| Message ID | 20240604215105.4057278-1-quic_abhinavk@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/msm/a6xx: use __always_unused to fix compiler warnings for gen7_* includes | expand |
On Tue, Jun 04, 2024 at 02:51:04PM -0700, Abhinav Kumar wrote: > GCC diagnostic pragma method throws below warnings in some of the versions > > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:16:9: warning: unknown option after '#pragma GCC diagnostic' kind [-Wpragmas] > #pragma GCC diagnostic ignored "-Wunused-const-variable" > ^ > In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:18:0: > drivers/gpu/drm/msm/adreno/adreno_gen7_0_0_snapshot.h:924:19: warning: 'gen7_0_0_external_core_regs__always_unused' defined but not used [-Wunused-variable] > static const u32 *gen7_0_0_external_core_regs__always_unused[] = { > ^ I don't see this symbol in upstream. > In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:19:0: > drivers/gpu/drm/msm/adreno/adreno_gen7_2_0_snapshot.h:748:19: warning: 'gen7_2_0_external_core_regs' defined but not used [-Wunused-variable] > static const u32 *gen7_2_0_external_core_regs[] = { > ^ > In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:20:0: > drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1188:43: warning: 'gen7_9_0_sptp_clusters' defined but not used [-Wunused-variable] > static struct gen7_sptp_cluster_registers gen7_9_0_sptp_clusters[] = { > ^ > drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1438:19: warning: 'gen7_9_0_external_core_regs' defined but not used [-Wunused-variable] > static const u32 *gen7_9_0_external_core_regs[] = { > > Remove GCC dependency by using __always_unused for the unused gen7_* includes. > > Fixes: 64d6255650d4 ("drm/msm: More fully implement devcoredump for a7xx") > Suggested-by: Rob Clark <robdclark@chromium.org> > Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> > --- > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 13 ++++--------- > 1 file changed, 4 insertions(+), 9 deletions(-) > > diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > index 0a7717a4fc2f..62ca0cf24005 100644 > --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c > @@ -8,19 +8,10 @@ > #include "a6xx_gpu_state.h" > #include "a6xx_gmu.xml.h" > > -/* Ignore diagnostics about register tables that we aren't using yet. We don't > - * want to modify these headers too much from their original source. > - */ > -#pragma GCC diagnostic push > -#pragma GCC diagnostic ignored "-Wunused-variable" > -#pragma GCC diagnostic ignored "-Wunused-const-variable" > - > #include "adreno_gen7_0_0_snapshot.h" > #include "adreno_gen7_2_0_snapshot.h" > #include "adreno_gen7_9_0_snapshot.h" > > -#pragma GCC diagnostic pop > - > struct a6xx_gpu_state_obj { > const void *handle; > u32 *data; > @@ -1350,6 +1341,10 @@ static void a7xx_get_registers(struct msm_gpu *gpu, > int index = 0; > const u32 *pre_crashdumper_regs; > const struct gen7_reg_list *reglist; > + __always_unused const u32 **external_core_regs7_0_0 = gen7_0_0_external_core_regs; > + __always_unused const u32 **external_core_regs_7_2_0 = gen7_2_0_external_core_regs; > + __always_unused const u32 **external_core_regs_7_9_0 = gen7_9_0_external_core_regs; > + __always_unused struct gen7_sptp_cluster_registers *sptp_gen7 = gen7_9_0_sptp_clusters; Wouldn't it be easier to add something like the following to the a6xx_gpu_state.c before including the headers: static const unsigned int *gen7_0_0_external_core_regs[] __attribute((__unused__)); static const unsigned int *gen7_2_0_external_core_regs[] __attribute((__unused__)); static const unsigned int *gen7_9_0_external_core_regs[] __attribute((__unused__)); > > if (adreno_is_a730(adreno_gpu)) { > reglist = gen7_0_0_reg_list; > -- > 2.44.0 >
