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authorDave Barach <dave@barachs.net>2019-06-15 12:46:13 -0400
committerDave Barach <dave@barachs.net>2019-06-16 10:24:43 -0400
commitd67a428b3b2183cd78d7fca82e8afe2f26387810 (patch)
treef5209028aa2cfb222f35bb0c970685b8d2d777d8
parentc898a4f5bae84148ddec462a9510dee99e3da67d (diff)
vlib: add "memory-trace stats-segment"
Type: feature Change-Id: Ie020fd7e2618284a63efbeb9895068f27c0fb9ab Signed-off-by: Dave Barach <dave@barachs.net>
-rw-r--r--src/vlib/cli.c187
-rw-r--r--src/vppinfra/dlmalloc.c29
-rw-r--r--src/vppinfra/dlmalloc.h5
-rw-r--r--src/vppinfra/mem.h2
-rw-r--r--src/vppinfra/mem_dlmalloc.c31
-rw-r--r--src/vppinfra/mem_mheap.c6
6 files changed, 199 insertions, 61 deletions
diff --git a/src/vlib/cli.c b/src/vlib/cli.c
index 6d83e2a3ce3..bf0670da1c9 100644
--- a/src/vlib/cli.c
+++ b/src/vlib/cli.c
@@ -44,6 +44,8 @@
#include <unistd.h>
#include <ctype.h>
+static void *current_traced_heap;
+
/* Root of all show commands. */
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_show_command, static) = {
@@ -556,6 +558,14 @@ vlib_cli_dispatch_sub_commands (vlib_main_t * vm,
unformat_vlib_cli_sub_input, &sub_input))
{
u8 *leak_report;
+ if (current_traced_heap)
+ {
+ void *oldheap;
+ oldheap = clib_mem_set_heap (current_traced_heap);
+ clib_mem_trace (0);
+ clib_mem_set_heap (oldheap);
+ current_traced_heap = 0;
+ }
clib_mem_trace (1);
error =
vlib_cli_dispatch_sub_commands (vm, cm, &sub_input,
@@ -775,15 +785,36 @@ vlib_cli_output (vlib_main_t * vm, char *fmt, ...)
}
void *vl_msg_push_heap (void) __attribute__ ((weak));
+void *
+vl_msg_push_heap (void)
+{
+ return 0;
+}
+
void vl_msg_pop_heap (void *oldheap) __attribute__ ((weak));
+void
+vl_msg_pop_heap (void *oldheap)
+{
+}
+
+void *vlib_stats_push_heap (void *) __attribute__ ((weak));
+void *
+vlib_stats_push_heap (void *notused)
+{
+ return 0;
+}
static clib_error_t *
show_memory_usage (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
- int verbose __attribute__ ((unused)) = 0, api_segment = 0;
+ int verbose __attribute__ ((unused)) = 0;
+ int api_segment = 0, stats_segment = 0, main_heap = 0;
clib_error_t *error;
u32 index = 0;
+ uword clib_mem_trace_enable_disable (uword enable);
+ uword was_enabled;
+
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
@@ -791,6 +822,10 @@ show_memory_usage (vlib_main_t * vm,
verbose = 1;
else if (unformat (input, "api-segment"))
api_segment = 1;
+ else if (unformat (input, "stats-segment"))
+ stats_segment = 1;
+ else if (unformat (input, "main-heap"))
+ main_heap = 1;
else
{
error = clib_error_return (0, "unknown input `%U'",
@@ -799,9 +834,14 @@ show_memory_usage (vlib_main_t * vm,
}
}
+ if ((api_segment + stats_segment + main_heap) == 0)
+ return clib_error_return
+ (0, "Please supply one of api-segment, stats-segment or main-heap");
+
if (api_segment)
{
void *oldheap = vl_msg_push_heap ();
+ was_enabled = clib_mem_trace_enable_disable (0);
u8 *s_in_svm =
format (0, "%U\n", format_mheap, clib_mem_get_heap (), 1);
vl_msg_pop_heap (oldheap);
@@ -809,10 +849,31 @@ show_memory_usage (vlib_main_t * vm,
oldheap = vl_msg_push_heap ();
vec_free (s_in_svm);
+ clib_mem_trace_enable_disable (was_enabled);
vl_msg_pop_heap (oldheap);
- vlib_cli_output (vm, "API segment start:");
+ vlib_cli_output (vm, "API segment");
+ vlib_cli_output (vm, "%v", s);
+ vec_free (s);
+ }
+ if (stats_segment)
+ {
+ void *oldheap = vlib_stats_push_heap (0);
+ was_enabled = clib_mem_trace_enable_disable (0);
+ u8 *s_in_svm =
+ format (0, "%U\n", format_mheap, clib_mem_get_heap (), 1);
+ if (oldheap)
+ clib_mem_set_heap (oldheap);
+ u8 *s = vec_dup (s_in_svm);
+
+ oldheap = vlib_stats_push_heap (0);
+ vec_free (s_in_svm);
+ if (oldheap)
+ {
+ clib_mem_trace_enable_disable (was_enabled);
+ clib_mem_set_heap (oldheap);
+ }
+ vlib_cli_output (vm, "Stats segment");
vlib_cli_output (vm, "%v", s);
- vlib_cli_output (vm, "API segment end:");
vec_free (s);
}
@@ -833,36 +894,37 @@ show_memory_usage (vlib_main_t * vm,
/* *INDENT-ON* */
#else
{
- uword clib_mem_trace_enable_disable (uword enable);
- uword was_enabled;
-
- /*
- * Note: the foreach_vlib_main cause allocator traffic,
- * so shut off tracing before we go there...
