From 1d037ca1648b775277fc96401ec2aa233724906c Mon Sep 17 00:00:00 2001 From: Irina Tirdea Date: Tue, 11 Sep 2012 01:15:03 +0300 Subject: perf tools: Use __maybe_used for unused variables perf defines both __used and __unused variables to use for marking unused variables. The variable __used is defined to __attribute__((__unused__)), which contradicts the kernel definition to __attribute__((__used__)) for new gcc versions. On Android, __used is also defined in system headers and this leads to warnings like: warning: '__used__' attribute ignored __unused is not defined in the kernel and is not a standard definition. If __unused is included everywhere instead of __used, this leads to conflicts with glibc headers, since glibc has a variables with this name in its headers. The best approach is to use __maybe_unused, the definition used in the kernel for __attribute__((unused)). In this way there is only one definition in perf sources (instead of 2 definitions that point to the same thing: __used and __unused) and it works on both Linux and Android. This patch simply replaces all instances of __used and __unused with __maybe_unused. Signed-off-by: Irina Tirdea Acked-by: Pekka Enberg Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com [ committer note: fixed up conflict with a116e05 in builtin-sched.c ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/unwind.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) (limited to 'tools/perf/util/unwind.c') diff --git a/tools/perf/util/unwind.c b/tools/perf/util/unwind.c index 00a42aa8d5c1..958723ba3d2e 100644 --- a/tools/perf/util/unwind.c +++ b/tools/perf/util/unwind.c @@ -307,32 +307,36 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi, need_unwind_info, arg); } -static int access_fpreg(unw_addr_space_t __used as, unw_regnum_t __used num, - unw_fpreg_t __used *val, int __used __write, - void __used *arg) +static int access_fpreg(unw_addr_space_t __maybe_unused as, + unw_regnum_t __maybe_unused num, + unw_fpreg_t __maybe_unused *val, + int __maybe_unused __write, + void __maybe_unused *arg) { pr_err("unwind: access_fpreg unsupported\n"); return -UNW_EINVAL; } -static int get_dyn_info_list_addr(unw_addr_space_t __used as, - unw_word_t __used *dil_addr, - void __used *arg) +static int get_dyn_info_list_addr(unw_addr_space_t __maybe_unused as, + unw_word_t __maybe_unused *dil_addr, + void __maybe_unused *arg) { return -UNW_ENOINFO; } -static int resume(unw_addr_space_t __used as, unw_cursor_t __used *cu, - void __used *arg) +static int resume(unw_addr_space_t __maybe_unused as, + unw_cursor_t __maybe_unused *cu, + void __maybe_unused *arg) { pr_err("unwind: resume unsupported\n"); return -UNW_EINVAL; } static int -get_proc_name(unw_addr_space_t __used as, unw_word_t __used addr, - char __used *bufp, size_t __used buf_len, - unw_word_t __used *offp, void __used *arg) +get_proc_name(unw_addr_space_t __maybe_unused as, + unw_word_t __maybe_unused addr, + char __maybe_unused *bufp, size_t __maybe_unused buf_len, + unw_word_t __maybe_unused *offp, void __maybe_unused *arg) { pr_err("unwind: get_proc_name unsupported\n"); return -UNW_EINVAL; @@ -377,7 +381,7 @@ static int reg_value(unw_word_t *valp, struct regs_dump *regs, int id, return 0; } -static int access_mem(unw_addr_space_t __used as, +static int access_mem(unw_addr_space_t __maybe_unused as, unw_word_t addr, unw_word_t *valp, int __write, void *arg) { @@ -422,7 +426,7 @@ static int access_mem(unw_addr_space_t __used as, return 0; } -static int access_reg(unw_addr_space_t __used as, +static int access_reg(unw_addr_space_t __maybe_unused as, unw_regnum_t regnum, unw_word_t *valp, int __write, void *arg) { @@ -454,9 +458,9 @@ static int access_reg(unw_addr_space_t __used as, return 0; } -static void put_unwind_info(unw_addr_space_t __used as, - unw_proc_info_t *pi __used, - void *arg __used) +static void put_unwind_info(unw_addr_space_t __maybe_unused as, + unw_proc_info_t *pi __maybe_unused, + void *arg __maybe_unused) { pr_debug("unwind: put_unwind_info called\n"); } -- cgit v1.2.3-59-g8ed1b