fix a kmap leak in virtio_console

[linux/fpc-iii.git] / tools / perf / util / sort.c

#include "sort.h"
#include "hist.h"
#include "comm.h"
#include "symbol.h"

regex_t         parent_regex;
const char      default_parent_pattern[] = "^sys_|^do_page_fault";
const char      *parent_pattern = default_parent_pattern;
const char      default_sort_order[] = "comm,dso,symbol";
const char      *sort_order = default_sort_order;
regex_t         ignore_callees_regex;
int             have_ignore_callees = 0;
int             sort__need_collapse = 0;
int             sort__has_parent = 0;
int             sort__has_sym = 0;
int             sort__has_dso = 0;
enum sort_mode  sort__mode = SORT_MODE__NORMAL;

enum sort_type  sort__first_dimension;

LIST_HEAD(hist_entry__sort_list);

static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
{
        int n;
        va_list ap;

        va_start(ap, fmt);
        n = vsnprintf(bf, size, fmt, ap);
        if (symbol_conf.field_sep && n > 0) {
                char *sep = bf;

                while (1) {
                        sep = strchr(sep, *symbol_conf.field_sep);
                        if (sep == NULL)
                                break;
                        *sep = '.';
                }
        }
        va_end(ap);

        if (n >= (int)size)
                return size - 1;
        return n;
}

static int64_t cmp_null(const void *l, const void *r)
{
        if (!l && !r)
                return 0;
        else if (!l)
                return -1;
        else
                return 1;
}

/* --sort pid */

static int64_t
sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return right->thread->tid - left->thread->tid;
}

static int hist_entry__thread_snprintf(struct hist_entry *he, char *bf,
                                       size_t size, unsigned int width)
{
        const char *comm = thread__comm_str(he->thread);
        return repsep_snprintf(bf, size, "%*s:%5d", width - 6,
                               comm ?: "", he->thread->tid);
}

struct sort_entry sort_thread = {
        .se_header      = "Command:  Pid",
        .se_cmp         = sort__thread_cmp,
        .se_snprintf    = hist_entry__thread_snprintf,
        .se_width_idx   = HISTC_THREAD,
};

/* --sort comm */

static int64_t
sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
{
        /* Compare the addr that should be unique among comm */
        return comm__str(right->comm) - comm__str(left->comm);
}

static int64_t
sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
{
        /* Compare the addr that should be unique among comm */
        return comm__str(right->comm) - comm__str(left->comm);
}

static int hist_entry__comm_snprintf(struct hist_entry *he, char *bf,
                                     size_t size, unsigned int width)
{
        return repsep_snprintf(bf, size, "%*s", width, comm__str(he->comm));
}

struct sort_entry sort_comm = {
        .se_header      = "Command",
        .se_cmp         = sort__comm_cmp,
        .se_collapse    = sort__comm_collapse,
        .se_snprintf    = hist_entry__comm_snprintf,
        .se_width_idx   = HISTC_COMM,
};

/* --sort dso */

static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
{
        struct dso *dso_l = map_l ? map_l->dso : NULL;
        struct dso *dso_r = map_r ? map_r->dso : NULL;
        const char *dso_name_l, *dso_name_r;

        if (!dso_l || !dso_r)
                return cmp_null(dso_l, dso_r);

        if (verbose) {
                dso_name_l = dso_l->long_name;
                dso_name_r = dso_r->long_name;
        } else {
                dso_name_l = dso_l->short_name;
                dso_name_r = dso_r->short_name;
        }

        return strcmp(dso_name_l, dso_name_r);
}

static int64_t
sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return _sort__dso_cmp(left->ms.map, right->ms.map);
}

static int _hist_entry__dso_snprintf(struct map *map, char *bf,
                                     size_t size, unsigned int width)
{
        if (map && map->dso) {
                const char *dso_name = !verbose ? map->dso->short_name :
                        map->dso->long_name;
                return repsep_snprintf(bf, size, "%-*s", width, dso_name);
        }

        return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
}

static int hist_entry__dso_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        return _hist_entry__dso_snprintf(he->ms.map, bf, size, width);
}

struct sort_entry sort_dso = {
        .se_header      = "Shared Object",
        .se_cmp         = sort__dso_cmp,
        .se_snprintf    = hist_entry__dso_snprintf,
        .se_width_idx   = HISTC_DSO,
};

