From 418e3cd8005121601facd46dfc452ef9e40894f6 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 6 Feb 2017 21:36:08 +0000 Subject: [PATCH] drm/i915: Show the current i915_params in debugfs/i915_capabilites Alongside the hw capabilities, it is useful to know which of those have been overridden by the user setting module parameters. v2: Use __always_inline and BUILD_BUG magic Signed-off-by: Chris Wilson Acked-by: Jani Nikula Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170206213608.31328-4-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 3ae06568df7b..152f23db4ec2 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -61,6 +61,21 @@ drm_add_fake_info_node(struct drm_minor *minor, return 0; } +static __always_inline void seq_print_param(struct seq_file *m, + const char *name, + const char *type, + const void *x) +{ + if (!__builtin_strcmp(type, "bool")) + seq_printf(m, "i915.%s=%s\n", name, yesno(*(const bool *)x)); + else if (!__builtin_strcmp(type, "int")) + seq_printf(m, "i915.%s=%d\n", name, *(const int *)x); + else if (!__builtin_strcmp(type, "unsigned int")) + seq_printf(m, "i915.%s=%u\n", name, *(const unsigned int *)x); + else + BUILD_BUG(); +} + static int i915_capabilities(struct seq_file *m, void *data) { struct drm_i915_private *dev_priv = node_to_i915(m->private); @@ -69,10 +84,17 @@ static int i915_capabilities(struct seq_file *m, void *data) seq_printf(m, "gen: %d\n", INTEL_GEN(dev_priv)); seq_printf(m, "platform: %s\n", intel_platform_name(info->platform)); seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev_priv)); + #define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x)) DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG); #undef PRINT_FLAG + kernel_param_lock(THIS_MODULE); +#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915.x); + I915_PARAMS_FOR_EACH(PRINT_PARAM); +#undef PRINT_PARAM + kernel_param_unlock(THIS_MODULE); + return 0; } -- 2.20.1