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segger/sysview: add syscall support

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Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2022-03-08 10:58:44 +08:00 committed by Xiang Xiao
parent 871291477a
commit d6bbe4f6a5
1 changed files with 157 additions and 4 deletions
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155
drivers/segger/note_sysview.c
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@ -47,6 +47,10 @@ struct sysview_s
#ifdef CONFIG_SCHED_INSTRUMENTATION_IRQHANDLER
struct note_filter_irq_s irq_mask;
#endif
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
struct note_filter_syscall_s syscall_mask;
struct note_filter_syscall_s syscall_marker;
#endif
};
/****************************************************************************
@ -155,11 +159,24 @@ static bool sysview_isenabled(void)
}
#endif
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
/* Use the Syscall "0" to identify whether the syscall is enabled,
* if the host tool is closed abnormally, use this bit to clear
* the active set.
*/
if (!enable &&
NOTE_FILTER_SYSCALLMASK_ISSET(0, &g_sysview.syscall_marker))
{
NOTE_FILTER_SYSCALLMASK_ZERO(&g_sysview.syscall_marker);
}
#endif
return enable;
}
/****************************************************************************
* Name: sysview_isenabled_irqhandler
* Name: sysview_isenabled_irq
*
* Description:
* Check whether the interrupt handler instrumentation is enabled.
@ -197,6 +214,44 @@ static bool sysview_isenabled_irq(int irq, bool enter)
}
#endif
/****************************************************************************
* Name: sysview_isenabled_syscall
*
* Description:
* Check whether the syscall instrumentation is enabled.
*
* Input Parameters:
* nr - syscall number
*
* Returned Value:
* True is returned if the instrumentation is enabled.
*
****************************************************************************/
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
static inline int sysview_isenabled_syscall(int nr)
{
#ifdef CONFIG_SCHED_INSTRUMENTATION_FILTER
if (!sysview_isenabled())
{
return false;
}
/* If the syscall trace is disabled or the syscall number is masked,
* do nothing.
*/
if ((g_sysview.mode.flag & NOTE_FILTER_MODE_FLAG_SYSCALL) == 0 ||
NOTE_FILTER_SYSCALLMASK_ISSET(nr, &g_sysview.syscall_mask))
{
return false;
}
#endif
return true;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
@ -310,6 +365,58 @@ void sched_note_irqhandler(int irq, FAR void *handler, bool enter)
}
#endif
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
void sched_note_syscall_enter(int nr, int argc, ...)
{
nr -= CONFIG_SYS_RESERVED;
if (sysview_isenabled_syscall(nr) == 0)
{
return;
}
/* Set the name marker if the current syscall nr is not active */
if (NOTE_FILTER_SYSCALLMASK_ISSET(nr, &g_sysview.syscall_marker) == 0)
{
/* Set the name marker */
SEGGER_SYSVIEW_NameMarker(nr, g_funcnames[nr]);
/* Mark the syscall active */
NOTE_FILTER_SYSCALLMASK_SET(nr, &g_sysview.syscall_marker);
/* Use the Syscall "0" to identify whether the syscall is enabled,
* if the host tool is closed abnormally, use this bit to clear
* the active set.
*/
if (NOTE_FILTER_SYSCALLMASK_ISSET(0, &g_sysview.syscall_marker) == 0)
{
NOTE_FILTER_SYSCALLMASK_SET(0, &g_sysview.syscall_marker);
}
}
SEGGER_SYSVIEW_MarkStart(nr);
}
void sched_note_syscall_leave(int nr, uintptr_t result)
{
nr -= CONFIG_SYS_RESERVED;
if (sysview_isenabled_syscall(nr) == 0)
{
return;
}
if (NOTE_FILTER_SYSCALLMASK_ISSET(nr, &g_sysview.syscall_marker) != 0)
{
SEGGER_SYSVIEW_MarkStop(nr);
}
}
#endif
/****************************************************************************
* Name: sysview_get_interrupt_id
*
@ -490,4 +597,50 @@ void sched_note_filter_irq(struct note_filter_irq_s *oldf,
}
#endif
/****************************************************************************
* Name: sched_note_filter_syscall
*
* Description:
* Set and get syscall filter setting
* (Same as NOTECTL_GETSYSCALLFILTER / NOTECTL_SETSYSCALLFILTER ioctls)
*
* Input Parameters:
* oldf - A writable pointer to struct note_filter_syscall_s to get
* current syscall filter setting
* If 0, no data is written.
* newf - A read-only pointer to struct note_filter_syscall_s of the
* new syscall filter setting
* If 0, the setting is not updated.
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
void sched_note_filter_syscall(struct note_filter_syscall_s *oldf,
struct note_filter_syscall_s *newf)
{
irqstate_t flags;
flags = spin_lock_irqsave(NULL);
if (oldf != NULL)
{
/* Return the current filter setting */
*oldf = g_sysview.syscall_mask;
}
if (newf != NULL)
{
/* Replace the syscall filter mask by the provided setting */
g_sysview.syscall_mask = *newf;
}
spin_unlock_irqrestore(NULL, flags);
}
#endif
#endif /* CONFIG_SCHED_INSTRUMENTATION_FILTER */