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author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-10-18 01:09:09 +0200 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-10-18 01:12:33 +0200 |
commit | 0f8f86c7bdd1c954fbe153af437a0d91a6c5721a (patch) | |
tree | 94a8d419a470a4f9852ca397bb9bbe48db92ff5c /arch/parisc/kernel/ptrace.c | |
parent | Merge branch 'linus' into tracing/hw-breakpoints (diff) | |
parent | perf tools: Move dereference after NULL test (diff) | |
download | linux-dev-0f8f86c7bdd1c954fbe153af437a0d91a6c5721a.tar.xz linux-dev-0f8f86c7bdd1c954fbe153af437a0d91a6c5721a.zip |
Merge commit 'perf/core' into perf/hw-breakpoint
Conflicts:
kernel/Makefile
kernel/trace/Makefile
kernel/trace/trace.h
samples/Makefile
Merge reason: We need to be uptodate with the perf events development
branch because we plan to rewrite the breakpoints API on top of
perf events.
Diffstat (limited to 'arch/parisc/kernel/ptrace.c')
-rw-r--r-- | arch/parisc/kernel/ptrace.c | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index 927db3668b6f..c4f49e45129d 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -13,6 +13,7 @@ #include <linux/smp.h> #include <linux/errno.h> #include <linux/ptrace.h> +#include <linux/tracehook.h> #include <linux/user.h> #include <linux/personality.h> #include <linux/security.h> @@ -35,7 +36,8 @@ */ void ptrace_disable(struct task_struct *task) { - task->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP); + clear_tsk_thread_flag(task, TIF_SINGLESTEP); + clear_tsk_thread_flag(task, TIF_BLOCKSTEP); /* make sure the trap bits are not set */ pa_psw(task)->r = 0; @@ -55,8 +57,8 @@ void user_disable_single_step(struct task_struct *task) void user_enable_single_step(struct task_struct *task) { - task->ptrace &= ~PT_BLOCKSTEP; - task->ptrace |= PT_SINGLESTEP; + clear_tsk_thread_flag(task, TIF_BLOCKSTEP); + set_tsk_thread_flag(task, TIF_SINGLESTEP); if (pa_psw(task)->n) { struct siginfo si; @@ -98,8 +100,8 @@ void user_enable_single_step(struct task_struct *task) void user_enable_block_step(struct task_struct *task) { - task->ptrace &= ~PT_SINGLESTEP; - task->ptrace |= PT_BLOCKSTEP; + clear_tsk_thread_flag(task, TIF_SINGLESTEP); + set_tsk_thread_flag(task, TIF_BLOCKSTEP); /* Enable taken branch trap. */ pa_psw(task)->r = 0; @@ -263,22 +265,20 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } #endif +long do_syscall_trace_enter(struct pt_regs *regs) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE) && + tracehook_report_syscall_entry(regs)) + return -1L; + + return regs->gr[20]; +} -void syscall_trace(void) +void do_syscall_trace_exit(struct pt_regs *regs) { - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } + int stepping = test_thread_flag(TIF_SINGLESTEP) || + test_thread_flag(TIF_BLOCKSTEP); + + if (stepping || test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(regs, stepping); } |