litmus-rt.git - The LITMUS^RT kernel.

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author	Keshava Munegowda <keshava_mgowda@ti.com>	2010-11-21 12:53:40 -0500
committer	Anand Gadiyar <gadiyar@ti.com>	2010-11-30 16:02:01 -0500
commit	c072604115ab50d023eb5c33d4f3229400e441f4 (patch)
tree	d4ab8ddd939386b0f236362671494cd243689114 /drivers/usb/class/usbtmc.c
parent	6dba39e278b81665a838f37a75fe37b89f3ce610 (diff)

usb: ehci-omap: don't hard-code TLL channel count

Make the TLL channel count a parameter instead of a hardcoded value. This allows us to be flexible with future OMAP revisions which could have a different number of channels. Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com> Signed-off-by: Anand Gadiyar <gadiyar@ti.com>

Diffstat (limited to 'drivers/usb/class/usbtmc.c')

0 files changed, 0 insertions, 0 deletions

/* * Ftrace header. For implementation details beyond the random comments * scattered below, see: Documentation/trace/ftrace-design.txt */ #ifndef _LINUX_FTRACE_H #define _LINUX_FTRACE_H #include <linux/trace_clock.h> #include <linux/kallsyms.h> #include <linux/linkage.h> #include <linux/bitops.h> #include <linux/module.h> #include <linux/ktime.h> #include <linux/sched.h> #include <linux/types.h> #include <linux/init.h> #include <linux/fs.h> #include <asm/ftrace.h> #ifdef CONFIG_FUNCTION_TRACER extern int ftrace_enabled; extern int ftrace_enable_sysctl(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip); struct ftrace_ops { ftrace_func_t func; struct ftrace_ops *next; }; extern int function_trace_stop; /* * Type of the current tracing. */ enum ftrace_tracing_type_t { FTRACE_TYPE_ENTER = 0, /* Hook the call of the function */ FTRACE_TYPE_RETURN, /* Hook the return of the function */ }; /* Current tracing type, default is FTRACE_TYPE_ENTER */ extern enum ftrace_tracing_type_t ftrace_tracing_type; /** * ftrace_stop - stop function tracer. * * A quick way to stop the function tracer. Note this an on off switch, * it is not something that is recursive like preempt_disable. * This does not disable the calling of mcount, it only stops the * calling of functions from mcount. */ static inline void ftrace_stop(void) { function_trace_stop = 1; } /** * ftrace_start - start the function tracer. * * This function is the inverse of ftrace_stop. This does not enable * the function tracing if the function tracer is disabled. This only * sets the function tracer flag to continue calling the functions * from mcount. */ static inline void ftrace_start(void) { function_trace_stop = 0; } /* * The ftrace_ops must be a static and should also * be read_mostly. These functions do modify read_mostly variables * so use them sparely. Never free an ftrace_op or modify the * next pointer after it has been registered. Even after unregistering * it, the next pointer may still be used internally. */ int register_ftrace_function(struct ftrace_ops *ops); int unregister_ftrace_function(struct ftrace_ops *ops); void clear_ftrace_function(void); extern void ftrace_stub(unsigned long a0, unsigned long a1); #else /* !CONFIG_FUNCTION_TRACER */ /* * (un)register_ftrace_function must be a macro since the ops parameter * must not be evaluated. */ #define register_ftrace_function(ops) ({ 0; }) #define unregister_ftrace_function(ops) ({ 0; }) static inline void clear_ftrace_function(void) { } static inline void ftrace_kill(void) { } static inline void ftrace_stop(void) { } static inline void ftrace_start(void) { } #endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_STACK_TRACER extern int stack_tracer_enabled; int stack_trace_sysctl(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); #endif struct ftrace_func_command { struct list_head list; char *name; int (*func)(char *func, char *cmd, char *params, int enable); }; #ifdef CONFIG_DYNAMIC_FTRACE int