- */
- was_enabled = clib_mem_trace_enable_disable (0);
-
- /* *INDENT-OFF* */
- foreach_vlib_main (
- ({
- struct dlmallinfo mi;
- void *mspace;
- mspace = clib_per_cpu_mheaps[index];
+ if (main_heap)
+ {
+ /*
+ * Note: the foreach_vlib_main causes allocator traffic,
+ * so shut off tracing before we go there...
+ */
+ was_enabled = clib_mem_trace_enable_disable (0);
- mi = mspace_mallinfo (mspace);
- vlib_cli_output (vm, "%sThread %d %s\n", index ? "\n":"", index,
- vlib_worker_threads[index].name);
- vlib_cli_output (vm, " %U\n", format_page_map,
- pointer_to_uword (mspace_least_addr(mspace)),
- mi.arena);
- vlib_cli_output (vm, " %U\n", format_mheap, clib_per_cpu_mheaps[index],
- verbose);
- index++;
- }));
- /* *INDENT-ON* */
+ /* *INDENT-OFF* */
+ foreach_vlib_main (
+ ({
+ struct dlmallinfo mi;
+ void *mspace;
+ mspace = clib_per_cpu_mheaps[index];
+
+ mi = mspace_mallinfo (mspace);
+ vlib_cli_output (vm, "%sThread %d %s\n", index ? "\n":"", index,
+ vlib_worker_threads[index].name);
+ vlib_cli_output (vm, " %U\n", format_page_map,
+ pointer_to_uword (mspace_least_addr(mspace)),
+ mi.arena);
+ vlib_cli_output (vm, " %U\n", format_mheap,
+ clib_per_cpu_mheaps[index],
+ verbose);
+ index++;
+ }));
+ /* *INDENT-ON* */
- /* Restore the trace flag */
- clib_mem_trace_enable_disable (was_enabled);
+ /* Restore the trace flag */
+ clib_mem_trace_enable_disable (was_enabled);
+ }
}
#endif /* USE_DLMALLOC */
return 0;
@@ -871,7 +933,7 @@ show_memory_usage (vlib_main_t * vm,
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_memory_usage_command, static) = {
.path = "show memory",
- .short_help = "[verbose | api-segment] Show current memory usage",
+ .short_help = "show memory [api-segment][stats-segment][verbose]",
.function = show_memory_usage,
};
/* *INDENT-ON* */
@@ -907,7 +969,6 @@ VLIB_CLI_COMMAND (show_cpu_command, static) = {
.short_help = "Show cpu information",
.function = show_cpu,
};
-
/* *INDENT-ON* */
static clib_error_t *
@@ -916,11 +977,12 @@ enable_disable_memory_trace (vlib_main_t * vm,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- int enable;
+ int enable = 1;
int api_segment = 0;
+ int stats_segment = 0;
+ int main_heap = 0;
void *oldheap;
-
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
@@ -930,6 +992,10 @@ enable_disable_memory_trace (vlib_main_t * vm,
;
else if (unformat (line_input, "api-segment"))
api_segment = 1;
+ else if (unformat (line_input, "stats-segment"))
+ stats_segment = 1;
+ else if (unformat (line_input, "main-heap"))
+ main_heap = 1;
else
{
unformat_free (line_input);
@@ -938,11 +1004,52 @@ enable_disable_memory_trace (vlib_main_t * vm,
}
unformat_free (line_input);
+ if ((api_segment + stats_segment + main_heap + (enable == 0)) == 0)
+ {
+ return clib_error_return
+ (0, "Need one of main-heap, stats-segment or api-segment");
+ }
+
+ /* Turn off current trace, if any */
+ if (current_traced_heap)
+ {
+ void *oldheap;
+ oldheap = clib_mem_set_heap (current_traced_heap);
+ clib_mem_trace (0);
+ clib_mem_set_heap (oldheap);
+ current_traced_heap = 0;
+ }
+
