[RFC 1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[RFC 1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[Michal Wajdeczko]

We should not add trailing ; after each member allow other
than statements-style uses of this helper macro.
While here s/func/param for clarity.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/i915_params.h | 84 +++++++++++++++++++-------------------
 1 file changed, 42 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index a2cbb47..0116bb9 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -27,50 +27,50 @@
 
 #include <linux/cache.h> /* for __read_mostly */
 
-#define I915_PARAMS_FOR_EACH(func) \
-	func(char *, vbt_firmware); \
-	func(int, modeset); \
-	func(int, panel_ignore_lid); \
-	func(int, semaphores); \
-	func(int, lvds_channel_mode); \
-	func(int, panel_use_ssc); \
-	func(int, vbt_sdvo_panel_type); \
-	func(int, enable_rc6); \
-	func(int, enable_dc); \
-	func(int, enable_fbc); \
-	func(int, enable_ppgtt); \
-	func(int, enable_execlists); \
-	func(int, enable_psr); \
-	func(int, disable_power_well); \
-	func(int, enable_ips); \
-	func(int, invert_brightness); \
-	func(int, enable_guc_loading); \
-	func(int, enable_guc_submission); \
-	func(int, guc_log_level); \
-	func(char *, guc_firmware_path); \
-	func(char *, huc_firmware_path); \
-	func(int, use_mmio_flip); \
-	func(int, mmio_debug); \
-	func(int, edp_vswing); \
-	func(int, reset); \
-	func(unsigned int, inject_load_failure); \
+#define I915_PARAMS_FOR_EACH(param) \
+	param(char *, vbt_firmware) \
+	param(int, modeset) \
+	param(int, panel_ignore_lid) \
+	param(int, semaphores) \
+	param(int, lvds_channel_mode) \
+	param(int, panel_use_ssc) \
+	param(int, vbt_sdvo_panel_type) \
+	param(int, enable_rc6) \
+	param(int, enable_dc) \
+	param(int, enable_fbc) \
+	param(int, enable_ppgtt) \
+	param(int, enable_execlists) \
+	param(int, enable_psr) \
+	param(int, disable_power_well) \
+	param(int, enable_ips) \
+	param(int, invert_brightness) \
+	param(int, enable_guc_loading) \
+	param(int, enable_guc_submission) \
+	param(int, guc_log_level) \
+	param(char *, guc_firmware_path) \
+	param(char *, huc_firmware_path) \
+	param(int, use_mmio_flip) \
+	param(int, mmio_debug) \
+	param(int, edp_vswing) \
+	param(int, reset) \
+	param(unsigned int, inject_load_failure) \
 	/* leave bools at the end to not create holes */ \
-	func(bool, alpha_support); \
-	func(bool, enable_cmd_parser); \
-	func(bool, enable_hangcheck); \
-	func(bool, fastboot); \
-	func(bool, prefault_disable); \
-	func(bool, load_detect_test); \
-	func(bool, force_reset_modeset_test); \
-	func(bool, error_capture); \
-	func(bool, disable_display); \
-	func(bool, verbose_state_checks); \
-	func(bool, nuclear_pageflip); \
-	func(bool, enable_dp_mst); \
-	func(bool, enable_dpcd_backlight); \
-	func(bool, enable_gvt)
+	param(bool, alpha_support) \
+	param(bool, enable_cmd_parser) \
+	param(bool, enable_hangcheck) \
+	param(bool, fastboot) \
+	param(bool, prefault_disable) \
+	param(bool, load_detect_test) \
+	param(bool, force_reset_modeset_test) \
+	param(bool, error_capture) \
+	param(bool, disable_display) \
+	param(bool, verbose_state_checks) \
+	param(bool, nuclear_pageflip) \
+	param(bool, enable_dp_mst) \
+	param(bool, enable_dpcd_backlight) \
+	param(bool, enable_gvt)
 
-#define MEMBER(T, member) T member
+#define MEMBER(T, member) T member;
 struct i915_params {
 	I915_PARAMS_FOR_EACH(MEMBER);
 };
-- 
2.7.4

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[RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Michal Wajdeczko]

By combining default value into helper macro we can initialize
modparams struct in the same automatic way as it was declared.
This will initialize members in the same order as declared
and additionally will disallow declaring new member without
proper default value for it.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c   |  2 +-
 drivers/gpu/drm/i915/i915_gpu_error.c |  6 +--
 drivers/gpu/drm/i915/i915_params.c    | 42 ++----------------
 drivers/gpu/drm/i915/i915_params.h    | 82 +++++++++++++++++------------------
 4 files changed, 48 insertions(+), 84 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 13fc259..29c2299 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -67,7 +67,7 @@ static int i915_capabilities(struct seq_file *m, void *data)
 #undef PRINT_FLAG
 
 	kernel_param_lock(THIS_MODULE);
-#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915_modparams.x);
+#define PRINT_PARAM(T, x, ...) seq_print_param(m, #x, #T, &i915_modparams.x);
 	I915_PARAMS_FOR_EACH(PRINT_PARAM);
 #undef PRINT_PARAM
 	kernel_param_unlock(THIS_MODULE);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index c7aaf62..c76b036 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -567,7 +567,7 @@ static __always_inline void err_print_param(struct drm_i915_error_state_buf *m,
 static void err_print_params(struct drm_i915_error_state_buf *m,
 			     const struct i915_params *p)
 {
-#define PRINT(T, x) err_print_param(m, #x, #T, &p->x);
+#define PRINT(T, x, ...) err_print_param(m, #x, #T, &p->x);
 	I915_PARAMS_FOR_EACH(PRINT);
 #undef PRINT
 }
@@ -861,7 +861,7 @@ void __i915_gpu_state_free(struct kref *error_ref)
 	kfree(error->overlay);
 	kfree(error->display);
 
