mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
524666cb5d
On architectures using the generic syscall entry code the architecture independent syscall work is moved to flags in thread_info::syscall_work. This removes architecture dependencies and frees up TIF bits. Define SYSCALL_WORK_SYSCALL_TRACEPOINT, use it in the generic entry code and convert the code which uses the TIF specific helper functions to use the new *_syscall_work() helpers which either resolve to the new mode for users of the generic entry code or to the TIF based functions for the other architectures. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andy Lutomirski <luto@kernel.org> Link: https://lore.kernel.org/r/20201116174206.2639648-6-krisman@collabora.com
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _TRACE_SYSCALL_H
|
|
#define _TRACE_SYSCALL_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/trace_events.h>
|
|
#include <linux/thread_info.h>
|
|
|
|
#include <asm/ptrace.h>
|
|
|
|
|
|
/*
|
|
* A syscall entry in the ftrace syscalls array.
|
|
*
|
|
* @name: name of the syscall
|
|
* @syscall_nr: number of the syscall
|
|
* @nb_args: number of parameters it takes
|
|
* @types: list of types as strings
|
|
* @args: list of args as strings (args[i] matches types[i])
|
|
* @enter_fields: list of fields for syscall_enter trace event
|
|
* @enter_event: associated syscall_enter trace event
|
|
* @exit_event: associated syscall_exit trace event
|
|
*/
|
|
struct syscall_metadata {
|
|
const char *name;
|
|
int syscall_nr;
|
|
int nb_args;
|
|
const char **types;
|
|
const char **args;
|
|
struct list_head enter_fields;
|
|
|
|
struct trace_event_call *enter_event;
|
|
struct trace_event_call *exit_event;
|
|
};
|
|
|
|
#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
|
|
static inline void syscall_tracepoint_update(struct task_struct *p)
|
|
{
|
|
if (test_syscall_work(SYSCALL_TRACEPOINT))
|
|
set_task_syscall_work(p, SYSCALL_TRACEPOINT);
|
|
else
|
|
clear_task_syscall_work(p, SYSCALL_TRACEPOINT);
|
|
}
|
|
#else
|
|
static inline void syscall_tracepoint_update(struct task_struct *p)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _TRACE_SYSCALL_H */
|