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note/ram: support multiple noterams to dump data when panic occurs

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When creating a noteram, you can choose whether to dump
this noteram when the system crashes.

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai
2024-12-16 17:54:01 +08:00
committed by GUIDINGLI
parent 7acb0df84f
commit d3460aa111
2 changed files with 20 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/note/noteram_driver.c
+18 -8
View File
@@ -42,6 +42,7 @@
#include <nuttx/kmalloc.h>
#include <nuttx/note/note_driver.h>
#include <nuttx/note/noteram_driver.h>
#include <nuttx/nuttx.h>
#include <nuttx/panic_notifier.h>
#include <nuttx/fs/fs.h>
#include <nuttx/streams.h>
@@ -93,6 +94,7 @@ struct noteram_driver_s
volatile unsigned int ni_read;
spinlock_t lock;
FAR struct pollfd *pfd;
struct notifier_block nb;
};
/* The structure to hold the context data of trace dump */
@@ -1272,19 +1274,20 @@ static void noteram_dump(FAR struct noteram_driver_s *drv)
static int noteram_crash_dump(FAR struct notifier_block *nb,
unsigned long action, FAR void *data)
{
FAR struct noteram_driver_s *drv =
container_of(nb, struct noteram_driver_s, nb);
if (action == PANIC_KERNEL)
{
noteram_dump(&g_noteram_driver);
noteram_dump(drv);
}
return 0;
}
static void noteram_crash_dump_register(void)
static void noteram_crash_dump_register(FAR struct noteram_driver_s *drv)
{
static struct notifier_block nb;
nb.notifier_call = noteram_crash_dump;
panic_notifier_chain_register(&nb);
drv->nb.notifier_call = noteram_crash_dump;
panic_notifier_chain_register(&drv->nb);
}
#endif
@@ -1310,7 +1313,7 @@ static void noteram_crash_dump_register(void)
int noteram_register(void)
{
#ifdef CONFIG_DRIVERS_NOTERAM_CRASH_DUMP
noteram_crash_dump_register();
noteram_crash_dump_register(&g_noteram_driver);
#endif
return register_driver("/dev/note/ram", &g_noteram_fops, 0666,
&g_noteram_driver);
@@ -1334,7 +1337,8 @@ int noteram_register(void)
****************************************************************************/
FAR struct note_driver_s *
noteram_initialize(FAR const char *devpath, size_t bufsize, bool overwrite)
noteram_initialize(FAR const char *devpath, size_t bufsize,
bool overwrite, bool crashdump)
{
FAR struct noteram_driver_s *drv;
#ifdef CONFIG_SCHED_INSTRUMENTATION_FILTER
@@ -1349,8 +1353,8 @@ noteram_initialize(FAR const char *devpath, size_t bufsize, bool overwrite)
{
return NULL;
}
#ifdef CONFIG_SCHED_INSTRUMENTATION_FILTER
#ifdef CONFIG_SCHED_INSTRUMENTATION_FILTER
memcpy(drv + 1, devpath, len);
drv->driver.name = (FAR const char *)(drv + 1);
drv->driver.filter.mode.flag =
@@ -1360,7 +1364,13 @@ noteram_initialize(FAR const char *devpath, size_t bufsize, bool overwrite)
drv->driver.filter.mode.cpuset =
CONFIG_SCHED_INSTRUMENTATION_CPUSET;
# endif
#endif
#ifdef CONFIG_DRIVERS_NOTERAM_CRASH_DUMP
if (crashdump)
{
noteram_crash_dump_register(drv);
}
#endif
drv->driver.ops = &g_noteram_ops;
include/nuttx/note/noteram_driver.h
+2 -1
View File
@@ -112,7 +112,8 @@ extern struct noteram_driver_s g_noteram_driver;
int noteram_register(void);
FAR struct note_driver_s *
noteram_initialize(FAR const char *devpath, size_t bufsize, bool overwrite);
noteram_initialize(FAR const char *devpath, size_t bufsize,
bool overwrite, bool crashdump);
#endif
#endif /* defined(__KERNEL__) || defined(CONFIG_BUILD_FLAT) */