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X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-xe@lists.freedesktop.org Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On Thu, Dec 07, 2023 at 10:43:15PM -0800, Ashutosh Dixit wrote: >Introduce oa_max_sample_rate sysctl to set a max limit on the frequency of >periodic OA reports. > >Signed-off-by: Ashutosh Dixit >--- > drivers/gpu/drm/xe/Makefile | 1 + > drivers/gpu/drm/xe/xe_device.c | 7 +++++ > drivers/gpu/drm/xe/xe_module.c | 5 ++++ > drivers/gpu/drm/xe/xe_oa.c | 49 ++++++++++++++++++++++++++++++++++ > drivers/gpu/drm/xe/xe_oa.h | 16 +++++++++++ > 5 files changed, 78 insertions(+) > create mode 100644 drivers/gpu/drm/xe/xe_oa.c > create mode 100644 drivers/gpu/drm/xe/xe_oa.h > >diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile >index b719953d9d30f..cf7e0e5261f73 100644 >--- a/drivers/gpu/drm/xe/Makefile >+++ b/drivers/gpu/drm/xe/Makefile >@@ -98,6 +98,7 @@ xe-y += xe_bb.o \ > xe_mmio.o \ > xe_mocs.o \ > xe_module.o \ >+ xe_oa.o \ > xe_pat.o \ > xe_pci.o \ > xe_pcode.o \ >diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c >index 35616d1a81a31..744d573eb2720 100644 >--- a/drivers/gpu/drm/xe/xe_device.c >+++ b/drivers/gpu/drm/xe/xe_device.c >@@ -29,6 +29,7 @@ > #include "xe_irq.h" > #include "xe_mmio.h" > #include "xe_module.h" >+#include "xe_oa.h" > #include "xe_pat.h" > #include "xe_pcode.h" > #include "xe_perf.h" >@@ -480,6 +481,10 @@ int xe_device_probe(struct xe_device *xe) > > xe_heci_gsc_init(xe); > >+ err = xe_oa_init(xe); >+ if (err) >+ goto err_irq_shutdown; >+ > err = xe_display_init(xe); > if (err) > goto err_irq_shutdown; ^ this needs to do an xe_oa_fini on failure, so should be a different/new goto label. Umesh >@@ -526,6 +531,8 @@ void xe_device_remove(struct xe_device *xe) > > xe_display_fini(xe); > >+ xe_oa_fini(xe); >+ > xe_heci_gsc_fini(xe); > > xe_irq_shutdown(xe); >diff --git a/drivers/gpu/drm/xe/xe_module.c b/drivers/gpu/drm/xe/xe_module.c >index 8629330d928b0..176d3e6ec8464 100644 >--- a/drivers/gpu/drm/xe/xe_module.c >+++ b/drivers/gpu/drm/xe/xe_module.c >@@ -10,6 +10,7 @@ > > #include "xe_drv.h" > #include "xe_hw_fence.h" >+#include "xe_oa.h" > #include "xe_pci.h" > #include "xe_perf.h" > #include "xe_pmu.h" >@@ -76,6 +77,10 @@ static const struct init_funcs init_funcs[] = { > .init = xe_perf_sysctl_register, > .exit = xe_perf_sysctl_unregister, > }, >+ { >+ .init = xe_oa_sysctl_register, >+ .exit = xe_oa_sysctl_unregister, >+ }, > }; > > static int __init xe_init(void) >diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c >new file mode 100644 >index 0000000000000..f4cacb4af47c5 >--- /dev/null >+++ b/drivers/gpu/drm/xe/xe_oa.c >@@ -0,0 +1,49 @@ >+// SPDX-License-Identifier: MIT >+/* >+ * Copyright © 2023 Intel Corporation >+ */ >+ >+#include >+ >+#include "xe_device.h" >+#include "xe_oa.h" >+ >+static int xe_oa_sample_rate_hard_limit; >+static u32 xe_oa_max_sample_rate = 100000; >+ >+static struct ctl_table_header *sysctl_header; >+ >+int xe_oa_init(struct xe_device *xe) >+{ >+ /* Choose a representative limit */ >+ xe_oa_sample_rate_hard_limit = xe_root_mmio_gt(xe)->info.reference_clock / 2; >+ return 0; >+} >+ >+void xe_oa_fini(struct xe_device *xe) >+{ >+} >+ >+static struct ctl_table oa_ctl_table[] = { >+ { >+ .procname = "oa_max_sample_rate", >+ .data = &xe_oa_max_sample_rate, >+ .maxlen = sizeof(xe_oa_max_sample_rate), >+ .mode = 0644, >+ .proc_handler = proc_dointvec_minmax, >+ .extra1 = SYSCTL_ZERO, >+ .extra2 = &xe_oa_sample_rate_hard_limit, >+ }, >+ {} >+}; >+ >+int xe_oa_sysctl_register(void) >+{ >+ sysctl_header = register_sysctl("dev/xe", oa_ctl_table); >+ return 0; >+} >+ >+void xe_oa_sysctl_unregister(void) >+{ >+ unregister_sysctl_table(sysctl_header); >+} >diff --git a/drivers/gpu/drm/xe/xe_oa.h b/drivers/gpu/drm/xe/xe_oa.h >new file mode 100644 >index 0000000000000..1b81330c9708b >--- /dev/null >+++ b/drivers/gpu/drm/xe/xe_oa.h >@@ -0,0 +1,16 @@ >+/* SPDX-License-Identifier: MIT */ >+/* >+ * Copyright © 2023 Intel Corporation >+ */ >+ >+#ifndef _XE_OA_H_ >+#define _XE_OA_H_ >+ >+struct xe_device; >+ >+int xe_oa_init(struct xe_device *xe); >+void xe_oa_fini(struct xe_device *xe); >+int xe_oa_sysctl_register(void); >+void xe_oa_sysctl_unregister(void); >+ >+#endif >-- >2.41.0 >