diff options
Diffstat (limited to 'tools/perf/arch/arm')
| -rw-r--r-- | tools/perf/arch/arm/Build | 2 | ||||
| -rw-r--r-- | tools/perf/arch/arm/Makefile | 2 | ||||
| -rw-r--r-- | tools/perf/arch/arm/entry/syscalls/syscall.tbl | 489 | ||||
| -rw-r--r-- | tools/perf/arch/arm/include/arch-tests.h | 7 | ||||
| -rw-r--r-- | tools/perf/arch/arm/include/dwarf-regs-table.h | 10 | ||||
| -rw-r--r-- | tools/perf/arch/arm/include/perf_regs.h | 15 | ||||
| -rw-r--r-- | tools/perf/arch/arm/tests/Build | 5 | ||||
| -rw-r--r-- | tools/perf/arch/arm/tests/arch-tests.c | 12 | ||||
| -rw-r--r-- | tools/perf/arch/arm/tests/dwarf-unwind.c | 63 | ||||
| -rw-r--r-- | tools/perf/arch/arm/tests/regs_load.S | 59 | ||||
| -rw-r--r-- | tools/perf/arch/arm/tests/vectors-page.c | 25 | ||||
| -rw-r--r-- | tools/perf/arch/arm/util/Build | 1 | ||||
| -rw-r--r-- | tools/perf/arch/arm/util/auxtrace.c | 220 | ||||
| -rw-r--r-- | tools/perf/arch/arm/util/cs-etm.c | 926 | ||||
| -rw-r--r-- | tools/perf/arch/arm/util/cs-etm.h | 12 | ||||
| -rw-r--r-- | tools/perf/arch/arm/util/pmu.c | 46 |
16 files changed, 1894 insertions, 0 deletions
diff --git a/tools/perf/arch/arm/Build b/tools/perf/arch/arm/Build new file mode 100644 index 000000000..317425aa3 --- /dev/null +++ b/tools/perf/arch/arm/Build @@ -0,0 +1,2 @@ +perf-util-y += util/ +perf-test-$(CONFIG_DWARF_UNWIND) += tests/ diff --git a/tools/perf/arch/arm/Makefile b/tools/perf/arch/arm/Makefile new file mode 100644 index 000000000..8b59ce8ef --- /dev/null +++ b/tools/perf/arch/arm/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +PERF_HAVE_JITDUMP := 1 diff --git a/tools/perf/arch/arm/entry/syscalls/syscall.tbl b/tools/perf/arch/arm/entry/syscalls/syscall.tbl new file mode 100644 index 000000000..55717ed32 --- /dev/null +++ b/tools/perf/arch/arm/entry/syscalls/syscall.tbl @@ -0,0 +1,489 @@ +# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note +# +# Linux system call numbers and entry vectors +# +# The format is: +# <num> <abi> <name> [<entry point> [<oabi compat entry point>]] +# +# Where abi is: +# common - for system calls shared between oabi and eabi (may have compat) +# oabi - for oabi-only system calls (may have compat) +# eabi - for eabi-only system calls +# +# For each syscall number, "common" is mutually exclusive with oabi and eabi +# +0 common restart_syscall sys_restart_syscall +1 common exit sys_exit +2 common fork sys_fork +3 common read sys_read +4 common write sys_write +5 common open sys_open +6 common close sys_close +# 7 was sys_waitpid +8 common creat sys_creat +9 common link sys_link +10 common unlink sys_unlink +11 common execve sys_execve +12 common chdir sys_chdir +13 oabi time sys_time32 +14 common mknod sys_mknod +15 common chmod sys_chmod +16 common lchown sys_lchown16 +# 17 was sys_break +# 18 was sys_stat +19 common lseek sys_lseek +20 common getpid sys_getpid +21 common mount sys_mount +22 oabi umount sys_oldumount +23 common setuid sys_setuid16 +24 common getuid sys_getuid16 +25 oabi stime sys_stime32 +26 common ptrace sys_ptrace +27 oabi alarm sys_alarm +# 28 was sys_fstat +29 common pause sys_pause +30 oabi utime sys_utime32 +# 31 was sys_stty +# 32 was sys_gtty +33 common access sys_access +34 common nice sys_nice +# 35 was sys_ftime +36 common sync sys_sync +37 common kill sys_kill +38 common rename sys_rename +39 common mkdir sys_mkdir +40 common rmdir sys_rmdir +41 common dup sys_dup +42 common pipe sys_pipe +43 common times sys_times +# 44 was sys_prof +45 common brk sys_brk +46 common setgid sys_setgid16 +47 common getgid sys_getgid16 +# 48 was sys_signal +49 common geteuid sys_geteuid16 +50 common getegid sys_getegid16 +51 common acct sys_acct +52 common umount2 sys_umount +# 53 was sys_lock +54 common ioctl sys_ioctl +55 common fcntl sys_fcntl +# 56 was sys_mpx +57 common setpgid sys_setpgid +# 58 was sys_ulimit +# 59 was sys_olduname +60 common umask sys_umask +61 common chroot sys_chroot +62 common ustat sys_ustat +63 common dup2 sys_dup2 +64 common getppid sys_getppid +65 common getpgrp sys_getpgrp +66 common setsid sys_setsid +67 common sigaction sys_sigaction +# 68 was sys_sgetmask +# 69 was sys_ssetmask +70 common setreuid sys_setreuid16 +71 common setregid sys_setregid16 +72 common sigsuspend sys_sigsuspend +73 common sigpending sys_sigpending +74 common sethostname sys_sethostname +75 common setrlimit sys_setrlimit +# Back compat 2GB limited rlimit +76 oabi getrlimit sys_old_getrlimit +77 common getrusage sys_getrusage +78 common gettimeofday sys_gettimeofday +79 common settimeofday sys_settimeofday +80 common getgroups sys_getgroups16 +81 common setgroups sys_setgroups16 +82 oabi select sys_old_select +83 common symlink sys_symlink +# 84 was sys_lstat +85 common readlink sys_readlink +86 common uselib sys_uselib +87 common swapon sys_swapon +88 common reboot sys_reboot +89 oabi readdir sys_old_readdir +90 oabi mmap sys_old_mmap +91 common munmap sys_munmap +92 common truncate sys_truncate +93 common ftruncate sys_ftruncate +94 common fchmod sys_fchmod +95 common fchown sys_fchown16 +96 common getpriority sys_getpriority +97 common setpriority sys_setpriority +# 98 was sys_profil +99 common statfs sys_statfs +100 common fstatfs sys_fstatfs +# 101 was sys_ioperm +102 oabi socketcall sys_socketcall sys_oabi_socketcall +103 common syslog sys_syslog +104 common setitimer sys_setitimer +105 common getitimer sys_getitimer +106 common stat sys_newstat +107 common lstat sys_newlstat +108 common fstat sys_newfstat +# 109 was sys_uname +# 110 was sys_iopl +111 common vhangup sys_vhangup +# 112 was sys_idle +# syscall to call a syscall! +113 oabi syscall sys_syscall +114 common wait4 sys_wait4 +115 common swapoff sys_swapoff +116 common sysinfo sys_sysinfo +117 oabi ipc sys_ipc sys_oabi_ipc +118 common fsync sys_fsync +119 common sigreturn sys_sigreturn_wrapper +120 common clone sys_clone +121 common setdomainname sys_setdomainname +122 common uname sys_newuname +# 123 was sys_modify_ldt +124 common adjtimex sys_adjtimex_time32 +125 common mprotect sys_mprotect +126 common sigprocmask sys_sigprocmask +# 127 was sys_create_module +128 common init_module sys_init_module +129 common delete_module sys_delete_module +# 130 was sys_get_kernel_syms +131 common quotactl sys_quotactl +132 common getpgid sys_getpgid +133 common fchdir sys_fchdir +134 common bdflush sys_ni_syscall +135 common sysfs sys_sysfs +136 common personality sys_personality +# 137 was sys_afs_syscall +138 common setfsuid sys_setfsuid16 +139 common setfsgid sys_setfsgid16 +140 common _llseek sys_llseek +141 common getdents sys_getdents +142 common _newselect sys_select +143 common flock sys_flock +144 common msync sys_msync +145 common readv sys_readv +146 common writev sys_writev +147 common getsid sys_getsid +148 common fdatasync sys_fdatasync +149 common _sysctl sys_ni_syscall +150 common mlock sys_mlock +151 common munlock sys_munlock +152 common mlockall sys_mlockall +153 common munlockall sys_munlockall +154 common sched_setparam sys_sched_setparam +155 common sched_getparam sys_sched_getparam +156 common sched_setscheduler sys_sched_setscheduler +157 common sched_getscheduler sys_sched_getscheduler +158 common sched_yield sys_sched_yield +159 common sched_get_priority_max sys_sched_get_priority_max +160 common sched_get_priority_min sys_sched_get_priority_min +161 common sched_rr_get_interval sys_sched_rr_get_interval_time32 +162 common nanosleep sys_nanosleep_time32 +163 common mremap sys_mremap +164 common setresuid sys_setresuid16 +165 common getresuid sys_getresuid16 +# 166 was sys_vm86 +# 167 was sys_query_module +168 common poll sys_poll +169 common nfsservctl +170 common setresgid sys_setresgid16 +171 common getresgid sys_getresgid16 +172 common prctl sys_prctl +173 common rt_sigreturn sys_rt_sigreturn_wrapper +174 common rt_sigaction sys_rt_sigaction +175 common rt_sigprocmask sys_rt_sigprocmask +176 common rt_sigpending sys_rt_sigpending +177 common rt_sigtimedwait sys_rt_sigtimedwait_time32 +178 common rt_sigqueueinfo sys_rt_sigqueueinfo +179 common rt_sigsuspend sys_rt_sigsuspend +180 common pread64 sys_pread64 sys_oabi_pread64 +181 common pwrite64 sys_pwrite64 sys_oabi_pwrite64 +182 common chown sys_chown16 +183 common getcwd sys_getcwd +184 common capget sys_capget +185 common capset sys_capset +186 common sigaltstack sys_sigaltstack +187 common sendfile sys_sendfile +# 188 reserved +# 189 reserved +190 common vfork sys_vfork +# SuS compliant getrlimit +191 common ugetrlimit sys_getrlimit +192 common mmap2 sys_mmap2 +193 common truncate64 sys_truncate64 sys_oabi_truncate64 +194 common ftruncate64 sys_ftruncate64 sys_oabi_ftruncate64 +195 common stat64 sys_stat64 sys_oabi_stat64 +196 common lstat64 sys_lstat64 sys_oabi_lstat64 +197 common fstat64 sys_fstat64 sys_oabi_fstat64 +198 common lchown32 sys_lchown +199 common getuid32 sys_getuid +200 common getgid32 sys_getgid +201 common geteuid32 sys_geteuid +202 common getegid32 sys_getegid +203 common setreuid32 sys_setreuid +204 common setregid32 sys_setregid +205 common getgroups32 sys_getgroups +206 common setgroups32 sys_setgroups +207 common fchown32 sys_fchown +208 common setresuid32 sys_setresuid +209 common getresuid32 sys_getresuid +210 common setresgid32 sys_setresgid +211 common getresgid32 sys_getresgid +212 common chown32 sys_chown +213 common setuid32 sys_setuid +214 common setgid32 sys_setgid +215 common setfsuid32 sys_setfsuid +216 common setfsgid32 sys_setfsgid +217 common getdents64 sys_getdents64 +218 common pivot_root sys_pivot_root +219 common mincore sys_mincore +220 common madvise sys_madvise +221 common fcntl64 sys_fcntl64 sys_oabi_fcntl64 +# 222 for tux +# 223 is unused +224 common gettid sys_gettid +225 common readahead sys_readahead sys_oabi_readahead +226 common setxattr sys_setxattr +227 common lsetxattr sys_lsetxattr +228 common fsetxattr sys_fsetxattr +229 common getxattr sys_getxattr +230 common lgetxattr sys_lgetxattr +231 common fgetxattr sys_fgetxattr +232 common listxattr sys_listxattr +233 common llistxattr sys_llistxattr +234 common flistxattr sys_flistxattr +235 common removexattr sys_removexattr +236 common lremovexattr sys_lremovexattr +237 common fremovexattr sys_fremovexattr +238 common tkill sys_tkill +239 common sendfile64 sys_sendfile64 +240 common futex sys_futex_time32 +241 common sched_setaffinity sys_sched_setaffinity +242 common sched_getaffinity sys_sched_getaffinity +243 common io_setup sys_io_setup +244 common io_destroy sys_io_destroy +245 common io_getevents sys_io_getevents_time32 +246 common io_submit sys_io_submit +247 common io_cancel sys_io_cancel +248 common exit_group sys_exit_group +249 common lookup_dcookie sys_ni_syscall +250 common epoll_create sys_epoll_create +251 common epoll_ctl sys_epoll_ctl sys_oabi_epoll_ctl +252 common epoll_wait sys_epoll_wait +253 common remap_file_pages sys_remap_file_pages +# 254 for set_thread_area +# 255 for get_thread_area +256 common set_tid_address sys_set_tid_address +257 common timer_create sys_timer_create +258 common timer_settime sys_timer_settime32 +259 common timer_gettime sys_timer_gettime32 +260 common timer_getoverrun sys_timer_getoverrun +261 common timer_delete sys_timer_delete +262 common clock_settime sys_clock_settime32 +263 common clock_gettime sys_clock_gettime32 +264 common clock_getres sys_clock_getres_time32 +265 common clock_nanosleep sys_clock_nanosleep_time32 +266 common statfs64 sys_statfs64_wrapper +267 common fstatfs64 sys_fstatfs64_wrapper +268 common tgkill sys_tgkill +269 common utimes sys_utimes_time32 +270 common arm_fadvise64_64 sys_arm_fadvise64_64 +271 common pciconfig_iobase sys_pciconfig_iobase +272 common pciconfig_read sys_pciconfig_read +273 common pciconfig_write sys_pciconfig_write +274 common mq_open sys_mq_open +275 common mq_unlink sys_mq_unlink +276 common mq_timedsend sys_mq_timedsend_time32 +277 common mq_timedreceive sys_mq_timedreceive_time32 +278 common mq_notify sys_mq_notify +279 common mq_getsetattr sys_mq_getsetattr +280 common waitid sys_waitid +281 common socket sys_socket +282 common bind sys_bind sys_oabi_bind +283 common connect sys_connect sys_oabi_connect +284 common listen sys_listen +285 common accept sys_accept +286 common getsockname sys_getsockname +287 common getpeername sys_getpeername +288 common socketpair sys_socketpair +289 common send sys_send +290 common sendto sys_sendto sys_oabi_sendto +291 common recv sys_recv +292 common recvfrom sys_recvfrom +293 common shutdown sys_shutdown +294 common setsockopt sys_setsockopt +295 common getsockopt sys_getsockopt +296 common sendmsg sys_sendmsg sys_oabi_sendmsg +297 common recvmsg sys_recvmsg +298 common semop sys_semop sys_oabi_semop +299 common semget sys_semget +300 common semctl sys_old_semctl +301 common msgsnd sys_msgsnd +302 common msgrcv sys_msgrcv +303 common msgget sys_msgget +304 common msgctl sys_old_msgctl +305 common shmat sys_shmat +306 common shmdt sys_shmdt +307 common shmget sys_shmget +308 common shmctl sys_old_shmctl +309 common add_key sys_add_key +310 common request_key sys_request_key +311 common keyctl sys_keyctl +312 common semtimedop sys_semtimedop_time32 sys_oabi_semtimedop +313 common vserver +314 common ioprio_set sys_ioprio_set +315 common ioprio_get sys_ioprio_get +316 common inotify_init sys_inotify_init +317 common inotify_add_watch sys_inotify_add_watch +318 common inotify_rm_watch sys_inotify_rm_watch +319 common mbind sys_mbind +320 common get_mempolicy sys_get_mempolicy +321 common set_mempolicy sys_set_mempolicy +322 common openat sys_openat +323 common mkdirat sys_mkdirat +324 common mknodat sys_mknodat +325 common fchownat sys_fchownat +326 common futimesat sys_futimesat_time32 +327 common fstatat64 sys_fstatat64 sys_oabi_fstatat64 +328 common unlinkat sys_unlinkat +329 common renameat sys_renameat +330 common linkat sys_linkat +331 common symlinkat sys_symlinkat +332 common readlinkat sys_readlinkat +333 common fchmodat sys_fchmodat +334 common faccessat sys_faccessat +335 common pselect6 sys_pselect6_time32 +336 common ppoll sys_ppoll_time32 +337 common unshare sys_unshare +338 common set_robust_list sys_set_robust_list +339 common get_robust_list sys_get_robust_list +340 common splice sys_splice +341 common arm_sync_file_range sys_sync_file_range2 +342 common tee sys_tee +343 common vmsplice sys_vmsplice +344 common move_pages sys_move_pages +345 common getcpu sys_getcpu +346 common epoll_pwait sys_epoll_pwait +347 common kexec_load sys_kexec_load +348 common utimensat sys_utimensat_time32 +349 common signalfd sys_signalfd +350 common timerfd_create sys_timerfd_create +351 common eventfd sys_eventfd +352 common fallocate sys_fallocate +353 common timerfd_settime sys_timerfd_settime32 +354 common timerfd_gettime sys_timerfd_gettime32 +355 common signalfd4 sys_signalfd4 +356 common eventfd2 sys_eventfd2 +357 common epoll_create1 sys_epoll_create1 +358 common dup3 sys_dup3 +359 common pipe2 sys_pipe2 +360 common inotify_init1 sys_inotify_init1 +361 common preadv sys_preadv +362 common pwritev sys_pwritev +363 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo +364 common perf_event_open sys_perf_event_open +365 common recvmmsg sys_recvmmsg_time32 +366 common accept4 sys_accept4 +367 common fanotify_init sys_fanotify_init +368 common fanotify_mark sys_fanotify_mark +369 common prlimit64 sys_prlimit64 +370 common name_to_handle_at sys_name_to_handle_at +371 common open_by_handle_at