleanup callback.
Signed-off-by: Maciej Wieczor-Retman maciej.wieczor-retman@intel.com
tools/testing/selftests/resctrl/resctrl.h | 2 ++ .../testing/selftests/resctrl/resctrl_tests.c | 20 +++++++++---------- tools/testing/selftests/resctrl/resctrl_val.c | 2 +- 3 files changed, 13 insertions(+), 11 deletions(-)
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 0f49df4961ea..79b45cbeb628 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -128,6 +128,8 @@ extern pid_t bm_pid, ppid; extern char llc_occup_path[1024]; +extern struct resctrl_test current_test;
Why this is not just a pointer?
int get_vendor(void); bool check_resctrlfs_support(void); int filter_dmesg(void); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index 75fc49ba3efb..b17f7401892c 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -14,6 +14,12 @@ static volatile int sink_target; volatile int *value_sink = &sink_target; +/*
- Set during test preparation for the cleanup function pointer used in
- ctrl-c sa_sigaction
- */
+struct resctrl_test current_test;
static struct resctrl_test *resctrl_tests[] = { &mbm_test, &mba_test, @@ -75,18 +81,12 @@ static void cmd_help(void) printf("\t-h: help\n"); } -void tests_cleanup(void) -{
- mbm_test_cleanup();
- mba_test_cleanup();
- cmt_test_cleanup();
- cat_test_cleanup();
-}
This should be removed from resctrl.h too.
-static int test_prepare(void) +static int test_prepare(const struct resctrl_test *test) { int res;
- current_test = *test;
I'd prefer to keep this internal to signal handling functions so that either the struct resctrl_test or just the cleanup handler is passed to signal_handler_register().
It'd also allow current_test (or the cleanup function ptr) to be static.