-#define FREE(T, x) free_param(#T, &error->params.x);
+#define FREE(T, x, ...) free_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(FREE);
 #undef FREE
 
@@ -1697,7 +1697,7 @@ static int capture(void *data)
 					   error->i915->gt.last_init_time));
 
 	error->params = i915_modparams;
-#define DUP(T, x) dup_param(#T, &error->params.x);
+#define DUP(T, x, ...) dup_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(DUP);
 #undef DUP
 
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index ec65341..46eab92 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -33,45 +33,9 @@
 	MODULE_PARM_DESC(name, desc)
 
 struct i915_params i915_modparams __read_mostly = {
-	.modeset = -1,
-	.panel_ignore_lid = 1,
-	.semaphores = -1,
-	.lvds_channel_mode = 0,
-	.panel_use_ssc = -1,
-	.vbt_sdvo_panel_type = -1,
-	.enable_rc6 = -1,
-	.enable_dc = -1,
-	.enable_fbc = -1,
-	.enable_execlists = -1,
-	.enable_hangcheck = true,
-	.enable_ppgtt = -1,
-	.enable_psr = -1,
-	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
-	.disable_power_well = -1,
-	.enable_ips = 1,
-	.fastboot = 0,
-	.prefault_disable = 0,
-	.load_detect_test = 0,
-	.force_reset_modeset_test = 0,
-	.reset = 2,
-	.error_capture = true,
-	.invert_brightness = 0,
-	.disable_display = 0,
-	.enable_cmd_parser = true,
-	.use_mmio_flip = 0,
-	.mmio_debug = 0,
-	.verbose_state_checks = 1,
-	.nuclear_pageflip = 0,
-	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
-	.guc_log_level = -1,
-	.guc_firmware_path = NULL,
-	.huc_firmware_path = NULL,
-	.enable_dp_mst = true,
-	.inject_load_failure = 0,
-	.enable_dpcd_backlight = false,
-	.enable_gvt = false,
+#define MEMBER(T, member, value) .member = value,
+	I915_PARAMS_FOR_EACH(MEMBER)
+#undef MEMBER
 };
 
 i915_param_named(modeset, int, 0400,
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 0116bb9..da59939 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -28,49 +28,49 @@
 #include <linux/cache.h> /* for __read_mostly */
 
 #define I915_PARAMS_FOR_EACH(param) \
-	param(char *, vbt_firmware) \
-	param(int, modeset) \
-	param(int, panel_ignore_lid) \
-	param(int, semaphores) \
-	param(int, lvds_channel_mode) \
-	param(int, panel_use_ssc) \
-	param(int, vbt_sdvo_panel_type) \
-	param(int, enable_rc6) \
-	param(int, enable_dc) \
-	param(int, enable_fbc) \
-	param(int, enable_ppgtt) \
-	param(int, enable_execlists) \
-	param(int, enable_psr) \
-	param(int, disable_power_well) \
-	param(int, enable_ips) \
-	param(int, invert_brightness) \
-	param(int, enable_guc_loading) \
-	param(int, enable_guc_submission) \
-	param(int, guc_log_level) \
-	param(char *, guc_firmware_path) \
-	param(char *, huc_firmware_path) \
-	param(int, use_mmio_flip) \
-	param(int, mmio_debug) \
-	param(int, edp_vswing) \
-	param(int, reset) \
-	param(unsigned int, inject_load_failure) \
+	param(char *, vbt_firmware, NULL) \
+	param(int, modeset, -1) \
+	param(int, panel_ignore_lid, 1) \
+	param(int, semaphores, -1) \
+	param(int, lvds_channel_mode, 0) \
+	param(int, panel_use_ssc, -1) \
+	param(int, vbt_sdvo_panel_type, -1) \
+	param(int, enable_rc6, -1) \
+	param(int, enable_dc, -1) \
+	param(int, enable_fbc, -1) \
+	param(int, enable_ppgtt, -1) \
+	param(int, enable_execlists, -1) \
+	param(int, enable_psr, -1) \
+	param(int, disable_power_well, -1) \
+	param(int, enable_ips, 1) \
+	param(int, invert_brightness, 0) \
+	param(int, enable_guc_loading, 0) \
+	param(int, enable_guc_submission, 0) \
+	param(int, guc_log_level, -1) \
+	param(char *, guc_firmware_path, NULL) \
+	param(char *, huc_firmware_path, NULL) \
+	param(int, use_mmio_flip, 0) \
+	param(int, mmio_debug, 0) \
+	param(int, edp_vswing, 0) \
+	param(int, reset, 2) \
+	param(unsigned int, inject_load_failure, 0) \
 	/* leave bools at the end to not create holes */ \
-	param(bool, alpha_support) \
-	param(bool, enable_cmd_parser) \
-	param(bool, enable_hangcheck) \
-	param(bool, fastboot) \
-	param(bool, prefault_disable) \
-	param(bool, load_detect_test) \
-	param(bool, force_reset_modeset_test) \
-	param(bool, error_capture) \
-	param(bool, disable_display) \
-	param(bool, verbose_state_checks) \
-	param(bool, nuclear_pageflip) \
-	param(bool, enable_dp_mst) \
-	param(bool, enable_dpcd_backlight) \
-	param(bool, enable_gvt)
+	param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
+	param(bool, enable_cmd_parser, true) \
+	param(bool, enable_hangcheck, true) \
+	param(bool, fastboot, 0) \
+	param(bool, prefault_disable, 0) \
+	param(bool, load_detect_test, 0) \
+	param(bool, force_reset_modeset_test, 0) \
+	param(bool, error_capture, true) \
+	param(bool, disable_display, 0) \
+	param(bool, verbose_state_checks, 1) \
+	param(bool, nuclear_pageflip, 0) \
+	param(bool, enable_dp_mst, true) \
+	param(bool, enable_dpcd_backlight, false) \
+	param(bool, enable_gvt, false)
 
