From: Charles Baylis <[email protected]> Add new sort key 'symbol_size' to allow user to sort by symbol size, or (more usefully) display the symbol size using --fields=...,symbol_size.
Signed-off-by: Charles Baylis <[email protected]> --- tools/perf/Documentation/perf-report.txt | 1 + tools/perf/util/hist.h | 1 + tools/perf/util/sort.c | 46 ++++++++++++++++++++++++++++++++ tools/perf/util/sort.h | 1 + 4 files changed, 49 insertions(+) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index f2914f0..d2a8c15 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -76,6 +76,7 @@ OPTIONS - pid: command and tid of the task - dso: name of library or module executed at the time of sample - symbol: name of function executed at the time of sample + - symbol_size: size of function executed at the time of sample - parent: name of function matched to the parent regex filter. Unmatched entries are displayed as "[other]". - cpu: cpu number the task ran at the time of sample diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 28c216e..2e839bf 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -57,6 +57,7 @@ enum hist_column { HISTC_SRCLINE_FROM, HISTC_SRCLINE_TO, HISTC_TRACE, + HISTC_SYM_SIZE, HISTC_NR_COLS, /* Last entry */ }; diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index df622f4..0ad397c 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1396,6 +1396,51 @@ struct sort_entry sort_transaction = { .se_width_idx = HISTC_TRANSACTION, }; +/* --sort symbol_size */ + +static int64_t _sort__sym_size_cmp(struct symbol *sym_l, struct symbol *sym_r) +{ + int64_t size_l = sym_l != NULL ? sym_l->end - sym_l->start : 0; + int64_t size_r = sym_r != NULL ? sym_r->end - sym_r->start : 0; + + return size_l < size_r ? -1 : + size_l == size_r ? 0 : 1; +} + +static int64_t +sort__sym_size_cmp(struct hist_entry *left, struct hist_entry *right) +{ + return _sort__sym_size_cmp(right->ms.sym, left->ms.sym); +} + +static int _hist_entry__sym_size_snprintf(struct symbol *sym, char *bf, + size_t bf_size, unsigned int width) +{ + if (sym) { + int64_t sym_size = sym->end - sym->start; + + return repsep_snprintf(bf, bf_size, "%*lld", width, + (long long)sym_size); + } else { + return repsep_snprintf(bf, bf_size, "%*s", width, + "unknown"); + } +} + +static int hist_entry__sym_size_snprintf(struct hist_entry *he, char *bf, + size_t size, unsigned int width) +{ + return _hist_entry__sym_size_snprintf(he->ms.sym, bf, size, width); +} + +struct sort_entry sort_sym_size = { + .se_header = "Symbol size", + .se_cmp = sort__sym_size_cmp, + .se_snprintf = hist_entry__sym_size_snprintf, + .se_width_idx = HISTC_SYM_SIZE, +}; + + struct sort_dimension { const char *name; struct sort_entry *entry; @@ -1418,6 +1463,7 @@ static struct sort_dimension common_sort_dimensions[] = { DIM(SORT_GLOBAL_WEIGHT, "weight", sort_global_weight), DIM(SORT_TRANSACTION, "transaction", sort_transaction), DIM(SORT_TRACE, "trace", sort_trace), + DIM(SORT_SYM_SIZE, "symbol_size", sort_sym_size), }; #undef DIM diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 7aff317..acb2c57 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -211,6 +211,7 @@ enum sort_type { SORT_GLOBAL_WEIGHT, SORT_TRANSACTION, SORT_TRACE, + SORT_SYM_SIZE, /* branch stack specific sort keys */ __SORT_BRANCH_STACK, -- 2.7.4
