| Message ID | 20240420151741.962500-25-atishp@rivosinc.com |
|---|---|
| State | Accepted |
| Commit | 5ef2f3d4e747c7851678ad2b70e37be886a8c9eb |
| Headers | show |
| Series | RISC-V SBI v2.0 PMU improvements and Perf sampling in KVM guest | expand |
On Sat, Apr 20, 2024 at 5:18 AM Atish Patra <atishp@rivosinc.com> wrote: > > SBI PMU test comprises of multiple tests and user may want to run > only a subset depending on the platform. The most common case would > be to run all to validate all the tests. However, some platform may > not support all events or all ISA extensions. > > The commandline option allows user to disable any set of tests if > they want to. > > Suggested-by: Andrew Jones <ajones@ventanamicro.com> > Signed-off-by: Atish Patra <atishp@rivosinc.com> LGTM. Reviewed-by: Anup Patel <anup@brainfault.org> Regards, Anup > --- > .../selftests/kvm/riscv/sbi_pmu_test.c | 73 ++++++++++++++++--- > 1 file changed, 64 insertions(+), 9 deletions(-) > > diff --git a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > index 0fd9b76ae838..69bb94e6b227 100644 > --- a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > +++ b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > @@ -33,6 +33,13 @@ static unsigned long counter_mask_available; > > static bool illegal_handler_invoked; > > +#define SBI_PMU_TEST_BASIC BIT(0) > +#define SBI_PMU_TEST_EVENTS BIT(1) > +#define SBI_PMU_TEST_SNAPSHOT BIT(2) > +#define SBI_PMU_TEST_OVERFLOW BIT(3) > + > +static int disabled_tests; > + > unsigned long pmu_csr_read_num(int csr_num) > { > #define switchcase_csr_read(__csr_num, __val) {\ > @@ -608,19 +615,67 @@ static void test_vm_events_overflow(void *guest_code) > test_vm_destroy(vm); > } > > -int main(void) > +static void test_print_help(char *name) > +{ > + pr_info("Usage: %s [-h] [-d <test name>]\n", name); > + pr_info("\t-d: Test to disable. Available tests are 'basic', 'events', 'snapshot', 'overflow'\n"); > + pr_info("\t-h: print this help screen\n"); > +} > + > +static bool parse_args(int argc, char *argv[]) > +{ > + int opt; > + > + while ((opt = getopt(argc, argv, "hd:")) != -1) { > + switch (opt) { > + case 'd': > + if (!strncmp("basic", optarg, 5)) > + disabled_tests |= SBI_PMU_TEST_BASIC; > + else if (!strncmp("events", optarg, 6)) > + disabled_tests |= SBI_PMU_TEST_EVENTS; > + else if (!strncmp("snapshot", optarg, 8)) > + disabled_tests |= SBI_PMU_TEST_SNAPSHOT; > + else if (!strncmp("overflow", optarg, 8)) > + disabled_tests |= SBI_PMU_TEST_OVERFLOW; > + else > + goto done; > + break; > + case 'h': > + default: > + goto done; > + } > + } > + > + return true; > +done: > + test_print_help(argv[0]); > + return false; > +} > + > +int main(int argc, char *argv[]) > { > - test_vm_basic_test(test_pmu_basic_sanity); > - pr_info("SBI PMU basic test : PASS\n"); > + if (!parse_args(argc, argv)) > + exit(KSFT_SKIP); > + > + if (!(disabled_tests & SBI_PMU_TEST_BASIC)) { > + test_vm_basic_test(test_pmu_basic_sanity); > + pr_info("SBI PMU basic test : PASS\n"); > + } > > - test_vm_events_test(test_pmu_events); > - pr_info("SBI PMU event verification test : PASS\n"); > + if (!(disabled_tests & SBI_PMU_TEST_EVENTS)) { > + test_vm_events_test(test_pmu_events); > + pr_info("SBI PMU event verification test : PASS\n"); > + } > > - test_vm_events_snapshot_test(test_pmu_events_snaphost); > - pr_info("SBI PMU event verification with snapshot test : PASS\n"); > + if (!(disabled_tests & SBI_PMU_TEST_SNAPSHOT)) { > + test_vm_events_snapshot_test(test_pmu_events_snaphost); > + pr_info("SBI PMU event verification with snapshot test : PASS\n"); > + } > > - test_vm_events_overflow(test_pmu_events_overflow); > - pr_info("SBI PMU event verification with overflow test : PASS\n"); > + if (!(disabled_tests & SBI_PMU_TEST_OVERFLOW)) { > + test_vm_events_overflow(test_pmu_events_overflow); > + pr_info("SBI PMU event verification with overflow test : PASS\n"); > + } > > return 0; > } > -- > 2.34.1 >