On 6/4/2024 4:58 PM, Dmitry Baryshkov wrote: > On Tue, Jun 04, 2024 at 02:51:04PM -0700, Abhinav Kumar wrote: >> GCC diagnostic pragma method throws below warnings in some of the versions >> >> drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:16:9: warning: unknown option after '#pragma GCC diagnostic' kind [-Wpragmas] >> #pragma GCC diagnostic ignored "-Wunused-const-variable" >> ^ >> In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:18:0: >> drivers/gpu/drm/msm/adreno/adreno_gen7_0_0_snapshot.h:924:19: warning: 'gen7_0_0_external_core_regs__always_unused' defined but not used [-Wunused-variable] >> static const u32 *gen7_0_0_external_core_regs__always_unused[] = { >> ^ > > I don't see this symbol in upstream. > This was a C&P mistake. Instead of pasting the warning message from the default msm-next, I pasted the warning message from one of my trial runs (a bad one). I will fix the commit message when I post a v2. The correct warnings are: drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:16:9: warning: unknown option after '#pragma GCC diagnostic' kind [-Wpragmas] #pragma GCC diagnostic ignored "-Wunused-const-variable" ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:18:0: drivers/gpu/drm/msm/adreno/adreno_gen7_0_0_snapshot.h:924:19: warning: 'gen7_0_0_external_core_regs' defined but not used [-Wunused-variable] static const u32 *gen7_0_0_external_core_regs[] = { ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:19:0: drivers/gpu/drm/msm/adreno/adreno_gen7_2_0_snapshot.h:748:19: warning: 'gen7_2_0_external_core_regs' defined but not used [-Wunused-variable] static const u32 *gen7_2_0_external_core_regs[] = { ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:20:0: drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1188:43: warning: 'gen7_9_0_sptp_clusters' defined but not used [-Wunused-variable] static struct gen7_sptp_cluster_registers gen7_9_0_sptp_clusters[] = { ^ drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1438:19: warning: 'gen7_9_0_external_core_regs' defined but not used [-Wunused-variable] static const u32 *gen7_9_0_external_core_regs[] = { >> In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:19:0: >> drivers/gpu/drm/msm/adreno/adreno_gen7_2_0_snapshot.h:748:19: warning: 'gen7_2_0_external_core_regs' defined but not used [-Wunused-variable] >> static const u32 *gen7_2_0_external_core_regs[] = { >> ^ >> In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:20:0: >> drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1188:43: warning: 'gen7_9_0_sptp_clusters' defined but not used [-Wunused-variable] >> static struct gen7_sptp_cluster_registers gen7_9_0_sptp_clusters[] = { >> ^ >> drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1438:19: warning: 'gen7_9_0_external_core_regs' defined but not used [-Wunused-variable] >> static const u32 *gen7_9_0_external_core_regs[] = { >> >> Remove GCC dependency by using __always_unused for the unused gen7_* includes. >> >> Fixes: 64d6255650d4 ("drm/msm: More fully implement devcoredump for a7xx") >> Suggested-by: Rob Clark <robdclark@chromium.org> >> Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> >> --- >> drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 13 ++++--------- >> 1 file changed, 4 insertions(+), 9 deletions(-) >> >> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c >> index 0a7717a4fc2f..62ca0cf24005 100644 >> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c >> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c >> @@ -8,19 +8,10 @@ >> #include "a6xx_gpu_state.h" >> #include "a6xx_gmu.xml.h" >> >> -/* Ignore diagnostics about register tables that we aren't using yet. We don't >> - * want to modify these headers too much from their original source. >> - */ >> -#pragma GCC diagnostic push >> -#pragma GCC diagnostic ignored "-Wunused-variable" >> -#pragma GCC diagnostic ignored "-Wunused-const-variable" >> - >> #include "adreno_gen7_0_0_snapshot.h" >> #include "adreno_gen7_2_0_snapshot.h" >> #include "adreno_gen7_9_0_snapshot.h" >> >> -#pragma GCC diagnostic pop >> - >> struct a6xx_gpu_state_obj { >> const void *handle; >> u32 *data; >> @@ -1350,6 +1341,10 @@ static void a7xx_get_registers(struct msm_gpu *gpu, >> int index = 0; >> const u32 *pre_crashdumper_regs; >> const struct gen7_reg_list *reglist; >> + __always_unused const u32 **external_core_regs7_0_0 = gen7_0_0_external_core_regs; >> + __always_unused const u32 **external_core_regs_7_2_0 = gen7_2_0_external_core_regs; >> + __always_unused const u32 **external_core_regs_7_9_0 = gen7_9_0_external_core_regs; >> + __always_unused struct gen7_sptp_cluster_registers *sptp_gen7 = gen7_9_0_sptp_clusters; > > Wouldn't it be easier to add something like the following to the > a6xx_gpu_state.c before including the headers: > > static const unsigned int *gen7_0_0_external_core_regs[] __attribute((__unused__)); > static const unsigned int *gen7_2_0_external_core_regs[] __attribute((__unused__)); > static const unsigned int *gen7_9_0_external_core_regs[] __attribute((__unused__)); > Ack, this works too and its cleaner. let me push it this way. Thanks. >> >> if (adreno_is_a730(adreno_gpu)) { >> reglist = gen7_0_0_reg_list; >> -- >> 2.44.0 >> >
Hi Abhinav,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-intel/for-linux-next-fixes]
[also build test ERROR on drm-tip/drm-tip linus/master v6.10-rc2 next-20240604]
[cannot apply to drm-intel/for-linux-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Abhinav-Kumar/drm-msm-a6xx-use-__always_unused-to-fix-compiler-warnings-for-gen7_-includes/20240605-055341
base: git://anongit.freedesktop.org/drm-intel for-linux-next-fixes
patch link: https://lore.kernel.org/r/20240604215105.4057278-1-quic_abhinavk%40quicinc.com
patch subject: [PATCH] drm/msm/a6xx: use __always_unused to fix compiler warnings for gen7_* includes
config: um-allyesconfig (https://download.01.org/0day-ci/archive/20240605/202406051226.b050NPQf-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240605/202406051226.b050NPQf-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406051226.b050NPQf-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:13:
>> drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:114:18: error: 'gen7_9_0_cx_debugbus_blocks' defined but not used [-Werror=unused-const-variable=]
114 | static const u32 gen7_9_0_cx_debugbus_blocks[] = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/gen7_9_0_cx_debugbus_blocks +114 drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h
6408a1b5a7d7a9 Connor Abbott 2024-05-03 113
6408a1b5a7d7a9 Connor Abbott 2024-05-03 @114 static const u32 gen7_9_0_cx_debugbus_blocks[] = {
106414f8b60346 Connor Abbott 2024-05-03 115 A7XX_DBGBUS_CX,
106414f8b60346 Connor Abbott 2024-05-03 116 A7XX_DBGBUS_GMU_CX,
106414f8b60346 Connor Abbott 2024-05-03 117 A7XX_DBGBUS_GBIF_CX,
6408a1b5a7d7a9 Connor Abbott 2024-05-03 118 };
6408a1b5a7d7a9 Connor Abbott 2024-05-03 119
Hi Abhinav,
kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-intel/for-linux-next-fixes]
[also build test WARNING on drm-tip/drm-tip linus/master v6.10-rc2 next-20240604]
[cannot apply to drm-intel/for-linux-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Abhinav-Kumar/drm-msm-a6xx-use-__always_unused-to-fix-compiler-warnings-for-gen7_-includes/20240605-055341
base: git://anongit.freedesktop.org/drm-intel for-linux-next-fixes
patch link: https://lore.kernel.org/r/20240604215105.4057278-1-quic_abhinavk%40quicinc.com
patch subject: [PATCH] drm/msm/a6xx: use __always_unused to fix compiler warnings for gen7_* includes
