F: mm/kmemleak.c
F: mm/kmemleak-test.c
-KMEMTRACE
-M: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
-S: Maintained
-F: Documentation/trace/kmemtrace.txt
-F: include/linux/kmemtrace.h
-F: kernel/trace/kmemtrace.c
-
KPROBES
M: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
M: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
M: Steven Rostedt <rostedt@goodmis.org>
M: Frederic Weisbecker <fweisbec@gmail.com>
M: Ingo Molnar <mingo@redhat.com>
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git tracing/core
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git perf/core
S: Maintained
F: Documentation/trace/ftrace.txt
F: arch/*/*/*/ftrace.h
WATCHDOG DEVICE DRIVERS
M: Wim Van Sebroeck <wim@iguana.be>
+ L: linux-watchdog@vger.kernel.org
+ W: http://www.linux-watchdog.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog.git
S: Maintained
F: Documentation/watchdog/
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 35
- EXTRAVERSION = -rc5
+ EXTRAVERSION =
NAME = Sheep on Meth
# *DOCUMENTATION*
no-dot-config-targets := clean mrproper distclean \
cscope TAGS tags help %docs check% \
include/linux/version.h headers_% \
- kernelrelease kernelversion
+ kernelrelease kernelversion %src-pkg
config-targets := 0
mixed-targets := 0
# rpm target kept for backward compatibility
package-dir := $(srctree)/scripts/package
+%src-pkg: FORCE
+ $(Q)$(MAKE) $(build)=$(package-dir) $@
%pkg: include/config/kernel.release FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
rpm: include/config/kernel.release FORCE
#include <linux/completion.h>
#include <linux/mutex.h>
+#include <trace/events/power.h>
+
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, \
"cpufreq-core", msg)
case CPUFREQ_POSTCHANGE:
adjust_jiffies(CPUFREQ_POSTCHANGE, freqs);
+ trace_power_frequency(POWER_PSTATE, freqs->new, freqs->cpu);
srcu_notifier_call_chain(&cpufreq_transition_notifier_list,
CPUFREQ_POSTCHANGE, freqs);
if (likely(policy) && likely(policy->cpu == freqs->cpu))
err_unlock_policy:
unlock_policy_rwsem_write(cpu);
+ free_cpumask_var(policy->related_cpus);
err_free_cpumask:
free_cpumask_var(policy->cpus);
err_free_policy:
dprintk("governor switch\n");
/* end old governor */
- if (data->governor) {
- /*
- * Need to release the rwsem around governor
- * stop due to lock dependency between
- * cancel_delayed_work_sync and the read lock
- * taken in the delayed work handler.
- */
- unlock_policy_rwsem_write(data->cpu);
+ if (data->governor)
__cpufreq_governor(data, CPUFREQ_GOV_STOP);
- lock_policy_rwsem_write(data->cpu);
- }
/* start new governor */
data->governor = policy->governor;
/* Align . to a 8 byte boundary equals to maximum function alignment. */
#define ALIGN_FUNCTION() . = ALIGN(8)
+ /*
+ * Align to a 32 byte boundary equal to the
+ * alignment gcc 4.5 uses for a struct
+ */
+ #define STRUCT_ALIGN() . = ALIGN(32)
+
/* The actual configuration determine if the init/exit sections
* are handled as text/data or they can be discarded (which
* often happens at runtime)
CPU_KEEP(exit.data) \
MEM_KEEP(init.data) \
MEM_KEEP(exit.data) \
- . = ALIGN(8); \
- VMLINUX_SYMBOL(__start___markers) = .; \
- *(__markers) \
- VMLINUX_SYMBOL(__stop___markers) = .; \
. = ALIGN(32); \
VMLINUX_SYMBOL(__start___tracepoints) = .; \
*(__tracepoints) \
LIKELY_PROFILE() \
BRANCH_PROFILE() \
TRACE_PRINTKS() \
+ \
+ STRUCT_ALIGN(); \
FTRACE_EVENTS() \
+ \
+ STRUCT_ALIGN(); \
TRACE_SYSCALLS()
/*
*/
#define INIT_TASK_DATA_SECTION(align) \
. = ALIGN(align); \
- .data..init_task : { \
+ .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \
INIT_TASK_DATA(align) \
}
#define task_is_traced(task) ((task->state & __TASK_TRACED) != 0)
#define task_is_stopped(task) ((task->state & __TASK_STOPPED) != 0)
+ #define task_is_dead(task) ((task)->exit_state != 0)
#define task_is_stopped_or_traced(task) \
((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
#define task_contributes_to_load(task) \
#endif /* CONFIG_SMP */
-#ifdef CONFIG_TRACING
-extern void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3);
-#else
-static inline void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
-}
-#endif
-
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
fi
$(MAKE) clean
$(PREV) ln -sf $(srctree) $(KERNELPATH)
- $(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --scm-only > $(objtree)/.scmversion
+ $(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --save-scmversion
$(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/.
