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perf/core improvements and fixes:

Browse Source 
. Fix building the python bindings with python3, which fixes some
   problems with building with clang on Clear Linux (Eduardo Habkost)
 
 . Fix coverity warnings, fixing up some error paths and plugging
   some temporary small buffer leaks (Sanskriti Sharma)
 
 . Adopt a wrapper for strerror_r() for the same reasons as recently
   for libbpf (Steven Rostedt)
 
 . S390 does not support watchpoints in perf test 22', check if
   that test is supported by the arch. (Thomas Richter)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-4.20-20181008' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

 - Fix building the python bindings with python3, which fixes some
   problems with building with clang on Clear Linux (Eduardo Habkost)

 - Fix coverity warnings, fixing up some error paths and plugging
   some temporary small buffer leaks (Sanskriti Sharma)

 - Adopt a wrapper for strerror_r() for the same reasons as recently
   for libbpf (Steven Rostedt)

 - S390 does not support watchpoints in perf test 22', check if
   that test is supported by the arch. (Thomas Richter)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2018-10-09 07:22:04 +02:00
commit 8f51ba8e60
20 changed files with 539 additions and 259 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
tools/include/linux/bitops.h
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@ -3,8 +3,6 @@
#define _TOOLS_LINUX_BITOPS_H_
#include <asm/types.h>
#include <linux/compiler.h>
#ifndef __WORDSIZE
#define __WORDSIZE (__SIZEOF_LONG__ * 8)
#endif
@ -12,10 +10,9 @@
#ifndef BITS_PER_LONG
# define BITS_PER_LONG __WORDSIZE
#endif
#include <linux/bits.h>
#include <linux/compiler.h>
#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
#define BITS_PER_BYTE 8
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
#define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u64))
#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u32))

26
tools/include/linux/bits.h Normal file
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@ -0,0 +1,26 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_BITS_H
#define __LINUX_BITS_H
#include <asm/bitsperlong.h>
#define BIT(nr) (1UL << (nr))
#define BIT_ULL(nr) (1ULL << (nr))
#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
#define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG))
#define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG)
#define BITS_PER_BYTE 8
/*
* Create a contiguous bitmask starting at bit position @l and ending at
* position @h. For example
* GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
*/
#define GENMASK(h, l) \
(((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
#define GENMASK_ULL(h, l) \
(((~0ULL) - (1ULL << (l)) + 1) & \
(~0ULL >> (BITS_PER_LONG_LONG - 1 - (h))))
#endif /* __LINUX_BITS_H */

2
tools/lib/traceevent/Build
View File

@ -4,6 +4,8 @@ libtraceevent-y += trace-seq.o
libtraceevent-y += parse-filter.o
libtraceevent-y += parse-utils.o
libtraceevent-y += kbuffer-parse.o
libtraceevent-y += tep_strerror.o
libtraceevent-y += event-parse-api.o
plugin_jbd2-y += plugin_jbd2.o
plugin_hrtimer-y += plugin_hrtimer.o

