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perf tools: Allow TSC conversion on any arch

Browse source 
It is possible to record a perf.data file on one architecture and
process it on another.

Consequently, TSC conversion functions need to be moved out of the arch
directory.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Adrian Hunter 2014-07-14 13:03:03 +03:00 • committed by Arnaldo Carvalho de Melo
commit 0b43786081
6 changed files with 40 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

2
tools/perf/Makefile.perf
View file

@ -295,6 +295,7 @@ LIB_H += util/intlist.h
LIB_H += util/perf_regs.h
LIB_H += util/unwind.h
LIB_H += util/vdso.h
LIB_H += util/tsc.h
LIB_H += ui/helpline.h
LIB_H += ui/progress.h
LIB_H += ui/util.h
@ -374,6 +375,7 @@ LIB_OBJS += $(OUTPUT)util/stat.o
LIB_OBJS += $(OUTPUT)util/record.o
LIB_OBJS += $(OUTPUT)util/srcline.o
LIB_OBJS += $(OUTPUT)util/data.o
LIB_OBJS += $(OUTPUT)util/tsc.o
LIB_OBJS += $(OUTPUT)ui/setup.o
LIB_OBJS += $(OUTPUT)ui/helpline.o

22
tools/perf/arch/x86/util/tsc.c
View file

@ -6,29 +6,9 @@
#include "../../perf.h"
#include <linux/types.h>
#include "../../util/debug.h"
#include "../../util/tsc.h"
#include "tsc.h"
u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc)
{
u64 t, quot, rem;
t = ns - tc->time_zero;
quot = t / tc->time_mult;
rem = t % tc->time_mult;
return (quot << tc->time_shift) +
(rem << tc->time_shift) / tc->time_mult;
}
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc)
{
u64 quot, rem;
quot = cyc >> tc->time_shift;
rem = cyc & ((1 << tc->time_shift) - 1);
return tc->time_zero + quot * tc->time_mult +
((rem * tc->time_mult) >> tc->time_shift);
}
int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
struct perf_tsc_conversion *tc)
{

3
tools/perf/arch/x86/util/tsc.h
View file

@ -14,7 +14,4 @@ struct perf_event_mmap_page;
int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
struct perf_tsc_conversion *tc);
u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
#endif /* TOOLS_PERF_ARCH_X86_UTIL_TSC_H__ */

3
tools/perf/tests/perf-time-to-tsc.c
View file

@ -8,10 +8,9 @@
#include "evsel.h"
#include "thread_map.h"
#include "cpumap.h"
#include "tsc.h"
#include "tests.h"
#include "../arch/x86/util/tsc.h"
#define CHECK__(x) { \
while ((x) < 0) { \
pr_debug(#x " failed!\n"); \

25
tools/perf/util/tsc.c Normal file
View file

@ -0,0 +1,25 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include "tsc.h"
u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc)
{
u64 t, quot, rem;
t = ns - tc->time_zero;
quot = t / tc->time_mult;
rem = t % tc->time_mult;
return (quot << tc->time_shift) +
(rem << tc->time_shift) / tc->time_mult;
}
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc)
{
u64 quot, rem;
quot = cyc >> tc->time_shift;
rem = cyc & ((1 << tc->time_shift) - 1);
return tc->time_zero + quot * tc->time_mult +
((rem * tc->time_mult) >> tc->time_shift);
}

11
tools/perf/util/tsc.h Normal file
View file

@ -0,0 +1,11 @@
#ifndef __PERF_TSC_H
#define __PERF_TSC_H
#include <linux/types.h>
#include "../arch/x86/util/tsc.h"
u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
#endif