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linux/arch/powerpc/include/asm/trace.h
Steven Rostedt (Google) 2c92ca849f tracing/treewide: Remove second parameter of __assign_str() 
With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.

This means that with:

  __string(field, mystring)

Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.

There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:

  git grep -l __assign_str | while read a ; do
      sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
      mv /tmp/test-file $a;
  done

I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.

Note, the same updates will need to be done for:

  __assign_str_len()
  __assign_rel_str()
  __assign_rel_str_len()

I tested this with both an allmodconfig and an allyesconfig (build only for both).

[1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/

Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts.
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Darrick J. Wong <djwong@kernel.org>	# xfs
Tested-by: Guenter Roeck <linux@roeck-us.net>
2024-05-22 20:14:47 -04:00

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/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM powerpc
#if !defined(_TRACE_POWERPC_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_POWERPC_H
#include <linux/tracepoint.h>
struct pt_regs;
DECLARE_EVENT_CLASS(ppc64_interrupt_class,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs),
TP_STRUCT__entry(
__field(struct pt_regs *, regs)
),
TP_fast_assign(
__entry->regs = regs;
),
TP_printk("pt_regs=%p", __entry->regs)
);
DEFINE_EVENT(ppc64_interrupt_class, irq_entry,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
DEFINE_EVENT(ppc64_interrupt_class, irq_exit,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_entry,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_exit,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
#ifdef CONFIG_PPC_DOORBELL
DEFINE_EVENT(ppc64_interrupt_class, doorbell_entry,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
DEFINE_EVENT(ppc64_interrupt_class, doorbell_exit,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs)
);
#endif
#ifdef CONFIG_PPC_PSERIES
extern int hcall_tracepoint_regfunc(void);
extern void hcall_tracepoint_unregfunc(void);
TRACE_EVENT_FN_COND(hcall_entry,
TP_PROTO(unsigned long opcode, unsigned long *args),
TP_ARGS(opcode, args),
TP_CONDITION(cpu_online(raw_smp_processor_id())),
TP_STRUCT__entry(
__field(unsigned long, opcode)
),
TP_fast_assign(
__entry->opcode = opcode;
),
TP_printk("opcode=%lu", __entry->opcode),
hcall_tracepoint_regfunc, hcall_tracepoint_unregfunc
);
TRACE_EVENT_FN_COND(hcall_exit,
TP_PROTO(unsigned long opcode, long retval, unsigned long *retbuf),
TP_ARGS(opcode, retval, retbuf),
TP_CONDITION(cpu_online(raw_smp_processor_id())),
TP_STRUCT__entry(
__field(unsigned long, opcode)
__field(long, retval)
),
TP_fast_assign(
__entry->opcode = opcode;
__entry->retval = retval;
),
TP_printk("opcode=%lu retval=%ld", __entry->opcode, __entry->retval),
hcall_tracepoint_regfunc, hcall_tracepoint_unregfunc
);
#endif
#ifdef CONFIG_PPC_RTAS
#include <asm/rtas-types.h>
TRACE_EVENT(rtas_input,
TP_PROTO(struct rtas_args *rtas_args, const char *name),
TP_ARGS(rtas_args, name),
TP_STRUCT__entry(
__field(__u32, nargs)
__string(name, name)
__dynamic_array(__u32, inputs, be32_to_cpu(rtas_args->nargs))
),
TP_fast_assign(
__entry->nargs = be32_to_cpu(rtas_args->nargs);
__assign_str(name);
be32_to_cpu_array(__get_dynamic_array(inputs), rtas_args->args, __entry->nargs);
),
TP_printk("%s arguments: %s", __get_str(name),
__print_array(__get_dynamic_array(inputs), __entry->nargs, 4)
)
);
TRACE_EVENT(rtas_output,
TP_PROTO(struct rtas_args *rtas_args, const char *name),
TP_ARGS(rtas_args, name),
TP_STRUCT__entry(
__field(__u32, nr_other)
__field(__s32, status)
__string(name, name)
__dynamic_array(__u32, other_outputs, be32_to_cpu(rtas_args->nret) - 1)
),
TP_fast_assign(
__entry->nr_other = be32_to_cpu(rtas_args->nret) - 1;
__entry->status = be32_to_cpu(rtas_args->rets[0]);
__assign_str(name);
be32_to_cpu_array(__get_dynamic_array(other_outputs),