275
tools/lib/traceevent/event-parse-api.c Normal file
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@ -0,0 +1,275 @@
// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
*/
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
/**
* tep_get_first_event - returns the first event in the events array
* @tep: a handle to the tep_handle
*
* This returns pointer to the first element of the events array
* If @tep is NULL, NULL is returned.
*/
struct tep_event_format *tep_get_first_event(struct tep_handle *tep)
{
if (tep && tep->events)
return tep->events[0];
return NULL;
}
/**
* tep_get_events_count - get the number of defined events
* @tep: a handle to the tep_handle
*
* This returns number of elements in event array
* If @tep is NULL, 0 is returned.
*/
int tep_get_events_count(struct tep_handle *tep)
{
if(tep)
return tep->nr_events;
return 0;
}
/**
* tep_set_flag - set event parser flag
* @tep: a handle to the tep_handle
* @flag: flag, or combination of flags to be set
* can be any combination from enum tep_flag
*
* This sets a flag or mbination of flags from enum tep_flag
*/
void tep_set_flag(struct tep_handle *tep, int flag)
{
if(tep)
tep->flags |= flag;
}
unsigned short __tep_data2host2(struct tep_handle *pevent, unsigned short data)
{
unsigned short swap;
if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 8) |
((data & (0xffULL << 8)) >> 8);
return swap;
}
unsigned int __tep_data2host4(struct tep_handle *pevent, unsigned int data)
{
unsigned int swap;
if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 24) |
((data & (0xffULL << 8)) << 8) |
((data & (0xffULL << 16)) >> 8) |
((data & (0xffULL << 24)) >> 24);
return swap;
}
unsigned long long
__tep_data2host8(struct tep_handle *pevent, unsigned long long data)
{
unsigned long long swap;
if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 56) |
((data & (0xffULL << 8)) << 40) |
((data & (0xffULL << 16)) << 24) |
((data & (0xffULL << 24)) << 8) |
((data & (0xffULL << 32)) >> 8) |
((data & (0xffULL << 40)) >> 24) |
((data & (0xffULL << 48)) >> 40) |
((data & (0xffULL << 56)) >> 56);
return swap;
}
/**
* tep_get_header_page_size - get size of the header page
* @pevent: a handle to the tep_handle
*
* This returns size of the header page
* If @pevent is NULL, 0 is returned.
*/
int tep_get_header_page_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->header_page_size_size;
return 0;
}
/**
* tep_get_cpus - get the number of CPUs
* @pevent: a handle to the tep_handle
*
* This returns the number of CPUs
* If @pevent is NULL, 0 is returned.
*/
int tep_get_cpus(struct tep_handle *pevent)
{
if(pevent)
return pevent->cpus;
return 0;
}
/**
* tep_set_cpus - set the number of CPUs
* @pevent: a handle to the tep_handle
*
* This sets the number of CPUs
*/
void tep_set_cpus(struct tep_handle *pevent, int cpus)
{
if(pevent)
pevent->cpus = cpus;
}
/**
* tep_get_long_size - get the size of a long integer on the current machine
* @pevent: a handle to the tep_handle
*
* This returns the size of a long integer on the current machine
* If @pevent is NULL, 0 is returned.
*/
int tep_get_long_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->long_size;
return 0;
}
/**
* tep_set_long_size - set the size of a long integer on the current machine
* @pevent: a handle to the tep_handle
* @size: size, in bytes, of a long integer
*
* This sets the size of a long integer on the current machine
*/
void tep_set_long_size(struct tep_handle *pevent, int long_size)
{
if(pevent)
pevent->long_size = long_size;
}
/**
* tep_get_page_size - get the size of a memory page on the current machine
* @pevent: a handle to the tep_handle
*
* This returns the size of a memory page on the current machine
* If @pevent is NULL, 0 is returned.
*/
int tep_get_page_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->page_size;
return 0;
}
/**
* tep_set_page_size - set the size of a memory page on the current machine
* @pevent: a handle to the tep_handle
* @_page_size: size of a memory page, in bytes
*
* This sets the size of a memory page on the current machine
*/
void tep_set_page_size(struct tep_handle *pevent, int _page_size)
{
if(pevent)
pevent->page_size = _page_size;
}
/**
* tep_is_file_bigendian - get if the file is in big endian order
* @pevent: a handle to the tep_handle
*
* This returns if the file is in big endian order
* If @pevent is NULL, 0 is returned.
*/
int tep_is_file_bigendian(struct tep_handle *pevent)
{
if(pevent)
return pevent->file_bigendian;
return 0;
}
/**
* tep_set_file_bigendian - set if the file is in big endian order
* @pevent: a handle to the tep_handle
* @endian: non zero, if the file is in big endian order
*
* This sets if the file is in big endian order
*/
void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian)
{
if(pevent)
pevent->file_bigendian = endian;
}
/**
* tep_is_host_bigendian - get if the order of the current host is big endian
* @pevent: a handle to the tep_handle
*
* This gets if the order of the current host is big endian
* If @pevent is NULL, 0 is returned.
*/
int tep_is_host_bigendian(struct tep_handle *pevent)
{
if(pevent)
return pevent->host_bigendian;
return 0;
}
/**
* tep_set_host_bigendian - set the order of the local host
* @pevent: a handle to the tep_handle
* @endian: non zero, if the local host has big endian order
*
* This sets the order of the local host
*/
void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
{
if(pevent)
pevent->host_bigendian = endian;
}
/**
* tep_is_latency_format - get if the latency output format is configured
* @pevent: a handle to the tep_handle
*
* This gets if the latency output format is configured
* If @pevent is NULL, 0 is returned.
*/
int tep_is_latency_format(struct tep_handle *pevent)
{
if(pevent)
return pevent->latency_format;
return 0;
}
/**
* tep_set_latency_format - set the latency output format
* @pevent: a handle to the tep_handle
* @lat: non zero for latency output format
*
* This sets the latency output format
*/
void tep_set_latency_format(struct tep_handle *pevent, int lat)
{
if(pevent)
pevent->latency_format = lat;
}

