Quoting Lionel Landwerlin (2017-07-18 18:18:52)
> v2: Add tests regarding removing configs (Matthew)
> Add tests regarding adding/removing configs without permissions
> (Matthew)
>
> v3: Add some flex registers (Matthew)
>
> v4: memset oa_config to 0 (Lionel)
> Change error code for removing unexisting config EINVAL->ENOENT (Lionel)
>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
> ---
> tests/perf.c | 208 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 208 insertions(+)
>
> diff --git a/tests/perf.c b/tests/perf.c
> index 1c5cf351..66ec731a 100644
> --- a/tests/perf.c
> +++ b/tests/perf.c
> @@ -146,6 +146,36 @@ enum drm_i915_perf_record_type {
> };
> #endif /* !DRM_I915_PERF_OPEN */
>
> +#ifndef DRM_IOCTL_I915_PERF_ADD_CONFIG
> +
> +#define DRM_I915_PERF_ADD_CONFIG 0x37
> +#define DRM_I915_PERF_REMOVE_CONFIG 0x38
> +
> +#define DRM_IOCTL_I915_PERF_ADD_CONFIG DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_PERF_ADD_CONFIG, struct drm_i915_perf_oa_config)
> +#define DRM_IOCTL_I915_PERF_REMOVE_CONFIG DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_PERF_REMOVE_CONFIG, __u64)
> +
> +/**
> + * Structure to upload perf dynamic configuration into the kernel.
> + */
> +struct drm_i915_perf_oa_config {
> + /** String formatted like "%08x-%04x-%04x-%04x-%012x" */
> + __u64 uuid;
> +
> + __u32 n_mux_regs;
> + __u32 pad0;
> + __u64 mux_regs;
> +
> + __u32 n_boolean_regs;
> + __u32 pad1;
> + __u64 boolean_regs;
> +
> + __u32 n_flex_regs;
> + __u32 pad2;
> + __u64 flex_regs;
> +};
> +
> +#endif /* !DRM_IOCTL_I915_PERF_ADD_CONFIG */
> +
> struct accumulator {
> #define MAX_RAW_OA_COUNTERS 62
> enum drm_i915_oa_format format;
> @@ -4001,6 +4031,175 @@ test_rc6_disable(void)
> igt_assert_neq(n_events_end - n_events_start, 0);
> }
>
> +static void
> +test_invalid_userspace_config_create(void)
> +{
> + struct drm_i915_perf_oa_config config;
> + const char *uuid = "01234567-0123-0123-0123-0123456789ab";
> + const char *invalid_uuid = "blablabla-wrong";
> + uint32_t mux_regs[] = { 0x9888 /* NOA_WRITE */, 0x0 };
> + uint32_t invalid_mux_regs[] = { 0x12345678 /* invalid register */, 0x0 };
> +
> + memset(&config, 0, sizeof(config));
> +
> + /* invalid uuid */
> + config.uuid = to_user_pointer(invalid_uuid);
> + config.n_mux_regs = 1;
> + config.mux_regs = to_user_pointer(mux_regs);
> + config.n_boolean_regs = 0;
> + config.n_flex_regs = 0;
> +
> + do_ioctl_err(drm_fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &config, EINVAL);
Create little stubs like
int __i915_perf_add_config(int fd, config)
{
int err;
err = 0;
if (igt_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, config))
err = -errno;
return err;
}
void i915_perf_add_config(int fd, config)
{
igt_assert_eq(__i915_perf_add_config(fd, config), 0);
}
and here use igt_assert_eq(__i915_perf_add_config(fd, config), -EINVAL);
The benefit is that if you ever do hit the error, the message is much
more understandable than the macro expansion of
DRM_IOCTL_I915_PERF_ADD_CONFIG.
-Chris
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