/* --sort symbol */

static int64_t _sort__addr_cmp(u64 left_ip, u64 right_ip)
{
        return (int64_t)(right_ip - left_ip);
}

static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r)
{
        u64 ip_l, ip_r;

        if (!sym_l || !sym_r)
                return cmp_null(sym_l, sym_r);

        if (sym_l == sym_r)
                return 0;

        ip_l = sym_l->start;
        ip_r = sym_r->start;

        return (int64_t)(ip_r - ip_l);
}

static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
        int64_t ret;

        if (!left->ms.sym && !right->ms.sym)
                return _sort__addr_cmp(left->ip, right->ip);

        /*
         * comparing symbol address alone is not enough since it's a
         * relative address within a dso.
         */
        if (!sort__has_dso) {
                ret = sort__dso_cmp(left, right);
                if (ret != 0)
                        return ret;
        }

        return _sort__sym_cmp(left->ms.sym, right->ms.sym);
}

static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym,
                                     u64 ip, char level, char *bf, size_t size,
                                     unsigned int width)
{
        size_t ret = 0;

        if (verbose) {
                char o = map ? dso__symtab_origin(map->dso) : '!';
                ret += repsep_snprintf(bf, size, "%-#*llx %c ",
                                       BITS_PER_LONG / 4 + 2, ip, o);
        }

        ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", level);
        if (sym && map) {
                if (map->type == MAP__VARIABLE) {
                        ret += repsep_snprintf(bf + ret, size - ret, "%s", sym->name);
                        ret += repsep_snprintf(bf + ret, size - ret, "+0x%llx",
                                        ip - map->unmap_ip(map, sym->start));
                        ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
                                       width - ret, "");
                } else {
                        ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
                                               width - ret,
                                               sym->name);
                }
        } else {
                size_t len = BITS_PER_LONG / 4;
                ret += repsep_snprintf(bf + ret, size - ret, "%-#.*llx",
                                       len, ip);
                ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
                                       width - ret, "");
        }

        return ret;
}

static int hist_entry__sym_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        return _hist_entry__sym_snprintf(he->ms.map, he->ms.sym, he->ip,
                                         he->level, bf, size, width);
}

struct sort_entry sort_sym = {
        .se_header      = "Symbol",
        .se_cmp         = sort__sym_cmp,
        .se_snprintf    = hist_entry__sym_snprintf,
        .se_width_idx   = HISTC_SYMBOL,
};

/* --sort srcline */

static int64_t
sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
{
        if (!left->srcline) {
                if (!left->ms.map)
                        left->srcline = SRCLINE_UNKNOWN;
                else {
                        struct map *map = left->ms.map;
                        left->srcline = get_srcline(map->dso,
                                            map__rip_2objdump(map, left->ip));
                }
        }
        if (!right->srcline) {
                if (!right->ms.map)
                        right->srcline = SRCLINE_UNKNOWN;
                else {
                        struct map *map = right->ms.map;
                        right->srcline = get_srcline(map->dso,
                                            map__rip_2objdump(map, right->ip));
                }
        }
        return strcmp(left->srcline, right->srcline);
}

static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf,
                                        size_t size,
                                        unsigned int width __maybe_unused)
{
        return repsep_snprintf(bf, size, "%s", he->srcline);
}

struct sort_entry sort_srcline = {
        .se_header      = "Source:Line",
        .se_cmp         = sort__srcline_cmp,
        .se_snprintf    = hist_entry__srcline_snprintf,
        .se_width_idx   = HISTC_SRCLINE,
};

/* --sort parent */

static int64_t
sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
{
        struct symbol *sym_l = left->parent;
        struct symbol *sym_r = right->parent;

        if (!sym_l || !sym_r)
                return cmp_null(sym_l, sym_r);

        return strcmp(sym_l->name, sym_r->name);
}

static int hist_entry__parent_snprintf(struct hist_entry *he, char *bf,
                                       size_t size, unsigned int width)
{
        return repsep_snprintf(bf, size, "%-*s", width,
                              he->parent ? he->parent->name : "[other]");
}

struct sort_entry sort_parent = {
        .se_header      = "Parent symbol",
        .se_cmp         = sort__parent_cmp,
        .se_snprintf    = hist_entry__parent_snprintf,
        .se_width_idx   = HISTC_PARENT,
};