ftrace_arch_code_modify_prepare(void); int ftrace_arch_code_modify_post_process(void); struct seq_file; struct ftrace_probe_ops { void (*func)(unsigned long ip, unsigned long parent_ip, void **data); int (*callback)(unsigned long ip, void **data); void (*free)(void **data); int (*print)(struct seq_file *m, unsigned long ip, struct ftrace_probe_ops *ops, void *data); }; extern int register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, void *data); extern void unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, void *data); extern void unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops); extern void unregister_ftrace_function_probe_all(char *glob); extern int ftrace_text_reserved(void *start, void *end); enum { FTRACE_FL_FREE = (1 << 0), FTRACE_FL_FAILED = (1 << 1), FTRACE_FL_FILTER = (1 << 2), FTRACE_FL_ENABLED = (1 << 3), FTRACE_FL_NOTRACE = (1 << 4), FTRACE_FL_CONVERTED = (1 << 5), }; struct dyn_ftrace { union { unsigned long ip; /* address of mcount call-site */ struct dyn_ftrace *freelist; }; union { unsigned long flags; struct dyn_ftrace *newlist; }; struct dyn_arch_ftrace arch; }; int ftrace_force_update(void); void ftrace_set_filter(unsigned char *buf, int len, int reset); int register_ftrace_command(struct ftrace_func_command *cmd); int unregister_ftrace_command(struct ftrace_func_command *cmd); /* defined in arch */ extern int ftrace_ip_converted(unsigned long ip); extern int ftrace_dyn_arch_init(void *data); extern int ftrace_update_ftrace_func(ftrace_func_t func); extern void ftrace_caller(void); extern void ftrace_call(void); extern void mcount_call(void); #ifndef FTRACE_ADDR #define FTRACE_ADDR ((unsigned long)ftrace_caller) #endif #ifdef CONFIG_FUNCTION_GRAPH_TRACER extern void ftrace_graph_caller(void); extern int ftrace_enable_ftrace_graph_caller(void); extern int ftrace_disable_ftrace_graph_caller(void); #else static inline int ftrace_enable_ftrace_graph_caller(void) { return 0; } static inline int ftrace_disable_ftrace_graph_caller(void) { return 0; } #endif /** * ftrace_make_nop - convert code into nop * @mod: module structure if called by module load initialization * @rec: the mcount call site record * @addr: the address that the call site should be calling * * This is a very sensitive operation and great care needs * to be taken by the arch. The operation should carefully * read the location, check to see if what is read is indeed * what we expect it to be, and then on success of the compare, * it should write to the location. * * The code segment at @rec->ip should be a caller to @addr * * Return must be: * 0 on success * -EFAULT on error reading the location * -EINVAL on a failed compare of the contents * -EPERM on error writing to the location * Any other value will be considered a failure. */ extern int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec, unsigned long addr); /** * ftrace_make_call - convert a nop call site into a call to addr * @rec: the mcount call site record * @addr: the address that the call site should call * * This is a very sensitive operation and great care needs * to be taken by the arch. The operation should carefully * read the location, check to see if what is read is indeed * what we expect it to be, and then on success of the compare, * it should write to the location. * * The code segment at @rec->ip should be a nop * * Return must be: * 0 on success * -EFAULT on error reading the location * -EINVAL on a failed compare of the contents * -EPERM on error writing to the location * Any other value will be considered a failure. */ extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr); /* May be defined in arch */ extern int ftrace_arch_read_dyn_info(char *buf, int size); extern int skip_trace(unsigned long ip); extern void ftrace_disable_daemon(void); extern void