| Message ID | 20241103110230.11035-1-jsg@jsg.id.au (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/i915/pxp: fix non-optimised !CONFIG_DRM_I915_PXP build | expand |
On Sun, 03 Nov 2024, Jonathan Gray <jsg@jsg.id.au> wrote: > intel_pxp_gsccs_is_ready_for_sessions() is gated by CONFIG_DRM_I915_PXP > but called from intel_pxp.c which isn't. Provide a fallback inline > function to fix the non-optimised build. What does this have to do with optimization? Isn't the build just plain broken for PXP=n? BR, Jani. > > Fixes: 99afb7cc8c44 ("drm/i915/pxp: Add ARB session creation and cleanup") > Signed-off-by: Jonathan Gray <jsg@jsg.id.au> > --- > drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > index 9aae779c4da3..b93488e99685 100644 > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > @@ -16,26 +16,30 @@ struct intel_pxp; > #define GSC_PENDING_RETRY_PAUSE_MS 50 > #define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_HECI_REPLY_LATENCY_MS + \ > (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)) > > #ifdef CONFIG_DRM_I915_PXP > void intel_pxp_gsccs_fini(struct intel_pxp *pxp); > int intel_pxp_gsccs_init(struct intel_pxp *pxp); > +bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); > > int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, int arb_session_id); > void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id); > > #else > static inline void intel_pxp_gsccs_fini(struct intel_pxp *pxp) > { > } > > static inline int intel_pxp_gsccs_init(struct intel_pxp *pxp) > { > return 0; > } > > -#endif > +static inline bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp) > +{ > + return false; > +} > > -bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); > +#endif > > #endif /*__INTEL_PXP_GSCCS_H__ */
On Mon, Nov 04, 2024 at 12:16:44PM +0200, Jani Nikula wrote: > On Sun, 03 Nov 2024, Jonathan Gray <jsg@jsg.id.au> wrote: > > intel_pxp_gsccs_is_ready_for_sessions() is gated by CONFIG_DRM_I915_PXP > > but called from intel_pxp.c which isn't. Provide a fallback inline > > function to fix the non-optimised build. > > What does this have to do with optimization? Isn't the build just plain > broken for PXP=n? With clang/lld 16 on OpenBSD with PXP=n, intel_pxp.o with -O0 has an undefined reference to intel_pxp_gsccs_is_ready_for_sessions, with -O1 and -O2 it doesn't and the kernel links. > > BR, > Jani. > > > > > > Fixes: 99afb7cc8c44 ("drm/i915/pxp: Add ARB session creation and cleanup") > > Signed-off-by: Jonathan Gray <jsg@jsg.id.au> > > --- > > drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 8 ++++++-- > > 1 file changed, 6 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > > index 9aae779c4da3..b93488e99685 100644 > > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h > > @@ -16,26 +16,30 @@ struct intel_pxp; > > #define GSC_PENDING_RETRY_PAUSE_MS 50 > > #define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_HECI_REPLY_LATENCY_MS + \ > > (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)) > > > > #ifdef CONFIG_DRM_I915_PXP > > void intel_pxp_gsccs_fini(struct intel_pxp *pxp); > > int intel_pxp_gsccs_init(struct intel_pxp *pxp); > > +bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); > > > > int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, int arb_session_id); > > void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id); > > > > #else > > static inline void intel_pxp_gsccs_fini(struct intel_pxp *pxp) > > { > > } > > > > static inline int intel_pxp_gsccs_init(struct intel_pxp *pxp) > > { > > return 0; > > } > > > > -#endif > > +static inline bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp) > > +{ > > + return false; > > +} > > > > -bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); > > +#endif > > > > #endif /*__INTEL_PXP_GSCCS_H__ */ > > -- > Jani Nikula, Intel >
On Mon, 04 Nov 2024, Jonathan Gray <jsg@jsg.id.au> wrote: > On Mon, Nov 04, 2024 at 12:16:44PM +0200, Jani Nikula wrote: >> On Sun, 03 Nov 2024, Jonathan Gray <jsg@jsg.id.au> wrote: >> > intel_pxp_gsccs_is_ready_for_sessions() is gated by CONFIG_DRM_I915_PXP >> > but called from intel_pxp.c which isn't. Provide a fallback inline >> > function to fix the non-optimised build. >> >> What does this have to do with optimization? Isn't the build just plain >> broken for PXP=n? > > With clang/lld 16 on OpenBSD with PXP=n, intel_pxp.o with -O0 has an > undefined reference to intel_pxp_gsccs_is_ready_for_sessions, > with -O1 and -O2 it doesn't and the kernel links. Right, so it can determine intel_pxp_get_readiness_status() is basically a nop for PXP=n. BR, Jani. > >> >> BR, >> Jani. >> >> >> > >> > Fixes: 99afb7cc8c44 ("drm/i915/pxp: Add ARB session creation and cleanup") >> > Signed-off-by: Jonathan Gray <jsg@jsg.id.au> >> > --- >> > drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 8 ++++++-- >> > 1 file changed, 6 insertions(+), 2 deletions(-) >> > >> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h >> > index 9aae779c4da3..b93488e99685 100644 >> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h >> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h >> > @@ -16,26 +16,30 @@ struct intel_pxp; >> > #define GSC_PENDING_RETRY_PAUSE_MS 50 >> > #define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_HECI_REPLY_LATENCY_MS + \ >> > (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)) >> > >> > #ifdef CONFIG_DRM_I915_PXP >> > void intel_pxp_gsccs_fini(struct intel_pxp *pxp); >> > int intel_pxp_gsccs_init(struct intel_pxp *pxp); >> > +bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); >> > >> > int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, int arb_session_id); >> > void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id); >> > >> > #else >> > static inline void intel_pxp_gsccs_fini(struct intel_pxp *pxp) >> > { >> > } >> > >> > static inline int intel_pxp_gsccs_init(struct intel_pxp *pxp) >> > { >> > return 0; >> > } >> > >> > -#endif >> > +static inline bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp) >> > +{ >> > + return false; >> > +} >> > >> > -bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); >> > +#endif >> > >> > #endif /*__INTEL_PXP_GSCCS_H__ */ >> >> -- >> Jani Nikula, Intel >>
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h index 9aae779c4da3..b93488e99685 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h @@ -16,26 +16,30 @@ struct intel_pxp; #define GSC_PENDING_RETRY_PAUSE_MS 50 #define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_HECI_REPLY_LATENCY_MS + \ (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)) #ifdef CONFIG_DRM_I915_PXP void intel_pxp_gsccs_fini(struct intel_pxp *pxp); int intel_pxp_gsccs_init(struct intel_pxp *pxp); +bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, int arb_session_id); void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id); #else static inline void intel_pxp_gsccs_fini(struct intel_pxp *pxp) { } static inline int intel_pxp_gsccs_init(struct intel_pxp *pxp) { return 0; } -#endif +static inline bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp) +{ + return false; +} -bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp); +#endif #endif /*__INTEL_PXP_GSCCS_H__ */
intel_pxp_gsccs_is_ready_for_sessions() is gated by CONFIG_DRM_I915_PXP but called from intel_pxp.c which isn't. Provide a fallback inline function to fix the non-optimised build. Fixes: 99afb7cc8c44 ("drm/i915/pxp: Add ARB session creation and cleanup") Signed-off-by: Jonathan Gray <jsg@jsg.id.au> --- drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)