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authorKoen Kooi <koen@openembedded.org>2009-09-03 18:28:37 +0200
committerKoen Kooi <koen@openembedded.org>2009-09-03 18:28:37 +0200
commit19e6e8e30aaf2a791a657d752649865754963ce6 (patch)
tree6553a26bf9c2a67cc861568b91d365febb38290b /recipes/linux/linux-omap-pm-2.6.29
parent7b21597db945fef852e17e54c9d82dd727b6594e (diff)
linux-omap: move ppoll patch to files/ and exchange it with the queued version
Diffstat (limited to 'recipes/linux/linux-omap-pm-2.6.29')
-rw-r--r--recipes/linux/linux-omap-pm-2.6.29/0001-implement-TIF_RESTORE_SIGMASK-support-and-enable-the.patch287
1 files changed, 0 insertions, 287 deletions
diff --git a/recipes/linux/linux-omap-pm-2.6.29/0001-implement-TIF_RESTORE_SIGMASK-support-and-enable-the.patch b/recipes/linux/linux-omap-pm-2.6.29/0001-implement-TIF_RESTORE_SIGMASK-support-and-enable-the.patch
deleted file mode 100644
index 7852f0afdb..0000000000
--- a/recipes/linux/linux-omap-pm-2.6.29/0001-implement-TIF_RESTORE_SIGMASK-support-and-enable-the.patch
+++ /dev/null
@@ -1,287 +0,0 @@
-From 8a7643b09856f4f661403dcedbe0455b3cbeeea9 Mon Sep 17 00:00:00 2001
-From: Steven Newbury <s_j_newbury@yahoo.co.uk>
-Date: Fri, 22 May 2009 14:25:40 +0200
-Subject: [PATCH] implement TIF_RESTORE_SIGMASK support and enable the related
- syscalls:
-
-pselect6
-ppoll
-epoll_pwait
-
-Based on http://www.spinics.net/lists/arm-kernel/msg38114.html
----
- arch/arm/include/asm/thread_info.h | 2 +
- arch/arm/include/asm/unistd.h | 7 ++-
- arch/arm/kernel/calls.S | 6 +-
- arch/arm/kernel/signal.c | 90 +++++++++++++++---------------------
- 4 files changed, 46 insertions(+), 59 deletions(-)
-
-diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
-index 4f88482..2cf0917 100644
---- a/arch/arm/include/asm/thread_info.h
-+++ b/arch/arm/include/asm/thread_info.h
-@@ -136,6 +136,7 @@ extern void vfp_sync_state(struct thread_info *thread);
- #define TIF_SIGPENDING 0
- #define TIF_NEED_RESCHED 1
- #define TIF_SYSCALL_TRACE 8
-+#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */
- #define TIF_POLLING_NRFLAG 16
- #define TIF_USING_IWMMXT 17
- #define TIF_MEMDIE 18
-@@ -144,6 +145,7 @@ extern void vfp_sync_state(struct thread_info *thread);
- #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
- #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
- #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
-+#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
- #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
- #define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT)