-#define MEMBER(T, member) T member;
+#define MEMBER(T, member, ...) T member;
 struct i915_params {
 	I915_PARAMS_FOR_EACH(MEMBER);
 };
-- 
2.7.4

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[RFC 3/3] drm/i915: Fix default values of some modparams

[Michal Wajdeczko]

Members should be initialized with values of matching types.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_params.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index da59939..4f3f8d6 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -58,14 +58,14 @@
 	param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
 	param(bool, enable_cmd_parser, true) \
 	param(bool, enable_hangcheck, true) \
-	param(bool, fastboot, 0) \
-	param(bool, prefault_disable, 0) \
-	param(bool, load_detect_test, 0) \
-	param(bool, force_reset_modeset_test, 0) \
+	param(bool, fastboot, false) \
+	param(bool, prefault_disable, false) \
+	param(bool, load_detect_test, false) \
+	param(bool, force_reset_modeset_test, false) \
 	param(bool, error_capture, true) \
-	param(bool, disable_display, 0) \
-	param(bool, verbose_state_checks, 1) \
-	param(bool, nuclear_pageflip, 0) \
+	param(bool, disable_display, false) \
+	param(bool, verbose_state_checks, true) \
+	param(bool, nuclear_pageflip, false) \
 	param(bool, enable_dp_mst, true) \
 	param(bool, enable_dpcd_backlight, false) \
 	param(bool, enable_gvt, false)
-- 
2.7.4

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✓ Fi.CI.BAT: success for series starting with [RFC,1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[Patchwork]

== Series Details ==

Series: series starting with [RFC,1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible
URL   : https://patchwork.freedesktop.org/series/30768/
State : success

== Summary ==

Series 30768v1 series starting with [RFC,1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible
https://patchwork.freedesktop.org/api/1.0/series/30768/revisions/1/mbox/

Test chamelium:
        Subgroup dp-edid-read:
                pass       -> FAIL       (fi-kbl-7500u) fdo#102672
Test gem_exec_suspend:
        Subgroup basic-s3:
                pass       -> INCOMPLETE (fi-kbl-r) fdo#102850
Test kms_cursor_legacy:
        Subgroup basic-busy-flip-before-cursor-legacy:
                pass       -> FAIL       (fi-snb-2600) fdo#100215
Test drv_module_reload:
        Subgroup basic-no-display:
                dmesg-warn -> PASS       (fi-glk-1) fdo#102777

fdo#102672 https://bugs.freedesktop.org/show_bug.cgi?id=102672
fdo#102850 https://bugs.freedesktop.org/show_bug.cgi?id=102850
fdo#100215 https://bugs.freedesktop.org/show_bug.cgi?id=100215
fdo#102777 https://bugs.freedesktop.org/show_bug.cgi?id=102777