92
tools/lib/traceevent/event-parse-local.h Normal file
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@ -0,0 +1,92 @@
// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
*/
#ifndef _PARSE_EVENTS_INT_H
#define _PARSE_EVENTS_INT_H
struct cmdline;
struct cmdline_list;
struct func_map;
struct func_list;
struct event_handler;
struct func_resolver;
struct tep_handle {
int ref_count;
int header_page_ts_offset;
int header_page_ts_size;
int header_page_size_offset;
int header_page_size_size;
int header_page_data_offset;
int header_page_data_size;
int header_page_overwrite;
enum tep_endian file_bigendian;
enum tep_endian host_bigendian;
int latency_format;
int old_format;
int cpus;
int long_size;
int page_size;
struct cmdline *cmdlines;
struct cmdline_list *cmdlist;
int cmdline_count;
struct func_map *func_map;
struct func_resolver *func_resolver;
struct func_list *funclist;
unsigned int func_count;
struct printk_map *printk_map;
struct printk_list *printklist;
unsigned int printk_count;
struct tep_event_format **events;
int nr_events;
struct tep_event_format **sort_events;
enum tep_event_sort_type last_type;
int type_offset;
int type_size;
int pid_offset;
int pid_size;
int pc_offset;
int pc_size;
int flags_offset;
int flags_size;
int ld_offset;
int ld_size;
int print_raw;
int test_filters;
int flags;
struct tep_format_field *bprint_ip_field;
struct tep_format_field *bprint_fmt_field;
struct tep_format_field *bprint_buf_field;
struct event_handler *handlers;
struct tep_function_handler *func_handlers;
/* cache */
struct tep_event_format *last_event;
char *trace_clock;
};
#endif /* _PARSE_EVENTS_INT_H */

32
tools/lib/traceevent/event-parse.c
View File

@ -18,11 +18,12 @@
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <linux/string.h>
#include <linux/time64.h>
#include <netinet/in.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#include "trace-seq.h"
@ -6201,35 +6202,6 @@ enum tep_errno tep_parse_event(struct tep_handle *pevent, const char *buf,
return __parse_event(pevent, &event, buf, size, sys);
}
#undef _PE
#define _PE(code, str) str
static const char * const tep_error_str[] = {
TEP_ERRORS
};
#undef _PE
int tep_strerror(struct tep_handle *pevent __maybe_unused,
enum tep_errno errnum, char *buf, size_t buflen)
{
int idx;
const char *msg;
if (errnum >= 0) {
str_error_r(errnum, buf, buflen);
return 0;
}
if (errnum <= __TEP_ERRNO__START ||
errnum >= __TEP_ERRNO__END)
return -1;
idx = errnum - __TEP_ERRNO__START - 1;
msg = tep_error_str[idx];
snprintf(buf, buflen, "%s", msg);
return 0;
}
int get_field_val(struct trace_seq *s, struct tep_format_field *field,
const char *name, struct tep_record *record,
unsigned long long *val, int err)