$(PREV) rm $(KERNELPATH)
rm -f $(objtree)/.scmversion
clean-dirs += $(objtree)/tar-install/
+# perf-pkg - generate a source tarball with perf source
+# ---------------------------------------------------------------------------
+
+perf-tar=perf-$(KERNELVERSION)
+
+quiet_cmd_perf_tar = TAR
+ cmd_perf_tar = \
+git archive --prefix=$(perf-tar)/ HEAD^{tree} \
+ $$(cat $(srctree)/tools/perf/MANIFEST) -o $(perf-tar).tar; \
+mkdir -p $(perf-tar); \
+git rev-parse HEAD > $(perf-tar)/HEAD; \
+tar rf $(perf-tar).tar $(perf-tar)/HEAD; \
+rm -r $(perf-tar); \
+$(if $(findstring tar-src,$@),, \
+$(if $(findstring bz2,$@),bzip2, \
+$(if $(findstring gz,$@),gzip, \
+$(error unknown target $@))) \
+ -f -9 $(perf-tar).tar)
+
+perf-%pkg: FORCE
+ $(call cmd,perf_tar)
+
# Help text displayed when executing 'make help'
# ---------------------------------------------------------------------------
help: FORCE
- @echo ' rpm-pkg - Build both source and binary RPM kernel packages'
- @echo ' binrpm-pkg - Build only the binary kernel package'
- @echo ' deb-pkg - Build the kernel as an deb package'
- @echo ' tar-pkg - Build the kernel as an uncompressed tarball'
- @echo ' targz-pkg - Build the kernel as a gzip compressed tarball'
- @echo ' tarbz2-pkg - Build the kernel as a bzip2 compressed tarball'
+ @echo ' rpm-pkg - Build both source and binary RPM kernel packages'
+ @echo ' binrpm-pkg - Build only the binary kernel package'
+ @echo ' deb-pkg - Build the kernel as an deb package'
+ @echo ' tar-pkg - Build the kernel as an uncompressed tarball'
+ @echo ' targz-pkg - Build the kernel as a gzip compressed tarball'
+ @echo ' tarbz2-pkg - Build the kernel as a bzip2 compressed tarball'
+ @echo ' perf-tar-src-pkg - Build $(perf-tar).tar source tarball'
+ @echo ' perf-targz-src-pkg - Build $(perf-tar).tar.gz source tarball'
+ @echo ' perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball'
#include "sort.h"
#include <math.h>
+enum hist_filter {
+ HIST_FILTER__DSO,
+ HIST_FILTER__THREAD,
+ HIST_FILTER__PARENT,
+};
+
struct callchain_param callchain_param = {
.mode = CHAIN_GRAPH_REL,
.min_percent = 0.5
};
+u16 hists__col_len(struct hists *self, enum hist_column col)
+{
+ return self->col_len[col];
+}
+
+void hists__set_col_len(struct hists *self, enum hist_column col, u16 len)
+{
+ self->col_len[col] = len;
+}
+
+bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len)
+{
+ if (len > hists__col_len(self, col)) {
+ hists__set_col_len(self, col, len);
+ return true;
+ }
+ return false;
+}
+
+static void hists__reset_col_len(struct hists *self)
+{
+ enum hist_column col;
+
+ for (col = 0; col < HISTC_NR_COLS; ++col)
+ hists__set_col_len(self, col, 0);
+}
+
+static void hists__calc_col_len(struct hists *self, struct hist_entry *h)
+{
+ u16 len;
+
+ if (h->ms.sym)
+ hists__new_col_len(self, HISTC_SYMBOL, h->ms.sym->namelen);
+
+ len = thread__comm_len(h->thread);
+ if (hists__new_col_len(self, HISTC_COMM, len))
+ hists__set_col_len(self, HISTC_THREAD, len + 6);
+
+ if (h->ms.map) {
+ len = dso__name_len(h->ms.map->dso);
+ hists__new_col_len(self, HISTC_DSO, len);
+ }
+}
+
static void hist_entry__add_cpumode_period(struct hist_entry *self,
unsigned int cpumode, u64 period)
{
return self;
}
-static void hists__inc_nr_entries(struct hists *self, struct hist_entry *entry)
+static void hists__inc_nr_entries(struct hists *self, struct hist_entry *h)
{
- if (entry->ms.sym && self->max_sym_namelen < entry->ms.sym->namelen)
- self->max_sym_namelen = entry->ms.sym->namelen;