- #define _TIF_FREEZE (1 << TIF_FREEZE)
-diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
-index 94cc58e..cd1eaa0 100644
---- a/arch/arm/include/asm/unistd.h
-+++ b/arch/arm/include/asm/unistd.h
-@@ -360,8 +360,8 @@
- #define __NR_readlinkat (__NR_SYSCALL_BASE+332)
- #define __NR_fchmodat (__NR_SYSCALL_BASE+333)
- #define __NR_faccessat (__NR_SYSCALL_BASE+334)
-- /* 335 for pselect6 */
-- /* 336 for ppoll */
-+#define __NR_pselect6 (__NR_SYSCALL_BASE+335)
-+#define __NR_ppoll (__NR_SYSCALL_BASE+336)
- #define __NR_unshare (__NR_SYSCALL_BASE+337)
- #define __NR_set_robust_list (__NR_SYSCALL_BASE+338)
- #define __NR_get_robust_list (__NR_SYSCALL_BASE+339)
-@@ -372,7 +372,7 @@
- #define __NR_vmsplice (__NR_SYSCALL_BASE+343)
- #define __NR_move_pages (__NR_SYSCALL_BASE+344)
- #define __NR_getcpu (__NR_SYSCALL_BASE+345)
-- /* 346 for epoll_pwait */
-+#define __NR_epoll_pwait (__NR_SYSCALL_BASE+346)
- #define __NR_kexec_load (__NR_SYSCALL_BASE+347)
- #define __NR_utimensat (__NR_SYSCALL_BASE+348)
- #define __NR_signalfd (__NR_SYSCALL_BASE+349)
-@@ -430,6 +430,7 @@
- #define __ARCH_WANT_SYS_SIGPENDING
- #define __ARCH_WANT_SYS_SIGPROCMASK
- #define __ARCH_WANT_SYS_RT_SIGACTION
-+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
-
- #if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
- #define __ARCH_WANT_SYS_TIME
-diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
-index 1680e9e..534000d 100644
---- a/arch/arm/kernel/calls.S
-+++ b/arch/arm/kernel/calls.S
-@@ -344,8 +344,8 @@
- CALL(sys_readlinkat)
- CALL(sys_fchmodat)
- CALL(sys_faccessat)
--/* 335 */ CALL(sys_ni_syscall) /* eventually pselect6 */
-- CALL(sys_ni_syscall) /* eventually ppoll */
-+/* 335 */ CALL(sys_pselect6)
-+ CALL(sys_ppoll)
- CALL(sys_unshare)
- CALL(sys_set_robust_list)
- CALL(sys_get_robust_list)
-@@ -355,7 +355,7 @@
- CALL(sys_vmsplice)
- CALL(sys_move_pages)
- /* 345 */ CALL(sys_getcpu)
-- CALL(sys_ni_syscall) /* eventually epoll_pwait */
-+ CALL(sys_epoll_pwait)
- CALL(sys_kexec_load)
- CALL(sys_utimensat)
- CALL(sys_signalfd)
-diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
-index 80b8b5c..7645048 100644
---- a/arch/arm/kernel/signal.c
-+++ b/arch/arm/kernel/signal.c
-@@ -47,57 +47,23 @@ const unsigned long sigreturn_codes[7] = {
- MOV_R7_NR_RT_SIGRETURN, SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN,
- };
-
--static int do_signal(sigset_t *oldset, struct pt_regs * regs, int syscall);
-+static void do_signal(struct pt_regs * regs, int syscall);
-
- /*
- * atomically swap in the new signal mask, and wait for a signal.
