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The new features of this release:

Browse source 
- Added TRACE_DEFINE_SIZEOF() which allows trace events that use
     sizeof() it the TP_printk() to be converted to the actual size such
     that trace-cmd and perf can parse them correctly.
 
   - Some rework of the TRACE_DEFINE_ENUM() such that the above
     TRACE_DEFINE_SIZEOF() could reuse the same code.
 
   - Recording of tgid (Thread Group ID). This is similar to how
     task COMMs are recorded (cached at sched_switch), where it is
     in a table and used on output of the trace and trace_pipe files.
 
   - Have ":mod:<module>" be cached when written into set_ftrace_filter.
     Then the functions of the module will be traced at module load.
 
   - Some random clean ups and small fixes.
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Merge tag 'trace-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "The new features of this release:

   - Added TRACE_DEFINE_SIZEOF() which allows trace events that use
     sizeof() it the TP_printk() to be converted to the actual size such
     that trace-cmd and perf can parse them correctly.

   - Some rework of the TRACE_DEFINE_ENUM() such that the above
     TRACE_DEFINE_SIZEOF() could reuse the same code.

   - Recording of tgid (Thread Group ID). This is similar to how task
     COMMs are recorded (cached at sched_switch), where it is in a table
     and used on output of the trace and trace_pipe files.

   - Have ":mod:<module>" be cached when written into set_ftrace_filter.
     Then the functions of the module will be traced at module load.

   - Some random clean ups and small fixes"

* tag 'trace-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (26 commits)
  ftrace: Test for NULL iter->tr in regex for stack_trace_filter changes
  ftrace: Decrement count for dyn_ftrace_total_info for init functions
  ftrace: Unlock hash mutex on failed allocation in process_mod_list()
  tracing: Add support for display of tgid in trace output
  tracing: Add support for recording tgid of tasks
  ftrace: Decrement count for dyn_ftrace_total_info file
  ftrace: Remove unused function ftrace_arch_read_dyn_info()
  sh/ftrace: Remove only user of ftrace_arch_read_dyn_info()
  ftrace: Have cached module filters be an active filter
  ftrace: Implement cached modules tracing on module load
  ftrace: Have the cached module list show in set_ftrace_filter
  ftrace: Add :mod: caching infrastructure to trace_array
  tracing: Show address when function names are not found
  ftrace: Add missing comment for FTRACE_OPS_FL_RCU
  tracing: Rename update the enum_map file
  tracing: Add TRACE_DEFINE_SIZEOF() macros
  tracing: define TRACE_DEFINE_SIZEOF() macro to map sizeof's to their values
  tracing: Rename enum_replace to eval_replace
  trace: rename enum_map functions
  trace: rename trace.c enum functions
  ...
This commit is contained in:
Linus Torvalds 2017-07-06 19:45:45 -07:00
commit 2074006dac
17 changed files with 797 additions and 245 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/trace/events/xen.h
View file

@ -30,6 +30,8 @@ DECLARE_EVENT_CLASS(xen_mc__batch,
DEFINE_XEN_MC_BATCH(xen_mc_batch);
DEFINE_XEN_MC_BATCH(xen_mc_issue);
TRACE_DEFINE_SIZEOF(ulong);
TRACE_EVENT(xen_mc_entry,
TP_PROTO(struct multicall_entry *mc, unsigned nargs),
TP_ARGS(mc, nargs),
@ -40,8 +42,8 @@ TRACE_EVENT(xen_mc_entry,
),
TP_fast_assign(__entry->op = mc->op;
__entry->nargs = nargs;
memcpy(__entry->args, mc->args, sizeof(unsigned long) * nargs);
memset(__entry->args + nargs, 0, sizeof(unsigned long) * (6 - nargs));
memcpy(__entry->args, mc->args, sizeof(ulong) * nargs);
memset(__entry->args + nargs, 0, sizeof(ulong) * (6 - nargs));
),
TP_printk("op %u%s args [%lx, %lx, %lx, %lx, %lx, %lx]",
__entry->op, xen_hypercall_name(__entry->op),
@ -122,6 +124,7 @@ TRACE_EVENT(xen_mc_extend_args,
__entry->res == XEN_MC_XE_NO_SPACE ? "NO_SPACE" : "???")
);
TRACE_DEFINE_SIZEOF(pteval_t);
/* mmu */
DECLARE_EVENT_CLASS(xen_mmu__set_pte,
TP_PROTO(pte_t *ptep, pte_t pteval),
@ -199,6 +202,8 @@ TRACE_EVENT(xen_mmu_pte_clear,
__entry->mm, __entry->addr, __entry->ptep)
);
TRACE_DEFINE_SIZEOF(pmdval_t);
TRACE_EVENT(xen_mmu_set_pmd,
TP_PROTO(pmd_t *pmdp, pmd_t pmdval),
TP_ARGS(pmdp, pmdval),
@ -226,6 +231,8 @@ TRACE_EVENT(xen_mmu_pmd_clear,
#if CONFIG_PGTABLE_LEVELS >= 4
TRACE_DEFINE_SIZEOF(pudval_t);
TRACE_EVENT(xen_mmu_set_pud,
TP_PROTO(pud_t *pudp, pud_t pudval),
TP_ARGS(pudp, pudval),
@ -241,6 +248,8 @@ TRACE_EVENT(xen_mmu_set_pud,
(int)sizeof(pudval_t) * 2, (unsigned long long)__entry->pudval)
);
TRACE_DEFINE_SIZEOF(p4dval_t);
TRACE_EVENT(xen_mmu_set_p4d,
TP_PROTO(p4d_t *p4dp, p4d_t *user_p4dp, p4d_t p4dval),
TP_ARGS(p4dp, user_p4dp, p4dval),

26
include/trace/trace_events.h
View file

@ -35,15 +35,28 @@ TRACE_MAKE_SYSTEM_STR();
#undef TRACE_DEFINE_ENUM
#define TRACE_DEFINE_ENUM(a) \
static struct trace_enum_map __used __initdata \
static struct trace_eval_map __used __initdata \
__##TRACE_SYSTEM##_##a = \
{ \
.system = TRACE_SYSTEM_STRING, \
.enum_string = #a, \
.enum_value = a \
.eval_string = #a, \
.eval_value = a \
}; \
static struct trace_enum_map __used \
__attribute__((section("_ftrace_enum_map"))) \
static struct trace_eval_map __used \
__attribute__((section("_ftrace_eval_map"))) \
*TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
#undef TRACE_DEFINE_SIZEOF
#define TRACE_DEFINE_SIZEOF(a) \
static struct trace_eval_map __used __initdata \
__##TRACE_SYSTEM##_##a = \
{ \
.system = TRACE_SYSTEM_STRING, \
.eval_string = "sizeof(" #a ")", \
.eval_value = sizeof(a) \
}; \
static struct trace_eval_map __used \
__attribute__((section("_ftrace_eval_map"))) \
*TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
/*
@ -158,6 +171,9 @@ TRACE_MAKE_SYSTEM_STR();
#undef TRACE_DEFINE_ENUM
#define TRACE_DEFINE_ENUM(a)
#undef TRACE_DEFINE_SIZEOF
#define TRACE_DEFINE_SIZEOF(a)
#undef __field
#define __field(type, item)