- ++self->nr_entries;
+ if (!h->filtered) {
+ hists__calc_col_len(self, h);
+ ++self->nr_entries;
+ }
+}
+
+static u8 symbol__parent_filter(const struct symbol *parent)
+{
+ if (symbol_conf.exclude_other && parent == NULL)
+ return 1 << HIST_FILTER__PARENT;
+ return 0;
}
struct hist_entry *__hists__add_entry(struct hists *self,
.map = al->map,
.sym = al->sym,
},
+ .cpu = al->cpu,
.ip = al->addr,
.level = al->level,
.period = period,
.parent = sym_parent,
+ .filtered = symbol__parent_filter(sym_parent),
};
int cmp;
tmp = RB_ROOT;
next = rb_first(&self->entries);
self->nr_entries = 0;
- self->max_sym_namelen = 0;
+ hists__reset_col_len(self);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
next = rb_first(&self->entries);
self->nr_entries = 0;
- self->max_sym_namelen = 0;
+ hists__reset_col_len(self);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
}
int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
- struct hists *pair_hists, bool show_displacement,
- long displacement, bool color, u64 session_total)
+ struct hists *hists, struct hists *pair_hists,
+ bool show_displacement, long displacement,
+ bool color, u64 session_total)
{
struct sort_entry *se;
u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us;
ret += snprintf(s + ret, size - ret, "%s", sep ?: " ");
ret += se->se_snprintf(self, s + ret, size - ret,
- se->se_width ? *se->se_width : 0);
+ hists__col_len(hists, se->se_width_idx));
}
return ret;
}
-int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
- bool show_displacement, long displacement, FILE *fp,
- u64 session_total)
+int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+ struct hists *pair_hists, bool show_displacement,
+ long displacement, FILE *fp, u64 session_total)
{
char bf[512];
- int ret;
-
- ret = hist_entry__snprintf(self, bf, sizeof(bf), pair_hists,
- show_displacement, displacement,
- true, session_total);
- if (!ret)
- return 0;
-
+ hist_entry__snprintf(self, bf, sizeof(bf), hists, pair_hists,
+ show_displacement, displacement,
+ true, session_total);
return fprintf(fp, "%s\n", bf);
}
-static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp,
+static size_t hist_entry__fprintf_callchain(struct hist_entry *self,
+ struct hists *hists, FILE *fp,
u64 session_total)
{
int left_margin = 0;
if (sort__first_dimension == SORT_COMM) {
struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
typeof(*se), list);
- left_margin = se->se_width ? *se->se_width : 0;
+ left_margin = hists__col_len(hists, se->se_width_idx);
left_margin -= thread__comm_len(self->thread);
}
continue;
}
width = strlen(se->se_header);
- if (se->se_width) {
- if (symbol_conf.col_width_list_str) {
- if (col_width) {
- *se->se_width = atoi(col_width);
- col_width = strchr(col_width, ',');
- if (col_width)
- ++col_width;
- }
+ if (symbol_conf.col_width_list_str) {
+ if (col_width) {
+ hists__set_col_len(self, se->se_width_idx,
+ atoi(col_width));
+ col_width = strchr(col_width, ',');
+ if (col_width)
+ ++col_width;
}
- width = *se->se_width = max(*se->se_width, width);
}
+ if (!hists__new_col_len(self, se->se_width_idx, width))
+ width = hists__col_len(self, se->se_width_idx);
fprintf(fp, " %*s", width, se->se_header);
}
fprintf(fp, "\n");
continue;
fprintf(fp, " ");
- if (se->se_width)
- width = *se->se_width;
- else
+ width = hists__col_len(self, se->se_width_idx);
+ if (width == 0)
width = strlen(se->se_header);
for (i = 0; i < width; i++)
fprintf(fp, ".");
print_entries:
for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
- int cnt;
