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81e70d7ee4
Now perf tool uses the common stub function process_event_op2_stub() for dumping TIME_CONV event, thus it doesn't output the clock parameters contained in the event. This patch adds the callback function for dumping the hardware clock parameters in TIME_CONV event. Before: # perf report -D 0x978 [0x38]: event: 79 . . ... raw event: size 56 bytes . 0000: 4f 00 00 00 00 00 38 00 15 00 00 00 00 00 00 00 O.....8......... . 0010: 00 00 40 01 00 00 00 00 86 89 0b bf df ff ff ff ..@........<BF><DF><FF><FF><FF> . 0020: d1 c1 b2 39 03 00 00 00 ff ff ff ff ff ff ff 00 <D1><C1><B2>9....<FF><FF><FF><FF><FF><FF><FF>. . 0030: 01 01 00 00 00 00 00 00 ........ 0 0 0x978 [0x38]: PERF_RECORD_TIME_CONV : unhandled! [...] After: # perf report -D 0x978 [0x38]: event: 79 . . ... raw event: size 56 bytes . 0000: 4f 00 00 00 00 00 38 00 15 00 00 00 00 00 00 00 O.....8......... . 0010: 00 00 40 01 00 00 00 00 86 89 0b bf df ff ff ff ..@........<BF><DF><FF><FF><FF> . 0020: d1 c1 b2 39 03 00 00 00 ff ff ff ff ff ff ff 00 <D1><C1><B2>9....<FF><FF><FF><FF><FF><FF><FF>. . 0030: 01 01 00 00 00 00 00 00 ........ 0 0 0x978 [0x38]: PERF_RECORD_TIME_CONV ... Time Shift 21 ... Time Muliplier 20971520 ... Time Zero 18446743935180835206 ... Time Cycles 13852918225 ... Time Mask 0xffffffffffffff ... Cap Time Zero 1 ... Cap Time Short 1 : unhandled! [...] Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steve MacLean <Steve.MacLean@Microsoft.com> Cc: Yonatan Goldschmidt <yonatan.goldschmidt@granulate.io> Link: https://lore.kernel.org/r/20210428120915.7123-5-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
31 lines
678 B
C
31 lines
678 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_TSC_H
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#define __PERF_TSC_H
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#include <linux/types.h>
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#include "event.h"
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struct perf_tsc_conversion {
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u16 time_shift;
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u32 time_mult;
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u64 time_zero;
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u64 time_cycles;
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u64 time_mask;
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bool cap_user_time_zero;
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bool cap_user_time_short;
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};
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struct perf_event_mmap_page;
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int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
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struct perf_tsc_conversion *tc);
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u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
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u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
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u64 rdtsc(void);
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size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp);
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#endif // __PERF_TSC_H
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