sys_open_by_handle_at +372 common clock_adjtime sys_clock_adjtime32 +373 common syncfs sys_syncfs +374 common sendmmsg sys_sendmmsg +375 common setns sys_setns +376 common process_vm_readv sys_process_vm_readv +377 common process_vm_writev sys_process_vm_writev +378 common kcmp sys_kcmp +379 common finit_module sys_finit_module +380 common sched_setattr sys_sched_setattr +381 common sched_getattr sys_sched_getattr +382 common renameat2 sys_renameat2 +383 common seccomp sys_seccomp +384 common getrandom sys_getrandom +385 common memfd_create sys_memfd_create +386 common bpf sys_bpf +387 common execveat sys_execveat +388 common userfaultfd sys_userfaultfd +389 common membarrier sys_membarrier +390 common mlock2 sys_mlock2 +391 common copy_file_range sys_copy_file_range +392 common preadv2 sys_preadv2 +393 common pwritev2 sys_pwritev2 +394 common pkey_mprotect sys_pkey_mprotect +395 common pkey_alloc sys_pkey_alloc +396 common pkey_free sys_pkey_free +397 common statx sys_statx +398 common rseq sys_rseq +399 common io_pgetevents sys_io_pgetevents_time32 +400 common migrate_pages sys_migrate_pages +401 common kexec_file_load sys_kexec_file_load +# 402 is unused +403 common clock_gettime64 sys_clock_gettime +404 common clock_settime64 sys_clock_settime +405 common clock_adjtime64 sys_clock_adjtime +406 common clock_getres_time64 sys_clock_getres +407 common clock_nanosleep_time64 sys_clock_nanosleep +408 common timer_gettime64 sys_timer_gettime +409 common timer_settime64 sys_timer_settime +410 common timerfd_gettime64 sys_timerfd_gettime +411 common timerfd_settime64 sys_timerfd_settime +412 common utimensat_time64 sys_utimensat +413 common pselect6_time64 sys_pselect6 +414 common ppoll_time64 sys_ppoll +416 common io_pgetevents_time64 sys_io_pgetevents +417 common recvmmsg_time64 sys_recvmmsg +418 common mq_timedsend_time64 sys_mq_timedsend +419 common mq_timedreceive_time64 sys_mq_timedreceive +420 common semtimedop_time64 sys_semtimedop +421 common rt_sigtimedwait_time64 sys_rt_sigtimedwait +422 common futex_time64 sys_futex +423 common sched_rr_get_interval_time64 sys_sched_rr_get_interval +424 common pidfd_send_signal sys_pidfd_send_signal +425 common io_uring_setup sys_io_uring_setup +426 common io_uring_enter sys_io_uring_enter +427 common io_uring_register sys_io_uring_register +428 common open_tree sys_open_tree +429 common move_mount sys_move_mount +430 common fsopen sys_fsopen +431 common fsconfig sys_fsconfig +432 common fsmount sys_fsmount +433 common fspick sys_fspick +434 common pidfd_open sys_pidfd_open +435 common clone3 sys_clone3 +436 common close_range sys_close_range +437 common openat2 sys_openat2 +438 common pidfd_getfd sys_pidfd_getfd +439 common faccessat2 sys_faccessat2 +440 common process_madvise sys_process_madvise +441 common epoll_pwait2 sys_epoll_pwait2 +442 common mount_setattr sys_mount_setattr +443 common quotactl_fd sys_quotactl_fd +444 common landlock_create_ruleset sys_landlock_create_ruleset +445 common landlock_add_rule sys_landlock_add_rule +446 common landlock_restrict_self sys_landlock_restrict_self +# 447 reserved for memfd_secret +448 common process_mrelease sys_process_mrelease +449 common futex_waitv sys_futex_waitv +450 common set_mempolicy_home_node sys_set_mempolicy_home_node +451 common cachestat sys_cachestat +452 common fchmodat2 sys_fchmodat2 +453 common map_shadow_stack sys_map_shadow_stack +454 common futex_wake sys_futex_wake +455 common futex_wait sys_futex_wait +456 common futex_requeue sys_futex_requeue +457 common statmount sys_statmount +458 common listmount sys_listmount +459 common lsm_get_self_attr sys_lsm_get_self_attr +460 common lsm_set_self_attr sys_lsm_set_self_attr +461 common lsm_list_modules sys_lsm_list_modules +462 common mseal sys_mseal +463 common setxattrat sys_setxattrat +464 common getxattrat sys_getxattrat +465 common listxattrat sys_listxattrat +466 common removexattrat sys_removexattrat +467 common open_tree_attr sys_open_tree_attr +468 common file_getattr sys_file_getattr +469 common file_setattr sys_file_setattr +470 common listns sys_listns +471 common rseq_slice_yield sys_rseq_slice_yield +472 common fchroot sys_fchroot diff --git a/tools/perf/arch/arm/include/arch-tests.h b/tools/perf/arch/arm/include/arch-tests.h new file mode 100644 index 000000000..452b3d904 --- /dev/null +++ b/tools/perf/arch/arm/include/arch-tests.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef ARCH_TESTS_H +#define ARCH_TESTS_H + +extern struct test_suite *arch_tests[]; + +#endif diff --git a/tools/perf/arch/arm/include/dwarf-regs-table.h b/tools/perf/arch/arm/include/dwarf-regs-table.h new file mode 100644 index 000000000..5a45046fa --- /dev/null +++ b/tools/perf/arch/arm/include/dwarf-regs-table.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifdef DEFINE_DWARF_REGSTR_TABLE +/* This is included in perf/util/dwarf-regs.c */ + +static const char * const arm_regstr_tbl[] = { + "%r0", "%r1", "%r2", "%r3", "%r4", + "%r5", "%r6", "%r7", "%r8", "%r9", "%r10", + "%fp", "%ip", "%sp", "%lr", "%pc", +}; +#endif diff --git a/tools/perf/arch/arm/include/perf_regs.h b/tools/perf/arch/arm/include/perf_regs.h new file mode 100644 index 000000000..20c54766e --- /dev/null +++ b/tools/perf/arch/arm/include/perf_regs.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include <stdlib.h> +#include <linux/types.h> +#include "../../../../arch/arm/include/uapi/asm/perf_regs.h" + +void perf_regs_load(u64 *regs); + +#define PERF_REGS_MASK ((1ULL << PERF_REG_ARM_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_ARM_MAX +#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 + +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/arm/tests/Build b/tools/perf/arch/arm/tests/Build new file mode 100644 index 000000000..599efa545 --- /dev/null +++ b/tools/perf/arch/arm/tests/Build @@ -0,0 +1,5 @@ +perf-test-y += regs_load.o +perf-test-y += dwarf-unwind.o +perf-test-y += vectors-page.o + +perf-test-y += arch-tests.o diff --git a/tools/perf/arch/arm/tests/arch-tests.c b/tools/perf/arch/arm/tests/arch-tests.c new file mode 100644 index 000000000..69561111c --- /dev/null +++ b/tools/perf/arch/arm/tests/arch-tests.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <string.h> +#include "tests/tests.h" +#include "arch-tests.h" + +struct test_suite *arch_tests[] = { +#ifdef HAVE_DWARF_UNWIND_SUPPORT + &suite__dwarf_unwind, +#endif + &suite__vectors_page, + NULL, +}; diff --git a/tools/perf/arch/arm/tests/dwarf-unwind.c b/tools/perf/arch/arm/tests/dwarf-unwind.c new file mode 100644 index 000000000..f421910e0 --- /dev/null +++ b/tools/perf/arch/arm/tests/dwarf-unwind.