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author | Adrian Hunter <adrian.hunter@intel.com> | 2015-09-25 13:15:35 (GMT) |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-09-28 19:45:26 (GMT) |
commit | 116f349c5bf8c7aec4047dd6e06c310354b46e4f (patch) | |
tree | 6a6596049af5450e5a521915a7a56bddb39d4393 /tools/perf/util | |
parent | 9992c2d50a73f442653968a98a9e5f3bf4e769e9 (diff) | |
download | linux-116f349c5bf8c7aec4047dd6e06c310354b46e4f.tar.xz |
perf intel-pt: Make logging slightly more efficient
Logging is only used for debugging. Use macros to save calling into the
functions only to return immediately when logging is not enabled.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-5-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-log.c | 21 | ||||
-rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-log.h | 38 |
2 files changed, 43 insertions, 16 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.c b/tools/perf/util/intel-pt-decoder/intel-pt-log.c index d09c7d9..319bef3 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-log.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.c @@ -29,18 +29,18 @@ static FILE *f; static char log_name[MAX_LOG_NAME]; -static bool enable_logging; +bool intel_pt_enable_logging; void intel_pt_log_enable(void) { - enable_logging = true; + intel_pt_enable_logging = true; } void intel_pt_log_disable(void) { if (f) fflush(f); - enable_logging = false; + intel_pt_enable_logging = false; } void intel_pt_log_set_name(const char *name) @@ -80,7 +80,7 @@ static void intel_pt_print_no_data(uint64_t pos, int indent) static int intel_pt_log_open(void) { - if (!enable_logging) + if (!intel_pt_enable_logging) return -1; if (f) @@ -91,15 +91,15 @@ static int intel_pt_log_open(void) f = fopen(log_name, "w+"); if (!f) { - enable_logging = false; + intel_pt_enable_logging = false; return -1; } return 0; } -void intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, - uint64_t pos, const unsigned char *buf) +void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, + uint64_t pos, const unsigned char *buf) { char desc[INTEL_PT_PKT_DESC_MAX]; @@ -111,7 +111,7 @@ void intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, fprintf(f, "%s\n", desc); } -void intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip) +void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip) { char desc[INTEL_PT_INSN_DESC_MAX]; size_t len = intel_pt_insn->length; @@ -128,7 +128,8 @@ void intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip) fprintf(f, "Bad instruction!\n"); } -void intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, uint64_t ip) +void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, + uint64_t ip) { char desc[INTEL_PT_INSN_DESC_MAX]; @@ -142,7 +143,7 @@ void intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, uint64_t ip) fprintf(f, "Bad instruction!\n"); } -void intel_pt_log(const char *fmt, ...) +void __intel_pt_log(const char *fmt, ...) { va_list args; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.h b/tools/perf/util/intel-pt-decoder/intel-pt-log.h index db3942f..debe751 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-log.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.h @@ -25,20 +25,46 @@ void intel_pt_log_enable(void); void intel_pt_log_disable(void); void intel_pt_log_set_name(const char *name); -void intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, - uint64_t pos, const unsigned char *buf); +void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, + uint64_t pos, const unsigned char *buf); struct intel_pt_insn; -void intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip); -void intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, - uint64_t ip); +void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip); +void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, + uint64_t ip); __attribute__((format(printf, 1, 2))) -void intel_pt_log(const char *fmt, ...); +void __intel_pt_log(const char *fmt, ...); + +#define intel_pt_log(fmt, ...) \ + do { \ + if (intel_pt_enable_logging) \ + __intel_pt_log(fmt, ##__VA_ARGS__); \ + } while (0) + +#define intel_pt_log_packet(arg, ...) \ + do { \ + if (intel_pt_enable_logging) \ + __intel_pt_log_packet(arg, ##__VA_ARGS__); \ + } while (0) + +#define intel_pt_log_insn(arg, ...) \ + do { \ + if (intel_pt_enable_logging) \ + __intel_pt_log_insn(arg, ##__VA_ARGS__); \ + } while (0) + +#define intel_pt_log_insn_no_data(arg, ...) \ + do { \ + if (intel_pt_enable_logging) \ + __intel_pt_log_insn_no_data(arg, ##__VA_ARGS__); \ + } while (0) #define x64_fmt "0x%" PRIx64 +extern bool intel_pt_enable_logging; + static inline void intel_pt_log_at(const char *msg, uint64_t u) { intel_pt_log("%s at " x64_fmt "\n", msg, u); |