if (show_displacement) {
if (h->pair != NULL)
displacement = 0;
++position;
}
- cnt = hist_entry__fprintf(h, pair, show_displacement,
- displacement, fp, self->stats.total_period);
- /* Ignore those that didn't match the parent filter */
- if (!cnt)
- continue;
-
- ret += cnt;
+ ret += hist_entry__fprintf(h, self, pair, show_displacement,
+ displacement, fp, self->stats.total_period);
if (symbol_conf.use_callchain)
- ret += hist_entry__fprintf_callchain(h, fp, self->stats.total_period);
-
+ ret += hist_entry__fprintf_callchain(h, self, fp,
+ self->stats.total_period);
if (h->ms.map == NULL && verbose > 1) {
__map_groups__fprintf_maps(&h->thread->mg,
MAP__FUNCTION, verbose, fp);
return ret;
}
-enum hist_filter {
- HIST_FILTER__DSO,
- HIST_FILTER__THREAD,
-};
+/*
+ * See hists__fprintf to match the column widths
+ */
+unsigned int hists__sort_list_width(struct hists *self)
+{
+ struct sort_entry *se;
+ int ret = 9; /* total % */
+
+ if (symbol_conf.show_cpu_utilization) {
+ ret += 7; /* count_sys % */
+ ret += 6; /* count_us % */
+ if (perf_guest) {
+ ret += 13; /* count_guest_sys % */
+ ret += 12; /* count_guest_us % */
+ }
+ }
+
+ if (symbol_conf.show_nr_samples)
+ ret += 11;
+
+ list_for_each_entry(se, &hist_entry__sort_list, list)
+ if (!se->elide)
+ ret += 2 + hists__col_len(self, se->se_width_idx);
+
+ return ret;
+}
+
+static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
+ enum hist_filter filter)
+{
+ h->filtered &= ~(1 << filter);
+ if (h->filtered)
+ return;
+
+ ++self->nr_entries;
+ if (h->ms.unfolded)
+ self->nr_entries += h->nr_rows;
+ h->row_offset = 0;
+ self->stats.total_period += h->period;
+ self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
+
+ hists__calc_col_len(self, h);
+}
void hists__filter_by_dso(struct hists *self, const struct dso *dso)
{
self->nr_entries = self->stats.total_period = 0;
self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
- self->max_sym_namelen = 0;
+ hists__reset_col_len(self);
for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
continue;
}
- h->filtered &= ~(1 << HIST_FILTER__DSO);
- if (!h->filtered) {
- ++self->nr_entries;
- self->stats.total_period += h->period;
- self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
- if (h->ms.sym &&
- self->max_sym_namelen < h->ms.sym->namelen)
- self->max_sym_namelen = h->ms.sym->namelen;
- }
+ hists__remove_entry_filter(self, h, HIST_FILTER__DSO);
}
}
self->nr_entries = self->stats.total_period = 0;
self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
- self->max_sym_namelen = 0;
+ hists__reset_col_len(self);
for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
h->filtered |= (1 << HIST_FILTER__THREAD);
continue;
}
- h->filtered &= ~(1 << HIST_FILTER__THREAD);
- if (!h->filtered) {
- ++self->nr_entries;
- self->stats.total_period += h->period;
- self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
- if (h->ms.sym &&
- self->max_sym_namelen < h->ms.sym->namelen)
- self->max_sym_namelen = h->ms.sym->namelen;
- }
+
+ hists__remove_entry_filter(self, h, HIST_FILTER__THREAD);
}
}
* Parse hexa addresses followed by ':'
*/
line_ip = strtoull(tmp, &tmp2, 16);
- if (*tmp2 != ':' || tmp == tmp2)
+ if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
line_ip = -1;
}
if (line_ip != -1) {
- u64 start = map__rip_2objdump(self->ms.map, sym->start);
+ u64 start = map__rip_2objdump(self->ms.map, sym->start),
+ end = map__rip_2objdump(self->ms.map, sym->end);
+
offset = line_ip - start;
+ if (offset < 0 || (u64)line_ip > end)