fi-bdw-5557u     total:289  pass:268  dwarn:0   dfail:0   fail:0   skip:21  time:441s
fi-bdw-gvtdvm    total:289  pass:265  dwarn:0   dfail:0   fail:0   skip:24  time:467s
fi-blb-e6850     total:289  pass:224  dwarn:1   dfail:0   fail:0   skip:64  time:414s
fi-bsw-n3050     total:289  pass:243  dwarn:0   dfail:0   fail:0   skip:46  time:510s
fi-bwr-2160      total:289  pass:184  dwarn:0   dfail:0   fail:0   skip:105 time:277s
fi-bxt-j4205     total:289  pass:260  dwarn:0   dfail:0   fail:0   skip:29  time:504s
fi-byt-j1900     total:289  pass:254  dwarn:1   dfail:0   fail:0   skip:34  time:490s
fi-byt-n2820     total:289  pass:250  dwarn:1   dfail:0   fail:0   skip:38  time:486s
fi-cfl-s         total:289  pass:223  dwarn:34  dfail:0   fail:0   skip:32  time:539s
fi-elk-e7500     total:289  pass:230  dwarn:0   dfail:0   fail:0   skip:59  time:413s
fi-glk-1         total:289  pass:260  dwarn:0   dfail:0   fail:0   skip:29  time:565s
fi-hsw-4770      total:289  pass:263  dwarn:0   dfail:0   fail:0   skip:26  time:423s
fi-hsw-4770r     total:289  pass:263  dwarn:0   dfail:0   fail:0   skip:26  time:404s
fi-ilk-650       total:289  pass:229  dwarn:0   dfail:0   fail:0   skip:60  time:432s
fi-ivb-3520m     total:289  pass:261  dwarn:0   dfail:0   fail:0   skip:28  time:485s
fi-ivb-3770      total:289  pass:261  dwarn:0   dfail:0   fail:0   skip:28  time:462s
fi-kbl-7500u     total:289  pass:263  dwarn:1   dfail:0   fail:1   skip:24  time:465s
fi-kbl-7560u     total:289  pass:270  dwarn:0   dfail:0   fail:0   skip:19  time:581s
fi-kbl-r         total:118  pass:97   dwarn:0   dfail:0   fail:0   skip:20 
fi-pnv-d510      total:289  pass:223  dwarn:1   dfail:0   fail:0   skip:65  time:537s
fi-skl-6260u     total:289  pass:269  dwarn:0   dfail:0   fail:0   skip:20  time:452s
fi-skl-6700k     total:289  pass:265  dwarn:0   dfail:0   fail:0   skip:24  time:749s
fi-skl-6770hq    total:289  pass:269  dwarn:0   dfail:0   fail:0   skip:20  time:491s
fi-skl-gvtdvm    total:289  pass:266  dwarn:0   dfail:0   fail:0   skip:23  time:468s
fi-snb-2520m     total:289  pass:251  dwarn:0   dfail:0   fail:0   skip:38  time:567s
fi-snb-2600      total:289  pass:248  dwarn:0   dfail:0   fail:2   skip:39  time:417s

e0e308721fd283e1c5777657a5941f178f0d49e6 drm-tip: 2017y-09m-22d-13h-31m-38s UTC integration manifest
60390eec06dc drm/i915: Fix default values of some modparams
2505ec2c4681 drm/i915: Extend I915_PARAMS_FOR_EACH with default member value
b16f668e9734 drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_5794/
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Re: [RFC 1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[Chris Wilson]

Quoting Michal Wajdeczko (2017-09-22 15:27:24)
> We should not add trailing ; after each member allow other
> than statements-style uses of this helper macro.
> While here s/func/param for clarity.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>

Ok, looks like the trailing ; already snuck into the other users.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
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Re: [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Chris Wilson]

Quoting Michal Wajdeczko (2017-09-22 15:27:25)
> By combining default value into helper macro we can initialize
> modparams struct in the same automatic way as it was declared.
> This will initialize members in the same order as declared
> and additionally will disallow declaring new member without
> proper default value for it.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Overall, I think this is a positive change. I'm not completely happy
that the param() macro is more readable than the struct assignment, but
that is offset by the reduction in duplication.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
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Re: [RFC 3/3] drm/i915: Fix default values of some modparams

[Chris Wilson]

Quoting Michal Wajdeczko (2017-09-22 15:27:26)
> Members should be initialized with values of matching types.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

Perhaps typecheck(T, value) could sneak in somewhere. Add a sanitycheck
to i915_params.c?
-Chris
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Re: [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Jani Nikula]

On Fri, 22 Sep 2017, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> Quoting Michal Wajdeczko (2017-09-22 15:27:25)
>> By combining default value into helper macro we can initialize
>> modparams struct in the same automatic way as it was declared.
>> This will initialize members in the same order as declared
>> and additionally will disallow declaring new member without
>> proper default value for it.
>> 
>> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
>> Cc: Chris Wilson <chris@chris-wilson.co.uk>
>> Cc: Jani Nikula <jani.nikula@intel.com>
>> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
>
> Overall, I think this is a positive change. I'm not completely happy
> that the param() macro is more readable than the struct assignment, but
> that is offset by the reduction in duplication.

I'm also not completely happy that the default values get moved away
from the param descriptions. (Hmm, what next, putting the permissions
and descriptions in I915_PARAMS_FOR_EACH too?! :o)

There's also the benefit of being able to highlight the changed values
and displaying the defaults in debugfs if desired.

On the series,

Acked-by: Jani Nikula <jani.nikula@intel.com>


-- 
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✗ Fi.CI.IGT: failure for series starting with [RFC,1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[Patchwork]

== Series Details ==

Series: series starting with [RFC,1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible
URL   : https://patchwork.freedesktop.org/series/30768/
State : failure

== Summary ==

Test kms_setmode:
        Subgroup basic:
                pass       -> FAIL       (shard-hsw) fdo#99912
Test perf:
        Subgroup blocking:
                pass       -> FAIL       (shard-hsw) fdo#102252 +1
Test kms_frontbuffer_tracking:
        Subgroup fbc-1p-primscrn-pri-indfb-draw-blt:
                skip       -> PASS       (shard-hsw)
Test kms_atomic_transition:
        Subgroup plane-all-transition-nonblocking-fencing:
                pass       -> FAIL       (shard-hsw)
Test kms_draw_crc:
        Subgroup draw-method-xrgb8888-mmap-wc-xtiled:
                pass       -> SKIP       (shard-hsw)

fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
fdo#102252 https://bugs.freedesktop.org/show_bug.cgi?id=102252

shard-hsw        total:2429 pass:1330 dwarn:1   dfail:0   fail:14  skip:1084 time:9861s

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_5794/shards.html
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Re: [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Joonas Lahtinen]