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <string.h> +#include "perf_regs.h" +#include "thread.h" +#include "map.h" +#include "maps.h" +#include "event.h" +#include "debug.h" +#include "tests/tests.h" + +#define STACK_SIZE 8192 + +static int sample_ustack(struct perf_sample *sample, + struct thread *thread, u64 *regs) +{ + struct stack_dump *stack = &sample->user_stack; + struct map *map; + unsigned long sp; + u64 stack_size, *buf; + + buf = malloc(STACK_SIZE); + if (!buf) { + pr_debug("failed to allocate sample uregs data\n"); + return -1; + } + + sp = (unsigned long) regs[PERF_REG_ARM_SP]; + + map = maps__find(thread__maps(thread), (u64)sp); + if (!map) { + pr_debug("failed to get stack map\n"); + free(buf); + return -1; + } + + stack_size = map__end(map) - sp; + stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size; + + memcpy(buf, (void *) sp, stack_size); + stack->data = (char *) buf; + stack->size = stack_size; + return 0; +} + +int test__arch_unwind_sample(struct perf_sample *sample, + struct thread *thread) +{ + struct regs_dump *regs = perf_sample__user_regs(sample); + u64 *buf; + + buf = calloc(1, sizeof(u64) * PERF_REGS_MAX); + if (!buf) { + pr_debug("failed to allocate sample uregs data\n"); + return -1; + } + + perf_regs_load(buf); + regs->abi = PERF_SAMPLE_REGS_ABI; + regs->regs = buf; + regs->mask = PERF_REGS_MASK; + + return sample_ustack(sample, thread, buf); +} diff --git a/tools/perf/arch/arm/tests/regs_load.S b/tools/perf/arch/arm/tests/regs_load.S new file mode 100644 index 000000000..4284307d7 --- /dev/null +++ b/tools/perf/arch/arm/tests/regs_load.S @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <linux/linkage.h> + +#define R0 0x00 +#define R1 0x08 +#define R2 0x10 +#define R3 0x18 +#define R4 0x20 +#define R5 0x28 +#define R6 0x30 +#define R7 0x38 +#define R8 0x40 +#define R9 0x48 +#define SL 0x50 +#define FP 0x58 +#define IP 0x60 +#define SP 0x68 +#define LR 0x70 +#define PC 0x78 + +/* + * Implementation of void perf_regs_load(u64 *regs); + * + * This functions fills in the 'regs' buffer from the actual registers values, + * in the way the perf built-in unwinding test expects them: + * - the PC at the time at the call to this function. Since this function + * is called using a bl instruction, the PC value is taken from LR. + * The built-in unwinding test then unwinds the call stack from the dwarf + * information in unwind__get_entries. + * + * Notes: + * - the 8 bytes stride in the registers offsets comes from the fact + * that the registers are stored in an u64 array (u64 *regs), + * - the regs buffer needs to be zeroed before the call to this function, + * in this case using a calloc in dwarf-unwind.c. + */ + +.text +.type perf_regs_load,%function +SYM_FUNC_START(perf_regs_load) + str r0, [r0, #R0] + str r1, [r0, #R1] + str r2, [r0, #R2] + str r3, [r0, #R3] + str r4, [r0, #R4] + str r5, [r0, #R5] + str r6, [r0, #R6] + str r7, [r0, #R7] + str r8, [r0, #R8] + str r9, [r0, #R9] + str sl, [r0, #SL] + str fp, [r0, #FP] + str ip, [r0, #IP] + str sp, [r0, #SP] + str lr, [r0, #LR] + str lr, [r0, #PC] // store pc as lr in order to skip the call + // to this function + mov pc, lr +SYM_FUNC_END(perf_regs_load) diff --git a/tools/perf/arch/arm/tests/vectors-page.c b/tools/perf/arch/arm/tests/vectors-page.c new file mode 100644 index 000000000..55a835837 --- /dev/null +++ b/tools/perf/arch/arm/tests/vectors-page.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <string.h> +#include <linux/compiler.h> + +#include "debug.h" +#include "tests/tests.h" +#include "util/find-map.c" + +#define VECTORS__MAP_NAME "[vectors]" + +static int test__vectors_page(struct test_suite *test __maybe_unused, int subtest __maybe_unused) +{ + void *start, *end; + + if (find_map(&start, &end, VECTORS__MAP_NAME)) { + pr_err("%s not found, is CONFIG_KUSER_HELPERS enabled?\n", + VECTORS__MAP_NAME); + return TEST_FAIL; + } + + return TEST_OK; +} + +DEFINE_SUITE("Vectors page", vectors_page); diff --git a/tools/perf/arch/arm/util/Build b/tools/perf/arch/arm/util/Build new file mode 100644 index 000000000..768ae5d16 --- /dev/null +++ b/tools/perf/arch/arm/util/Build @@ -0,0 +1 @@ +perf-util-y += pmu.o auxtrace.o cs-etm.o diff --git a/tools/perf/arch/arm/util/auxtrace.c b/tools/perf/arch/arm/util/auxtrace.c new file mode 100644 index 000000000..27bb14c8b --- /dev/null +++ b/tools/perf/arch/arm/util/auxtrace.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright(C) 2015 Linaro Limited. All rights reserved. + * Author: Mathieu Poirier <mathieu.poirier@linaro.org> + */ + +#include <dirent.h> +#include <errno.h> +#include <stdbool.h> +#include <linux/coresight-pmu.h> +#include <stdlib.h> +#include <api/fs/fs.h> + +#include "../../../util/auxtrace.h" +#include "../../../util/debug.h" +#include "../../../util/evlist.h" +#include "../../../util/pmu.h" +#include "../../../util/pmus.h" +#include "cs-etm.h" +#include "arm-spe.h" +#include "hisi-ptt.h" + +static struct perf_pmu **find_all_arm_spe_pmus(int *nr_spes, int *err) +{ + struct perf_pmu **arm_spe_pmus = NULL; + int ret, i, nr_cpus = sysconf(_SC_NPROCESSORS_CONF); + /* arm_spe_xxxxxxxxx\0 */ + char arm_spe_pmu_name[sizeof(ARM_SPE_PMU_NAME) + 10]; + + arm_spe_pmus = calloc(nr_cpus, sizeof(struct perf_pmu *)); + if (!arm_spe_pmus) { + pr_err("spes alloc failed\n"); + *err = -ENOMEM; + return NULL; + } + + for (i = 0; i < nr_cpus; i++) { + ret = sprintf(arm_spe_pmu_name, "%s%d", ARM_SPE_PMU_NAME, i); + if (ret < 0) { + pr_err("sprintf failed\n"); + *err = -ENOMEM; + return NULL; + } + + arm_spe_pmus[*nr_spes] = perf_pmus__find(arm_spe_pmu_name); + if (arm_spe_pmus[*nr_spes]) { + pr_debug2("%s %d: arm_spe_pmu %d type %d name %s\n", + __func__, __LINE__, *nr_spes, + arm_spe_pmus[*nr_spes]->type, + arm_spe_pmus[*nr_spes]->name); + (*nr_spes)++; + } + } + + return arm_spe_pmus; +} + +static struct perf_pmu **find_all_hisi_ptt_pmus(int *nr_ptts, int *err) +{ + struct perf_pmu **hisi_ptt_pmus = NULL; + struct dirent *dent; + char path[PATH_MAX]; + DIR *dir = NULL; + int idx = 0; + + perf_pmu__event_source_devices_scnprintf(path, sizeof(path)); + dir = opendir(path); + if (!dir) { + pr_err("can't read directory '%s'\n", path); + *err = -EINVAL; + return NULL; + } + + while ((dent = readdir(dir))) { + if (strstr(dent->d_name, HISI_PTT_PMU_NAME)) + (*nr_ptts)++; + } + + if (!(*nr_ptts)) + goto out; + + hisi_ptt_pmus = calloc((*nr_ptts), sizeof(struct perf_pmu *)); + if (!hisi_ptt_pmus) { + pr_err("hisi_ptt alloc failed\n"); + *err = -ENOMEM; + goto out; + } + + rewinddir(dir); + while ((dent = readdir(dir))) { + if (strstr(dent->d_name, HISI_PTT_PMU_NAME) && idx < *nr_ptts) { + hisi_ptt_pmus[idx] = perf_pmus__find(dent->d_name); + if (hisi_ptt_pmus[idx]) + idx++; + } + } + +out: + closedir(dir); + return hisi_ptt_pmus; +} + +static struct perf_pmu *find_pmu_for_event(struct perf_pmu **pmus, + int pmu_nr, struct evsel *evsel) +{ + int i; + + if (!pmus) + return NULL; + + for (i = 0; i < pmu_nr; i++) { + if (evsel->core.attr.type == pmus[i]->type) + return pmus[i]; + } + + return NULL; +} + +struct auxtrace_record +*auxtrace_record__init(struct evlist *evlist, int *err) +{ + struct perf_pmu *cs_etm_pmu = NULL; + struct perf_pmu **arm_spe_pmus = NULL; + struct perf_pmu **hisi_ptt_pmus = NULL; + struct evsel *evsel; + struct perf_pmu *found_etm = NULL; + struct perf_pmu *found_spe = NULL; + struct perf_pmu *found_ptt = NULL; + int auxtrace_event_cnt = 0; + int nr_spes = 0; + int nr_ptts = 0; + + if (!evlist) + return NULL; + + cs_etm_pmu = perf_pmus__find(CORESIGHT_ETM_PMU_NAME); + arm_spe_pmus = find_all_arm_spe_pmus(&nr_spes, err); + hisi_ptt_pmus = find_all_hisi_ptt_pmus(&nr_ptts, err); + + evlist__for_each_entry(evlist, evsel) { + if (cs_etm_pmu && !found_etm) + found_etm = find_pmu_for_event(&cs_etm_pmu, 1, evsel); + + if (arm_spe_pmus && !found_spe) + found_spe = find_pmu_for_event(arm_spe_pmus, nr_spes, evsel); + + if (hisi_ptt_pmus && !found_ptt) + found_ptt = find_pmu_for_event(hisi_ptt_pmus, nr_ptts, evsel); + } + + free(arm_spe_pmus); + free(hisi_ptt_pmus); + + if (found_etm) + auxtrace_event_cnt++; + + if (found_spe) + auxtrace_event_cnt++; + + if (found_ptt) + auxtrace_event_cnt++; + + if (auxtrace_event_cnt > 1) { + pr_err("Concurrent AUX trace operation not currently supported\n"); + *err = -EOPNOTSUPP; + return NULL; + } + + if (found_etm) + return cs_etm_record_init(err); + +#if defined(__aarch64__) + if (found_spe) + return arm_spe_recording_init(err, found_spe); + + if (found_ptt) + return hisi_ptt_recording_init(err, found_ptt); +#endif + + /* + * Clear 'err' even if we haven't found an event - that way perf + * record can still be used even if tracers aren't present. The NULL + * return value will take care of telling the infrastructure HW tracing + * isn't