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qcacld-3.0: Add log in vos_mem_alloc if kzalloc takes more than 3 seconds

Browse source 
qcacld-2.0 to qcacld-3.0 propagation

Sometime the thread sleeps in kzalloc for long time, resulting in
thread stuck.

This change prints time taken by kzalloc, if time taken is more
than 3 seconds.

Change-Id: I027ab2ad4e93f8a02ba9e48e47d7aa3123785a31
CRs-Fixed: 926479
This commit is contained in:
Abhishek Singh 2015-12-03 16:10:39 +05:30 • committed by Satish Singh
commit daff59fc23
1 changed files with 32 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

35
core/cdf/src/cdf_memory.c
View file

@ -36,6 +36,7 @@
#include "cdf_nbuf.h"
#include "cdf_trace.h"
#include "cdf_lock.h"
#include "cdf_mc_timer.h"
#if defined(CONFIG_CNSS)
#include <net/cnss.h>
@ -66,6 +67,7 @@ struct s_cdf_mem_struct {
#endif
/* Preprocessor Definitions and Constants */
#define CDF_GET_MEMORY_TIME_THRESHOLD 3000
/* Type Declarations */
@ -194,6 +196,7 @@ void *cdf_mem_malloc_debug(size_t size, char *fileName, uint32_t lineNum)
void *memPtr = NULL;
uint32_t new_size;
int flags = GFP_KERNEL;
unsigned long time_before_kzalloc;
if (size > (1024 * 1024) || size == 0) {
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_ERROR,
@ -217,8 +220,19 @@ void *cdf_mem_malloc_debug(size_t size, char *fileName, uint32_t lineNum)
flags = GFP_ATOMIC;
new_size = size + sizeof(struct s_cdf_mem_struct) + 8;
time_before_kzalloc = cdf_mc_timer_get_system_time();
memStruct = (struct s_cdf_mem_struct *)kzalloc(new_size, flags);
/**
* If time taken by kmalloc is greater than
* CDF_GET_MEMORY_TIME_THRESHOLD msec
*/
if (cdf_mc_timer_get_system_time() - time_before_kzalloc >=
CDF_GET_MEMORY_TIME_THRESHOLD)
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_ERROR,
"%s: kzalloc took %lu msec for size %zu called from %pS at line %d",
__func__,
cdf_mc_timer_get_system_time() - time_before_kzalloc,
size, (void *)_RET_IP_, lineNum);
if (memStruct != NULL) {
CDF_STATUS cdf_status;
@ -327,6 +341,9 @@ void *cdf_mem_malloc(size_t size)
#ifdef CONFIG_WCNSS_MEM_PRE_ALLOC
void *pmem;
#endif
void *memPtr = NULL;
unsigned long time_before_kzalloc;
if (size > (1024 * 1024) || size == 0) {
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_ERROR,
"%s: called with invalid arg; passed in %zu !!",
@ -346,8 +363,20 @@ void *cdf_mem_malloc(size_t size)
if (in_interrupt() || irqs_disabled() || in_atomic())
flags = GFP_ATOMIC;
return kzalloc(size, flags);
time_before_kzalloc = cdf_mc_timer_get_system_time();
memPtr = kzalloc(size, flags);
/**
* If time taken by kmalloc is greater than
* CDF_GET_MEMORY_TIME_THRESHOLD msec
*/
if (cdf_mc_timer_get_system_time() - time_before_kzalloc >=
CDF_GET_MEMORY_TIME_THRESHOLD)
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_ERROR,
"%s: kzalloc took %lu msec for size %zu called from %pS",
__func__,
cdf_mc_timer_get_system_time() - time_before_kzalloc,
size, (void *)_RET_IP_);
return memPtr;
}
/**