From: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
To: <linux-kernel@vger.kernel.org>
Cc: <linux-api@vger.kernel.org>, <luto@amacapital.net>,
<rostedt@goodmis.org>,
Marcin Nowakowski <marcin.nowakowski@imgtec.com>,
Ingo Molnar <mingo@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
<sparclinux@vger.kernel.org>
Subject: [PATCH v4 11/12] sparc/tracing: fix compat syscall handling
Date: Fri, 14 Oct 2016 10:35:14 +0200 [thread overview]
Message-ID: <1476434115-25428-13-git-send-email-marcin.nowakowski@imgtec.com> (raw)
In-Reply-To: <1476434115-25428-1-git-send-email-marcin.nowakowski@imgtec.com>
Add missing arch code - arch_trace_is_compat_syscall and
arch_syscall_addr
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
---
arch/sparc/include/asm/ftrace.h | 10 ++++++++++
arch/sparc/kernel/Makefile | 1 +
arch/sparc/kernel/ftrace.c | 14 ++++++++++++++
3 files changed, 25 insertions(+)
diff --git a/arch/sparc/include/asm/ftrace.h b/arch/sparc/include/asm/ftrace.h
index 62755a3..82e5269 100644
--- a/arch/sparc/include/asm/ftrace.h
+++ b/arch/sparc/include/asm/ftrace.h
@@ -6,6 +6,16 @@
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
#ifndef __ASSEMBLY__
+
+#if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_COMPAT)
+#include <asm/compat.h>
+
+#define ARCH_COMPAT_SYSCALL_NUMBERS_OVERLAP 1
+static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
+{
+ return in_compat_syscall();
+}
+#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_COMPAT */
void _mcount(void);
#endif
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index fa3c02d..7808084 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -93,6 +93,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
+obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
obj-$(CONFIG_EARLYFB) += btext.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c
index 6bcff69..e76f012 100644
--- a/arch/sparc/kernel/ftrace.c
+++ b/arch/sparc/kernel/ftrace.c
@@ -145,3 +145,17 @@ unsigned long prepare_ftrace_return(unsigned long parent,
return return_hooker;
}
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+
+#if (defined CONFIG_FTRACE_SYSCALLS) && (defined CONFIG_COMPAT)
+extern const unsigned int sys_call_table[];
+extern const unsigned int sys_call_table32[];
+
+unsigned long __init arch_syscall_addr(int nr, bool compat)
+{
+ if (compat)
+ return (unsigned long)sys_call_table32[nr];
+
+ return (unsigned long)sys_call_table[nr];
+}
+
+#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_COMPAT */
--
2.7.4
next prev parent reply other threads:[~2016-10-14 8:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-14 8:35 [PATCH v4 00/12] syscall/tracing: compat syscall support Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 01/12] tracing/syscalls: remove syscall_nr from syscall metadata Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 02/12] tracing/syscalls: add handling for compat tasks Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 03/12] tracing/syscalls: drop arch_syscall_match_sym_name Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 04/12] tracing/syscalls: add compat syscall metadata Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 05/12] syscall/tracing: allow arch to override syscall_get_nr for ftrace Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 05/12] tracing/syscalls: " Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 06/12] x86/tracing: fix compat syscall handling Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 07/12] s390/tracing: " Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 08/12] arm64/tracing: " Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 09/12] powerpc/tracing: " Marcin Nowakowski
2016-10-14 8:35 ` [PATCH v4 10/12] tile/tracing: " Marcin Nowakowski
2016-10-14 8:35 ` Marcin Nowakowski [this message]
2016-10-14 8:35 ` [PATCH v4 12/12] parisc/tracing: " Marcin Nowakowski
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