228
tools/lib/traceevent/event-parse.h
View File

@ -405,149 +405,18 @@ void tep_print_plugins(struct trace_seq *s,
const char *prefix, const char *suffix,
const struct tep_plugin_list *list);
struct cmdline;
struct cmdline_list;
struct func_map;
struct func_list;
struct event_handler;
struct func_resolver;
/* tep_handle */
typedef char *(tep_func_resolver_t)(void *priv,
unsigned long long *addrp, char **modp);
void tep_set_flag(struct tep_handle *tep, int flag);
unsigned short __tep_data2host2(struct tep_handle *pevent, unsigned short data);
unsigned int __tep_data2host4(struct tep_handle *pevent, unsigned int data);
unsigned long long
__tep_data2host8(struct tep_handle *pevent, unsigned long long data);
struct tep_handle {
int ref_count;
int header_page_ts_offset;
int header_page_ts_size;
int header_page_size_offset;
int header_page_size_size;
int header_page_data_offset;
int header_page_data_size;
int header_page_overwrite;
int file_bigendian;
int host_bigendian;
int latency_format;
int old_format;
int cpus;
int long_size;
int page_size;
struct cmdline *cmdlines;
struct cmdline_list *cmdlist;
int cmdline_count;
struct func_map *func_map;
struct func_resolver *func_resolver;
struct func_list *funclist;
unsigned int func_count;
struct printk_map *printk_map;
struct printk_list *printklist;
unsigned int printk_count;
struct tep_event_format **events;
int nr_events;
struct tep_event_format **sort_events;
enum tep_event_sort_type last_type;
int type_offset;
int type_size;
int pid_offset;
int pid_size;
int pc_offset;
int pc_size;
int flags_offset;
int flags_size;
int ld_offset;
int ld_size;
int print_raw;
int test_filters;
int flags;
struct tep_format_field *bprint_ip_field;
struct tep_format_field *bprint_fmt_field;
struct tep_format_field *bprint_buf_field;
struct event_handler *handlers;
struct tep_function_handler *func_handlers;
/* cache */
struct tep_event_format *last_event;
char *trace_clock;
};
static inline void tep_set_flag(struct tep_handle *pevent, int flag)
{
pevent->flags |= flag;
}
static inline unsigned short
__tep_data2host2(struct tep_handle *pevent, unsigned short data)
{
unsigned short swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 8) |
((data & (0xffULL << 8)) >> 8);
return swap;
}
static inline unsigned int
__tep_data2host4(struct tep_handle *pevent, unsigned int data)
{
unsigned int swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 24) |
((data & (0xffULL << 8)) << 8) |
((data & (0xffULL << 16)) >> 8) |
((data & (0xffULL << 24)) >> 24);
return swap;
}
static inline unsigned long long
__tep_data2host8(struct tep_handle *pevent, unsigned long long data)
{
unsigned long long swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 56) |
((data & (0xffULL << 8)) << 40) |
((data & (0xffULL << 16)) << 24) |
((data & (0xffULL << 24)) << 8) |
((data & (0xffULL << 32)) >> 8) |
((data & (0xffULL << 40)) >> 24) |
((data & (0xffULL << 48)) >> 40) |
((data & (0xffULL << 56)) >> 56);
return swap;
}
#define tep_data2host2(pevent, ptr) __tep_data2host2(pevent, *(unsigned short *)(ptr))
#define tep_data2host4(pevent, ptr) __tep_data2host4(pevent, *(unsigned int *)(ptr))
#define tep_data2host8(pevent, ptr) \