/* --sort cpu */

static int64_t
sort__cpu_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return right->cpu - left->cpu;
}

static int hist_entry__cpu_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        return repsep_snprintf(bf, size, "%*d", width, he->cpu);
}

struct sort_entry sort_cpu = {
        .se_header      = "CPU",
        .se_cmp         = sort__cpu_cmp,
        .se_snprintf    = hist_entry__cpu_snprintf,
        .se_width_idx   = HISTC_CPU,
};

/* sort keys for branch stacks */

static int64_t
sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return _sort__dso_cmp(left->branch_info->from.map,
                              right->branch_info->from.map);
}

static int hist_entry__dso_from_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        return _hist_entry__dso_snprintf(he->branch_info->from.map,
                                         bf, size, width);
}

static int64_t
sort__dso_to_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return _sort__dso_cmp(left->branch_info->to.map,
                              right->branch_info->to.map);
}

static int hist_entry__dso_to_snprintf(struct hist_entry *he, char *bf,
                                       size_t size, unsigned int width)
{
        return _hist_entry__dso_snprintf(he->branch_info->to.map,
                                         bf, size, width);
}

static int64_t
sort__sym_from_cmp(struct hist_entry *left, struct hist_entry *right)
{
        struct addr_map_symbol *from_l = &left->branch_info->from;
        struct addr_map_symbol *from_r = &right->branch_info->from;

        if (!from_l->sym && !from_r->sym)
                return _sort__addr_cmp(from_l->addr, from_r->addr);

        return _sort__sym_cmp(from_l->sym, from_r->sym);
}

static int64_t
sort__sym_to_cmp(struct hist_entry *left, struct hist_entry *right)
{
        struct addr_map_symbol *to_l = &left->branch_info->to;
        struct addr_map_symbol *to_r = &right->branch_info->to;

        if (!to_l->sym && !to_r->sym)
                return _sort__addr_cmp(to_l->addr, to_r->addr);

        return _sort__sym_cmp(to_l->sym, to_r->sym);
}

static int hist_entry__sym_from_snprintf(struct hist_entry *he, char *bf,
                                         size_t size, unsigned int width)
{
        struct addr_map_symbol *from = &he->branch_info->from;
        return _hist_entry__sym_snprintf(from->map, from->sym, from->addr,
                                         he->level, bf, size, width);

}

static int hist_entry__sym_to_snprintf(struct hist_entry *he, char *bf,
                                       size_t size, unsigned int width)
{
        struct addr_map_symbol *to = &he->branch_info->to;
        return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
                                         he->level, bf, size, width);

}

struct sort_entry sort_dso_from = {
        .se_header      = "Source Shared Object",
        .se_cmp         = sort__dso_from_cmp,
        .se_snprintf    = hist_entry__dso_from_snprintf,
        .se_width_idx   = HISTC_DSO_FROM,
};

struct sort_entry sort_dso_to = {
        .se_header      = "Target Shared Object",
        .se_cmp         = sort__dso_to_cmp,
        .se_snprintf    = hist_entry__dso_to_snprintf,
        .se_width_idx   = HISTC_DSO_TO,
};

struct sort_entry sort_sym_from = {
        .se_header      = "Source Symbol",
        .se_cmp         = sort__sym_from_cmp,
        .se_snprintf    = hist_entry__sym_from_snprintf,
        .se_width_idx   = HISTC_SYMBOL_FROM,
};

struct sort_entry sort_sym_to = {
        .se_header      = "Target Symbol",
        .se_cmp         = sort__sym_to_cmp,
        .se_snprintf    = hist_entry__sym_to_snprintf,
        .se_width_idx   = HISTC_SYMBOL_TO,
};

static int64_t
sort__mispredict_cmp(struct hist_entry *left, struct hist_entry *right)
{
        const unsigned char mp = left->branch_info->flags.mispred !=
                                        right->branch_info->flags.mispred;
        const unsigned char p = left->branch_info->flags.predicted !=
                                        right->branch_info->flags.predicted;

        return mp || p;
}

static int hist_entry__mispredict_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width){
        static const char *out = "N/A";

        if (he->branch_info->flags.predicted)
                out = "N";
        else if (he->branch_info->flags.mispred)
                out = "Y";

