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authorJens Axboe <axboe@kernel.dk>2020-10-03 18:49:22 +0200
committerJens Axboe <axboe@kernel.dk>2020-10-17 23:04:36 +0200
commit3c532798ec96b6c2d77706f04ed1d8b566a805df (patch)
treebe05df113944f53ea7d50cdff8ae95c1941c4161 /arch
parentmm: use limited read-ahead to satisfy read (diff)
downloadlinux-3c532798ec96b6c2d77706f04ed1d8b566a805df.tar.xz
linux-3c532798ec96b6c2d77706f04ed1d8b566a805df.zip
tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume()
All the callers currently do this, clean it up and move the clearing into tracehook_notify_resume() instead. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/kernel/signal.c1
-rw-r--r--arch/arc/kernel/signal.c2
-rw-r--r--arch/arm/kernel/signal.c1
-rw-r--r--arch/arm64/kernel/signal.c1
-rw-r--r--arch/c6x/kernel/signal.c4
-rw-r--r--arch/csky/kernel/signal.c1
-rw-r--r--arch/h8300/kernel/signal.c4
-rw-r--r--arch/hexagon/kernel/process.c1
-rw-r--r--arch/ia64/kernel/process.c2
-rw-r--r--arch/m68k/kernel/signal.c2
-rw-r--r--arch/microblaze/kernel/signal.c2
-rw-r--r--arch/mips/kernel/signal.c1
-rw-r--r--arch/nds32/kernel/signal.c4
-rw-r--r--arch/nios2/kernel/signal.c2
-rw-r--r--arch/openrisc/kernel/signal.c1
-rw-r--r--arch/parisc/kernel/signal.c4
-rw-r--r--arch/powerpc/kernel/signal.c1
-rw-r--r--arch/riscv/kernel/signal.c4
-rw-r--r--arch/s390/kernel/signal.c1
-rw-r--r--arch/sh/kernel/signal_32.c4
-rw-r--r--arch/sparc/kernel/signal_32.c4
-rw-r--r--arch/sparc/kernel/signal_64.c4
-rw-r--r--arch/um/kernel/process.c2
-rw-r--r--arch/xtensa/kernel/signal.c2
24 files changed, 15 insertions, 40 deletions
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 15bc9d1e79f4..3739efce1ec0 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -531,7 +531,6 @@ do_work_pending(struct pt_regs *regs, unsigned long thread_flags,
do_signal(regs, r0, r19);
r0 = 0;
} else {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
}
diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index 8222f8c54690..2be55fb96d87 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -394,6 +394,6 @@ void do_notify_resume(struct pt_regs *regs)
* ASM glue gaurantees that this is only called when returning to
* user mode
*/
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index c1892f733f20..585edbfccf6d 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -669,7 +669,6 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
} else if (thread_flags & _TIF_UPROBE) {
uprobe_notify_resume(regs);
} else {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index bdcaaf091e1e..a8184cad8890 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -946,7 +946,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
do_signal(regs);
if (thread_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
index d05c78eace1b..a3f15b9a79da 100644
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -316,8 +316,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
if (thread_info_flags & (1 << TIF_SIGPENDING))
do_signal(regs, syscall);
- if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & (1 << TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/csky/kernel/signal.c b/arch/csky/kernel/signal.c
index 970895df75ec..8b068cf37447 100644
--- a/arch/csky/kernel/signal.c
+++ b/arch/csky/kernel/signal.c
@@ -261,7 +261,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index 69e68949787f..75d9b7e626b2 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -282,8 +282,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index dfd322c5ce83..5a0a95d93ddb 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -180,7 +180,6 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
}
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
return 1;
}
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index f25f2f723196..6b61a703bcf5 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -176,7 +176,7 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
ia64_do_signal(scr, in_syscall);
}
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+ if (test_thread_flag(TIF_NOTIFY_RESUME)) {
local_irq_enable(); /* force interrupt enable */
tracehook_notify_resume(&scr->pt);
}
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index a98fca977073..29e174a80bf6 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -1134,6 +1134,6 @@ void do_notify_resume(struct pt_regs *regs)
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs);
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 4a96b59f0bee..f11a0ccccabc 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -316,6 +316,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs, in_syscall);
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index f44265025281..50d0515bea21 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -907,7 +907,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/nds32/kernel/signal.c b/arch/nds32/kernel/signal.c
index 36e25a410bb0..2acb94812af9 100644
--- a/arch/nds32/kernel/signal.c
+++ b/arch/nds32/kernel/signal.c
@@ -379,8 +379,6 @@ do_notify_resume(struct pt_regs *regs, unsigned int thread_flags)
if (thread_flags & _TIF_SIGPENDING)
do_signal(regs);
- if (thread_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index d8a087cf2b42..cf2dca2ac7c3 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -317,7 +317,7 @@ asmlinkage int do_notify_resume(struct pt_regs *regs)
*/
return restart;
}
- } else if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ } else if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
return 0;
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index c779364f0cd0..af66f968dd45 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -311,7 +311,6 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
}
syscall = 0;
} else {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
}
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 3c037fc96038..9f43eaeb0b0a 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -606,8 +606,6 @@ void do_notify_resume(struct pt_regs *regs, long in_syscall)
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs, in_syscall);
- if (test_thread_flag(TIF_NOTIFY_RESUME)) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index d15a98c758b8..74a94a125f0d 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -327,7 +327,6 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
}
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index e996e08f1061..bc6841867b51 100644
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
@@ -313,8 +313,6 @@ asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index b295090e2ce6..9e900a8977bd 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -535,7 +535,6 @@ void do_signal(struct pt_regs *regs)
void do_notify_resume(struct pt_regs *regs)
{
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
}
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 4fe3f00137bc..1add47fd31f6 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -502,8 +502,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned int save_r0,
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, save_r0);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
}
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index d0e0025ee3ba..741d0701003a 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -523,10 +523,8 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
{
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
}
asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr,
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index 255264bcb46a..f7ef7edcd5c1 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -551,10 +551,8 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
uprobe_notify_resume(regs);
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- }
user_enter();
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 26b5e243d3fc..3bed09538dd9 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -101,7 +101,7 @@ void interrupt_end(void)
schedule();
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs);
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index b3b17d6c50f0..1fb1047f905c 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -501,6 +501,6 @@ void do_notify_resume(struct pt_regs *regs)
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs);
- if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
}
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