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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-03-24 16:19:12 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2017-08-02 14:15:04 +0100 |
| commit | da594e3fff398a164c77dd728d9fbfc6880881e6 (patch) | |
| tree | da0d5ea913d5cbaf56aea802c2b65c0ab2d00190 | |
| parent | 309ee04257d473ce87f2c7e99f6d69e933d307e3 (diff) | |
ARM: obtain thread info structure later
Obtain the thread info structure later in the syscall processing, so
that we free up a register for earlier code.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 9abe47a206d9..374c28723547 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -152,7 +152,6 @@ ENTRY(vector_swi) alignment_trap r10, ip, __cr_alignment enable_irq ct_user_exit - get_thread_info tsk /* * Get the system call number. @@ -209,6 +208,7 @@ ENTRY(vector_swi) bic scno, scno, #0xff000000 @ mask off SWI op-code eor scno, scno, #__NR_SYSCALL_BASE @ check OS number #endif + get_thread_info tsk local_restart: ldr r10, [tsk, #TI_FLAGS] @ check for syscall tracing @@ -240,6 +240,7 @@ local_restart: 9001: sub lr, saved_pc, #4 str lr, [sp, #S_PC] + get_thread_info tsk b ret_fast_syscall #endif ENDPROC(vector_swi) |