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

/* --sort daddr_sym */
static int64_t
sort__daddr_cmp(struct hist_entry *left, struct hist_entry *right)
{
        uint64_t l = 0, r = 0;

        if (left->mem_info)
                l = left->mem_info->daddr.addr;
        if (right->mem_info)
                r = right->mem_info->daddr.addr;

        return (int64_t)(r - l);
}

static int hist_entry__daddr_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        uint64_t addr = 0;
        struct map *map = NULL;
        struct symbol *sym = NULL;

        if (he->mem_info) {
                addr = he->mem_info->daddr.addr;
                map = he->mem_info->daddr.map;
                sym = he->mem_info->daddr.sym;
        }
        return _hist_entry__sym_snprintf(map, sym, addr, he->level, bf, size,
                                         width);
}

static int64_t
sort__dso_daddr_cmp(struct hist_entry *left, struct hist_entry *right)
{
        struct map *map_l = NULL;
        struct map *map_r = NULL;

        if (left->mem_info)
                map_l = left->mem_info->daddr.map;
        if (right->mem_info)
                map_r = right->mem_info->daddr.map;

        return _sort__dso_cmp(map_l, map_r);
}

static int hist_entry__dso_daddr_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        struct map *map = NULL;

        if (he->mem_info)
                map = he->mem_info->daddr.map;

        return _hist_entry__dso_snprintf(map, bf, size, width);
}

static int64_t
sort__locked_cmp(struct hist_entry *left, struct hist_entry *right)
{
        union perf_mem_data_src data_src_l;
        union perf_mem_data_src data_src_r;

        if (left->mem_info)
                data_src_l = left->mem_info->data_src;
        else
                data_src_l.mem_lock = PERF_MEM_LOCK_NA;

        if (right->mem_info)
                data_src_r = right->mem_info->data_src;
        else
                data_src_r.mem_lock = PERF_MEM_LOCK_NA;

        return (int64_t)(data_src_r.mem_lock - data_src_l.mem_lock);
}

static int hist_entry__locked_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        const char *out;
        u64 mask = PERF_MEM_LOCK_NA;

        if (he->mem_info)
                mask = he->mem_info->data_src.mem_lock;

        if (mask & PERF_MEM_LOCK_NA)
                out = "N/A";
        else if (mask & PERF_MEM_LOCK_LOCKED)
                out = "Yes";
        else
                out = "No";

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

static int64_t
sort__tlb_cmp(struct hist_entry *left, struct hist_entry *right)
{
        union perf_mem_data_src data_src_l;
        union perf_mem_data_src data_src_r;

        if (left->mem_info)
                data_src_l = left->mem_info->data_src;
        else
                data_src_l.mem_dtlb = PERF_MEM_TLB_NA;

        if (right->mem_info)
                data_src_r = right->mem_info->data_src;
        else
                data_src_r.mem_dtlb = PERF_MEM_TLB_NA;

        return (int64_t)(data_src_r.mem_dtlb - data_src_l.mem_dtlb);
}

static const char * const tlb_access[] = {
        "N/A",
        "HIT",
        "MISS",
        "L1",
        "L2",
        "Walker",
        "Fault",
};
#define NUM_TLB_ACCESS (sizeof(tlb_access)/sizeof(const char *))

static int hist_entry__tlb_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        char out[64];
        size_t sz = sizeof(out) - 1; /* -1 for null termination */
        size_t l = 0, i;
        u64 m = PERF_MEM_TLB_NA;
        u64 hit, miss;

        out[0] = '\0';

        if (he->mem_info)
                m = he->mem_info->data_src.mem_dtlb;

        hit = m & PERF_MEM_TLB_HIT;
        miss = m & PERF_MEM_TLB_MISS;

        /* already taken care of */
        m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);

        for (i = 0; m && i < NUM_TLB_ACCESS; i++, m >>= 1) {
                if (!(m & 0x1))
                        continue;
                if (l) {
                        strcat(out, " or ");
                        l += 4;
                }
                strncat(out, tlb_access[i], sz - l);
                l += strlen(tlb_access[i]);
        }
        if (*out == '\0')
                strcpy(out, "N/A");
        if (hit)
                strncat(out, " hit", sz - l);
        if (miss)
                strncat(out, " miss", sz - l);