+ offset = -1;
}
objdump_line = objdump_line__new(offset, line);
dso, dso->long_name, sym, sym->name);
snprintf(command, sizeof(command),
- "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s|expand",
+ "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS -C %s|grep -v %s|expand",
map__rip_2objdump(map, sym->start),
map__rip_2objdump(map, sym->end),
filename, filename);
#include <fcntl.h>
#include <unistd.h>
#include "build-id.h"
+#include "debug.h"
#include "symbol.h"
#include "strlist.h"
#define NT_GNU_BUILD_ID 3
#endif
+static bool dso__build_id_equal(const struct dso *self, u8 *build_id);
+static int elf_read_build_id(Elf *elf, void *bf, size_t size);
static void dsos__add(struct list_head *head, struct dso *dso);
static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
.try_vmlinux_path = true,
};
+int dso__name_len(const struct dso *self)
+{
+ if (verbose)
+ return self->long_name_len;
+
+ return self->short_name_len;
+}
+
bool dso__loaded(const struct dso *self, enum map_type type)
{
return self->loaded & (1 << type);
int i;
for (i = 0; i < MAP__NR_TYPES; ++i)
symbols__delete(&self->symbols[i]);
- if (self->long_name != self->name)
+ if (self->sname_alloc)
+ free((char *)self->short_name);
+ if (self->lname_alloc)
free(self->long_name);
free(self);
}
}
}
+static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr)
+{
+ Elf_Scn *sec = NULL;
+ GElf_Shdr shdr;
+ size_t cnt = 1;
+
+ while ((sec = elf_nextscn(elf, sec)) != NULL) {
+ gelf_getshdr(sec, &shdr);
+
+ if ((addr >= shdr.sh_addr) &&
+ (addr < (shdr.sh_addr + shdr.sh_size)))
+ return cnt;
+
+ ++cnt;
+ }
+
+ return -1;
+}
+
static int dso__load_sym(struct dso *self, struct map *map, const char *name,
- int fd, symbol_filter_t filter, int kmodule)
+ int fd, symbol_filter_t filter, int kmodule,
+ int want_symtab)
{
struct kmap *kmap = self->kernel ? map__kmap(map) : NULL;
struct map *curr_map = map;
int err = -1;
uint32_t idx;
GElf_Ehdr ehdr;
- GElf_Shdr shdr;
- Elf_Data *syms;
+ GElf_Shdr shdr, opdshdr;
+ Elf_Data *syms, *opddata = NULL;
GElf_Sym sym;
- Elf_Scn *sec, *sec_strndx;
+ Elf_Scn *sec, *sec_strndx, *opdsec;
Elf *elf;
int nr = 0;
+ size_t opdidx = 0;
elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- pr_err("%s: cannot read %s ELF file.\n", __func__, name);
+ pr_debug("%s: cannot read %s ELF file.\n", __func__, name);
goto out_close;
}
if (gelf_getehdr(elf, &ehdr) == NULL) {
- pr_err("%s: cannot get elf header.\n", __func__);
+ pr_debug("%s: cannot get elf header.\n", __func__);
goto out_elf_end;
}
+ /* Always reject images with a mismatched build-id: */
+ if (self->has_build_id) {
+ u8 build_id[BUILD_ID_SIZE];
+
+ if (elf_read_build_id(elf, build_id,
+ BUILD_ID_SIZE) != BUILD_ID_SIZE)
+ goto out_elf_end;
+
+ if (!dso__build_id_equal(self, build_id))
+ goto out_elf_end;
+ }
+
sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL);
if (sec == NULL) {
+ if (want_symtab)
+ goto out_elf_end;
+
sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL);
if (sec == NULL)
goto out_elf_end;
}
+ opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx);
+ if (opdsec)
+ opddata = elf_rawdata(opdsec, NULL);
+
syms = elf_getdata(sec, NULL);
if (syms == NULL)
goto out_elf_end;
if (!is_label && !elf_sym__is_a(&sym, map->type))
continue;
+ if (opdsec && sym.st_shndx == opdidx) {
+ u32 offset = sym.st_value - opdshdr.sh_addr;
+ u64 *opd = opddata->d_buf + offset;
+ sym.st_value = *opd;
+ sym.st_shndx = elf_addr_to_index(elf, sym.st_value);
+ }
+
sec = elf_getscn(elf, sym.st_shndx);
