/* * Created by: Jason Wessel * * Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved. * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #ifndef _DEBUG_CORE_H_ #define _DEBUG_CORE_H_ /* * These are the private implementation headers between the kernel * debugger core and the debugger front end code. */ /* kernel debug core data structures */ struct kgdb_state { int ex_vector; int signo; int err_code; int cpu; int pass_exception; unsigned long thr_query; unsigned long threadid; long kgdb_usethreadid; struct pt_regs *linux_regs; atomic_t *send_ready; }; /* Exception state values */ #define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */ #define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */ #define DCPU_IS_SLAVE 0x4 /* Slave cpu enter exception */ #define DCPU_SSTEP 0x8 /* CPU is single stepping */ struct debuggerinfo_struct { void *debuggerinfo; struct task_struct *task; int exception_state; int ret_state; int irq_depth; int enter_kgdb; }; extern struct debuggerinfo_struct kgdb_info[]; /* kernel debug core break point routines */ extern int dbg_remove_all_break(void); extern int dbg_set_sw_break(unsigned long addr); extern int dbg_remove_sw_break(unsigned long addr); extern int dbg_activate_sw_breakpoints(void); extern int dbg_deactivate_sw_breakpoints(void); /* polled character access to i/o module */ extern int dbg_io_get_char(void); /* stub return value for switching between the gdbstub and kdb */ #define DBG_PASS_EVENT -12345 /* Switch from one cpu to another */ #define DBG_SWITCH_CPU_EVENT -123456 extern int dbg_switch_cpu; /* gdbstub interface functions */ extern int gdb_serial_stub(struct kgdb_state *ks); extern void gdbstub_msg_write(const char *s, int len); /* gdbstub functions used for kdb <-> gdbstub transition */ extern int gdbstub_state(struct kgdb_state *ks, char *cmd); extern int dbg_kdb_mode; #ifdef CONFIG_KGDB_KDB extern int kdb_stub(struct kgdb_state *ks); extern int kdb_parse(const char *cmdstr); extern int kdb_common_init_state(struct kgdb_state *ks); extern int kdb_common_deinit_state(void); #else /* ! CONFIG_KGDB_KDB */ static inline int kdb_stub(struct kgdb_state *ks) { return DBG_PASS_EVENT; } #endif /* CONFIG_KGDB_KDB */ #endif /* _DEBUG_CORE_H_ */ den' name='id2' value='d0e287a401d9acf67b75180b26e2d62b7d482652'/>

path: root/sound/soc/codecs/lm49453.c

diff options

Diffstat (limited to 'sound/soc/codecs/lm49453.c')

y='diffstat' class='diffstat'>it/sound/soc/samsung/lowland.c?h=nds-private-remove&id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)

tree	370efda701f03cccf21e02bb1fdd3b852547d75c /sound/soc/samsung/lowland.c
parent	0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)

tracing: Fix hwlat kthread migration

The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Diffstat (limited to 'sound/soc/samsung/lowland.c')