#define tep_data2host2(pevent, ptr) __tep_data2host2(pevent, *(unsigned short *)(ptr))
#define tep_data2host4(pevent, ptr) __tep_data2host4(pevent, *(unsigned int *)(ptr))
#define tep_data2host8(pevent, ptr) \
({ \
unsigned long long __val; \
\
@ -655,11 +524,12 @@ unsigned long long tep_read_number(struct tep_handle *pevent, const void *ptr, i
int tep_read_number_field(struct tep_format_field *field, const void *data,
unsigned long long *value);
struct tep_event_format *tep_get_first_event(struct tep_handle *tep);
int tep_get_events_count(struct tep_handle *tep);
struct tep_event_format *tep_find_event(struct tep_handle *pevent, int id);
struct tep_event_format *
tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *name);
struct tep_event_format *
tep_find_event_by_record(struct tep_handle *pevent, struct tep_record *record);
@ -689,65 +559,23 @@ struct tep_event_format **tep_list_events(struct tep_handle *pevent, enum tep_ev
struct tep_format_field **tep_event_common_fields(struct tep_event_format *event);
struct tep_format_field **tep_event_fields(struct tep_event_format *event);
static inline int tep_get_cpus(struct tep_handle *pevent)
{
return pevent->cpus;
}
static inline void tep_set_cpus(struct tep_handle *pevent, int cpus)
{
pevent->cpus = cpus;
}
static inline int tep_get_long_size(struct tep_handle *pevent)
{
return pevent->long_size;
}
static inline void tep_set_long_size(struct tep_handle *pevent, int long_size)
{
pevent->long_size = long_size;
}
static inline int tep_get_page_size(struct tep_handle *pevent)
{
return pevent->page_size;
}
static inline void tep_set_page_size(struct tep_handle *pevent, int _page_size)
{
pevent->page_size = _page_size;
}
static inline int tep_is_file_bigendian(struct tep_handle *pevent)
{
return pevent->file_bigendian;
}
static inline void tep_set_file_bigendian(struct tep_handle *pevent, int endian)
{
pevent->file_bigendian = endian;
}
static inline int tep_is_host_bigendian(struct tep_handle *pevent)
{
return pevent->host_bigendian;
}
static inline void tep_set_host_bigendian(struct tep_handle *pevent, int endian)
{
pevent->host_bigendian = endian;
}
static inline int tep_is_latency_format(struct tep_handle *pevent)
{
return pevent->latency_format;
}
static inline void tep_set_latency_format(struct tep_handle *pevent, int lat)
{
pevent->latency_format = lat;
}
enum tep_endian {
TEP_LITTLE_ENDIAN = 0,
TEP_BIG_ENDIAN
};
int tep_get_cpus(struct tep_handle *pevent);
void tep_set_cpus(struct tep_handle *pevent, int cpus);
int tep_get_long_size(struct tep_handle *pevent);
void tep_set_long_size(struct tep_handle *pevent, int long_size);
int tep_get_page_size(struct tep_handle *pevent);
void tep_set_page_size(struct tep_handle *pevent, int _page_size);
int tep_is_file_bigendian(struct tep_handle *pevent);
void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian);
int tep_is_host_bigendian(struct tep_handle *pevent);
void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian);
int tep_is_latency_format(struct tep_handle *pevent);
void tep_set_latency_format(struct tep_handle *pevent, int lat);
int tep_get_header_page_size(struct tep_handle *pevent);
struct tep_handle *tep_alloc(void);
void tep_free(struct tep_handle *pevent);