available. + */ + *err = 0; + return NULL; +} + +#if defined(__arm__) +u64 compat_auxtrace_mmap__read_head(struct auxtrace_mmap *mm) +{ + struct perf_event_mmap_page *pc = mm->userpg; + u64 result; + + __asm__ __volatile__( +" ldrd %0, %H0, [%1]" + : "=&r" (result) + : "r" (&pc->aux_head), "Qo" (pc->aux_head) + ); + + return result; +} + +int compat_auxtrace_mmap__write_tail(struct auxtrace_mmap *mm, u64 tail) +{ + struct perf_event_mmap_page *pc = mm->userpg; + + /* Ensure all reads are done before we write the tail out */ + smp_mb(); + + __asm__ __volatile__( +" strd %2, %H2, [%1]" + : "=Qo" (pc->aux_tail) + : "r" (&pc->aux_tail), "r" (tail) + ); + + return 0; +} +#endif diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c new file mode 100644 index 000000000..d2861d66a --- /dev/null +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -0,0 +1,926 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright(C) 2015 Linaro Limited. All rights reserved. + * Author: Mathieu Poirier <mathieu.poirier@linaro.org> + */ +#include "../../../util/cs-etm.h" + +#include <errno.h> +#include <stdlib.h> + +#include <linux/bitops.h> +#include <linux/bits.h> +#include <linux/compiler.h> +#include <linux/coresight-pmu.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/zalloc.h> +#include <sys/stat.h> + +#include <api/fs/fs.h> +#include <internal/lib.h> // page_size + +#include "../../../util/auxtrace.h" +#include "../../../util/cpumap.h" +#include "../../../util/debug.h" +#include "../../../util/event.h" +#include "../../../util/evlist.h" +#include "../../../util/evsel.h" +#include "../../../util/evsel_config.h" +#include "../../../util/perf_api_probe.h" +#include "../../../util/pmu.h" +#include "../../../util/pmus.h" +#include "../../../util/record.h" +#include "../../../util/session.h" +#include "cs-etm.h" + +struct cs_etm_recording { + struct auxtrace_record itr; + struct perf_pmu *cs_etm_pmu; + struct evlist *evlist; + bool snapshot_mode; + size_t snapshot_size; +}; + +static const char *metadata_etmv3_ro[CS_ETM_PRIV_MAX] = { + [CS_ETM_ETMCCER] = "mgmt/etmccer", + [CS_ETM_ETMIDR] = "mgmt/etmidr", +}; + +static const char * const metadata_etmv4_ro[] = { + [CS_ETMV4_TRCIDR0] = "trcidr/trcidr0", + [CS_ETMV4_TRCIDR1] = "trcidr/trcidr1", + [CS_ETMV4_TRCIDR2] = "trcidr/trcidr2", + [CS_ETMV4_TRCIDR8] = "trcidr/trcidr8", + [CS_ETMV4_TRCAUTHSTATUS] = "mgmt/trcauthstatus", + [CS_ETMV4_TS_SOURCE] = "ts_source", +}; + +static const char * const metadata_ete_ro[] = { + [CS_ETE_TRCIDR0] = "trcidr/trcidr0", + [CS_ETE_TRCIDR1] = "trcidr/trcidr1", + [CS_ETE_TRCIDR2] = "trcidr/trcidr2", + [CS_ETE_TRCIDR8] = "trcidr/trcidr8", + [CS_ETE_TRCAUTHSTATUS] = "mgmt/trcauthstatus", + [CS_ETE_TRCDEVARCH] = "mgmt/trcdevarch", + [CS_ETE_TS_SOURCE] = "ts_source", +}; + +enum cs_etm_version { CS_NOT_PRESENT, CS_ETMV3, CS_ETMV4, CS_ETE }; + +static bool cs_etm_is_ete(struct perf_pmu *cs_etm_pmu, struct perf_cpu cpu); +static int cs_etm_get_ro(struct perf_pmu *pmu, struct perf_cpu cpu, const char *path, __u64 *val); +static bool cs_etm_pmu_path_exists(struct perf_pmu *pmu, struct perf_cpu cpu, const char *path); + +static enum cs_etm_version cs_etm_get_version(struct perf_pmu *cs_etm_pmu, + struct perf_cpu cpu) +{ + if (cs_etm_is_ete(cs_etm_pmu, cpu)) + return CS_ETE; + else if (cs_etm_pmu_path_exists(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR0])) + return CS_ETMV4; + else if (cs_etm_pmu_path_exists(cs_etm_pmu, cpu, metadata_etmv3_ro[CS_ETM_ETMCCER])) + return CS_ETMV3; + + return CS_NOT_PRESENT; +} + +static int cs_etm_validate_context_id(struct perf_pmu *cs_etm_pmu, struct evsel *evsel, + struct perf_cpu cpu) +{ + int err; + u64 ctxt, ctxt1, ctxt2; + __u64 trcidr2; + + evsel__get_config_val(evsel, "contextid", &ctxt); + evsel__get_config_val(evsel, "contextid1", &ctxt1); + evsel__get_config_val(evsel, "contextid2", &ctxt2); + + if (!ctxt && !ctxt1 && !ctxt2) + return 0; + + /* Not supported in etmv3 */ + if (cs_etm_get_version(cs_etm_pmu, cpu) == CS_ETMV3) { + pr_err("%s: contextid not supported in ETMv3, disable with %s/contextid=0/\n", + CORESIGHT_ETM_PMU_NAME, CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + + /* Get a handle on TRCIDR2 */ + err = cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR2], &trcidr2); + if (err) + return err; + + if (ctxt1) { + /* + * TRCIDR2.CIDSIZE, bit [9-5], indicates whether contextID + * tracing is supported: + * 0b00000 Context ID tracing is not supported. + * 0b00100 Maximum of 32-bit Context ID size. + * All other values are reserved. + */ + if (BMVAL(trcidr2, 5, 9) != 0x4) { + pr_err("%s: CONTEXTIDR_EL1 isn't supported, disable with %s/contextid1=0/\n", + CORESIGHT_ETM_PMU_NAME, CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + } + + if (ctxt2) { + /* + * TRCIDR2.VMIDOPT[30:29] != 0 and + * TRCIDR2.VMIDSIZE[14:10] == 0b00100 (32bit virtual contextid) + * We can't support CONTEXTIDR in VMID if the size of the + * virtual context id is < 32bit. + * Any value of VMIDSIZE >= 4 (i.e, > 32bit) is fine for us. + */ + if (!BMVAL(trcidr2, 29, 30) || BMVAL(trcidr2, 10, 14) < 4) { + pr_err("%s: CONTEXTIDR_EL2 isn't supported, disable with %s/contextid2=0/\n", + CORESIGHT_ETM_PMU_NAME, CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + } + + return 0; +} + +static int cs_etm_validate_timestamp(struct perf_pmu *cs_etm_pmu, struct evsel *evsel, + struct perf_cpu cpu) +{ + int err; + u64 val; + __u64 trcidr0; + + evsel__get_config_val(evsel, "timestamp", &val); + if (!val) + return 0; + + if (cs_etm_get_version(cs_etm_pmu, cpu) == CS_ETMV3) { + pr_err("%s: timestamp not supported in ETMv3, disable with %s/timestamp=0/\n", + CORESIGHT_ETM_PMU_NAME, CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + + /* Get a handle on TRCIRD0 */ + err = cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR0], &trcidr0); + if (err) + return err; + + /* + * TRCIDR0.TSSIZE, bit [28-24], indicates whether global timestamping + * is supported: + * 0b00000 Global timestamping is not implemented + * 0b00110 Implementation supports a maximum timestamp of 48bits. + * 0b01000 Implementation supports a maximum timestamp of 64bits. + */ + trcidr0 &= GENMASK(28, 24); + if (!trcidr0) + return -EINVAL; + + return 0; +} + +static struct perf_pmu *cs_etm_get_pmu(struct auxtrace_record *itr) +{ + struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr); + + return ptr->cs_etm_pmu; +} + +/* + * Check whether the requested timestamp and contextid options should be + * available on all requested CPUs and if not, tell the user how to override. + * The kernel will silently disable any unavailable options so a warning here + * first is better. In theory the kernel could still disable the option for + * some other reason so this is best effort only. + */ +static int cs_etm_validate_config(struct perf_pmu *cs_etm_pmu, + struct evsel *evsel) +{ + unsigned int idx; + int err = 0; + struct perf_cpu_map *event_cpus = evlist__core(evsel->evlist)->user_requested_cpus; + struct perf_cpu_map *intersect_cpus; + struct perf_cpu cpu; + + /* + * Set option of each CPU we have. In per-cpu case, do the validation + * for CPUs to work with. In per-thread case, the CPU map has the "any" + * CPU value. Since the traced program can run on any CPUs in this case, + * thus don't skip validation. + */ + if (!perf_cpu_map__has_any_cpu(event_cpus)) { + struct perf_cpu_map *online_cpus = perf_cpu_map__new_online_cpus(); + + intersect_cpus = perf_cpu_map__intersect(event_cpus, online_cpus); + perf_cpu_map__put(online_cpus); + } else { + intersect_cpus = perf_cpu_map__new_online_cpus(); + } + + perf_cpu_map__for_each_cpu_skip_any(cpu, idx, intersect_cpus) { + if (cs_etm_get_version(cs_etm_pmu, cpu) == CS_NOT_PRESENT) { + pr_err("%s: Not found on CPU %d. Check hardware and firmware support and that all Coresight drivers are loaded\n", + CORESIGHT_ETM_PMU_NAME, cpu.cpu); + return -EINVAL; + } + err = cs_etm_validate_context_id(cs_etm_pmu, evsel, cpu); + if (err) + break; + + err = cs_etm_validate_timestamp(cs_etm_pmu, evsel, cpu); + if (err) + break; + } + + perf_cpu_map__put(intersect_cpus); + return err; +} + +static int cs_etm_parse_snapshot_options(struct auxtrace_record *itr, + struct record_opts *opts, + const char *str) +{ + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + unsigned long long snapshot_size = 0; + char *endptr; + + if (str) { + snapshot_size = strtoull(str, &endptr, 0); + if (*endptr || snapshot_size > SIZE_MAX) + return -1; + } + + opts->auxtrace_snapshot_mode = true; + opts->auxtrace_snapshot_size = snapshot_size; + ptr->snapshot_size = snapshot_size; + + return 0; +} + +/* + * If the sink name format "@sink_name" is used, lookup the sink by name to convert to + * "sinkid=sink_hash" format. If the user has already manually provided a hash then + * "sinkid" isn't overwritten. If neither are provided then the driver will pick the best + * sink. + */ +static int cs_etm_set_sink_attr(struct perf_pmu *pmu, + struct evsel *evsel) +{ + char msg[BUFSIZ], path[PATH_MAX], *sink; + struct evsel_config_term *term; + u32 hash; + int ret; + + list_for_each_entry(term, &evsel->config_terms, list) { + if (term->type != EVSEL__CONFIG_TERM_DRV_CFG) + continue; + + sink = term->val.str; + snprintf(path, PATH_MAX, "sinks/%s", sink); + + ret = perf_pmu__scan_file(pmu, path, "%x", &hash); + if (ret != 1) { + if (errno == ENOENT) + pr_err("Couldn't find sink \"%s\" on event %s\n" + "Missing kernel or device support?\n\n" + "Hint: An appropriate sink will be picked automatically if one isn't specified.\n", + sink, evsel__name(evsel)); + else + pr_err("Failed to set sink \"%s\" on event %s with %d (%s)\n", + sink, evsel__name(evsel), errno, + str_error_r(errno, msg, sizeof(msg))); + return ret; + } + + evsel__set_config_if_unset(evsel, "sinkid", hash); + return 0; + } + + return 0; +} + +static struct evsel *cs_etm_get_evsel(struct evlist *evlist, + struct perf_pmu *cs_etm_pmu) +{ + struct evsel *evsel; + + evlist__for_each_entry(evlist, evsel) { + if (evsel->core.attr.type == cs_etm_pmu->type) + return evsel; + } + + return NULL; +} + +static int cs_etm_recording_options(struct auxtrace_record *itr, + struct evlist *evlist, + struct record_opts *opts) +{ + int ret; + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + struct evsel *evsel, *cs_etm_evsel = NULL; + struct perf_cpu_map *cpus = evlist__core(evlist)->user_requested_cpus; + bool privileged = perf_event_paranoid_check(-1); + int err = 0; + + evlist__for_each_entry(evlist, evsel) { + if (evsel->core.attr.type == cs_etm_pmu->type) { + if (cs_etm_evsel) { + pr_err("There may be only one %s event\n", + CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + cs_etm_evsel = evsel; + } + } + + /* no need to continue if at least one event of interest was found */ + if (!cs_etm_evsel) + return 0; + + ptr->evlist = evlist; + ptr->snapshot_mode = opts->auxtrace_snapshot_mode; + + if (!record_opts__no_switch_events(opts) && + perf_can_record_switch_events()) + opts->record_switch_events = true; + + cs_etm_evsel->needs_auxtrace_mmap = true; + opts->full_auxtrace = true; + + ret = cs_etm_set_sink_attr(cs_etm_pmu, cs_etm_evsel); + if (ret) + return ret; + + if (opts->use_clockid) { + pr_err("Cannot use clockid (-k option) with %s\n", + CORESIGHT_ETM_PMU_NAME); + return -EINVAL; + } + + /* we are in snapshot mode */ + if (opts->auxtrace_snapshot_mode) { + /* + * No size were given to '-S' or '-m,', so go with + * the default + */ + if (!opts->auxtrace_snapshot_size && + !opts->auxtrace_mmap_pages) { + if (privileged) { + opts->auxtrace_mmap_pages = MiB(4) / page_size; + } else { + opts->auxtrace_mmap_pages = + KiB(128) / page_size; + if (opts->mmap_pages == UINT_MAX) + opts->mmap_pages = KiB(256) / page_size; + } + } else if (!opts->auxtrace_mmap_pages && !privileged && + opts->mmap_pages == UINT_MAX) { + opts->mmap_pages = KiB(256) / page_size; + } + + /* + * '-m,xyz' was specified but no snapshot size, so make the + * snapshot size as big as the auxtrace mmap area. + */ + if (!opts->auxtrace_snapshot_size) { + opts->auxtrace_snapshot_size = + opts->auxtrace_mmap_pages * (size_t)page_size; + } + + /* + * -Sxyz was specified but no auxtrace mmap area, so make the + * auxtrace mmap area big enough to fit the requested snapshot + * size. + */ + if (!opts->auxtrace_mmap_pages) { + size_t sz = opts->auxtrace_snapshot_size; + + sz = round_up(sz, page_size) / page_size; + opts->auxtrace_mmap_pages = roundup_pow_of_two(sz); + } + + /* Snapshot size can't be bigger than the auxtrace area */ + if (opts->auxtrace_snapshot_size > + opts->auxtrace_mmap_pages * (size_t)page_size) { + pr_err("Snapshot size %zu must not be greater than AUX area tracing mmap size %zu\n", + opts->auxtrace_snapshot_size, + opts->auxtrace_mmap_pages * (size_t)page_size); + return -EINVAL; + } + + /* Something went wrong somewhere - this shouldn't happen */ + if (!opts->auxtrace_snapshot_size || + !opts->auxtrace_mmap_pages) { + pr_err("Failed to calculate default snapshot size and/or AUX area tracing mmap pages\n"); + return -EINVAL; + } + } + + /* Buffer sizes weren't specified with '-m,xyz' so give some defaults */ + if (!opts->auxtrace_mmap_pages) { + if (privileged) { + opts->auxtrace_mmap_pages = MiB(4) / page_size; + } else { + opts->auxtrace_mmap_pages = KiB(128) / page_size; + if (opts->mmap_pages == UINT_MAX) + opts->mmap_pages = KiB(256) / page_size; + } + } + + if (opts->auxtrace_snapshot_mode) + pr_debug2("%s snapshot size: %zu\n", CORESIGHT_ETM_PMU_NAME, + opts->auxtrace_snapshot_size); + + /* + * To obtain the auxtrace buffer file descriptor, the auxtrace + * event must come first. + */ + evlist__to_front(evlist, cs_etm_evsel); + + /* + * get the CPU on the sample - need it to associate trace ID in the + * AUX_OUTPUT_HW_ID event, and the AUX event for per-cpu mmaps. + */ + evsel__set_sample_bit(cs_etm_evsel, CPU); + + /* + * Also the case of per-cpu mmaps, need the contextID in order to be notified + * when a context switch happened. + */ + if (!perf_cpu_map__is_any_cpu_or_is_empty(cpus)) { + evsel__set_config_if_unset(cs_etm_evsel, "timestamp", 1); + evsel__set_config_if_unset(cs_etm_evsel, "contextid", 1); + } + + /* + * When the option '--timestamp' or '-T' is enabled, the PERF_SAMPLE_TIME + * bit is set for all events. In this case, always enable Arm CoreSight + * timestamp tracing. + */ + if (opts->sample_time_set) + evsel__set_config_if_unset(cs_etm_evsel, "timestamp", 1); + + /* Add dummy event to keep tracking */ + err = parse_event(evlist, "dummy:u"); + if (err) + goto out; + evsel = evlist__last(evlist); + evlist__set_tracking_event(evlist, evsel); + evsel->core.attr.freq = 0; + evsel->core.attr.sample_period = 1; + + /* In per-cpu case, always need the time of mmap events etc */ + if (!perf_cpu_map__is_any_cpu_or_is_empty(cpus)) + evsel__set_sample_bit(evsel, TIME); + + err = cs_etm_validate_config(cs_etm_pmu, cs_etm_evsel); +out: + return err; +} + +static u64 cs_etm_synth_etmcr(struct auxtrace_record *itr) +{ + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + struct evsel *evsel = cs_etm_get_evsel(ptr->evlist, cs_etm_pmu); + u64 etmcr = 0; + u64 val; + + if (!evsel) + return 0; + + /* + * Synthesize what the kernel programmed into ETMCR based on + * what options the event was opened with. This doesn't have to be + * complete or 100% accurate, not all bits used by OpenCSD anyway. + */ + if (!evsel__get_config_val(evsel, "cycacc", &val) && val) + etmcr |= ETMCR_CYC_ACC; + if (!evsel__get_config_val(evsel, "timestamp", &val) && val) + etmcr |= ETMCR_TIMESTAMP_EN; + if (!evsel__get_config_val(evsel, "retstack", &val) && val) + etmcr |= ETMCR_RETURN_STACK; + + return etmcr; +} + +static u64 cs_etmv4_synth_trcconfigr(struct auxtrace_record *itr) +{ + u64 trcconfigr = 0; + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + struct evsel *evsel = cs_etm_get_evsel(ptr->evlist, cs_etm_pmu); + u64 val; + + if (!evsel) + return 0; + + /* + * Synthesize what the kernel programmed into TRCCONFIGR based on + * what options the event was opened with. This doesn't have to be + * complete or 100% accurate, not all bits used by OpenCSD anyway. + */ + if (!evsel__get_config_val(evsel, "cycacc", &val) && val) + trcconfigr |= TRCCONFIGR_CCI; + if (!evsel__get_config_val(evsel, "contextid1", &val) && val) + trcconfigr |= TRCCONFIGR_CID; + if (!evsel__get_config_val(evsel, "timestamp", &val) && val) + trcconfigr |= TRCCONFIGR_TS; + if (!evsel__get_config_val(evsel, "retstack", &val) && val) + trcconfigr |= TRCCONFIGR_RS; + if (!evsel__get_config_val(evsel, "contextid2", &val) && val) + trcconfigr |= TRCCONFIGR_VMID | TRCCONFIGR_VMIDOPT; + if (!evsel__get_config_val(evsel, "branch_broadcast", &val) && val) + trcconfigr |= TRCCONFIGR_BB; + + return trcconfigr; +} + +static size_t +cs_etm_info_priv_size(struct auxtrace_record *itr, + struct evlist *evlist) +{ + unsigned int idx; + int etmv3 = 0, etmv4 = 0, ete = 0; + struct perf_cpu_map *event_cpus = evlist__core(evlist)->user_requested_cpus; + struct perf_cpu_map *intersect_cpus; + struct perf_cpu cpu; + struct perf_pmu *cs_etm_pmu = cs_etm_get_pmu(itr); + + if (!perf_cpu_map__has_any_cpu(event_cpus)) { + /* cpu map is not "any" CPU , we have specific CPUs to work with */ + struct perf_cpu_map *online_cpus = perf_cpu_map__new_online_cpus(); + + intersect_cpus = perf_cpu_map__intersect(event_cpus, online_cpus); + perf_cpu_map__put(online_cpus); + } else { + /* Event can be "any" CPU so count all online CPUs. */ + intersect_cpus = perf_cpu_map__new_online_cpus(); + } + /* Count number of each type of ETM. Don't count if that CPU has CS_NOT_PRESENT. */ + perf_cpu_map__for_each_cpu_skip_any(cpu, idx, intersect_cpus) { + enum cs_etm_version v = cs_etm_get_version(cs_etm_pmu, cpu); + + ete += v == CS_ETE; + etmv4 += v == CS_ETMV4; + etmv3 += v == CS_ETMV3; + } + perf_cpu_map__put(intersect_cpus); + + return (CS_ETM_HEADER_SIZE + + (ete * CS_ETE_PRIV_SIZE) + + (etmv4 * CS_ETMV4_PRIV_SIZE) + + (etmv3 * CS_ETMV3_PRIV_SIZE)); +} + +static int cs_etm_get_ro(struct perf_pmu *pmu, struct perf_cpu cpu, const char *path, __u64 *val) +{ + char pmu_path[PATH_MAX]; + int scan; + + /* Get RO metadata from sysfs */ + snprintf(pmu_path, PATH_MAX, "cpu%d/%s", cpu.cpu, path); + + scan = perf_pmu__scan_file(pmu, pmu_path, "%llx", val); + if (scan != 1) { + pr_err("%s: error reading: %s\n", __func__, pmu_path); + return -EINVAL; + } + + return 0; +} + +static int cs_etm_get_ro_signed(struct perf_pmu *pmu, struct perf_cpu cpu, const char *path, + __u64 *out_val) +{ + char pmu_path[PATH_MAX]; + int scan; + int val = 0; + + /* Get RO metadata from sysfs */ + snprintf(pmu_path, PATH_MAX, "cpu%d/%s", cpu.cpu, path); + + scan = perf_pmu__scan_file(pmu, pmu_path, "%d", &val); + if (scan != 1) { + pr_err("%s: error reading: %s\n", __func__, pmu_path); + return -EINVAL; + } + + *out_val = (__u64) val; + return 0; +} + +static bool cs_etm_pmu_path_exists(struct perf_pmu *pmu, struct perf_cpu cpu, const char *path) +{ + char pmu_path[PATH_MAX]; + + /* Get RO metadata from sysfs */ + snprintf(pmu_path, PATH_MAX, "cpu%d/%s", cpu.cpu, path); + + return perf_pmu__file_exists(pmu, pmu_path); +} + +#define TRCDEVARCH_ARCHPART_SHIFT 0 +#define TRCDEVARCH_ARCHPART_MASK GENMASK(11, 0) +#define TRCDEVARCH_ARCHPART(x) (((x) & TRCDEVARCH_ARCHPART_MASK) >> TRCDEVARCH_ARCHPART_SHIFT) + +#define TRCDEVARCH_ARCHVER_SHIFT 12 +#define TRCDEVARCH_ARCHVER_MASK GENMASK(15, 12) +#define TRCDEVARCH_ARCHVER(x) (((x) & TRCDEVARCH_ARCHVER_MASK) >> TRCDEVARCH_ARCHVER_SHIFT) + +static bool cs_etm_is_ete(struct perf_pmu *cs_etm_pmu, struct perf_cpu cpu) +{ + __u64 trcdevarch; + + if (!cs_etm_pmu_path_exists(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCDEVARCH])) + return false; + + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCDEVARCH], &trcdevarch); + /* + * ETE if ARCHVER is 5 (ARCHVER is 4 for ETM) and ARCHPART is 0xA13. + * See ETM_DEVARCH_ETE_ARCH in coresight-etm4x.h + */ + return TRCDEVARCH_ARCHVER(trcdevarch) == 5 && TRCDEVARCH_ARCHPART(trcdevarch) == 0xA13; +} + +static __u64 cs_etm_get_legacy_trace_id(struct perf_cpu cpu) +{ + /* Wrap at 48 so that invalid trace IDs aren't saved into files. */ + return CORESIGHT_LEGACY_CPU_TRACE_ID(cpu.cpu % 48); +} + +static void cs_etm_save_etmv4_header(__u64 data[], struct auxtrace_record *itr, struct perf_cpu cpu) +{ + struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + + /* Get trace configuration register */ + data[CS_ETMV4_TRCCONFIGR] = cs_etmv4_synth_trcconfigr(itr); + /* traceID set to legacy version, in case new perf running on older system */ + data[CS_ETMV4_TRCTRACEIDR] = cs_etm_get_legacy_trace_id(cpu); + + /* Get read-only information from sysFS */ + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR0], + &data[CS_ETMV4_TRCIDR0]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR1], + &data[CS_ETMV4_TRCIDR1]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR2], + &data[CS_ETMV4_TRCIDR2]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR8], + &data[CS_ETMV4_TRCIDR8]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TRCAUTHSTATUS], + &data[CS_ETMV4_TRCAUTHSTATUS]); + + /* Kernels older than 5.19 may not expose ts_source */ + if (!cs_etm_pmu_path_exists(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TS_SOURCE]) || + cs_etm_get_ro_signed(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETMV4_TS_SOURCE], + &data[CS_ETMV4_TS_SOURCE])) { + pr_debug3("[%03d] pmu file 'ts_source' not found. Fallback to safe value (-1)\n", + cpu.cpu); + data[CS_ETMV4_TS_SOURCE] = (__u64) -1; + } +} + +static void cs_etm_save_ete_header(__u64 data[], struct auxtrace_record *itr, struct perf_cpu cpu) +{ + struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + + /* Get trace configuration register */ + data[CS_ETE_TRCCONFIGR] = cs_etmv4_synth_trcconfigr(itr); + /* traceID set to legacy version, in case new perf running on older system */ + data[CS_ETE_TRCTRACEIDR] = cs_etm_get_legacy_trace_id(cpu); + + /* Get read-only information from sysFS */ + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCIDR0], &data[CS_ETE_TRCIDR0]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCIDR1], &data[CS_ETE_TRCIDR1]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCIDR2], &data[CS_ETE_TRCIDR2]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCIDR8], &data[CS_ETE_TRCIDR8]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCAUTHSTATUS], + &data[CS_ETE_TRCAUTHSTATUS]); + /* ETE uses the same registers as ETMv4 plus TRCDEVARCH */ + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCDEVARCH], + &data[CS_ETE_TRCDEVARCH]); + + /* Kernels older than 5.19 may not expose ts_source */ + if (!cs_etm_pmu_path_exists(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TS_SOURCE]) || + cs_etm_get_ro_signed(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TS_SOURCE], + &data[CS_ETE_TS_SOURCE])) { + pr_debug3("[%03d] pmu file 'ts_source' not found. Fallback to safe value (-1)\n", + cpu.cpu); + data[CS_ETE_TS_SOURCE] = (__u64) -1; + } +} + +static void cs_etm_get_metadata(struct perf_cpu cpu, u32 *offset, + struct auxtrace_record *itr, + struct