+ if (enable == 0)
+ return 0;
+
+ /* API segment */
if (api_segment)
- oldheap = vl_msg_push_heap ();
- clib_mem_trace (enable);
- if (api_segment)
- vl_msg_pop_heap (oldheap);
+ {
+ oldheap = vl_msg_push_heap ();
+ current_traced_heap = clib_mem_get_heap ();
+ clib_mem_trace (1);
+ vl_msg_pop_heap (oldheap);
+
+ }
+
+ /* Stats segment */
+ if (stats_segment)
+ {
+ oldheap = vlib_stats_push_heap (0);
+ current_traced_heap = clib_mem_get_heap ();
+ clib_mem_trace (stats_segment);
+ /* We don't want to call vlib_stats_pop_heap... */
+ if (oldheap)
+ clib_mem_set_heap (oldheap);
+ }
+
+ /* main_heap */
+ if (main_heap)
+ {
+ current_traced_heap = clib_mem_get_heap ();
+ clib_mem_trace (main_heap);
+ }
return 0;
}
@@ -950,7 +1057,7 @@ enable_disable_memory_trace (vlib_main_t * vm,
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (enable_disable_memory_trace_command, static) = {
.path = "memory-trace",
- .short_help = "on|off [api-segment] Enable/disable memory allocation trace",
+ .short_help = "memory-trace on|off [api-segment][stats-segment][main-heap]\n",
.function = enable_disable_memory_trace,
};
/* *INDENT-ON* */
diff --git a/src/vppinfra/dlmalloc.c b/src/vppinfra/dlmalloc.c
index 60bd8d55646..524c57b210b 100644
--- a/src/vppinfra/dlmalloc.c
+++ b/src/vppinfra/dlmalloc.c
@@ -4093,7 +4093,7 @@ void mspace_get_address_and_size (mspace msp, char **addrp, size_t *sizep)
{
mstate ms;
msegment *this_seg;
-
+
ms = (mstate)msp;
this_seg = &ms->seg;
@@ -4155,9 +4155,18 @@ int mspace_enable_disable_trace (mspace msp, int enable)
return (was_enabled);
}
-void* mspace_get_aligned (mspace msp,
+int mspace_is_traced (mspace msp)
+{
+ mstate ms = (mstate)msp;
+
+ if (use_trace(ms))
+ return 1;
+ return 0;
+}
+
+void* mspace_get_aligned (mspace msp,
unsigned long n_user_data_bytes,
- unsigned long align,
+ unsigned long align,
unsigned long align_offset) {
char *rv;
unsigned long searchp;
@@ -4165,13 +4174,13 @@ void* mspace_get_aligned (mspace msp,
mstate ms = (mstate)msp;
/*
- * Allocate space for the "Where's Waldo?" pointer
+ * Allocate space for the "Where's Waldo?" pointer
* the base of the dlmalloc object
*/
n_user_data_bytes += sizeof(unsigned);
- /*
- * Alignment requests less than the size of an mmx vector are ignored
+ /*
+ * Alignment requests less than the size of an mmx vector are ignored
*/
if (align < sizeof (uword)) {
rv = mspace_malloc (msp, n_user_data_bytes);
@@ -4181,7 +4190,7 @@ void* mspace_get_aligned (mspace msp,
if (use_trace(ms)) {
mchunkptr p = mem2chunk(rv);
size_t psize = chunksize(p);
-
+
mheap_get_trace ((unsigned long)rv + sizeof (unsigned), psize);
}
@@ -4196,15 +4205,15 @@ void* mspace_get_aligned (mspace msp,
* Alignment requests greater than 4K must be at offset zero,
* and must be freed using mspace_free_no_offset - or never freed -
* since the "Where's Waldo?" pointer would waste too much space.
- *
- * Waldo is the address of the chunk of memory returned by mspace_malloc,
+ *
+ * Waldo is the address of the chunk of memory returned by mspace_malloc,
* which we need later to call mspace_free...