1
tools/lib/traceevent/event-plugin.c
View File

@ -14,6 +14,7 @@
#include <unistd.h>
#include <dirent.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#include "trace-seq.h"

1
tools/lib/traceevent/parse-filter.c
View File

@ -11,6 +11,7 @@
#include <sys/types.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#define COMM "COMM"

53
tools/lib/traceevent/tep_strerror.c Normal file
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@ -0,0 +1,53 @@
// SPDX-License-Identifier: LGPL-2.1
#undef _GNU_SOURCE
#include <string.h>
#include <stdio.h>
#include "event-parse.h"
#undef _PE
#define _PE(code, str) str
static const char * const tep_error_str[] = {
TEP_ERRORS
};
#undef _PE
/*
* The tools so far have been using the strerror_r() GNU variant, that returns
* a string, be it the buffer passed or something else.
*
* But that, besides being tricky in cases where we expect that the function
* using strerror_r() returns the error formatted in a provided buffer (we have
* to check if it returned something else and copy that instead), breaks the
* build on systems not using glibc, like Alpine Linux, where musl libc is
* used.
*
* So, introduce yet another wrapper, str_error_r(), that has the GNU
* interface, but uses the portable XSI variant of strerror_r(), so that users
* rest asured that the provided buffer is used and it is what is returned.
*/
int tep_strerror(struct tep_handle *tep __maybe_unused,
enum tep_errno errnum, char *buf, size_t buflen)
{
const char *msg;
int idx;
if (!buflen)
return 0;
if (errnum >= 0) {
int err = strerror_r(errnum, buf, buflen);
buf[buflen - 1] = 0;
return err;
}
if (errnum <= __TEP_ERRNO__START ||
errnum >= __TEP_ERRNO__END)
return -1;
idx = errnum - __TEP_ERRNO__START - 1;
msg = tep_error_str[idx];
snprintf(buf, buflen, "%s", msg);
return 0;
}

1
tools/perf/check-headers.sh
View File

@ -14,6 +14,7 @@ include/uapi/linux/sched.h
include/uapi/linux/stat.h
include/uapi/linux/vhost.h
include/uapi/sound/asound.h
include/linux/bits.h
include/linux/hash.h
include/uapi/linux/hw_breakpoint.h
arch/x86/include/asm/disabled-features.h

1
tools/perf/tests/builtin-test.c
View File

@ -123,6 +123,7 @@ static struct test generic_tests[] = {
{
.desc = "Watchpoint",
.func = test__wp,
.is_supported = test__wp_is_supported,
.subtest = {
.skip_if_fail = false,
.get_nr = test__wp_subtest_get_nr,

1
tools/perf/tests/tests.h
View File

@ -109,6 +109,7 @@ int test__unit_number__scnprint(struct test *test, int subtest);
int test__mem2node(struct test *t, int subtest);
bool test__bp_signal_is_supported(void);
bool test__wp_is_supported(void);
#if defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT

12
tools/perf/tests/wp.c
View File

@ -227,3 +227,15 @@ int test__wp(struct test *test __maybe_unused, int i)
return !wp_testcase_table[i].target_func() ? TEST_OK : TEST_FAIL;
}
/* The s390 so far does not have support for
* instruction breakpoint using the perf_event_open() system call.
*/
bool test__wp_is_supported(void)
{
#if defined(__s390x__)
return false;
#else
return true;
#endif
}

1
tools/perf/util/auxtrace.h
View File

@ -23,6 +23,7 @@
#include <linux/list.h>
#include <linux/perf_event.h>
#include <linux/types.h>
#include <asm/bitsperlong.h>
#include "../perf.h"
#include "event.h"

16
tools/perf/util/setup.py
View File

@ -5,16 +5,18 @@ from subprocess import Popen, PIPE
from re import sub
def clang_has_option(option):
return [o for o in Popen(['clang', option], stderr=PIPE).stderr.readlines() if "unknown argument" in o] == [ ]
return [o for o in Popen(['clang', option], stderr=PIPE).stderr.readlines() if b"unknown argument" in o] == [ ]
cc = getenv("CC")
if cc == "clang":
from _sysconfigdata import build_time_vars
build_time_vars["CFLAGS"] = sub("-specs=[^ ]+", "", build_time_vars["CFLAGS"])
if not clang_has_option("-mcet"):
build_time_vars["CFLAGS"] = sub("-mcet", "", build_time_vars["CFLAGS"])
if not clang_has_option("-fcf-protection"):
build_time_vars["CFLAGS"] = sub("-fcf-protection", "", build_time_vars["CFLAGS"])
from distutils.sysconfig import get_config_vars
vars = get_config_vars()
for var in ('CFLAGS', 'OPT'):
vars[var] = sub("-specs=[^ ]+", "", vars[var])
if not clang_has_option("-mcet"):
vars[var] = sub("-mcet", "", vars[var])
if not clang_has_option("-fcf-protection"):
vars[var] = sub("-fcf-protection", "", vars[var])
from distutils.core import setup, Extension