On Fri, 2017-09-22 at 22:05 +0300, Jani Nikula wrote:
> On Fri, 22 Sep 2017, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> > Quoting Michal Wajdeczko (2017-09-22 15:27:25)
> > > By combining default value into helper macro we can initialize
> > > modparams struct in the same automatic way as it was declared.
> > > This will initialize members in the same order as declared
> > > and additionally will disallow declaring new member without
> > > proper default value for it.
> > > 
> > > Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> > > Cc: Chris Wilson <chris@chris-wilson.co.uk>
> > > Cc: Jani Nikula <jani.nikula@intel.com>
> > > Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> > 
> > Overall, I think this is a positive change. I'm not completely happy
> > that the param() macro is more readable than the struct assignment, but
> > that is offset by the reduction in duplication.
> 
> I'm also not completely happy that the default values get moved away
> from the param descriptions. (Hmm, what next, putting the permissions
> and descriptions in I915_PARAMS_FOR_EACH too?! :o)
> 
> There's also the benefit of being able to highlight the changed values
> and displaying the defaults in debugfs if desired.

Yes, I think this would be useful going forward.

Regards, Joonas
-- 
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Open Source Technology Center
Intel Corporation
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Re: [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Joonas Lahtinen]

On Fri, 2017-09-22 at 14:27 +0000, Michal Wajdeczko wrote:
> By combining default value into helper macro we can initialize
> modparams struct in the same automatic way as it was declared.
> This will initialize members in the same order as declared
> and additionally will disallow declaring new member without
> proper default value for it.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Ha, seems like you beat me to it :) (https://lists.freedesktop.org/arch
ives/intel-gfx/2017-September/139268.html)

<SNIP>

> @@ -33,45 +33,9 @@
>  	MODULE_PARM_DESC(name, desc)
>  
>  struct i915_params i915_modparams __read_mostly = {
> -	.modeset = -1,
> -	.panel_ignore_lid = 1,
> -	.semaphores = -1,
> -	.lvds_channel_mode = 0,
> -	.panel_use_ssc = -1,
> -	.vbt_sdvo_panel_type = -1,
> -	.enable_rc6 = -1,
> -	.enable_dc = -1,
> -	.enable_fbc = -1,
> -	.enable_execlists = -1,
> -	.enable_hangcheck = true,
> -	.enable_ppgtt = -1,
> -	.enable_psr = -1,
> -	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
> -	.disable_power_well = -1,
> -	.enable_ips = 1,
> -	.fastboot = 0,
> -	.prefault_disable = 0,
> -	.load_detect_test = 0,
> -	.force_reset_modeset_test = 0,
> -	.reset = 2,
> -	.error_capture = true,
> -	.invert_brightness = 0,
> -	.disable_display = 0,
> -	.enable_cmd_parser = true,
> -	.use_mmio_flip = 0,
> -	.mmio_debug = 0,
> -	.verbose_state_checks = 1,
> -	.nuclear_pageflip = 0,
> -	.edp_vswing = 0,
> -	.enable_guc_loading = 0,
> -	.enable_guc_submission = 0,
> -	.guc_log_level = -1,
> -	.guc_firmware_path = NULL,
> -	.huc_firmware_path = NULL,
> -	.enable_dp_mst = true,
> -	.inject_load_failure = 0,
> -	.enable_dpcd_backlight = false,
> -	.enable_gvt = false,
> +#define MEMBER(T, member, value) .member = value,

Should be .member = (value),

With that;

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Regards, Joonas
-- 
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Open Source Technology Center
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Re: [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Michal Wajdeczko]

On Fri, 22 Sep 2017 21:05:11 +0200, Jani Nikula <jani.nikula@intel.com>  
wrote:

> On Fri, 22 Sep 2017, Chris Wilson <chris@chris-wilson.co.uk> wrote:
>> Quoting Michal Wajdeczko (2017-09-22 15:27:25)
>>> By combining default value into helper macro we can initialize
>>> modparams struct in the same automatic way as it was declared.
>>> This will initialize members in the same order as declared
>>> and additionally will disallow declaring new member without
>>> proper default value for it.
>>>
>>> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
>>> Cc: Chris Wilson <chris@chris-wilson.co.uk>
>>> Cc: Jani Nikula <jani.nikula@intel.com>
>>> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
>>
>> Overall, I think this is a positive change. I'm not completely happy
>> that the param() macro is more readable than the struct assignment, but
>> that is offset by the reduction in duplication.
>
> I'm also not completely happy that the default values get moved away
> from the param descriptions. (Hmm, what next, putting the permissions
> and descriptions in I915_PARAMS_FOR_EACH too?! :o)
>

In fact, I was already trying that ;)
https://patchwork.freedesktop.org/patch/162037/

> There's also the benefit of being able to highlight the changed values
> and displaying the defaults in debugfs if desired.