if (!sec)
goto out_elf_end;
*/
#define NOTE_ALIGN(n) (((n) + 3) & -4U)
-int filename__read_build_id(const char *filename, void *bf, size_t size)
+static int elf_read_build_id(Elf *elf, void *bf, size_t size)
{
- int fd, err = -1;
+ int err = -1;
GElf_Ehdr ehdr;
GElf_Shdr shdr;
Elf_Data *data;
Elf_Scn *sec;
Elf_Kind ek;
void *ptr;
- Elf *elf;
if (size < BUILD_ID_SIZE)
goto out;
- fd = open(filename, O_RDONLY);
- if (fd < 0)
- goto out;
-
- elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
- if (elf == NULL) {
- pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename);
- goto out_close;
- }
-
ek = elf_kind(elf);
if (ek != ELF_K_ELF)
- goto out_elf_end;
+ goto out;
if (gelf_getehdr(elf, &ehdr) == NULL) {
pr_err("%s: cannot get elf header.\n", __func__);
- goto out_elf_end;
+ goto out;
}
sec = elf_section_by_name(elf, &ehdr, &shdr,
sec = elf_section_by_name(elf, &ehdr, &shdr,
".notes", NULL);
if (sec == NULL)
- goto out_elf_end;
+ goto out;
}
data = elf_getdata(sec, NULL);
if (data == NULL)
- goto out_elf_end;
+ goto out;
ptr = data->d_buf;
while (ptr < (data->d_buf + data->d_size)) {
}
ptr += descsz;
}
-out_elf_end:
+
+out:
+ return err;
+}
+
+int filename__read_build_id(const char *filename, void *bf, size_t size)
+{
+ int fd, err = -1;
+ Elf *elf;
+
+ if (size < BUILD_ID_SIZE)
+ goto out;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ goto out;
+
+ elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
+ if (elf == NULL) {
+ pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename);
+ goto out_close;
+ }
+
+ err = elf_read_build_id(elf, bf, size);
+
elf_end(elf);
out_close:
close(fd);
{
int size = PATH_MAX;
char *name;
- u8 build_id[BUILD_ID_SIZE];
int ret = -1;
int fd;
struct machine *machine;
const char *root_dir;
+ int want_symtab;
dso__set_loaded(self, map->type);
return ret;
}
- self->origin = DSO__ORIG_BUILD_ID_CACHE;
- if (dso__build_id_filename(self, name, size) != NULL)
- goto open_file;
-more:
- do {
- self->origin++;
+ /* Iterate over candidate debug images.
+ * On the first pass, only load images if they have a full symtab.
+ * Failing that, do a second pass where we accept .dynsym also
+ */
+ for (self->origin = DSO__ORIG_BUILD_ID_CACHE, want_symtab = 1;
+ self->origin != DSO__ORIG_NOT_FOUND;
+ self->origin++) {
switch (self->origin) {
+ case DSO__ORIG_BUILD_ID_CACHE:
+ if (dso__build_id_filename(self, name, size) == NULL)
+ continue;
+ break;
case DSO__ORIG_FEDORA:
snprintf(name, size, "/usr/lib/debug%s.debug",
self->long_name);
snprintf(name, size, "/usr/lib/debug%s",
self->long_name);
break;
- case DSO__ORIG_BUILDID:
- if (filename__read_build_id(self->long_name, build_id,
- sizeof(build_id))) {
- char build_id_hex[BUILD_ID_SIZE * 2 + 1];
- build_id__sprintf(build_id, sizeof(build_id),
- build_id_hex);
- snprintf(name, size,
- "/usr/lib/debug/.build-id/%.2s/%s.debug",
- build_id_hex, build_id_hex + 2);
- if (self->has_build_id)
- goto compare_build_id;
- break;
+ case DSO__ORIG_BUILDID: {
+ char build_id_hex[BUILD_ID_SIZE * 2 + 1];
+
+ if (!self->has_build_id)
+ continue;
+
+ build_id__sprintf(self->build_id,
+ sizeof(self->build_id),
+ build_id_hex);
+ snprintf(name, size,
+ "/usr/lib/debug/.build-id/%.2s/%s.debug",
+ build_id_hex, build_id_hex + 2);
}
- self->origin++;
- /* Fall thru */
+ break;
case DSO__ORIG_DSO:
snprintf(name, size, "%s", self->long_name);
break;
break;
default:
- goto out;
+ /*
+ * If we wanted a full symtab but no image had one,
+ * relax our requirements and repeat the search.
