[PATCH v6 5/7] perf util: Create branch.c/.h for common branch functions
Create new util/branch.c and util/branch.h to contain the common branch functions. Such as: branch_type_count(): Count the numbers of branch types branch_type_name() : Return the name of branch type branch_type_stat_display(): Display branch type statistics info branch_type_str(): Construct the branch type string. The branch type is saved in branch_flags. Change log -- v6: Move that multiline conditional code inside {} brackets. Move branch_type_stat_display() from builtin-report.c to branch.c. Move branch_type_str() from callchain.c to branch.c. v5: It's a new patch in v5 patch series. Signed-off-by: Jin Yao--- tools/perf/util/Build| 1 + tools/perf/util/branch.c | 168 +++ tools/perf/util/branch.h | 25 +++ tools/perf/util/event.h | 3 +- 4 files changed, 196 insertions(+), 1 deletion(-) create mode 100644 tools/perf/util/branch.c create mode 100644 tools/perf/util/branch.h diff --git a/tools/perf/util/Build b/tools/perf/util/Build index f0b9e5d..391bf85 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -91,6 +91,7 @@ libperf-y += vsprintf.o libperf-y += drv_configs.o libperf-y += time-utils.o libperf-y += expr-bison.o +libperf-y += branch.o libperf-$(CONFIG_LIBBPF) += bpf-loader.o libperf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o diff --git a/tools/perf/util/branch.c b/tools/perf/util/branch.c new file mode 100644 index 000..4aa56ad --- /dev/null +++ b/tools/perf/util/branch.c @@ -0,0 +1,168 @@ +#include "perf.h" +#include "util/util.h" +#include "util/debug.h" +#include "util/branch.h" + +static bool cross_area(u64 addr1, u64 addr2, int size) +{ + u64 align1, align2; + + align1 = addr1 & ~(size - 1); + align2 = addr2 & ~(size - 1); + + return (align1 != align2) ? true : false; +} + +#define AREA_4K4096 +#define AREA_2M(2 * 1024 * 1024) + +void branch_type_count(struct branch_type_stat *stat, + struct branch_flags *flags, + u64 from, u64 to) +{ + if (flags->type == PERF_BR_NONE || from == 0) + return; + + stat->counts[flags->type]++; + + if (flags->type == PERF_BR_JCC) { + if (to > from) + stat->jcc_fwd++; + else + stat->jcc_bwd++; + } + + if (cross_area(from, to, AREA_2M)) + stat->cross_2m++; + else if (cross_area(from, to, AREA_4K)) + stat->cross_4k++; +} + +const char *branch_type_name(int type) +{ + const char *branch_names[PERF_BR_MAX] = { + "N/A", + "JCC", + "JMP", + "IND_JMP", + "CALL", + "IND_CALL", + "RET", + "SYSCALL", + "SYSRET", + "IRQ", + "INT", + "IRET", + "FAR_BRANCH", + }; + + if (type >= 0 && type < PERF_BR_MAX) + return branch_names[type]; + + return NULL; +} + +void branch_type_stat_display(FILE *fp, struct branch_type_stat *stat) +{ + u64 total = 0; + int i; + + for (i = 0; i < PERF_BR_MAX; i++) + total += stat->counts[i]; + + if (total == 0) + return; + + fprintf(fp, "\n#"); + fprintf(fp, "\n# Branch Statistics:"); + fprintf(fp, "\n#"); + + if (stat->jcc_fwd > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "JCC forward", + 100.0 * (double)stat->jcc_fwd / (double)total); + } + + if (stat->jcc_bwd > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "JCC backward", + 100.0 * (double)stat->jcc_bwd / (double)total); + } + + if (stat->cross_4k > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "CROSS_4K", + 100.0 * (double)stat->cross_4k / (double)total); + } + + if (stat->cross_2m > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "CROSS_2M", + 100.0 * (double)stat->cross_2m / (double)total); + } + + for (i = 0; i < PERF_BR_MAX; i++) { + if (stat->counts[i] > 0) + fprintf(fp, "\n%12s: %5.1f%%", + branch_type_name(i), + 100.0 * + (double)stat->counts[i] / (double)total); + } +} + +static int count_str_printf(int index, const char *str, + char *bf, int bfsize) +{ + int printed; + + printed = scnprintf(bf, bfsize, + "%s%s", + (index) ? " " : " (", str); + + return printed; +} + +int branch_type_str(struct branch_type_stat *stat, + char *bf, int bfsize) +{ + int i, j = 0,
