From cbfc0f04069a426f3c8b4b35021117f6833df9ca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 6 Mar 2008 16:22:00 +0100 Subject: [ARM] 4852/1: Add timerfd_create, timerfd_settime and timerfd_gettime syscall entries MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Uwe Kleine-König Signed-off-by: Russell King --- arch/arm/kernel/calls.S | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 283e14fff99..95f1c121cb3 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -359,9 +359,11 @@ CALL(sys_kexec_load) CALL(sys_utimensat) CALL(sys_signalfd) -/* 350 */ CALL(sys_ni_syscall) +/* 350 */ CALL(sys_timerfd_create) CALL(sys_eventfd) CALL(sys_fallocate) + CALL(sys_timerfd_settime) + CALL(sys_timerfd_gettime) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted -- cgit v1.2.3 From 84081bd2205efd1e6c7203bc7099b4350839ee39 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Fri, 28 Mar 2008 21:11:47 +0100 Subject: [ARM] 4881/1: print unrecognised processor ID as part of failure message If we fail to boot due to an unsupported processor ID, print the processor ID as part of the failure message. Signed-off-by: Lennert Buytenhek Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/kernel/head-common.S | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S index 50f667febe2..7e9c00a8a41 100644 --- a/arch/arm/kernel/head-common.S +++ b/arch/arm/kernel/head-common.S @@ -75,8 +75,13 @@ __error_p: #ifdef CONFIG_DEBUG_LL adr r0, str_p1 bl printascii + mov r0, r9 + bl printhex8 + adr r0, str_p2 + bl printascii b __error -str_p1: .asciz "\nError: unrecognized/unsupported processor variant.\n" +str_p1: .asciz "\nError: unrecognized/unsupported processor variant (0x" +str_p2: .asciz ").\n" .align #endif -- cgit v1.2.3 From 28fab1a2fd5b1aa92f9ad1adc9e3b8914f89bc74 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 13 Apr 2008 17:47:35 +0100 Subject: [ARM] Fix kernel mode preemption Luc Van Oostenryck reported: The code removed by this patch tested the irq_cpustat_t members __local_irq_count and __local_bh_count but these fields have been removed some time ago: http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=3ab146c93e039dec99fec8d441a8dd046fe510cc Fix this oversight. Acked-by: Bill Gatliff Signed-off-by: Russell King --- arch/arm/kernel/entry-armv.S | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index a46d5b45676..65cef872c5f 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -209,14 +209,12 @@ __irq_svc: irq_handler #ifdef CONFIG_PREEMPT + str r8, [tsk, #TI_PREEMPT] @ restore preempt count ldr r0, [tsk, #TI_FLAGS] @ get flags + teq r8, #0 @ if preempt count != 0 + movne r0, #0 @ force flags to 0 tst r0, #_TIF_NEED_RESCHED blne svc_preempt -preempt_return: - ldr r0, [tsk, #TI_PREEMPT] @ read preempt value - str r8, [tsk, #TI_PREEMPT] @ restore preempt count - teq r0, r7 - strne r0, [r0, -r0] @ bug() #endif ldr r0, [sp, #S_PSR] @ irqs are already disabled msr spsr_cxsf, r0 @@ -230,19 +228,11 @@ preempt_return: #ifdef CONFIG_PREEMPT svc_preempt: - teq r8, #0 @ was preempt count = 0 - ldreq r6, .LCirq_stat - movne pc, lr @ no - ldr r0, [r6, #4] @ local_irq_count - ldr r1, [r6, #8] @ local_bh_count - adds r0, r0, r1 - movne pc, lr - mov r7, #0 @ preempt_schedule_irq - str r7, [tsk, #TI_PREEMPT] @ expects preempt_count == 0 + mov r8, lr 1: bl preempt_schedule_irq @ irq en/disable is done inside ldr r0, [tsk, #TI_FLAGS] @ get new tasks TI_FLAGS tst r0, #_TIF_NEED_RESCHED - beq preempt_return @ go again + moveq pc, r8 @ go again b 1b #endif @@ -326,10 +316,6 @@ __pabt_svc: #endif .LCfp: .word fp_enter -#ifdef CONFIG_PREEMPT -.LCirq_stat: - .word irq_stat -#endif /* * User mode handlers -- cgit v1.2.3