+ */
+ if (want_symtab) {
+ want_symtab = 0;
+ self->origin = DSO__ORIG_BUILD_ID_CACHE;
+ } else
+ continue;
}
- if (self->has_build_id) {
- if (filename__read_build_id(name, build_id,
- sizeof(build_id)) < 0)
- goto more;
-compare_build_id:
- if (!dso__build_id_equal(self, build_id))
- goto more;
- }
-open_file:
+ /* Name is now the name of the next image to try */
fd = open(name, O_RDONLY);
- } while (fd < 0);
+ if (fd < 0)
+ continue;
- ret = dso__load_sym(self, map, name, fd, filter, 0);
- close(fd);
+ ret = dso__load_sym(self, map, name, fd, filter, 0,
+ want_symtab);
+ close(fd);
- /*
- * Some people seem to have debuginfo files _WITHOUT_ debug info!?!?
- */
- if (!ret)
- goto more;
+ /*
+ * Some people seem to have debuginfo files _WITHOUT_ debug
+ * info!?!?
+ */
+ if (!ret)
+ continue;
- if (ret > 0) {
- int nr_plt = dso__synthesize_plt_symbols(self, map, filter);
- if (nr_plt > 0)
- ret += nr_plt;
+ if (ret > 0) {
+ int nr_plt = dso__synthesize_plt_symbols(self, map, filter);
+ if (nr_plt > 0)
+ ret += nr_plt;
+ break;
+ }
}
-out:
+
free(name);
if (ret < 0 && strstr(self->name, " (deleted)") != NULL)
return 0;
{
struct dirent *dent;
DIR *dir = opendir(dir_name);
+ int ret = 0;
if (!dir) {
pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
snprintf(path, sizeof(path), "%s/%s",
dir_name, dent->d_name);
- if (map_groups__set_modules_path_dir(self, path) < 0)
- goto failure;
+ ret = map_groups__set_modules_path_dir(self, path);
+ if (ret < 0)
+ goto out;
} else {
char *dot = strrchr(dent->d_name, '.'),
dso_name[PATH_MAX];
dir_name, dent->d_name);
long_name = strdup(path);
- if (long_name == NULL)
- goto failure;
+ if (long_name == NULL) {
+ ret = -1;
+ goto out;
+ }
dso__set_long_name(map->dso, long_name);
+ map->dso->lname_alloc = 1;
dso__kernel_module_get_build_id(map->dso, "");
}
}
- return 0;
- failure:
+ out:
closedir(dir);
- return -1;
+ return ret;
}
static char *get_kernel_version(const char *root_dir)
{
int err = -1, fd;
- if (self->has_build_id) {
- u8 build_id[BUILD_ID_SIZE];
-
- if (filename__read_build_id(vmlinux, build_id,
- sizeof(build_id)) < 0) {
- pr_debug("No build_id in %s, ignoring it\n", vmlinux);
- return -1;
- }
- if (!dso__build_id_equal(self, build_id)) {
- char expected_build_id[BUILD_ID_SIZE * 2 + 1],
- vmlinux_build_id[BUILD_ID_SIZE * 2 + 1];
-
- build_id__sprintf(self->build_id,
- sizeof(self->build_id),
- expected_build_id);
- build_id__sprintf(build_id, sizeof(build_id),
- vmlinux_build_id);
- pr_debug("build_id in %s is %s while expected is %s, "
- "ignoring it\n", vmlinux, vmlinux_build_id,
- expected_build_id);
- return -1;
- }
- }
-
fd = open(vmlinux, O_RDONLY);
if (fd < 0)
return -1;
dso__set_loaded(self, map->type);
- err = dso__load_sym(self, map, vmlinux, fd, filter, 0);
+ err = dso__load_sym(self, map, vmlinux, fd, filter, 0, 0);
close(fd);
if (err > 0)
return -1;
}
+void symbol__exit(void)
+{
+ strlist__delete(symbol_conf.sym_list);
+ strlist__delete(symbol_conf.dso_list);
+ strlist__delete(symbol_conf.comm_list);
+ vmlinux_path__exit();
+ symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL;
+}
+
int machines__create_kernel_maps(struct rb_root *self, pid_t pid)
{
struct machine *machine = machines__findnew(self, pid);
git://bbs.cooldavid.org / net-next-2.6.git / commitdiff