perf_record_auxtrace_info *info) +{ + u32 increment, nr_trc_params; + u64 magic; + struct perf_pmu *cs_etm_pmu = cs_etm_get_pmu(itr); + + /* first see what kind of tracer this cpu is affined to */ + switch (cs_etm_get_version(cs_etm_pmu, cpu)) { + case CS_ETE: + magic = __perf_cs_ete_magic; + cs_etm_save_ete_header(&info->priv[*offset], itr, cpu); + + /* How much space was used */ + increment = CS_ETE_PRIV_MAX; + nr_trc_params = CS_ETE_PRIV_MAX - CS_ETM_COMMON_BLK_MAX_V1; + break; + + case CS_ETMV4: + magic = __perf_cs_etmv4_magic; + cs_etm_save_etmv4_header(&info->priv[*offset], itr, cpu); + + /* How much space was used */ + increment = CS_ETMV4_PRIV_MAX; + nr_trc_params = CS_ETMV4_PRIV_MAX - CS_ETMV4_TRCCONFIGR; + break; + + case CS_ETMV3: + magic = __perf_cs_etmv3_magic; + /* Get configuration register */ + info->priv[*offset + CS_ETM_ETMCR] = cs_etm_synth_etmcr(itr); + /* traceID set to legacy value in case new perf running on old system */ + info->priv[*offset + CS_ETM_ETMTRACEIDR] = cs_etm_get_legacy_trace_id(cpu); + /* Get read-only information from sysFS */ + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv3_ro[CS_ETM_ETMCCER], + &info->priv[*offset + CS_ETM_ETMCCER]); + cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv3_ro[CS_ETM_ETMIDR], + &info->priv[*offset + CS_ETM_ETMIDR]); + + /* How much space was used */ + increment = CS_ETM_PRIV_MAX; + nr_trc_params = CS_ETM_PRIV_MAX - CS_ETM_ETMCR; + break; + + default: + case CS_NOT_PRESENT: + /* Unreachable, CPUs already validated in cs_etm_validate_config() */ + assert(true); + return; + } + + /* Build generic header portion */ + info->priv[*offset + CS_ETM_MAGIC] = magic; + info->priv[*offset + CS_ETM_CPU] = cpu.cpu; + info->priv[*offset + CS_ETM_NR_TRC_PARAMS] = nr_trc_params; + /* Where the next CPU entry should start from */ + *offset += increment; +} + +static int cs_etm_info_fill(struct auxtrace_record *itr, + struct perf_session *session, + struct perf_record_auxtrace_info *info, + size_t priv_size) +{ + unsigned int i; + u32 offset; + u64 nr_cpu, type; + struct perf_cpu_map *cpu_map; + struct perf_cpu_map *event_cpus = evlist__core(session->evlist)->user_requested_cpus; + struct perf_cpu_map *online_cpus = perf_cpu_map__new_online_cpus(); + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; + struct perf_cpu cpu; + + if (priv_size != cs_etm_info_priv_size(itr, session->evlist)) + return -EINVAL; + + if (!evlist__core(session->evlist)->nr_mmaps) + return -EINVAL; + + /* If the cpu_map has the "any" CPU all online CPUs are involved */ + if (perf_cpu_map__has_any_cpu(event_cpus)) { + cpu_map = online_cpus; + } else { + /* Make sure all specified CPUs are online */ + perf_cpu_map__for_each_cpu(cpu, i, event_cpus) { + if (!perf_cpu_map__has(online_cpus, cpu)) + return -EINVAL; + } + + cpu_map = event_cpus; + } + + nr_cpu = perf_cpu_map__nr(cpu_map); + /* Get PMU type as dynamically assigned by the core */ + type = cs_etm_pmu->type; + + /* First fill out the session header */ + info->type = PERF_AUXTRACE_CS_ETM; + info->priv[CS_HEADER_VERSION] = CS_HEADER_CURRENT_VERSION; + info->priv[CS_PMU_TYPE_CPUS] = type << 32; + info->priv[CS_PMU_TYPE_CPUS] |= nr_cpu; + info->priv[CS_ETM_SNAPSHOT] = ptr->snapshot_mode; + + offset = CS_ETM_SNAPSHOT + 1; + + perf_cpu_map__for_each_cpu(cpu, i, cpu_map) { + assert(offset < priv_size); + cs_etm_get_metadata(cpu, &offset, itr, info); + } + + perf_cpu_map__put(online_cpus); + + return 0; +} + +static int cs_etm_snapshot_start(struct auxtrace_record *itr) +{ + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct evsel *evsel = cs_etm_get_evsel(ptr->evlist, ptr->cs_etm_pmu); + + if (evsel) + return evsel__disable(evsel); + + return -EINVAL; +} + +static int cs_etm_snapshot_finish(struct auxtrace_record *itr) +{ + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + struct evsel *evsel; + + evlist__for_each_entry(ptr->evlist, evsel) { + if (evsel->core.attr.type == ptr->cs_etm_pmu->type) + return evsel__enable(evsel); + } + return -EINVAL; +} + +static u64 cs_etm_reference(struct auxtrace_record *itr __maybe_unused) +{ + return (((u64) rand() << 0) & 0x00000000FFFFFFFFull) | + (((u64) rand() << 32) & 0xFFFFFFFF00000000ull); +} + +static void cs_etm_recording_free(struct auxtrace_record *itr) +{ + struct cs_etm_recording *ptr = + container_of(itr, struct cs_etm_recording, itr); + + free(ptr); +} + +struct auxtrace_record *cs_etm_record_init(int *err) +{ + struct perf_pmu *cs_etm_pmu; + struct cs_etm_recording *ptr; + + cs_etm_pmu = perf_pmus__find(CORESIGHT_ETM_PMU_NAME); + + if (!cs_etm_pmu) { + *err = -EINVAL; + goto out; + } + + ptr = zalloc(sizeof(struct cs_etm_recording)); + if (!ptr) { + *err = -ENOMEM; + goto out; + } + + ptr->cs_etm_pmu = cs_etm_pmu; + ptr->itr.parse_snapshot_options = cs_etm_parse_snapshot_options; + ptr->itr.recording_options = cs_etm_recording_options; + ptr->itr.info_priv_size = cs_etm_info_priv_size; + ptr->itr.info_fill = cs_etm_info_fill; + ptr->itr.snapshot_start = cs_etm_snapshot_start; + ptr->itr.snapshot_finish = cs_etm_snapshot_finish; + ptr->itr.reference = cs_etm_reference; + ptr->itr.free = cs_etm_recording_free; + ptr->itr.read_finish = auxtrace_record__read_finish; + + *err = 0; + return &ptr->itr; +out: + return NULL; +} + +/* + * Set a default config to enable the user changed config tracking mechanism + * (CFG_CHG and evsel__set_config_if_unset()). If no default is set then user + * changes aren't tracked. + */ +void +cs_etm_get_default_config(const struct perf_pmu *pmu __maybe_unused, + struct perf_event_attr *attr) +{ + attr->sample_period = 1; +} diff --git a/tools/perf/arch/arm/util/cs-etm.h b/tools/perf/arch/arm/util/cs-etm.h new file mode 100644 index 000000000..a3354bda4 --- /dev/null +++ b/tools/perf/arch/arm/util/cs-etm.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright(C) 2015 Linaro Limited. All rights reserved. + * Author: Mathieu Poirier <mathieu.poirier@linaro.org> + */ + +#ifndef INCLUDE__PERF_CS_ETM_H__ +#define INCLUDE__PERF_CS_ETM_H__ + +struct auxtrace_record *cs_etm_record_init(int *err); + +#endif diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c new file mode 100644 index 000000000..9be8da520 --- /dev/null +++ b/tools/perf/arch/arm/util/pmu.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright(C) 2015 Linaro Limited. All rights reserved. + * Author: Mathieu Poirier <mathieu.poirier@linaro.org> + */ + +#include <string.h> +#include <linux/coresight-pmu.h> +#include <linux/perf_event.h> +#include <linux/string.h> + +#include "arm-spe.h" +#include "hisi-ptt.h" +#include "../../../util/cpumap.h" +#include "../../../util/pmu.h" +#include "../../../util/cs-etm.h" +#include "../../arm64/util/mem-events.h" + +void perf_pmu__arch_init(struct perf_pmu *pmu) +{ + struct perf_cpu_map *intersect, *online = cpu_map__online(); + + if (!strcmp(pmu->name, CORESIGHT_ETM_PMU_NAME)) { + /* add ETM default config here */ + pmu->auxtrace = true; + pmu->selectable = true; + pmu->perf_event_attr_init_default = cs_etm_get_default_config; +#if defined(__aarch64__) + } else if (strstarts(pmu->name, ARM_SPE_PMU_NAME)) { + pmu->auxtrace = true; + pmu->selectable = true; + pmu->is_uncore = false; + pmu->perf_event_attr_init_default = arm_spe_pmu_default_config; + if (strstarts(pmu->name, "arm_spe_")) + pmu->mem_events = perf_mem_events_arm; + } else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) { + pmu->auxtrace = true; + pmu->selectable = true; +#endif + } + /* Workaround some ARM PMU's failing to correctly set CPU maps for online processors. */ + intersect = perf_cpu_map__intersect(online, pmu->cpus); + perf_cpu_map__put(online); + perf_cpu_map__put(pmu->cpus); + pmu->cpus = intersect; +} |