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author | Irina Tirdea <irina.tirdea@gmail.com> | 2012-09-11 01:15:03 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-11 12:19:15 -0300 |
commit | 1d037ca1648b775277fc96401ec2aa233724906c (patch) | |
tree | 266722dc6c9e00c67c66f5f8d06f30d0c2dd3979 /tools/perf/util/header.c | |
parent | 7dbf4dcfe2987c35c2c4675cd7ae1b6006979176 (diff) | |
download | talos-obmc-linux-1d037ca1648b775277fc96401ec2aa233724906c.tar.gz talos-obmc-linux-1d037ca1648b775277fc96401ec2aa233724906c.zip |
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 <irina.tirdea@intel.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
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 <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r-- | tools/perf/util/header.c | 93 |
1 files changed, 50 insertions, 43 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 87996cab21d0..acbf6336199e 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -475,7 +475,7 @@ static bool perf_session__read_build_ids(struct perf_session *session, bool with return ret; } -static int write_tracing_data(int fd, struct perf_header *h __used, +static int write_tracing_data(int fd, struct perf_header *h __maybe_unused, struct perf_evlist *evlist) { return read_tracing_data(fd, &evlist->entries); @@ -483,7 +483,7 @@ static int write_tracing_data(int fd, struct perf_header *h __used, static int write_build_id(int fd, struct perf_header *h, - struct perf_evlist *evlist __used) + struct perf_evlist *evlist __maybe_unused) { struct perf_session *session; int err; @@ -504,8 +504,8 @@ static int write_build_id(int fd, struct perf_header *h, return 0; } -static int write_hostname(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_hostname(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { struct utsname uts; int ret; @@ -517,8 +517,8 @@ static int write_hostname(int fd, struct perf_header *h __used, return do_write_string(fd, uts.nodename); } -static int write_osrelease(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_osrelease(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { struct utsname uts; int ret; @@ -530,8 +530,8 @@ static int write_osrelease(int fd, struct perf_header *h __used, return do_write_string(fd, uts.release); } -static int write_arch(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_arch(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { struct utsname uts; int ret; @@ -543,14 +543,14 @@ static int write_arch(int fd, struct perf_header *h __used, return do_write_string(fd, uts.machine); } -static int write_version(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_version(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { return do_write_string(fd, perf_version_string); } -static int write_cpudesc(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { #ifndef CPUINFO_PROC #define CPUINFO_PROC NULL @@ -608,8 +608,8 @@ done: return ret; } -static int write_nrcpus(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { long nr; u32 nrc, nra; @@ -634,7 +634,7 @@ static int write_nrcpus(int fd, struct perf_header *h __used, return do_write(fd, &nra, sizeof(nra)); } -static int write_event_desc(int fd, struct perf_header *h __used, +static int write_event_desc(int fd, struct perf_header *h __maybe_unused, struct perf_evlist *evlist) { struct perf_evsel *evsel; @@ -691,8 +691,8 @@ static int write_event_desc(int fd, struct perf_header *h __used, return 0; } -static int write_cmdline(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_cmdline(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { char buf[MAXPATHLEN]; char proc[32]; @@ -860,8 +860,8 @@ static struct cpu_topo *build_cpu_topology(void) return tp; } -static int write_cpu_topology(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { struct cpu_topo *tp; u32 i; @@ -896,8 +896,8 @@ done: -static int write_total_mem(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_total_mem(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { char *buf = NULL; FILE *fp; @@ -982,8 +982,8 @@ done: return ret; } -static int write_numa_topology(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_numa_topology(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { char *buf = NULL; size_t len = 0; @@ -1043,8 +1043,8 @@ done: * }; */ -static int write_pmu_mappings(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_pmu_mappings(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { struct perf_pmu *pmu = NULL; off_t offset = lseek(fd, 0, SEEK_CUR); @@ -1074,13 +1074,14 @@ static int write_pmu_mappings(int fd, struct perf_header *h __used, * default get_cpuid(): nothing gets recorded * actual implementation must be in arch/$(ARCH)/util/header.c */ -int __attribute__((weak)) get_cpuid(char *buffer __used, size_t sz __used) +int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused, + size_t sz __maybe_unused) { return -1; } -static int write_cpuid(int fd, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_cpuid(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { char buffer[64]; int ret; @@ -1094,8 +1095,9 @@ write_it: return do_write_string(fd, buffer); } -static int write_branch_stack(int fd __used, struct perf_header *h __used, - struct perf_evlist *evlist __used) +static int write_branch_stack(int fd __maybe_unused, + struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) { return 0; } @@ -1372,7 +1374,8 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp) free_event_desc(events); } -static void print_total_mem(struct perf_header *h __used, int fd, FILE *fp) +static void print_total_mem(struct perf_header *h __maybe_unused, int fd, + FILE *fp) { uint64_t mem; ssize_t ret; @@ -1390,7 +1393,8 @@ error: fprintf(fp, "# total memory : unknown\n"); } -static void print_numa_topology(struct perf_header *h __used, int fd, FILE *fp) +static void print_numa_topology(struct perf_header *h __maybe_unused, int fd, + FILE *fp) { ssize_t ret; u32 nr, c, i; @@ -1450,7 +1454,8 @@ static void print_cpuid(struct perf_header *ph, int fd, FILE *fp) free(str); } -static void print_branch_stack(struct perf_header *ph __used, int fd __used, +static void print_branch_stack(struct perf_header *ph __maybe_unused, + int fd __maybe_unused, FILE *fp) { fprintf(fp, "# contains samples with branch stack\n"); @@ -1649,9 +1654,10 @@ out: return err; } -static int process_tracing_data(struct perf_file_section *section __unused, - struct perf_header *ph __unused, - int feat __unused, int fd, void *data) +static int process_tracing_data(struct perf_file_section *section + __maybe_unused, + struct perf_header *ph __maybe_unused, + int feat __maybe_unused, int fd, void *data) { trace_report(fd, data, false); return 0; @@ -1659,7 +1665,8 @@ static int process_tracing_data(struct perf_file_section *section __unused, static int process_build_id(struct perf_file_section *section, struct perf_header *ph, - int feat __unused, int fd, void *data __used) + int feat __maybe_unused, int fd, + void *data __maybe_unused) { if (perf_header__read_build_ids(ph, fd, section->offset, section->size)) pr_debug("Failed to read buildids, continuing...\n"); @@ -1698,9 +1705,9 @@ perf_evlist__set_event_name(struct perf_evlist *evlist, struct perf_evsel *event } static int -process_event_desc(struct perf_file_section *section __unused, - struct perf_header *header, int feat __unused, int fd, - void *data __used) +process_event_desc(struct perf_file_section *section __maybe_unused, + struct perf_header *header, int feat __maybe_unused, int fd, + void *data __maybe_unused) { struct perf_session *session = container_of(header, struct perf_session, header); struct perf_evsel *evsel, *events = read_event_desc(header, fd); @@ -2596,7 +2603,7 @@ int perf_event__synthesize_event_types(struct perf_tool *tool, return err; } -int perf_event__process_event_type(struct perf_tool *tool __unused, +int perf_event__process_event_type(struct perf_tool *tool __maybe_unused, union perf_event *event) { if (perf_header__push_event(event->event_type.event_type.event_id, @@ -2613,7 +2620,7 @@ int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, union perf_event ev; struct tracing_data *tdata; ssize_t size = 0, aligned_size = 0, padding; - int err __used = 0; + int err __maybe_unused = 0; /* * We are going to store the size of the data followed @@ -2712,7 +2719,7 @@ int perf_event__synthesize_build_id(struct perf_tool *tool, return err; } -int perf_event__process_build_id(struct perf_tool *tool __used, +int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, union perf_event *event, struct perf_session *session) { |