[PATCH 13/23] perf tools: Introduce perf_mem__tlb_scnprintf function

From: Jiri Olsa
Date: Mon Feb 15 2016 - 03:38:31 EST


Move meminfo's tlb display function into mem-events.c
object, so it could be reused later from script code.

Link: http://lkml.kernel.org/n/tip-kdsvxdm3ucwknyvkluwavydh@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/util/mem-events.c | 47 ++++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/mem-events.h | 3 +++
tools/perf/util/sort.c | 44 ++---------------------------------------
3 files changed, 52 insertions(+), 42 deletions(-)

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 92d3bc9914e6..68f6f8e4922a 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -8,6 +8,7 @@
#include <api/fs/fs.h>
#include "mem-events.h"
#include "debug.h"
+#include "symbol.h"

unsigned int perf_mem_events__loads_ldlat = 30;

@@ -117,3 +118,49 @@ int perf_mem_events__init(void)

return found ? 0 : -ENOENT;
}
+
+static const char * const tlb_access[] = {
+ "N/A",
+ "HIT",
+ "MISS",
+ "L1",
+ "L2",
+ "Walker",
+ "Fault",
+};
+
+void perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+{
+ size_t l = 0, i;
+ u64 m = PERF_MEM_TLB_NA;
+ u64 hit, miss;
+
+ sz -= 1; /* -1 for null termination */
+ out[0] = '\0';
+
+ if (mem_info)
+ m = 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 < ARRAY_SIZE(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);
+}
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index 4abf606b256b..1af23966e3fc 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -43,5 +43,8 @@ int perf_mem_events__parse(const char *str);
int perf_mem_events__init(void);

char *perf_mem_events__name(int i);
+
+struct mem_info;
+void perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
#endif /* __PERF_MEM_EVENTS_H */

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 5cb3e13b8f2e..b7834a5a002d 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -6,6 +6,7 @@
#include "evsel.h"
#include "evlist.h"
#include <traceevent/event-parse.h>
+#include "mem-events.h"

regex_t parent_regex;
const char default_parent_pattern[] = "^sys_|^do_page_fault";
@@ -834,53 +835,12 @@ sort__tlb_cmp(struct hist_entry *left, struct hist_entry *right)
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",
-};
-
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 < ARRAY_SIZE(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);

+ perf_mem__tlb_scnprintf(out, sizeof(out), he->mem_info);
return repsep_snprintf(bf, size, "%-*s", width, out);
}

--
2.4.3