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authorGabriel Krisman Bertazi <krisman@collabora.com>2020-11-16 12:42:02 -0500
committerThomas Gleixner <tglx@linutronix.de>2020-11-16 21:53:16 +0100
commit64c19ba29b66e98af9306b4a7525fb22c895d252 (patch)
treee0cfa090f940f33e7bde807308506a14852b8dde /kernel/entry
parent524666cb5de7c38a1925e7401a6e59d68682dd8c (diff)
downloadlinux-64c19ba29b66e98af9306b4a7525fb22c895d252.tar.bz2
ptrace: Migrate to use SYSCALL_TRACE flag
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_TRACE, 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/20201116174206.2639648-7-krisman@collabora.com
Diffstat (limited to 'kernel/entry')
-rw-r--r--kernel/entry/common.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/entry/common.c b/kernel/entry/common.c
index f651967847ec..917328a9edaa 100644
--- a/kernel/entry/common.c
+++ b/kernel/entry/common.c
@@ -47,7 +47,7 @@ static long syscall_trace_enter(struct pt_regs *regs, long syscall,
long ret = 0;
/* Handle ptrace */
- if (ti_work & (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU)) {
+ if (work & SYSCALL_WORK_SYSCALL_TRACE || ti_work & _TIF_SYSCALL_EMU) {
ret = arch_syscall_enter_tracehook(regs);
if (ret || (ti_work & _TIF_SYSCALL_EMU))
return -1L;
@@ -237,7 +237,7 @@ static void syscall_exit_work(struct pt_regs *regs, unsigned long ti_work,
trace_sys_exit(regs, syscall_get_return_value(current, regs));
step = report_single_step(ti_work);
- if (step || ti_work & _TIF_SYSCALL_TRACE)
+ if (step || work & SYSCALL_WORK_SYSCALL_TRACE)
arch_syscall_exit_tracehook(regs, step);
}