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

static int64_t
sort__lvl_cmp(struct hist_entry *left, struct hist_entry *right)
{
        union perf_mem_data_src data_src_l;
        union perf_mem_data_src data_src_r;

        if (left->mem_info)
                data_src_l = left->mem_info->data_src;
        else
                data_src_l.mem_lvl = PERF_MEM_LVL_NA;

        if (right->mem_info)
                data_src_r = right->mem_info->data_src;
        else
                data_src_r.mem_lvl = PERF_MEM_LVL_NA;

        return (int64_t)(data_src_r.mem_lvl - data_src_l.mem_lvl);
}

static const char * const mem_lvl[] = {
        "N/A",
        "HIT",
        "MISS",
        "L1",
        "LFB",
        "L2",
        "L3",
        "Local RAM",
        "Remote RAM (1 hop)",
        "Remote RAM (2 hops)",
        "Remote Cache (1 hop)",
        "Remote Cache (2 hops)",
        "I/O",
        "Uncached",
};
#define NUM_MEM_LVL (sizeof(mem_lvl)/sizeof(const char *))

static int hist_entry__lvl_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        char out[64];
        size_t sz = sizeof(out) - 1; /* -1 for null termination */
        size_t i, l = 0;
        u64 m =  PERF_MEM_LVL_NA;
        u64 hit, miss;

        if (he->mem_info)
                m  = he->mem_info->data_src.mem_lvl;

        out[0] = '\0';

        hit = m & PERF_MEM_LVL_HIT;
        miss = m & PERF_MEM_LVL_MISS;

        /* already taken care of */
        m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);

        for (i = 0; m && i < NUM_MEM_LVL; i++, m >>= 1) {
                if (!(m & 0x1))
                        continue;
                if (l) {
                        strcat(out, " or ");
                        l += 4;
                }
                strncat(out, mem_lvl[i], sz - l);
                l += strlen(mem_lvl[i]);
        }
        if (*out == '\0')
                strcpy(out, "N/A");
        if (hit)
                strncat(out, " hit", sz - l);
        if (miss)
                strncat(out, " miss", sz - l);

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

static int64_t
sort__snoop_cmp(struct hist_entry *left, struct hist_entry *right)
{
        union perf_mem_data_src data_src_l;
        union perf_mem_data_src data_src_r;

        if (left->mem_info)
                data_src_l = left->mem_info->data_src;
        else
                data_src_l.mem_snoop = PERF_MEM_SNOOP_NA;

        if (right->mem_info)
                data_src_r = right->mem_info->data_src;
        else
                data_src_r.mem_snoop = PERF_MEM_SNOOP_NA;

        return (int64_t)(data_src_r.mem_snoop - data_src_l.mem_snoop);
}

static const char * const snoop_access[] = {
        "N/A",
        "None",
        "Miss",
        "Hit",
        "HitM",
};
#define NUM_SNOOP_ACCESS (sizeof(snoop_access)/sizeof(const char *))

static int hist_entry__snoop_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        char out[64];
        size_t sz = sizeof(out) - 1; /* -1 for null termination */
        size_t i, l = 0;
        u64 m = PERF_MEM_SNOOP_NA;

        out[0] = '\0';

        if (he->mem_info)
                m = he->mem_info->data_src.mem_snoop;

        for (i = 0; m && i < NUM_SNOOP_ACCESS; i++, m >>= 1) {
                if (!(m & 0x1))
                        continue;
                if (l) {
                        strcat(out, " or ");
                        l += 4;
                }
                strncat(out, snoop_access[i], sz - l);
                l += strlen(snoop_access[i]);
        }

        if (*out == '\0')
                strcpy(out, "N/A");

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

struct sort_entry sort_mispredict = {
        .se_header      = "Branch Mispredicted",
        .se_cmp         = sort__mispredict_cmp,
        .se_snprintf    = hist_entry__mispredict_snprintf,
        .se_width_idx   = HISTC_MISPREDICT,
};

static u64 he_weight(struct hist_entry *he)
{
        return he->stat.nr_events ? he->stat.weight / he->stat.nr_events : 0;
}

static int64_t
sort__local_weight_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return he_weight(left) - he_weight(right);
}

static int hist_entry__local_weight_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        return repsep_snprintf(bf, size, "%-*llu", width, he_weight(he));
}

struct sort_entry sort_local_weight = {
        .se_header      = "Local Weight",
        .se_cmp         = sort__local_weight_cmp,
        .se_snprintf    = hist_entry__local_weight_snprintf,
        .se_width_idx   = HISTC_LOCAL_WEIGHT,
};

