From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753523Ab0FWKMJ (ORCPT ); Wed, 23 Jun 2010 06:12:09 -0400 Received: from e23smtp03.au.ibm.com ([202.81.31.145]:47738 "EHLO e23smtp03.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752609Ab0FWKEU (ORCPT ); Wed, 23 Jun 2010 06:04:20 -0400 From: "Ian Munsie" To: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Cc: Jason Baron , Frederic Weisbecker , Steven Rostedt , Ingo Molnar , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Ian Munsie , Ingo Molnar Subject: [PATCH 11/40] syscalls: add ARCH_COMPAT_SYSCALL_DEFINE() Date: Wed, 23 Jun 2010 20:02:52 +1000 Message-Id: <1277287401-28571-12-git-send-email-imunsie@au1.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1277287401-28571-1-git-send-email-imunsie@au1.ibm.com> References: <1277287401-28571-1-git-send-email-imunsie@au1.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jason Baron Add ARCH_COMPAT_SYSCALL_DEFINE#N() macro which prepends "sys32_" to arch specific compat syscall names. Identifies the 'compat' syscalls. Signed-off-by: Jason Baron Signed-off-by: Ian Munsie --- include/linux/syscalls.h | 50 ++++++++++++++++++++++++++++++++++----------- 1 files changed, 38 insertions(+), 12 deletions(-) diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 755d05b..d7096ab 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -131,7 +131,7 @@ extern struct trace_event_functions exit_syscall_print_funcs; __attribute__((__aligned__(4))) \ __attribute__((section("_ftrace_events"))) \ event_enter_##sname = { \ - .name = "sys_enter"#sname, \ + .name = "enter_"#sname, \ .class = &event_class_syscall_enter, \ .event.funcs = &enter_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ @@ -145,20 +145,20 @@ extern struct trace_event_functions exit_syscall_print_funcs; __attribute__((__aligned__(4))) \ __attribute__((section("_ftrace_events"))) \ event_exit_##sname = { \ - .name = "sys_exit"#sname, \ + .name = "exit_"#sname, \ .class = &event_class_syscall_exit, \ .event.funcs = &exit_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ } -#define SYSCALL_METADATA(sname, nb) \ +#define SYSCALL_METADATA(rname, sname, nb) \ SYSCALL_TRACE_ENTER_EVENT(sname); \ SYSCALL_TRACE_EXIT_EVENT(sname); \ static struct syscall_metadata __used \ __attribute__((__aligned__(4))) \ __attribute__((section("__syscalls_metadata"))) \ __syscall_meta_##sname = { \ - .name = "sys"#sname, \ + .name = #rname, \ .syscall_nr = -1, /* Filled in at boot */ \ .nb_args = nb, \ .types = types_##sname, \ @@ -174,12 +174,12 @@ extern struct trace_event_functions exit_syscall_print_funcs; }; #define SYSCALL_DEFINE0(sname) \ - SYSCALL_TRACE_ENTER_EVENT(_##sname); \ - SYSCALL_TRACE_EXIT_EVENT(_##sname); \ + SYSCALL_TRACE_ENTER_EVENT(sys_##sname); \ + SYSCALL_TRACE_EXIT_EVENT(sys_##sname); \ static struct syscall_metadata __used \ __attribute__((__aligned__(4))) \ __attribute__((section("__syscalls_metadata"))) \ - __syscall_meta__##sname = { \ + __syscall_meta_sys_##sname = { \ .name = "sys_"#sname, \ .syscall_nr = -1, /* Filled in at boot */ \ .nb_args = 0, \ @@ -187,8 +187,8 @@ extern struct trace_event_functions exit_syscall_print_funcs; .ftrace_exit = 0, \ .perf_enter = 0, \ .perf_exit = 0, \ - .enter_event = &event_enter__##sname, \ - .exit_event = &event_exit__##sname, \ + .enter_event = &event_enter_sys_##sname, \ + .exit_event = &event_exit_sys_##sname, \ .enter_fields = LIST_HEAD_INIT(__syscall_meta__##sname.enter_fields), \ .exit_fields = LIST_HEAD_INIT(__syscall_meta__##sname.exit_fields), \ }; \ @@ -204,6 +204,32 @@ extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) +#ifdef CONFIG_COMPAT + +#define ARCH_COMPAT_SYSCALL_DEFINE1(name, ...) COMPAT_SYSCALL_DEFINEx(1, sys32_##name, name, __VA_ARGS__) +#define ARCH_COMPAT_SYSCALL_DEFINE2(name, ...) COMPAT_SYSCALL_DEFINEx(2, sys32_##name, name, __VA_ARGS__) +#define ARCH_COMPAT_SYSCALL_DEFINE3(name, ...) COMPAT_SYSCALL_DEFINEx(3, sys32_##name, name, __VA_ARGS__) +#define ARCH_COMPAT_SYSCALL_DEFINE4(name, ...) COMPAT_SYSCALL_DEFINEx(4, sys32_##name, name, __VA_ARGS__) +#define ARCH_COMPAT_SYSCALL_DEFINE5(name, ...) COMPAT_SYSCALL_DEFINEx(5, sys32_##name, name, __VA_ARGS__) +#define ARCH_COMPAT_SYSCALL_DEFINE6(name, ...) COMPAT_SYSCALL_DEFINEx(6, sys32_##name, name, __VA_ARGS__) + +#ifdef CONFIG_FTRACE_SYSCALLS +#define COMPAT_SYSCALL_DEFINEx(x, syscall, sname, ...) \ + static const char *types_compat_sys_##sname[] = { \ + __SC_STR_TDECL##x(__VA_ARGS__) \ + }; \ + static const char *args_compat_sys_##sname[] = { \ + __SC_STR_ADECL##x(__VA_ARGS__) \ + }; \ + SYSCALL_METADATA(syscall, compat_sys_##sname, x); \ + asmlinkage long syscall(__SC_DECL##x(__VA_ARGS__)) +#else +#define COMPAT_SYSCALL_DEFINEx(x, syscall, sname, ...) \ + asmlinkage long syscall(__SC_DECL##x(__VA_ARGS__)) +#endif + +#endif + #ifdef CONFIG_PPC64 #define SYSCALL_ALIAS(alias, name) \ asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \ @@ -220,13 +246,13 @@ extern struct trace_event_functions exit_syscall_print_funcs; #ifdef CONFIG_FTRACE_SYSCALLS #define SYSCALL_DEFINEx(x, sname, ...) \ - static const char *types_##sname[] = { \ + static const char *types_sys##sname[] = { \ __SC_STR_TDECL##x(__VA_ARGS__) \ }; \ - static const char *args_##sname[] = { \ + static const char *args_sys##sname[] = { \ __SC_STR_ADECL##x(__VA_ARGS__) \ }; \ - SYSCALL_METADATA(sname, x); \ + SYSCALL_METADATA(sys##sname, sys##sname, x); \ __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) #else #define SYSCALL_DEFINEx(x, sname, ...) \ -- 1.7.1