ftrace_enable_daemon(void); #else static inline int skip_trace(unsigned long ip) { return 0; } static inline int ftrace_force_update(void) { return 0; } static inline void ftrace_set_filter(unsigned char *buf, int len, int reset) { } static inline void ftrace_disable_daemon(void) { } static inline void ftrace_enable_daemon(void) { } static inline void ftrace_release_mod(struct module *mod) {} static inline int register_ftrace_command(struct ftrace_func_command *cmd) { return -EINVAL; } static inline int unregister_ftrace_command(char *cmd_name) { return -EINVAL; } static inline int ftrace_text_reserved(void *start, void *end) { return 0; } #endif /* CONFIG_DYNAMIC_FTRACE */ /* totally disable ftrace - can not re-enable after this */ void ftrace_kill(void); static inline void tracer_disable(void) { #ifdef CONFIG_FUNCTION_TRACER ftrace_enabled = 0; #endif } /* * Ftrace disable/restore without lock. Some synchronization mechanism * must be used to prevent ftrace_enabled to be changed between * disable/restore. */ static inline int __ftrace_enabled_save(void) { #ifdef CONFIG_FUNCTION_TRACER int saved_ftrace_enabled = ftrace_enabled; ftrace_enabled = 0; return saved_ftrace_enabled; #else return 0; #endif } static inline void __ftrace_enabled_restore(int enabled) { #ifdef CONFIG_FUNCTION_TRACER ftrace_enabled = enabled; #endif } #ifndef HAVE_ARCH_CALLER_ADDR # ifdef CONFIG_FRAME_POINTER # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) # define CALLER_ADDR1 ((unsigned long)__builtin_return_address(1)) # define CALLER_ADDR2 ((unsigned long)__builtin_return_address(2)) # define CALLER_ADDR3 ((unsigned long)__builtin_return_address(3)) # define CALLER_ADDR4 ((unsigned long)__builtin_return_address(4)) # define CALLER_ADDR5 ((unsigned long)__builtin_return_address(5)) # define CALLER_ADDR6 ((unsigned long)__builtin_return_address(6)) # else # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) # define CALLER_ADDR1 0UL # define CALLER_ADDR2 0UL # define CALLER_ADDR3 0UL # define CALLER_ADDR4 0UL # define CALLER_ADDR5 0UL # define CALLER_ADDR6 0UL # endif #endif /* ifndef HAVE_ARCH_CALLER_ADDR */ #ifdef CONFIG_IRQSOFF_TRACER extern void time_hardirqs_on(unsigned long a0, unsigned long a1); extern void time_hardirqs_off(unsigned long a0, unsigned long a1); #else static inline void time_hardirqs_on(unsigned long a0, unsigned long a1) { } static inline void time_hardirqs_off(unsigned long a0, unsigned long a1) { } #endif #ifdef CONFIG_PREEMPT_TRACER extern void trace_preempt_on(unsigned long a0, unsigned long a1); extern void trace_preempt_off(unsigned long a0, unsigned long a1); #else static inline void trace_preempt_on(unsigned long a0, unsigned long a1) { } static inline void trace_preempt_off(unsigned long a0, unsigned long a1) { } #endif #ifdef CONFIG_FTRACE_MCOUNT_RECORD extern void ftrace_init(void); #else static inline void ftrace_init(void) { } #endif /* * Structure that defines an entry function trace. */ struct ftrace_graph_ent { unsigned long func; /* Current function */ int depth; }; /* * Structure that defines a return function trace. */ struct ftrace_graph_ret { unsigned long func; /* Current function */ unsigned long long calltime; unsigned long long rettime; /* Number of functions that overran the depth limit for current task */ unsigned long overrun; int depth; }; /* Type of the callback handlers for tracing function graph*/ typedef void (*trace_func_graph_ret_t)(struct ftrace_graph_ret *); /* return */ typedef int (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER /* for init task */ #define INIT_FTRACE_GRAPH .ret_stack = NULL, /* * Stack of return addresses for functions * of a thread. * Used in struct thread_info */ struct ftrace_ret_stack { unsigned long ret; unsigned long func; unsigned long long calltime; unsigned long long subtime; unsigned