static int64_t
sort__global_weight_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return left->stat.weight - right->stat.weight;
}

static int hist_entry__global_weight_snprintf(struct hist_entry *he, char *bf,
                                              size_t size, unsigned int width)
{
        return repsep_snprintf(bf, size, "%-*llu", width, he->stat.weight);
}

struct sort_entry sort_global_weight = {
        .se_header      = "Weight",
        .se_cmp         = sort__global_weight_cmp,
        .se_snprintf    = hist_entry__global_weight_snprintf,
        .se_width_idx   = HISTC_GLOBAL_WEIGHT,
};

struct sort_entry sort_mem_daddr_sym = {
        .se_header      = "Data Symbol",
        .se_cmp         = sort__daddr_cmp,
        .se_snprintf    = hist_entry__daddr_snprintf,
        .se_width_idx   = HISTC_MEM_DADDR_SYMBOL,
};

struct sort_entry sort_mem_daddr_dso = {
        .se_header      = "Data Object",
        .se_cmp         = sort__dso_daddr_cmp,
        .se_snprintf    = hist_entry__dso_daddr_snprintf,
        .se_width_idx   = HISTC_MEM_DADDR_SYMBOL,
};

struct sort_entry sort_mem_locked = {
        .se_header      = "Locked",
        .se_cmp         = sort__locked_cmp,
        .se_snprintf    = hist_entry__locked_snprintf,
        .se_width_idx   = HISTC_MEM_LOCKED,
};

struct sort_entry sort_mem_tlb = {
        .se_header      = "TLB access",
        .se_cmp         = sort__tlb_cmp,
        .se_snprintf    = hist_entry__tlb_snprintf,
        .se_width_idx   = HISTC_MEM_TLB,
};

struct sort_entry sort_mem_lvl = {
        .se_header      = "Memory access",
        .se_cmp         = sort__lvl_cmp,
        .se_snprintf    = hist_entry__lvl_snprintf,
        .se_width_idx   = HISTC_MEM_LVL,
};

struct sort_entry sort_mem_snoop = {
        .se_header      = "Snoop",
        .se_cmp         = sort__snoop_cmp,
        .se_snprintf    = hist_entry__snoop_snprintf,
        .se_width_idx   = HISTC_MEM_SNOOP,
};

static int64_t
sort__abort_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return left->branch_info->flags.abort !=
                right->branch_info->flags.abort;
}

static int hist_entry__abort_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        static const char *out = ".";

        if (he->branch_info->flags.abort)
                out = "A";
        return repsep_snprintf(bf, size, "%-*s", width, out);
}

struct sort_entry sort_abort = {
        .se_header      = "Transaction abort",
        .se_cmp         = sort__abort_cmp,
        .se_snprintf    = hist_entry__abort_snprintf,
        .se_width_idx   = HISTC_ABORT,
};

static int64_t
sort__in_tx_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return left->branch_info->flags.in_tx !=
                right->branch_info->flags.in_tx;
}

static int hist_entry__in_tx_snprintf(struct hist_entry *he, char *bf,
                                    size_t size, unsigned int width)
{
        static const char *out = ".";

        if (he->branch_info->flags.in_tx)
                out = "T";

        return repsep_snprintf(bf, size, "%-*s", width, out);
}

struct sort_entry sort_in_tx = {
        .se_header      = "Branch in transaction",
        .se_cmp         = sort__in_tx_cmp,
        .se_snprintf    = hist_entry__in_tx_snprintf,
        .se_width_idx   = HISTC_IN_TX,
};

static int64_t
sort__transaction_cmp(struct hist_entry *left, struct hist_entry *right)
{
        return left->transaction - right->transaction;
}

static inline char *add_str(char *p, const char *str)
{
        strcpy(p, str);
        return p + strlen(str);
}

static struct txbit {
        unsigned flag;
        const char *name;
        int skip_for_len;
} txbits[] = {
        { PERF_TXN_ELISION,        "EL ",        0 },
        { PERF_TXN_TRANSACTION,    "TX ",        1 },
        { PERF_TXN_SYNC,           "SYNC ",      1 },
        { PERF_TXN_ASYNC,          "ASYNC ",     0 },
        { PERF_TXN_RETRY,          "RETRY ",     0 },
        { PERF_TXN_CONFLICT,       "CON ",       0 },
        { PERF_TXN_CAPACITY_WRITE, "CAP-WRITE ", 1 },
        { PERF_TXN_CAPACITY_READ,  "CAP-READ ",  0 },
        { 0, NULL, 0 }
};