On Tue, Apr 23, 2024 at 02:03:29PM +0500, Muhammad Usama Anjum wrote: ... > > + pr_info("Usage: %s [-h] [-d <test name>]\n", name); > A little weird that we have pr_info named helper to print logs when it is a > userspace application, not kernel code. I'll check it in the source who > added it to the KVM tests. > It was me, as git-blame will easily show you. Why is it "weird"? Applications have needs for pr_info-like functions too, and the pr_info name isn't reserved for the kernel. The only thing weird I see is that I didn't differentiate pr_debug and pr_info messages. I probably should have at least given pr_debug output a 'debug:' prefix. Thanks, drew
diff --git a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c index 0fd9b76ae838..69bb94e6b227 100644 --- a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c +++ b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c @@ -33,6 +33,13 @@ static unsigned long counter_mask_available; static bool illegal_handler_invoked; +#define SBI_PMU_TEST_BASIC BIT(0) +#define SBI_PMU_TEST_EVENTS BIT(1) +#define SBI_PMU_TEST_SNAPSHOT BIT(2) +#define SBI_PMU_TEST_OVERFLOW BIT(3) + +static int disabled_tests; + unsigned long pmu_csr_read_num(int csr_num) { #define switchcase_csr_read(__csr_num, __val) {\ @@ -608,19 +615,67 @@ static void test_vm_events_overflow(void *guest_code) test_vm_destroy(vm); } -int main(void) +static void test_print_help(char *name) +{ + pr_info("Usage: %s [-h] [-d <test name>]\n", name); + pr_info("\t-d: Test to disable. Available tests are 'basic', 'events', 'snapshot', 'overflow'\n"); + pr_info("\t-h: print this help screen\n"); +} + +static bool parse_args(int argc, char *argv[]) +{ + int opt; + + while ((opt = getopt(argc, argv, "hd:")) != -1) { + switch (opt) { + case 'd': + if (!strncmp("basic", optarg, 5)) + disabled_tests |= SBI_PMU_TEST_BASIC; + else if (!strncmp("events", optarg, 6)) + disabled_tests |= SBI_PMU_TEST_EVENTS; + else if (!strncmp("snapshot", optarg, 8)) + disabled_tests |= SBI_PMU_TEST_SNAPSHOT; + else if (!strncmp("overflow", optarg, 8)) + disabled_tests |= SBI_PMU_TEST_OVERFLOW; + else + goto done; + break; + case 'h': + default: + goto done; + } + } + + return true; +done: + test_print_help(argv[0]); + return false; +} + +int main(int argc, char *argv[]) { - test_vm_basic_test(test_pmu_basic_sanity); - pr_info("SBI PMU basic test : PASS\n"); + if (!parse_args(argc, argv)) + exit(KSFT_SKIP); + + if (!(disabled_tests & SBI_PMU_TEST_BASIC)) { + test_vm_basic_test(test_pmu_basic_sanity); + pr_info("SBI PMU basic test : PASS\n"); + } - test_vm_events_test(test_pmu_events); - pr_info("SBI PMU event verification test : PASS\n"); + if (!(disabled_tests & SBI_PMU_TEST_EVENTS)) { + test_vm_events_test(test_pmu_events); + pr_info("SBI PMU event verification test : PASS\n"); + } - test_vm_events_snapshot_test(test_pmu_events_snaphost); - pr_info("SBI PMU event verification with snapshot test : PASS\n"); + if (!(disabled_tests & SBI_PMU_TEST_SNAPSHOT)) { + test_vm_events_snapshot_test(test_pmu_events_snaphost); + pr_info("SBI PMU event verification with snapshot test : PASS\n"); + } - test_vm_events_overflow(test_pmu_events_overflow); - pr_info("SBI PMU event verification with overflow test : PASS\n"); + if (!(disabled_tests & SBI_PMU_TEST_OVERFLOW)) { + test_vm_events_overflow(test_pmu_events_overflow); + pr_info("SBI PMU event verification with overflow test : PASS\n"); + } return 0; }
SBI PMU test comprises of multiple tests and user may want to run only a subset depending on the platform. The most common case would be to run all to validate all the tests. However, some platform may not support all events or all ISA extensions. The commandline option allows user to disable any set of tests if they want to. Suggested-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Atish Patra <atishp@rivosinc.com> --- .../selftests/kvm/riscv/sbi_pmu_test.c | 73 ++++++++++++++++--- 1 file changed, 64 insertions(+), 9 deletions(-)