config: i386-buildonly-randconfig-001-20240605 (https://download.01.org/0day-ci/archive/20240605/202406051244.xdNC6LyO-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240605/202406051244.xdNC6LyO-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406051244.xdNC6LyO-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:13:
>> drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:114:18: warning: 'gen7_9_0_cx_debugbus_blocks' defined but not used [-Wunused-const-variable=]
114 | static const u32 gen7_9_0_cx_debugbus_blocks[] = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/gen7_9_0_cx_debugbus_blocks +114 drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h
6408a1b5a7d7a9 Connor Abbott 2024-05-03 113
6408a1b5a7d7a9 Connor Abbott 2024-05-03 @114 static const u32 gen7_9_0_cx_debugbus_blocks[] = {
106414f8b60346 Connor Abbott 2024-05-03 115 A7XX_DBGBUS_CX,
106414f8b60346 Connor Abbott 2024-05-03 116 A7XX_DBGBUS_GMU_CX,
106414f8b60346 Connor Abbott 2024-05-03 117 A7XX_DBGBUS_GBIF_CX,
6408a1b5a7d7a9 Connor Abbott 2024-05-03 118 };
6408a1b5a7d7a9 Connor Abbott 2024-05-03 119
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c index 0a7717a4fc2f..62ca0cf24005 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c @@ -8,19 +8,10 @@ #include "a6xx_gpu_state.h" #include "a6xx_gmu.xml.h" -/* Ignore diagnostics about register tables that we aren't using yet. We don't - * want to modify these headers too much from their original source. - */ -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wunused-variable" -#pragma GCC diagnostic ignored "-Wunused-const-variable" - #include "adreno_gen7_0_0_snapshot.h" #include "adreno_gen7_2_0_snapshot.h" #include "adreno_gen7_9_0_snapshot.h" -#pragma GCC diagnostic pop - struct a6xx_gpu_state_obj { const void *handle; u32 *data; @@ -1350,6 +1341,10 @@ static void a7xx_get_registers(struct msm_gpu *gpu, int index = 0; const u32 *pre_crashdumper_regs; const struct gen7_reg_list *reglist; + __always_unused const u32 **external_core_regs7_0_0 = gen7_0_0_external_core_regs; + __always_unused const u32 **external_core_regs_7_2_0 = gen7_2_0_external_core_regs; + __always_unused const u32 **external_core_regs_7_9_0 = gen7_9_0_external_core_regs; + __always_unused struct gen7_sptp_cluster_registers *sptp_gen7 = gen7_9_0_sptp_clusters; if (adreno_is_a730(adreno_gpu)) { reglist = gen7_0_0_reg_list;
GCC diagnostic pragma method throws below warnings in some of the versions drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:16:9: warning: unknown option after '#pragma GCC diagnostic' kind [-Wpragmas] #pragma GCC diagnostic ignored "-Wunused-const-variable" ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:18:0: drivers/gpu/drm/msm/adreno/adreno_gen7_0_0_snapshot.h:924:19: warning: 'gen7_0_0_external_core_regs__always_unused' defined but not used [-Wunused-variable] static const u32 *gen7_0_0_external_core_regs__always_unused[] = { ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:19:0: drivers/gpu/drm/msm/adreno/adreno_gen7_2_0_snapshot.h:748:19: warning: 'gen7_2_0_external_core_regs' defined but not used [-Wunused-variable] static const u32 *gen7_2_0_external_core_regs[] = { ^ In file included from drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:20:0: drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1188:43: warning: 'gen7_9_0_sptp_clusters' defined but not used [-Wunused-variable] static struct gen7_sptp_cluster_registers gen7_9_0_sptp_clusters[] = { ^ drivers/gpu/drm/msm/adreno/adreno_gen7_9_0_snapshot.h:1438:19: warning: 'gen7_9_0_external_core_regs' defined but not used [-Wunused-variable] static const u32 *gen7_9_0_external_core_regs[] = { Remove GCC dependency by using __always_unused for the unused gen7_* includes. Fixes: 64d6255650d4 ("drm/msm: More fully implement devcoredump for a7xx") Suggested-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> --- drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)