*/
if (align > 4<<10 || align_offset == ~0UL) {
n_user_data_bytes -= sizeof(unsigned);
assert(align_offset == 0);
rv = internal_memalign(ms, (size_t)align, n_user_data_bytes);
-
+
/* Trace the allocation */
if (rv && use_trace(ms)) {
mchunkptr p = mem2chunk(rv);
diff --git a/src/vppinfra/dlmalloc.h b/src/vppinfra/dlmalloc.h
index 216df4737ca..b8adf74831d 100644
--- a/src/vppinfra/dlmalloc.h
+++ b/src/vppinfra/dlmalloc.h
@@ -1447,9 +1447,9 @@ DLMALLOC_EXPORT int mspace_trim(mspace msp, size_t pad);
*/
DLMALLOC_EXPORT int mspace_mallopt(int, int);
-DLMALLOC_EXPORT void* mspace_get_aligned (mspace msp,
+DLMALLOC_EXPORT void* mspace_get_aligned (mspace msp,
unsigned long n_user_data_bytes,
- unsigned long align,
+ unsigned long align,
unsigned long align_offset);
DLMALLOC_EXPORT int mspace_is_heap_object (mspace msp, void *p);
@@ -1463,6 +1463,7 @@ DLMALLOC_EXPORT void *mspace_least_addr (mspace msp);
DLMALLOC_EXPORT void mheap_get_trace (uword offset, uword size);
DLMALLOC_EXPORT void mheap_put_trace (uword offset, uword size);
DLMALLOC_EXPORT int mspace_enable_disable_trace (mspace msp, int enable);
+DLMALLOC_EXPORT int mspace_is_traced (mspace msp);
#endif /* MSPACES */
diff --git a/src/vppinfra/mem.h b/src/vppinfra/mem.h
index 1e14698af98..e31ec82e7c5 100644
--- a/src/vppinfra/mem.h
+++ b/src/vppinfra/mem.h
@@ -274,6 +274,8 @@ void clib_mem_validate (void);
void clib_mem_trace (int enable);
+int clib_mem_is_traced (void);
+
typedef struct
{
/* Total number of objects allocated. */
diff --git a/src/vppinfra/mem_dlmalloc.c b/src/vppinfra/mem_dlmalloc.c
index e83e0e89d21..99f1c04f3eb 100644
--- a/src/vppinfra/mem_dlmalloc.c
+++ b/src/vppinfra/mem_dlmalloc.c
@@ -56,6 +56,10 @@ typedef struct
/* Hash table mapping mheap offset to trace index. */
uword *trace_index_by_offset;
+
+ /* So we can easily shut off current segment trace, if any */
+ void *current_traced_mheap;
+
} mheap_trace_main_t;
mheap_trace_main_t mheap_trace_main;
@@ -69,7 +73,7 @@ mheap_get_trace (uword offset, uword size)
mheap_trace_t trace;
uword save_enabled;
- if (tm->enabled == 0)
+ if (tm->enabled == 0 || (clib_mem_get_heap () != tm->current_traced_mheap))
return;
/* Spurious Coverity warnings be gone. */
@@ -80,11 +84,6 @@ mheap_get_trace (uword offset, uword size)
if (n_callers == 0)
return;
- /* $$$ This looks like dreck to remove... */
- if (0)
- for (i = n_callers; i < ARRAY_LEN (trace.callers); i++)
- trace.callers[i] = 0;
-
clib_spinlock_lock (&tm->lock);
/* Turn off tracing to avoid embarrassment... */
@@ -291,7 +290,8 @@ format_mheap_trace (u8 * s, va_list * va)
int i;
clib_spinlock_lock (&tm->lock);
- if (vec_len (tm->traces) > 0)
+ if (vec_len (tm->traces) > 0 &&
+ clib_mem_get_heap () == tm->current_traced_mheap)
{
have_traces = 1;
@@ -372,7 +372,8 @@ format_mheap (u8 * s, va_list * va)
format (s, "\n max total allocated %U", format_msize, mi.usmblks);
}
- s = format (s, "\n%U", format_mheap_trace, tm, verbose);
+ if (mspace_is_traced (heap))
+ s = format (s, "\n%U", format_mheap_trace, tm, verbose);
return s;
}
@@ -404,9 +405,21 @@ void
clib_mem_trace (int enable)
{
mheap_trace_main_t *tm = &mheap_trace_main;
+ void *current_heap = clib_mem_get_heap ();
tm->enabled = enable;
- mheap_trace (clib_mem_get_heap (), enable);
+ mheap_trace (current_heap, enable);
+
+ if (enable)
+ tm->current_traced_mheap = current_heap;
+ else
+ tm->current_traced_mheap = 0;
+}
+
+int
+clib_mem_is_traced (void)
+{
+ return mspace_is_traced (clib_mem_get_heap ());
}
uword
diff --git a/src/vppinfra/mem_mheap.c b/src/vppinfra/mem_mheap.c
index 4077bf279fd..3046bd22d0a 100644
--- a/src/vppinfra/mem_mheap.c
+++ b/src/vppinfra/mem_mheap.c
@@ -148,6 +148,12 @@ clib_mem_trace (int enable)
mheap_trace (clib_mem_get_heap (), enable);
}
+int
+clib_mem_is_traced (void)
+{
+ return mheap_is_traced (clib_mem_get_heap ());
+}
+
/*
* fd.io coding-style-patch-verification: ON
*