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![Ian Rogers](/assets/img/avatar_default.png)
By default bison uses global state for compatibility with yacc. Make the parser reentrant so that it may be used in asynchronous and multithreaded situations. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230406065224.2553640-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
48 lines
767 B
Text
48 lines
767 B
Text
%option prefix="perf_pmu_"
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%option reentrant
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%option bison-bridge
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%{
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#include <stdlib.h>
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#include <linux/bitops.h>
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#include "pmu.h"
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#include "pmu-bison.h"
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char *perf_pmu_get_text(yyscan_t yyscanner);
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YYSTYPE *perf_pmu_get_lval(yyscan_t yyscanner);
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static int value(yyscan_t scanner, int base)
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{
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YYSTYPE *yylval = perf_pmu_get_lval(scanner);
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char *text = perf_pmu_get_text(scanner);
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long num;
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errno = 0;
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num = strtoul(text, NULL, base);
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if (errno)
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return PP_ERROR;
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yylval->num = num;
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return PP_VALUE;
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}
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%}
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num_dec [0-9]+
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%%
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{num_dec} { return value(yyscanner, 10); }
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config { return PP_CONFIG; }
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- { return '-'; }
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: { return ':'; }
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, { return ','; }
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. { ; }
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\n { ; }
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%%
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int perf_pmu_wrap(void *scanner __maybe_unused)
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{
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return 1;
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}
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