And such highlight was also there
https://patchwork.freedesktop.org/patch/162038/

Michal

>
> On the series,
>
> Acked-by: Jani Nikula <jani.nikula@intel.com>
>
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[PATCH v2 1/3] drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible

[Michal Wajdeczko]

We should not add trailing ; after each member allow other
than statements-style uses of this helper macro.
While here s/func/param for clarity.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_params.h | 84 +++++++++++++++++++-------------------
 1 file changed, 42 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index a2cbb47..0116bb9 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -27,50 +27,50 @@
 
 #include <linux/cache.h> /* for __read_mostly */
 
-#define I915_PARAMS_FOR_EACH(func) \
-	func(char *, vbt_firmware); \
-	func(int, modeset); \
-	func(int, panel_ignore_lid); \
-	func(int, semaphores); \
-	func(int, lvds_channel_mode); \
-	func(int, panel_use_ssc); \
-	func(int, vbt_sdvo_panel_type); \
-	func(int, enable_rc6); \
-	func(int, enable_dc); \
-	func(int, enable_fbc); \
-	func(int, enable_ppgtt); \
-	func(int, enable_execlists); \
-	func(int, enable_psr); \
-	func(int, disable_power_well); \
-	func(int, enable_ips); \
-	func(int, invert_brightness); \
-	func(int, enable_guc_loading); \
-	func(int, enable_guc_submission); \
-	func(int, guc_log_level); \
-	func(char *, guc_firmware_path); \
-	func(char *, huc_firmware_path); \
-	func(int, use_mmio_flip); \
-	func(int, mmio_debug); \
-	func(int, edp_vswing); \
-	func(int, reset); \
-	func(unsigned int, inject_load_failure); \
+#define I915_PARAMS_FOR_EACH(param) \
+	param(char *, vbt_firmware) \
+	param(int, modeset) \
+	param(int, panel_ignore_lid) \
+	param(int, semaphores) \
+	param(int, lvds_channel_mode) \
+	param(int, panel_use_ssc) \
+	param(int, vbt_sdvo_panel_type) \
+	param(int, enable_rc6) \
+	param(int, enable_dc) \
+	param(int, enable_fbc) \
+	param(int, enable_ppgtt) \
+	param(int, enable_execlists) \
+	param(int, enable_psr) \
+	param(int, disable_power_well) \
+	param(int, enable_ips) \
+	param(int, invert_brightness) \
+	param(int, enable_guc_loading) \
+	param(int, enable_guc_submission) \
+	param(int, guc_log_level) \
+	param(char *, guc_firmware_path) \
+	param(char *, huc_firmware_path) \
+	param(int, use_mmio_flip) \
+	param(int, mmio_debug) \
+	param(int, edp_vswing) \
+	param(int, reset) \
+	param(unsigned int, inject_load_failure) \
 	/* leave bools at the end to not create holes */ \
-	func(bool, alpha_support); \
-	func(bool, enable_cmd_parser); \
-	func(bool, enable_hangcheck); \
-	func(bool, fastboot); \
-	func(bool, prefault_disable); \
-	func(bool, load_detect_test); \
-	func(bool, force_reset_modeset_test); \
-	func(bool, error_capture); \
-	func(bool, disable_display); \
-	func(bool, verbose_state_checks); \
-	func(bool, nuclear_pageflip); \
-	func(bool, enable_dp_mst); \
-	func(bool, enable_dpcd_backlight); \
-	func(bool, enable_gvt)
+	param(bool, alpha_support) \
+	param(bool, enable_cmd_parser) \
+	param(bool, enable_hangcheck) \
+	param(bool, fastboot) \
+	param(bool, prefault_disable) \
+	param(bool, load_detect_test) \
+	param(bool, force_reset_modeset_test) \
+	param(bool, error_capture) \
+	param(bool, disable_display) \
+	param(bool, verbose_state_checks) \
+	param(bool, nuclear_pageflip) \
+	param(bool, enable_dp_mst) \
+	param(bool, enable_dpcd_backlight) \
+	param(bool, enable_gvt)
 
-#define MEMBER(T, member) T member
+#define MEMBER(T, member) T member;
 struct i915_params {
 	I915_PARAMS_FOR_EACH(MEMBER);
 };
-- 
2.7.4

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[PATCH v2 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Michal Wajdeczko]

By combining default value into helper macro we can initialize
modparams struct in the same automatic way as it was declared.
This will initialize members in the same order as declared
and additionally will disallow declaring new member without
proper default value for it.

v2: make MEMBER macro more robust (Joonas)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c   |  2 +-
 drivers/gpu/drm/i915/i915_gpu_error.c |  6 +--
 drivers/gpu/drm/i915/i915_params.c    | 42 ++----------------
 drivers/gpu/drm/i915/i915_params.h    | 82 +++++++++++++++++------------------
 4 files changed, 48 insertions(+), 84 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 847f8e8..b4a6ac6 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -67,7 +67,7 @@ static int i915_capabilities(struct seq_file *m, void *data)
 #undef PRINT_FLAG
 
 	kernel_param_lock(THIS_MODULE);
-#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915_modparams.x);
+#define PRINT_PARAM(T, x, ...) seq_print_param(m, #x, #T, &i915_modparams.x);
 	I915_PARAMS_FOR_EACH(PRINT_PARAM);
 #undef PRINT_PARAM
 	kernel_param_unlock(THIS_MODULE);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 12146d7..c14552a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -572,7 +572,7 @@ static __always_inline void err_print_param(struct drm_i915_error_state_buf *m,
 static void err_print_params(struct drm_i915_error_state_buf *m,
 			     const struct i915_params *p)
 {
-#define PRINT(T, x) err_print_param(m, #x, #T, &p->x);
+#define PRINT(T, x, ...) err_print_param(m, #x, #T, &p->x);
 	I915_PARAMS_FOR_EACH(PRINT);
 #undef PRINT
 }
@@ -866,7 +866,7 @@ void __i915_gpu_state_free(struct kref *error_ref)
 	kfree(error->overlay);
 	kfree(error->display);
 