&rtas_args->rets[1], __entry->nr_other);
),
TP_printk("%s status: %d, other outputs: %s", __get_str(name), __entry->status,
__print_array(__get_dynamic_array(other_outputs),
__entry->nr_other, 4)
)
);
DECLARE_EVENT_CLASS(rtas_parameter_block,
TP_PROTO(struct rtas_args *rtas_args),
TP_ARGS(rtas_args),
TP_STRUCT__entry(
__field(u32, token)
__field(u32, nargs)
__field(u32, nret)
__array(__u32, params, 16)
),
TP_fast_assign(
__entry->token = be32_to_cpu(rtas_args->token);
__entry->nargs = be32_to_cpu(rtas_args->nargs);
__entry->nret = be32_to_cpu(rtas_args->nret);
be32_to_cpu_array(__entry->params, rtas_args->args, ARRAY_SIZE(rtas_args->args));
),
TP_printk("token=%u nargs=%u nret=%u params:"
" [0]=0x%08x [1]=0x%08x [2]=0x%08x [3]=0x%08x"
" [4]=0x%08x [5]=0x%08x [6]=0x%08x [7]=0x%08x"
" [8]=0x%08x [9]=0x%08x [10]=0x%08x [11]=0x%08x"
" [12]=0x%08x [13]=0x%08x [14]=0x%08x [15]=0x%08x",
__entry->token, __entry->nargs, __entry->nret,
__entry->params[0], __entry->params[1], __entry->params[2], __entry->params[3],
__entry->params[4], __entry->params[5], __entry->params[6], __entry->params[7],
__entry->params[8], __entry->params[9], __entry->params[10], __entry->params[11],
__entry->params[12], __entry->params[13], __entry->params[14], __entry->params[15]
)
);
DEFINE_EVENT(rtas_parameter_block, rtas_ll_entry,
TP_PROTO(struct rtas_args *rtas_args),
TP_ARGS(rtas_args)
);
DEFINE_EVENT(rtas_parameter_block, rtas_ll_exit,
TP_PROTO(struct rtas_args *rtas_args),
TP_ARGS(rtas_args)
);
#endif /* CONFIG_PPC_RTAS */
#ifdef CONFIG_PPC_POWERNV
extern int opal_tracepoint_regfunc(void);
extern void opal_tracepoint_unregfunc(void);
TRACE_EVENT_FN(opal_entry,
TP_PROTO(unsigned long opcode, unsigned long *args),
TP_ARGS(opcode, args),
TP_STRUCT__entry(
__field(unsigned long, opcode)
),
TP_fast_assign(
__entry->opcode = opcode;
),
TP_printk("opcode=%lu", __entry->opcode),
opal_tracepoint_regfunc, opal_tracepoint_unregfunc
);
TRACE_EVENT_FN(opal_exit,
TP_PROTO(unsigned long opcode, unsigned long retval),
TP_ARGS(opcode, retval),
TP_STRUCT__entry(
__field(unsigned long, opcode)
__field(unsigned long, retval)
),
TP_fast_assign(
__entry->opcode = opcode;
__entry->retval = retval;
),
TP_printk("opcode=%lu retval=%lu", __entry->opcode, __entry->retval),
opal_tracepoint_regfunc, opal_tracepoint_unregfunc
);
#endif
#ifdef CONFIG_PPC_64S_HASH_MMU
TRACE_EVENT(hash_fault,
TP_PROTO(unsigned long addr, unsigned long access, unsigned long trap),
TP_ARGS(addr, access, trap),
TP_STRUCT__entry(
__field(unsigned long, addr)
__field(unsigned long, access)
__field(unsigned long, trap)
),
TP_fast_assign(
__entry->addr = addr;
__entry->access = access;
__entry->trap = trap;
),
TP_printk("hash fault with addr 0x%lx and access = 0x%lx trap = 0x%lx",
__entry->addr, __entry->access, __entry->trap)
);
#endif
TRACE_EVENT(tlbie,
TP_PROTO(unsigned long lpid, unsigned long local, unsigned long rb,
unsigned long rs, unsigned long ric, unsigned long prs,
unsigned long r),
TP_ARGS(lpid, local, rb, rs, ric, prs, r),
TP_STRUCT__entry(
__field(unsigned long, lpid)
__field(unsigned long, local)
__field(unsigned long, rb)
__field(unsigned long, rs)
__field(unsigned long, ric)
__field(unsigned long, prs)
__field(unsigned long, r)
),
TP_fast_assign(
__entry->lpid = lpid;
__entry->local = local;
__entry->rb = rb;
__entry->rs = rs;
__entry->ric = ric;
__entry->prs = prs;
__entry->r = r;
),
TP_printk("lpid=%ld, local=%ld, rb=0x%lx, rs=0x%lx, ric=0x%lx, "
"prs=0x%lx, r=0x%lx", __entry->lpid, __entry->local,
__entry->rb, __entry->rs, __entry->ric, __entry->prs,
__entry->r)
);
TRACE_EVENT(tlbia,
TP_PROTO(unsigned long id),
TP_ARGS(id),
TP_STRUCT__entry(
__field(unsigned long, id)
),
TP_fast_assign(
__entry->id = id;
),
TP_printk("ctx.id=0x%lx", __entry->id)
);
#endif /* _TRACE_POWERPC_H */
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH asm
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
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