[PATCH v6 5/7] perf util: Create branch.c/.h for common branch functions
Create new util/branch.c and util/branch.h to contain the common branch functions. Such as: branch_type_count(): Count the numbers of branch types branch_type_name() : Return the name of branch type branch_type_stat_display(): Display branch type statistics info branch_type_str(): Construct the branch type string. The branch type is saved in branch_flags. Change log -- v6: Move that multiline conditional code inside {} brackets. Move branch_type_stat_display() from builtin-report.c to branch.c. Move branch_type_str() from callchain.c to branch.c. v5: It's a new patch in v5 patch series. Signed-off-by: Jin Yao --- tools/perf/util/Build| 1 + tools/perf/util/branch.c | 168 +++ tools/perf/util/branch.h | 25 +++ tools/perf/util/event.h | 3 +- 4 files changed, 196 insertions(+), 1 deletion(-) create mode 100644 tools/perf/util/branch.c create mode 100644 tools/perf/util/branch.h diff --git a/tools/perf/util/Build b/tools/perf/util/Build index f0b9e5d..391bf85 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -91,6 +91,7 @@ libperf-y += vsprintf.o libperf-y += drv_configs.o libperf-y += time-utils.o libperf-y += expr-bison.o +libperf-y += branch.o libperf-$(CONFIG_LIBBPF) += bpf-loader.o libperf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o diff --git a/tools/perf/util/branch.c b/tools/perf/util/branch.c new file mode 100644 index 000..4aa56ad --- /dev/null +++ b/tools/perf/util/branch.c @@ -0,0 +1,168 @@ +#include "perf.h" +#include "util/util.h" +#include "util/debug.h" +#include "util/branch.h" + +static bool cross_area(u64 addr1, u64 addr2, int size) +{ + u64 align1, align2; + + align1 = addr1 & ~(size - 1); + align2 = addr2 & ~(size - 1); + + return (align1 != align2) ? true : false; +} + +#define AREA_4K4096 +#define AREA_2M(2 * 1024 * 1024) + +void branch_type_count(struct branch_type_stat *stat, + struct branch_flags *flags, + u64 from, u64 to) +{ + if (flags->type == PERF_BR_NONE || from == 0) + return; + + stat->counts[flags->type]++; + + if (flags->type == PERF_BR_JCC) { + if (to > from) + stat->jcc_fwd++; + else + stat->jcc_bwd++; + } + + if (cross_area(from, to, AREA_2M)) + stat->cross_2m++; + else if (cross_area(from, to, AREA_4K)) + stat->cross_4k++; +} + +const char *branch_type_name(int type) +{ + const char *branch_names[PERF_BR_MAX] = { + "N/A", + "JCC", + "JMP", + "IND_JMP", + "CALL", + "IND_CALL", + "RET", + "SYSCALL", + "SYSRET", + "IRQ", + "INT", + "IRET", + "FAR_BRANCH", + }; + + if (type >= 0 && type < PERF_BR_MAX) + return branch_names[type]; + + return NULL; +} + +void branch_type_stat_display(FILE *fp, struct branch_type_stat *stat) +{ + u64 total = 0; + int i; + + for (i = 0; i < PERF_BR_MAX; i++) + total += stat->counts[i]; + + if (total == 0) + return; + + fprintf(fp, "\n#"); + fprintf(fp, "\n# Branch Statistics:"); + fprintf(fp, "\n#"); + + if (stat->jcc_fwd > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "JCC forward", + 100.0 * (double)stat->jcc_fwd / (double)total); + } + + if (stat->jcc_bwd > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "JCC backward", + 100.0 * (double)stat->jcc_bwd / (double)total); + } + + if (stat->cross_4k > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "CROSS_4K", + 100.0 * (double)stat->cross_4k / (double)total); + } + + if (stat->cross_2m > 0) { + fprintf(fp, "\n%12s: %5.1f%%", + "CROSS_2M", + 100.0 * (double)stat->cross_2m / (double)total); + } + + for (i = 0; i < PERF_BR_MAX; i++) { + if (stat->counts[i] > 0) + fprintf(fp, "\n%12s: %5.1f%%", + branch_type_name(i), + 100.0 * + (double)stat->counts[i] / (double)total); + } +} + +static int count_str_printf(int index, const char *str, + char *bf, int bfsize) +{ + int printed; + + printed = scnprintf(bf, bfsize, + "%s%s", + (index) ? " " : " (", str); + + return printed; +} + +int branch_type_str(struct branch_type_stat *stat, + char *bf, int bfsize) +{ + int i, j = 0, printed = 0; + u64