-#define FREE(T, x) free_param(#T, &error->params.x);
+#define FREE(T, x, ...) free_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(FREE);
 #undef FREE
 
@@ -1704,7 +1704,7 @@ static int capture(void *data)
 					   error->i915->gt.last_init_time));
 
 	error->params = i915_modparams;
-#define DUP(T, x) dup_param(#T, &error->params.x);
+#define DUP(T, x, ...) dup_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(DUP);
 #undef DUP
 
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index ec65341..9dff323 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -33,45 +33,9 @@
 	MODULE_PARM_DESC(name, desc)
 
 struct i915_params i915_modparams __read_mostly = {
-	.modeset = -1,
-	.panel_ignore_lid = 1,
-	.semaphores = -1,
-	.lvds_channel_mode = 0,
-	.panel_use_ssc = -1,
-	.vbt_sdvo_panel_type = -1,
-	.enable_rc6 = -1,
-	.enable_dc = -1,
-	.enable_fbc = -1,
-	.enable_execlists = -1,
-	.enable_hangcheck = true,
-	.enable_ppgtt = -1,
-	.enable_psr = -1,
-	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
-	.disable_power_well = -1,
-	.enable_ips = 1,
-	.fastboot = 0,
-	.prefault_disable = 0,
-	.load_detect_test = 0,
-	.force_reset_modeset_test = 0,
-	.reset = 2,
-	.error_capture = true,
-	.invert_brightness = 0,
-	.disable_display = 0,
-	.enable_cmd_parser = true,
-	.use_mmio_flip = 0,
-	.mmio_debug = 0,
-	.verbose_state_checks = 1,
-	.nuclear_pageflip = 0,
-	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
-	.guc_log_level = -1,
-	.guc_firmware_path = NULL,
-	.huc_firmware_path = NULL,
-	.enable_dp_mst = true,
-	.inject_load_failure = 0,
-	.enable_dpcd_backlight = false,
-	.enable_gvt = false,
+#define MEMBER(T, member, value) .member = (value),
+	I915_PARAMS_FOR_EACH(MEMBER)
+#undef MEMBER
 };
 
 i915_param_named(modeset, int, 0400,
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 0116bb9..da59939 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -28,49 +28,49 @@
 #include <linux/cache.h> /* for __read_mostly */
 
 #define I915_PARAMS_FOR_EACH(param) \
-	param(char *, vbt_firmware) \
-	param(int, modeset) \
-	param(int, panel_ignore_lid) \
-	param(int, semaphores) \
-	param(int, lvds_channel_mode) \
-	param(int, panel_use_ssc) \
-	param(int, vbt_sdvo_panel_type) \
-	param(int, enable_rc6) \
-	param(int, enable_dc) \
-	param(int, enable_fbc) \
-	param(int, enable_ppgtt) \
-	param(int, enable_execlists) \
-	param(int, enable_psr) \
-	param(int, disable_power_well) \
-	param(int, enable_ips) \
-	param(int, invert_brightness) \
-	param(int, enable_guc_loading) \
-	param(int, enable_guc_submission) \
-	param(int, guc_log_level) \
-	param(char *, guc_firmware_path) \
-	param(char *, huc_firmware_path) \
-	param(int, use_mmio_flip) \
-	param(int, mmio_debug) \
-	param(int, edp_vswing) \
-	param(int, reset) \
-	param(unsigned int, inject_load_failure) \
+	param(char *, vbt_firmware, NULL) \
+	param(int, modeset, -1) \
+	param(int, panel_ignore_lid, 1) \
+	param(int, semaphores, -1) \
+	param(int, lvds_channel_mode, 0) \
+	param(int, panel_use_ssc, -1) \
+	param(int, vbt_sdvo_panel_type, -1) \
+	param(int, enable_rc6, -1) \
+	param(int, enable_dc, -1) \
+	param(int, enable_fbc, -1) \
+	param(int, enable_ppgtt, -1) \
+	param(int, enable_execlists, -1) \
+	param(int, enable_psr, -1) \
+	param(int, disable_power_well, -1) \
+	param(int, enable_ips, 1) \
+	param(int, invert_brightness, 0) \
+	param(int, enable_guc_loading, 0) \
+	param(int, enable_guc_submission, 0) \
+	param(int, guc_log_level, -1) \
+	param(char *, guc_firmware_path, NULL) \
+	param(char *, huc_firmware_path, NULL) \
+	param(int, use_mmio_flip, 0) \
+	param(int, mmio_debug, 0) \
+	param(int, edp_vswing, 0) \
+	param(int, reset, 2) \
+	param(unsigned int, inject_load_failure, 0) \
 	/* leave bools at the end to not create holes */ \
-	param(bool, alpha_support) \
-	param(bool, enable_cmd_parser) \
-	param(bool, enable_hangcheck) \
-	param(bool, fastboot) \
-	param(bool, prefault_disable) \
-	param(bool, load_detect_test) \
-	param(bool, force_reset_modeset_test) \
-	param(bool, error_capture) \
-	param(bool, disable_display) \
-	param(bool, verbose_state_checks) \
-	param(bool, nuclear_pageflip) \
-	param(bool, enable_dp_mst) \
-	param(bool, enable_dpcd_backlight) \
-	param(bool, enable_gvt)
+	param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
+	param(bool, enable_cmd_parser, true) \
+	param(bool, enable_hangcheck, true) \
+	param(bool, fastboot, 0) \
+	param(bool, prefault_disable, 0) \
+	param(bool, load_detect_test, 0) \
+	param(bool, force_reset_modeset_test, 0) \
+	param(bool, error_capture, true) \
+	param(bool, disable_display, 0) \
+	param(bool, verbose_state_checks, 1) \
+	param(bool, nuclear_pageflip, 0) \
+	param(bool, enable_dp_mst, true) \
+	param(bool, enable_dpcd_backlight, false) \
+	param(bool, enable_gvt, false)
 