- */
--asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask, struct pt_regs *regs)
-+asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
- {
-- sigset_t saveset;
--
- mask &= _BLOCKABLE;
- spin_lock_irq(&current->sighand->siglock);
-- saveset = current->blocked;
-+ current->saved_sigmask = current->blocked;
- siginitset(&current->blocked, mask);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-- regs->ARM_r0 = -EINTR;
--
-- while (1) {
-- current->state = TASK_INTERRUPTIBLE;
-- schedule();
-- if (do_signal(&saveset, regs, 0))
-- return regs->ARM_r0;
-- }
--}
--
--asmlinkage int
--sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
--{
-- sigset_t saveset, newset;
--
-- /* XXX: Don't preclude handling different sized sigset_t's. */
-- if (sigsetsize != sizeof(sigset_t))
-- return -EINVAL;
--
-- if (copy_from_user(&newset, unewset, sizeof(newset)))
-- return -EFAULT;
-- sigdelsetmask(&newset, ~_BLOCKABLE);
--
-- spin_lock_irq(&current->sighand->siglock);
-- saveset = current->blocked;
-- current->blocked = newset;
-- recalc_sigpending();
-- spin_unlock_irq(&current->sighand->siglock);
-- regs->ARM_r0 = -EINTR;
--
-- while (1) {
-- current->state = TASK_INTERRUPTIBLE;
-- schedule();
-- if (do_signal(&saveset, regs, 0))
-- return regs->ARM_r0;
-- }
-+ current->state = TASK_INTERRUPTIBLE;
-+ schedule();
-+ set_thread_flag(TIF_RESTORE_SIGMASK);
-+ return -ERESTARTNOHAND;
- }
-
- asmlinkage int
-@@ -290,7 +256,7 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)
-
- badframe:
- force_sig(SIGSEGV, current);
-- return 0;
-+ return -EFAULT;
- }
-
- asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
-@@ -325,7 +291,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
-
- badframe:
- force_sig(SIGSEGV, current);
-- return 0;
-+ return -EFAULT;
- }
-
- static int
-@@ -541,7 +507,7 @@ static inline void restart_syscall(struct pt_regs *regs)
- /*
- * OK, we're invoking a handler
- */
--static void
-+static int
- handle_signal(unsigned long sig, struct k_sigaction *ka,
- siginfo_t *info, sigset_t *oldset,
- struct pt_regs * regs, int syscall)
-@@ -592,7 +558,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
-
- if (ret != 0) {
- force_sigsegv(sig, tsk);
-- return;
-+ return ret;
- }
-
- /*
-@@ -606,6 +572,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
- recalc_sigpending();
- spin_unlock_irq(&tsk->sighand->siglock);
-
-+ return ret;
- }
-
- /*
-@@ -617,11 +584,12 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
- * the kernel can handle, and then we build all the user-level signal handling
- * stack-frames in one go after that.
- */
--static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
-+static void do_signal(struct pt_regs *regs, int syscall)
- {
- struct k_sigaction ka;
- siginfo_t info;
- int signr;
-+ sigset_t *oldset;
-
- /*
- * We want the common case to go fast, which
-@@ -630,18 +598,29 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
- * if so.
- */
- if (!user_mode(regs))
-- return 0;
-+ return;
-
- if (try_to_freeze())
- goto no_signal;
-
- single_step_clear(current);
-
-+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
-+ oldset = &current->saved_sigmask;
-+ else
-+ oldset = &current->blocked;
-+
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
-- handle_signal(signr, &ka, &info, oldset, regs, syscall);
-+ if (handle_signal(signr, &ka, &info, oldset, regs, syscall) == 0) {
-+ /* a signal was successfully delivered; the saved
-+ * sigmask will have been stored in the signal frame,
-+ * and will be restored by sigreturn, so we can simply
-+ * clear the TIF_RESTORE_SIGMASK flag */
-+ clear_thread_flag(TIF_RESTORE_SIGMASK);
-+ }
- single_step_set(current);
-- return 1;
-+ return;
- }
-
- no_signal:
-@@ -665,7 +644,7 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
- usp = (u32 __user *)regs->ARM_sp;
-
- /*
-- * Either we supports OABI only, or we have
-+ * Either we support OABI only, or we have
- * EABI with the OABI compat layer enabled.
- * In the later case we don't know if user
- * space is EABI or not, and if not we must
-@@ -695,12 +674,17 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
- }
- }
- single_step_set(current);
-- return 0;
-+ /* if there's no signal to deliver, we just put the saved sigmask
-+ back. */
-+ if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-+ clear_thread_flag(TIF_RESTORE_SIGMASK);
-+ sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-+ }
- }
-
- asmlinkage void
- do_notify_resume(struct pt_regs *regs, unsigned int thread_flags, int syscall)
- {
-- if (thread_flags & _TIF_SIGPENDING)
-- do_signal(&current->blocked, regs, syscall);
-+ if (thread_flags & (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK))
-+ do_signal(regs, syscall);
- }
---
-1.6.2.4
-