int hist_entry__transaction_len(void)
{
        int i;
        int len = 0;

        for (i = 0; txbits[i].name; i++) {
                if (!txbits[i].skip_for_len)
                        len += strlen(txbits[i].name);
        }
        len += 4; /* :XX<space> */
        return len;
}

static int hist_entry__transaction_snprintf(struct hist_entry *he, char *bf,
                                            size_t size, unsigned int width)
{
        u64 t = he->transaction;
        char buf[128];
        char *p = buf;
        int i;

        buf[0] = 0;
        for (i = 0; txbits[i].name; i++)
                if (txbits[i].flag & t)
                        p = add_str(p, txbits[i].name);
        if (t && !(t & (PERF_TXN_SYNC|PERF_TXN_ASYNC)))
                p = add_str(p, "NEITHER ");
        if (t & PERF_TXN_ABORT_MASK) {
                sprintf(p, ":%" PRIx64,
                        (t & PERF_TXN_ABORT_MASK) >>
                        PERF_TXN_ABORT_SHIFT);
                p += strlen(p);
        }

        return repsep_snprintf(bf, size, "%-*s", width, buf);
}

struct sort_entry sort_transaction = {
        .se_header      = "Transaction                ",
        .se_cmp         = sort__transaction_cmp,
        .se_snprintf    = hist_entry__transaction_snprintf,
        .se_width_idx   = HISTC_TRANSACTION,
};

struct sort_dimension {
        const char              *name;
        struct sort_entry       *entry;
        int                     taken;
};

#define DIM(d, n, func) [d] = { .name = n, .entry = &(func) }

static struct sort_dimension common_sort_dimensions[] = {
        DIM(SORT_PID, "pid", sort_thread),
        DIM(SORT_COMM, "comm", sort_comm),
        DIM(SORT_DSO, "dso", sort_dso),
        DIM(SORT_SYM, "symbol", sort_sym),
        DIM(SORT_PARENT, "parent", sort_parent),
        DIM(SORT_CPU, "cpu", sort_cpu),
        DIM(SORT_SRCLINE, "srcline", sort_srcline),
        DIM(SORT_LOCAL_WEIGHT, "local_weight", sort_local_weight),
        DIM(SORT_GLOBAL_WEIGHT, "weight", sort_global_weight),
        DIM(SORT_TRANSACTION, "transaction", sort_transaction),
};

#undef DIM

#define DIM(d, n, func) [d - __SORT_BRANCH_STACK] = { .name = n, .entry = &(func) }

static struct sort_dimension bstack_sort_dimensions[] = {
        DIM(SORT_DSO_FROM, "dso_from", sort_dso_from),
        DIM(SORT_DSO_TO, "dso_to", sort_dso_to),
        DIM(SORT_SYM_FROM, "symbol_from", sort_sym_from),
        DIM(SORT_SYM_TO, "symbol_to", sort_sym_to),
        DIM(SORT_MISPREDICT, "mispredict", sort_mispredict),
        DIM(SORT_IN_TX, "in_tx", sort_in_tx),
        DIM(SORT_ABORT, "abort", sort_abort),
};

#undef DIM

#define DIM(d, n, func) [d - __SORT_MEMORY_MODE] = { .name = n, .entry = &(func) }

static struct sort_dimension memory_sort_dimensions[] = {
        DIM(SORT_MEM_DADDR_SYMBOL, "symbol_daddr", sort_mem_daddr_sym),
        DIM(SORT_MEM_DADDR_DSO, "dso_daddr", sort_mem_daddr_dso),
        DIM(SORT_MEM_LOCKED, "locked", sort_mem_locked),
        DIM(SORT_MEM_TLB, "tlb", sort_mem_tlb),
        DIM(SORT_MEM_LVL, "mem", sort_mem_lvl),
        DIM(SORT_MEM_SNOOP, "snoop", sort_mem_snoop),
};

