diff options
| author | Imre Deak <imre.deak@intel.com> | 2022-11-14 14:22:44 +0200 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2022-11-18 17:27:53 +0200 |
| commit | 7ed310025e75826f74f6b3587047118e7176b409 (patch) | |
| tree | 0cb4156340f92c0c3217bbab032d91feb4575740 /drivers/gpu/drm/i915 | |
| parent | 10b85f0e1d922210ae857afed6d012ec32c4b6cb (diff) | |
| download | linux-7ed310025e75826f74f6b3587047118e7176b409.tar.bz2 | |
drm/i915: Preallocate the debug power domain wakerefs array
Since the current size of intel_display_power_domain_set struct is
close to 1kB, it's better to use preallocated memory for it. The only
user of the intel_display_power_get/put_in_set() allocating the struct
on stack is hsw_get_pipe_config(), so we can avoid potential stack
overallocations by moving the struct here to the preallocated
intel_crtc struct (hsw_get_pipe_config() is non-reentrant wrt. each
CRTC).
This patch replaces
https://lore.kernel.org/intel-gfx/20221107170917.3566758-5-imre.deak@intel.com/T/#md3f6cdf17fcd
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114122251.21327-3-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_types.h | 1 |
2 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 126f021dd7bd..b3e23708d194 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -4051,20 +4051,19 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc, struct intel_crtc_state *pipe_config) { struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_display_power_domain_set power_domain_set = { }; bool active; u32 tmp; - if (!intel_display_power_get_in_set_if_enabled(dev_priv, &power_domain_set, + if (!intel_display_power_get_in_set_if_enabled(dev_priv, &crtc->hw_readout_power_domains, POWER_DOMAIN_PIPE(crtc->pipe))) return false; pipe_config->shared_dpll = NULL; - active = hsw_get_transcoder_state(crtc, pipe_config, &power_domain_set); + active = hsw_get_transcoder_state(crtc, pipe_config, &crtc->hw_readout_power_domains); if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) && - bxt_get_dsi_transcoder_state(crtc, pipe_config, &power_domain_set)) { + bxt_get_dsi_transcoder_state(crtc, pipe_config, &crtc->hw_readout_power_domains)) { drm_WARN_ON(&dev_priv->drm, active); active = true; } @@ -4123,7 +4122,7 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc, pipe_config->ips_linetime = REG_FIELD_GET(HSW_IPS_LINETIME_MASK, tmp); - if (intel_display_power_get_in_set_if_enabled(dev_priv, &power_domain_set, + if (intel_display_power_get_in_set_if_enabled(dev_priv, &crtc->hw_readout_power_domains, POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe))) { if (DISPLAY_VER(dev_priv) >= 9) skl_get_pfit_config(pipe_config); @@ -4154,7 +4153,7 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc, } out: - intel_display_power_put_all_in_set(dev_priv, &power_domain_set); + intel_display_power_put_all_in_set(dev_priv, &crtc->hw_readout_power_domains); return active; } diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 8da87cbb172b..f07395065a69 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1375,6 +1375,7 @@ struct intel_crtc { u16 vmax_vblank_start; struct intel_display_power_domain_set enabled_power_domains; + struct intel_display_power_domain_set hw_readout_power_domains; struct intel_overlay *overlay; struct intel_crtc_state *config; |