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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-12 11:00:22 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-12 11:00:22 -0700 |
commit | 676cb4957396411fdb7aba906d5f950fc3de7cc9 (patch) | |
tree | bbc747384f842ace55d4a4bf6a98f27a8304bb20 /kernel/profile.c | |
parent | Merge tag 'loongarch-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson (diff) | |
parent | include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype (diff) | |
download | linux-dev-676cb4957396411fdb7aba906d5f950fc3de7cc9.tar.xz linux-dev-676cb4957396411fdb7aba906d5f950fc3de7cc9.zip |
Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- hfs and hfsplus kmap API modernization (Fabio Francesco)
- make crash-kexec work properly when invoked from an NMI-time panic
(Valentin Schneider)
- ntfs bugfixes (Hawkins Jiawei)
- improve IPC msg scalability by replacing atomic_t's with percpu
counters (Jiebin Sun)
- nilfs2 cleanups (Minghao Chi)
- lots of other single patches all over the tree!
* tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype
proc: test how it holds up with mapping'less process
mailmap: update Frank Rowand email address
ia64: mca: use strscpy() is more robust and safer
init/Kconfig: fix unmet direct dependencies
ia64: update config files
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
fork: remove duplicate included header files
init/main.c: remove unnecessary (void*) conversions
proc: mark more files as permanent
nilfs2: remove the unneeded result variable
nilfs2: delete unnecessary checks before brelse()
checkpatch: warn for non-standard fixes tag style
usr/gen_init_cpio.c: remove unnecessary -1 values from int file
ipc/msg: mitigate the lock contention with percpu counter
percpu: add percpu_counter_add_local and percpu_counter_sub_local
fs/ocfs2: fix repeated words in comments
relay: use kvcalloc to alloc page array in relay_alloc_page_array
proc: make config PROC_CHILDREN depend on PROC_FS
fs: uninline inode_maybe_inc_iversion()
...
Diffstat (limited to 'kernel/profile.c')
-rw-r--r-- | kernel/profile.c | 32 |
1 files changed, 14 insertions, 18 deletions
diff --git a/kernel/profile.c b/kernel/profile.c index 7ea01ba30e75..8a77769bc4b4 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -59,43 +59,39 @@ int profile_setup(char *str) static const char schedstr[] = "schedule"; static const char sleepstr[] = "sleep"; static const char kvmstr[] = "kvm"; + const char *select = NULL; int par; if (!strncmp(str, sleepstr, strlen(sleepstr))) { #ifdef CONFIG_SCHEDSTATS force_schedstat_enabled(); prof_on = SLEEP_PROFILING; - if (str[strlen(sleepstr)] == ',') - str += strlen(sleepstr) + 1; - if (get_option(&str, &par)) - prof_shift = clamp(par, 0, BITS_PER_LONG - 1); - pr_info("kernel sleep profiling enabled (shift: %u)\n", - prof_shift); + select = sleepstr; #else pr_warn("kernel sleep profiling requires CONFIG_SCHEDSTATS\n"); #endif /* CONFIG_SCHEDSTATS */ } else if (!strncmp(str, schedstr, strlen(schedstr))) { prof_on = SCHED_PROFILING; - if (str[strlen(schedstr)] == ',') - str += strlen(schedstr) + 1; - if (get_option(&str, &par)) - prof_shift = clamp(par, 0, BITS_PER_LONG - 1); - pr_info("kernel schedule profiling enabled (shift: %u)\n", - prof_shift); + select = schedstr; } else if (!strncmp(str, kvmstr, strlen(kvmstr))) { prof_on = KVM_PROFILING; - if (str[strlen(kvmstr)] == ',') - str += strlen(kvmstr) + 1; - if (get_option(&str, &par)) - prof_shift = clamp(par, 0, BITS_PER_LONG - 1); - pr_info("kernel KVM profiling enabled (shift: %u)\n", - prof_shift); + select = kvmstr; } else if (get_option(&str, &par)) { prof_shift = clamp(par, 0, BITS_PER_LONG - 1); prof_on = CPU_PROFILING; pr_info("kernel profiling enabled (shift: %u)\n", prof_shift); } + + if (select) { + if (str[strlen(select)] == ',') + str += strlen(select) + 1; + if (get_option(&str, &par)) + prof_shift = clamp(par, 0, BITS_PER_LONG - 1); + pr_info("kernel %s profiling enabled (shift: %u)\n", + select, prof_shift); + } + return 1; } __setup("profile=", profile_setup); |