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Re: [PATCH 2/2] Reduce performance cost of the trace if trace category is disabled

From
Johannes Sixt <j6t@kdbg.org>
Date
Nov 19, 2017, 08:27 UTC
Message-ID
<d9076fef-c90c-63f2-5e0e-37293810e3d9@kdbg.org>
In-Reply-To
<20171119004247.22792-2-gennady.kupava@gmail.com>
Am 19.11.2017 um 01:42 schrieb gennady.kupava@gmail.com:
Show 25 quoted lines
> +#define trace_printf_key(key, ...)					    \
> +	do {								    \
> +		if (trace_pass_fl(key))					    \
> +			trace_printf_key_fl(TRACE_CONTEXT, __LINE__, key,   \
> +					    __VA_ARGS__);		    \
> +	} while(0)
> +
> +#define trace_printf(...) trace_printf_key(&trace_default_key, __VA_ARGS__);
> +
> +#define trace_argv_printf(argv, ...)					    \
> +	do {								    \
> +		if (trace_pass_fl(&trace_default_key))			    \
> +		       trace_argv_printf_fl(TRACE_CONTEXT, __LINE__,	    \
> +					    argv, __VA_ARGS__);		    \
> +	} while(0)
> +
> +#define trace_strbuf(key, data)						    \
> +	do {								    \
> +		if (trace_pass_fl(key))					    \
> +			trace_strbuf_fl(TRACE_CONTEXT, __LINE__, key, data);\
> +	} while(0)
> +
> +#define trace_performance(nanos, ...)					    \
> +	do {								    \
> +		if (trace_pass_fl(key))					    \
The token "key" here looks suspicious. Did you mean &trace_perf_key?
Show 14 quoted lines
> +			trace_performance_fl(TRACE_CONTEXT, __LINE__, nanos,\
> +					     __VA_ARGS__);  		    \
> +	} while(0)
> +
> +#define trace_performance_since(start, ...)				    \
> +	do {								    \
> +		if (trace_pass_fl(&trace_perf_key))			    \
> +			trace_performance_fl(TRACE_CONTEXT, __LINE__,       \
> +					     getnanotime() - (start),	    \
> +					     __VA_ARGS__);		    \
> +	} while(0)
>   
>   /* backend functions, use non-*fl macros instead */
>   __attribute__((format (printf, 4, 5)))
-- Hannes
Previous: gennady.kupava@gmail.comNext: Gennady Kupava
Message 9 of 20 in “Reduce performance penalty for turned off traces”
  1. Reduce performance penalty for turned off tracesgennady.kupava@gmail.com, Nov 11, 2017
  2. Jeff KingNov 12, 2017
  3. Gennady KupavaNov 12, 2017
  4. Jeff KingNov 17, 2017
  5. Stefan BellerNov 15, 2017
  6. Jeff KingNov 17, 2017
  7. 1/2 Simplify tracing code by removing trace key normalization conceptgennady.kupava@gmail.com, Nov 19, 2017
  8. 2/2 Reduce performance cost of the trace if trace category is disabledgennady.kupava@gmail.com, Nov 19, 2017
  9. Johannes SixtNov 19, 2017
  10. Gennady KupavaNov 19, 2017
  11. Junio C HamanoNov 19, 2017
  12. Gennady KupavaNov 19, 2017
  13. Junio C HamanoNov 20, 2017
  14. Junio C HamanoNov 20, 2017
  15. 1/2 trace: remove trace key normalizationgennady.kupava@gmail.com, Nov 26, 2017
  16. 2/2 trace: improve performance while category is disabledgennady.kupava@gmail.com, Nov 26, 2017
  17. Junio C HamanoNov 27, 2017
  18. Junio C HamanoNov 27, 2017
  19. Junio C HamanoNov 27, 2017
  20. Gennady KupavaNov 27, 2017

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