From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Will Deacon <will.deacon@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Shuah Khan <shuah@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Jiri Olsa <jolsa@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, netdev@vger.kernel.org,
linux-perf-users@vger.kernel.org,
Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Subject: [PATCH 3/5] arm64/bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type
Date: Fri, 1 Dec 2017 15:19:06 +0100 [thread overview]
Message-ID: <1512137948-31729-4-git-send-email-brueckner@linux.vnet.ibm.com> (raw)
In-Reply-To: <1512137948-31729-1-git-send-email-brueckner@linux.vnet.ibm.com>
Correct the broken uapi for the BPF_PROG_TYPE_PERF_EVENT program type
by exporting the user_pt_regs structure instead of the pt_regs structure
that is in-kernel only.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
---
arch/arm64/include/asm/perf_event.h | 2 ++
arch/arm64/include/uapi/asm/bpf_perf_event.h | 9 +++++++++
2 files changed, 11 insertions(+)
create mode 100644 arch/arm64/include/uapi/asm/bpf_perf_event.h
diff --git a/arch/arm64/include/asm/perf_event.h b/arch/arm64/include/asm/perf_event.h
index 8d5cbec..f9ccc36 100644
--- a/arch/arm64/include/asm/perf_event.h
+++ b/arch/arm64/include/asm/perf_event.h
@@ -18,6 +18,7 @@
#define __ASM_PERF_EVENT_H
#include <asm/stack_pointer.h>
+#include <asm/ptrace.h>
#define ARMV8_PMU_MAX_COUNTERS 32
#define ARMV8_PMU_COUNTER_MASK (ARMV8_PMU_MAX_COUNTERS - 1)
@@ -79,6 +80,7 @@
extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
extern unsigned long perf_misc_flags(struct pt_regs *regs);
#define perf_misc_flags(regs) perf_misc_flags(regs)
+#define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs
#endif
#define perf_arch_fetch_caller_regs(regs, __ip) { \
diff --git a/arch/arm64/include/uapi/asm/bpf_perf_event.h b/arch/arm64/include/uapi/asm/bpf_perf_event.h
new file mode 100644
index 0000000..b551b74
--- /dev/null
+++ b/arch/arm64/include/uapi/asm/bpf_perf_event.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _UAPI__ASM_BPF_PERF_EVENT_H__
+#define _UAPI__ASM_BPF_PERF_EVENT_H__
+
+#include <asm/ptrace.h>
+
+typedef struct user_pt_regs bpf_user_pt_regs_t;
+
+#endif /* _UAPI__ASM_BPF_PERF_EVENT_H__ */
--
1.8.3.1
next prev parent reply other threads:[~2017-12-01 14:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-01 14:19 [PATCH 0/5] bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type Hendrik Brueckner
2017-12-01 14:19 ` [PATCH 1/5] " Hendrik Brueckner
2017-12-04 4:00 ` kbuild test robot
2017-12-01 14:19 ` [PATCH 2/5] s390/bpf: " Hendrik Brueckner
2017-12-01 14:19 ` Hendrik Brueckner [this message]
2017-12-01 14:19 ` [PATCH 4/5] selftests/bpf: sync kernel headers and introduce arch support in Makefile Hendrik Brueckner
2017-12-01 14:19 ` [PATCH 5/5] perf s390: add regs_query_register_offset() Hendrik Brueckner
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