github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 10:04:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

perf unwind-libdw: Wire up e_flags for CSKY

Browse Source 
Wire up the e_flags now it can be read for a thread. The e_flags
encode the CSKY ABI level and this can impact which perf registers
need setting up for unwinding.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Aditya Bodkhe <aditya.b1@linux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.ibm.com>
Cc: Chun-Tse Shao <ctshao@google.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergei Trofimovich <slyich@gmail.com>
Cc: Shimin Guo <shimin.guo@skydio.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Swapnil Sapkal <swapnil.sapkal@amd.com>
Cc: Tianyou Li <tianyou.li@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2026-01-23 14:22:09 -08:00 committed by Arnaldo Carvalho de Melo
parent 0403930f7b
commit 2becdd163a
2 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
tools/perf/util/unwind-libdw.c
View File

@ -213,7 +213,6 @@ static bool memory_read(Dwfl *dwfl __maybe_unused, Dwarf_Addr addr, Dwarf_Word *
{
struct dwfl_ui_thread_info *dwfl_ui_ti = arg;
struct unwind_info *ui = dwfl_ui_ti->ui;
uint16_t e_machine = thread__e_machine(ui->thread, ui->machine, /*e_flags=*/NULL);
struct stack_dump *stack = &ui->sample->user_stack;
u64 start, end;
int offset;
@ -223,7 +222,7 @@ static bool memory_read(Dwfl *dwfl __maybe_unused, Dwarf_Addr addr, Dwarf_Word *
return false;
ret = perf_reg_value(&start, ui->sample->user_regs,
perf_arch_reg_sp(e_machine));
perf_arch_reg_sp(ui->e_machine));
if (ret)
return false;
@ -260,7 +259,7 @@ static bool libdw_set_initial_registers(Dwfl_Thread *thread, void *arg)
int max_dwarf_reg = 0;
bool ret;
uint16_t e_machine = ui->e_machine;
int e_flags = 0;
int e_flags = ui->e_flags;
uint64_t ip_perf_reg = perf_arch_reg_ip(e_machine);
Dwarf_Word val = 0;
@ -348,7 +347,8 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
{
struct maps *maps = thread__maps(thread);
struct machine *machine = maps__machine(maps);
uint16_t e_machine = thread__e_machine(thread, machine, /*e_flags=*/NULL);
uint32_t e_flags = 0;
uint16_t e_machine = thread__e_machine(thread, machine, &e_flags);
struct dwfl_ui_thread_info *dwfl_ui_ti;
static struct unwind_info *ui;
Dwfl *dwfl;
@ -370,6 +370,7 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
.arg = arg,
.max_stack = max_stack,
.e_machine = e_machine,
.e_flags = e_flags,
.best_effort = best_effort
};

1
tools/perf/util/unwind-libdw.h
View File

@ -20,6 +20,7 @@ struct unwind_info {
void *arg;
int max_stack;
int idx;
uint32_t e_flags;
uint16_t e_machine;
bool best_effort;
struct unwind_entry entries[];