10
tools/perf/util/strbuf.c
View File

@ -98,19 +98,25 @@ static int strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap)
va_copy(ap_saved, ap);
len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
if (len < 0)
if (len < 0) {
va_end(ap_saved);
return len;
}
if (len > strbuf_avail(sb)) {
ret = strbuf_grow(sb, len);
if (ret)
if (ret) {
va_end(ap_saved);
return ret;
}
len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved);
va_end(ap_saved);
if (len > strbuf_avail(sb)) {
pr_debug("this should not happen, your vsnprintf is broken");
va_end(ap_saved);
return -EINVAL;
}
}
va_end(ap_saved);
return strbuf_setlen(sb, sb->len + len);
}

2
tools/perf/util/trace-event-info.c
View File

@ -531,12 +531,14 @@ struct tracing_data *tracing_data_get(struct list_head *pattrs,
"/tmp/perf-XXXXXX");
if (!mkstemp(tdata->temp_file)) {
pr_debug("Can't make temp file");
free(tdata);
return NULL;
}
temp_fd = open(tdata->temp_file, O_RDWR);
if (temp_fd < 0) {
pr_debug("Can't read '%s'", tdata->temp_file);
free(tdata);
return NULL;
}

26
tools/perf/util/trace-event-parse.c
View File

@ -37,10 +37,11 @@ static int get_common_field(struct scripting_context *context,
struct tep_format_field *field;
if (!*size) {
if (!pevent->events)
event = tep_get_first_event(pevent);
if (!event)
return 0;
event = pevent->events[0];
field = tep_find_common_field(event, type);
if (!field)
return 0;
@ -158,6 +159,7 @@ void parse_ftrace_printk(struct tep_handle *pevent,
printk = strdup(fmt+1);
line = strtok_r(NULL, "\n", &next);
tep_register_print_string(pevent, printk, addr);
free(printk);
}
}
@ -192,25 +194,29 @@ struct tep_event_format *trace_find_next_event(struct tep_handle *pevent,
struct tep_event_format *event)
{
static int idx;
int events_count;
struct tep_event_format *all_events;
if (!pevent || !pevent->events)
all_events = tep_get_first_event(pevent);
events_count = tep_get_events_count(pevent);
if (!pevent || !all_events || events_count < 1)
return NULL;
if (!event) {
idx = 0;
return pevent->events[0];
return all_events;
}
if (idx < pevent->nr_events && event == pevent->events[idx]) {
if (idx < events_count && event == (all_events + idx)) {
idx++;
if (idx == pevent->nr_events)
if (idx == events_count)
return NULL;
return pevent->events[idx];
return (all_events + idx);
}
for (idx = 1; idx < pevent->nr_events; idx++) {
if (event == pevent->events[idx - 1])
return pevent->events[idx];
for (idx = 1; idx < events_count; idx++) {
if (event == (all_events + (idx - 1)))
return (all_events + idx);
}
return NULL;
}

11
tools/perf/util/trace-event-read.c
View File

@ -241,7 +241,7 @@ static int read_header_files(struct tep_handle *pevent)
* The commit field in the page is of type long,
* use that instead, since it represents the kernel.
*/
tep_set_long_size(pevent, pevent->header_page_size_size);
tep_set_long_size(pevent, tep_get_header_page_size(pevent));
}
free(header_page);
@ -297,10 +297,8 @@ static int read_event_file(struct tep_handle *pevent, char *sys,
}
ret = do_read(buf, size);
if (ret < 0) {
free(buf);
if (ret < 0)
goto out;
}
ret = parse_event_file(pevent, buf, size, sys);
if (ret < 0)
@ -349,9 +347,12 @@ static int read_event_files(struct tep_handle *pevent)
for (x=0; x < count; x++) {
size = read8(pevent);
ret = read_event_file(pevent, sys, size);
if (ret)
if (ret) {
free(sys);
return ret;
}
}
free(sys);
}
return 0;
}