long fp; }; /* * Primary handler of a function return. * It relays on ftrace_return_to_handler. * Defined in entry_32/64.S */ extern void return_to_handler(void); extern int ftrace_push_return_trace(unsigned long ret, unsigned long func, int *depth, unsigned long frame_pointer); /* * Sometimes we don't want to trace a function with the function * graph tracer but we want them to keep traced by the usual function * tracer if the function graph tracer is not configured. */ #define __notrace_funcgraph notrace /* * We want to which function is an entrypoint of a hardirq. * That will help us to put a signal on output. */ #define __irq_entry __attribute__((__section__(".irqentry.text"))) /* Limits of hardirq entrypoints */ extern char __irqentry_text_start[]; extern char __irqentry_text_end[]; #define FTRACE_RETFUNC_DEPTH 50 #define FTRACE_RETSTACK_ALLOC_SIZE 32 extern int register_ftrace_graph(trace_func_graph_ret_t retfunc, trace_func_graph_ent_t entryfunc); extern void ftrace_graph_stop(void); /* The current handlers in use */ extern trace_func_graph_ret_t ftrace_graph_return; extern trace_func_graph_ent_t ftrace_graph_entry; extern void unregister_ftrace_graph(void); extern void ftrace_graph_init_task(struct task_struct *t); extern void ftrace_graph_exit_task(struct task_struct *t); extern void ftrace_graph_init_idle_task(struct task_struct *t, int cpu); static inline int task_curr_ret_stack(struct task_struct *t) { return t->curr_ret_stack; } static inline void pause_graph_tracing(void) { atomic_inc(&current->tracing_graph_pause); } static inline void unpause_graph_tracing(void) { atomic_dec(&current->tracing_graph_pause); } #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ #define __notrace_funcgraph #define __irq_entry #define INIT_FTRACE_GRAPH static inline void ftrace_graph_init_task(struct task_struct *t) { } static inline void ftrace_graph_exit_task(struct task_struct *t) { } static inline void ftrace_graph_init_idle_task(struct task_struct *t, int cpu) { } static inline int register_ftrace_graph(trace_func_graph_ret_t retfunc, trace_func_graph_ent_t entryfunc) { return -1; } static inline void unregister_ftrace_graph(void) { } static inline int task_curr_ret_stack(struct task_struct *tsk) { return -1; } static inline void pause_graph_tracing(void) { } static inline void unpause_graph_tracing(void) { } #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ #ifdef CONFIG_TRACING /* flags for current->trace */ enum { TSK_TRACE_FL_TRACE_BIT = 0, TSK_TRACE_FL_GRAPH_BIT = 1, }; enum { TSK_TRACE_FL_TRACE = 1 << TSK_TRACE_FL_TRACE_BIT, TSK_TRACE_FL_GRAPH = 1 << TSK_TRACE_FL_GRAPH_BIT, }; static inline void set_tsk_trace_trace(struct task_struct *tsk) { set_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace); } static inline void clear_tsk_trace_trace(struct task_struct *tsk) { clear_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace); } static inline int test_tsk_trace_trace(struct task_struct *tsk) { return tsk->trace & TSK_TRACE_FL_TRACE; } static inline void set_tsk_trace_graph(struct task_struct *tsk) { set_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace); } static inline void clear_tsk_trace_graph(struct task_struct *tsk) { clear_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace); } static inline int test_tsk_trace_graph(struct task_struct *tsk) { return tsk->trace & TSK_TRACE_FL_GRAPH; } enum ftrace_dump_mode; extern enum ftrace_dump_mode ftrace_dump_on_oops; #ifdef CONFIG_PREEMPT #define INIT_TRACE_RECURSION .trace_recursion = 0, #endif #endif /* CONFIG_TRACING */ #ifndef INIT_TRACE_RECURSION #define INIT_TRACE_RECURSION #endif #ifdef CONFIG_FTRACE_SYSCALLS unsigned long arch_syscall_addr(int nr); #endif /* CONFIG_FTRACE_SYSCALLS */ #endif /* _LINUX_FTRACE_H */


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