#undef DIM

static void __sort_dimension__add(struct sort_dimension *sd, enum sort_type idx)
{
        if (sd->taken)
                return;

        if (sd->entry->se_collapse)
                sort__need_collapse = 1;

        if (list_empty(&hist_entry__sort_list))
                sort__first_dimension = idx;

        list_add_tail(&sd->entry->list, &hist_entry__sort_list);
        sd->taken = 1;
}

int sort_dimension__add(const char *tok)
{
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(common_sort_dimensions); i++) {
                struct sort_dimension *sd = &common_sort_dimensions[i];

                if (strncasecmp(tok, sd->name, strlen(tok)))
                        continue;

                if (sd->entry == &sort_parent) {
                        int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
                        if (ret) {
                                char err[BUFSIZ];

                                regerror(ret, &parent_regex, err, sizeof(err));
                                pr_err("Invalid regex: %s\n%s", parent_pattern, err);
                                return -EINVAL;
                        }
                        sort__has_parent = 1;
                } else if (sd->entry == &sort_sym) {
                        sort__has_sym = 1;
                } else if (sd->entry == &sort_dso) {
                        sort__has_dso = 1;
                }

                __sort_dimension__add(sd, i);
                return 0;
        }

        for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++) {
                struct sort_dimension *sd = &bstack_sort_dimensions[i];

                if (strncasecmp(tok, sd->name, strlen(tok)))
                        continue;

                if (sort__mode != SORT_MODE__BRANCH)
                        return -EINVAL;

                if (sd->entry == &sort_sym_from || sd->entry == &sort_sym_to)
                        sort__has_sym = 1;

                __sort_dimension__add(sd, i + __SORT_BRANCH_STACK);
                return 0;
        }

        for (i = 0; i < ARRAY_SIZE(memory_sort_dimensions); i++) {
                struct sort_dimension *sd = &memory_sort_dimensions[i];

                if (strncasecmp(tok, sd->name, strlen(tok)))
                        continue;

                if (sort__mode != SORT_MODE__MEMORY)
                        return -EINVAL;

                if (sd->entry == &sort_mem_daddr_sym)
                        sort__has_sym = 1;

                __sort_dimension__add(sd, i + __SORT_MEMORY_MODE);
                return 0;
        }

        return -ESRCH;
}

int setup_sorting(void)
{
        char *tmp, *tok, *str = strdup(sort_order);
        int ret = 0;

        if (str == NULL) {
                error("Not enough memory to setup sort keys");
                return -ENOMEM;
        }

        for (tok = strtok_r(str, ", ", &tmp);
                        tok; tok = strtok_r(NULL, ", ", &tmp)) {
                ret = sort_dimension__add(tok);
                if (ret == -EINVAL) {
                        error("Invalid --sort key: `%s'", tok);
                        break;
                } else if (ret == -ESRCH) {
                        error("Unknown --sort key: `%s'", tok);
                        break;
                }
        }

        free(str);
        return ret;
}

static void sort_entry__setup_elide(struct sort_entry *se,
                                    struct strlist *list,
                                    const char *list_name, FILE *fp)
{
        if (list && strlist__nr_entries(list) == 1) {
                if (fp != NULL)
                        fprintf(fp, "# %s: %s\n", list_name,
                                strlist__entry(list, 0)->s);
                se->elide = true;
        }
}

void sort__setup_elide(FILE *output)
{
        struct sort_entry *se;

        sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                "dso", output);
        sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list,
                                "comm", output);
        sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list,
                                "symbol", output);

        if (sort__mode == SORT_MODE__BRANCH) {
                sort_entry__setup_elide(&sort_dso_from,
                                        symbol_conf.dso_from_list,
                                        "dso_from", output);
                sort_entry__setup_elide(&sort_dso_to,
                                        symbol_conf.dso_to_list,
                                        "dso_to", output);
                sort_entry__setup_elide(&sort_sym_from,
                                        symbol_conf.sym_from_list,
                                        "sym_from", output);
                sort_entry__setup_elide(&sort_sym_to,
                                        symbol_conf.sym_to_list,
                                        "sym_to", output);
        } else if (sort__mode == SORT_MODE__MEMORY) {
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "symbol_daddr", output);
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "dso_daddr", output);
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "mem", output);
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "local_weight", output);
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "tlb", output);
                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
                                        "snoop", output);
        }

        /*
         * It makes no sense to elide all of sort entries.
         * Just revert them to show up again.
         */
        list_for_each_entry(se, &hist_entry__sort_list, list) {
                if (!se->elide)
                        return;
        }

        list_for_each_entry(se, &hist_entry__sort_list, list)
                se->elide = false;
}