-#define MEMBER(T, member) T member;
+#define MEMBER(T, member, ...) T member;
 struct i915_params {
 	I915_PARAMS_FOR_EACH(MEMBER);
 };
-- 
2.7.4

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[PATCH v2 3/3] drm/i915: Fix default values of some modparams

[Michal Wajdeczko]

Members should be initialized with values of matching types.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_params.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index da59939..4f3f8d6 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -58,14 +58,14 @@
 	param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
 	param(bool, enable_cmd_parser, true) \
 	param(bool, enable_hangcheck, true) \
-	param(bool, fastboot, 0) \
-	param(bool, prefault_disable, 0) \
-	param(bool, load_detect_test, 0) \
-	param(bool, force_reset_modeset_test, 0) \
+	param(bool, fastboot, false) \
+	param(bool, prefault_disable, false) \
+	param(bool, load_detect_test, false) \
+	param(bool, force_reset_modeset_test, false) \
 	param(bool, error_capture, true) \
-	param(bool, disable_display, 0) \
-	param(bool, verbose_state_checks, 1) \
-	param(bool, nuclear_pageflip, 0) \
+	param(bool, disable_display, false) \
+	param(bool, verbose_state_checks, true) \
+	param(bool, nuclear_pageflip, false) \
 	param(bool, enable_dp_mst, true) \
 	param(bool, enable_dpcd_backlight, false) \
 	param(bool, enable_gvt, false)
-- 
2.7.4

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✗ Fi.CI.BAT: failure for series starting with [v2,3/3] drm/i915: Fix default values of some modparams (rev4)

[Patchwork]

== Series Details ==

Series: series starting with [v2,3/3] drm/i915: Fix default values of some modparams (rev4)
URL   : https://patchwork.freedesktop.org/series/30768/
State : failure

== Summary ==

Series 30768 revision 4 was fully merged or fully failed: no git log

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Re: [PATCH v2 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Joonas Lahtinen]

On Mon, 2017-09-25 at 09:45 +0000, Michal Wajdeczko wrote:
> By combining default value into helper macro we can initialize
> modparams struct in the same automatic way as it was declared.
> This will initialize members in the same order as declared
> and additionally will disallow declaring new member without
> proper default value for it.
> 
> v2: make MEMBER macro more robust (Joonas)
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
> Acked-by: Jani Nikula <jani.nikula@intel.com>
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

<SNIP>

> +++ b/drivers/gpu/drm/i915/i915_params.c
> @@ -33,45 +33,9 @@
>  	MODULE_PARM_DESC(name, desc)
>  
>  struct i915_params i915_modparams __read_mostly = {
> -	.modeset = -1,
> -	.panel_ignore_lid = 1,
> -	.semaphores = -1,
> -	.lvds_channel_mode = 0,
> -	.panel_use_ssc = -1,
> -	.vbt_sdvo_panel_type = -1,
> -	.enable_rc6 = -1,
> -	.enable_dc = -1,
> -	.enable_fbc = -1,
> -	.enable_execlists = -1,
> -	.enable_hangcheck = true,
> -	.enable_ppgtt = -1,
> -	.enable_psr = -1,
> -	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
> -	.disable_power_well = -1,
> -	.enable_ips = 1,
> -	.fastboot = 0,
> -	.prefault_disable = 0,
> -	.load_detect_test = 0,
> -	.force_reset_modeset_test = 0,
> -	.reset = 2,
> -	.error_capture = true,
> -	.invert_brightness = 0,
> -	.disable_display = 0,
> -	.enable_cmd_parser = true,
> -	.use_mmio_flip = 0,
> -	.mmio_debug = 0,
> -	.verbose_state_checks = 1,
> -	.nuclear_pageflip = 0,
> -	.edp_vswing = 0,
> -	.enable_guc_loading = 0,
> -	.enable_guc_submission = 0,
> -	.guc_log_level = -1,
> -	.guc_firmware_path = NULL,
> -	.huc_firmware_path = NULL,
> -	.enable_dp_mst = true,
> -	.inject_load_failure = 0,
> -	.enable_dpcd_backlight = false,
> -	.enable_gvt = false,
> +#define MEMBER(T, member, value) .member = (value),
> +	I915_PARAMS_FOR_EACH(MEMBER)

To fix the problem that next patch is needed for;

	.member = typecheck(T, (value)) ? (value) : (value),

Assuming it won't mess up GCC code generation. Can be sent as an extra
patch on top when this gets in.

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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