On 4/14/22 01:11, Sergey Matyukevich wrote:
From: Sergey Matyukevich <sergey.matyukevich@xxxxxxxxxxxx>
Define appropriate uapi for the BPF_PROG_TYPE_PERF_EVENT program type
by exporting the user_regs_struct structure instead of the pt_regs
structure that is in-kernel only.
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@xxxxxxxxxxxx>
---
Originally I sent this patch via linux-snps-arc mailing list: see [1].
However this patch accompanies ARC support for libbpf bpf_tracing.h
accepted to bpf kernel tree: see [2].
So it looks like it makes sense to post this patch here as well.
I will also update linux-snps-arc patch series accordingly.
Regards,
Sergey
Applied !
Thx,
-Vineet
[1] https://lore.kernel.org/linux-snps-arc/20220408155804.587197-1-geomatsi@xxxxxxxxx/
[2] https://lore.kernel.org/bpf/20220408224442.599566-1-geomatsi@xxxxxxxxx/
arch/arc/include/asm/perf_event.h | 4 ++++
arch/arc/include/uapi/asm/bpf_perf_event.h | 9 +++++++++
2 files changed, 13 insertions(+)
create mode 100644 arch/arc/include/uapi/asm/bpf_perf_event.h
diff --git a/arch/arc/include/asm/perf_event.h b/arch/arc/include/asm/perf_event.h
index 4c919c0f4b30..d5719a260864 100644
--- a/arch/arc/include/asm/perf_event.h
+++ b/arch/arc/include/asm/perf_event.h
@@ -63,4 +63,8 @@ struct arc_reg_cc_build {
#define PERF_COUNT_ARC_HW_MAX (PERF_COUNT_HW_MAX + 8)
+#ifdef CONFIG_PERF_EVENTS
+#define perf_arch_bpf_user_pt_regs(regs) (struct user_regs_struct *)regs
+#endif
+
#endif /* __ASM_PERF_EVENT_H */
diff --git a/arch/arc/include/uapi/asm/bpf_perf_event.h b/arch/arc/include/uapi/asm/bpf_perf_event.h
new file mode 100644
index 000000000000..6cb1c2823288
--- /dev/null
+++ b/arch/arc/include/uapi/asm/bpf_perf_event.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI__ASM_BPF_PERF_EVENT_H__
+#define _UAPI__ASM_BPF_PERF_EVENT_H__
+
+#include <asm/ptrace.h>
+
+typedef struct user_regs_struct bpf_user_pt_regs_t;
+
+#endif /* _UAPI__ASM_BPF_PERF_EVENT_H__ */
