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| author | Alexei Starovoitov <ast@kernel.org> | 2024-11-13 12:51:15 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-11-13 12:52:51 -0800 |
| commit | 871438170326dc28125cb823d19c1d5c5304474d (patch) | |
| tree | 789e34628d77dc234f1b6e893c237969c6e14287 /kernel/trace | |
| parent | b41ec3e6053a1e408da8ce02be6cc8885aa41848 (diff) | |
| parent | 9f8e716d46c68112484a23d1742d9ec725e082fc (diff) | |
| download | linux-871438170326dc28125cb823d19c1d5c5304474d.tar.gz linux-871438170326dc28125cb823d19c1d5c5304474d.tar.bz2 linux-871438170326dc28125cb823d19c1d5c5304474d.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Cross-merge bpf fixes after downstream PR.
In particular to bring the fix in
commit aa30eb3260b2 ("bpf: Force checkpoint when jmp history is too long").
The follow up verifier work depends on it.
And the fix in
commit 6801cf7890f2 ("selftests/bpf: Use -4095 as the bad address for bits iterator").
It's fixing instability of BPF CI on s390 arch.
No conflicts.
Adjacent changes in:
Auto-merging arch/Kconfig
Auto-merging kernel/bpf/helpers.c
Auto-merging kernel/bpf/memalloc.c
Auto-merging kernel/bpf/verifier.c
Auto-merging mm/slab_common.c
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/fgraph.c | 12 | ||||
| -rw-r--r-- | kernel/trace/trace.c | 4 |
2 files changed, 8 insertions, 8 deletions
diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c index 41e7a15dcb50..69e226a48daa 100644 --- a/kernel/trace/fgraph.c +++ b/kernel/trace/fgraph.c @@ -1252,10 +1252,10 @@ int register_ftrace_graph(struct fgraph_ops *gops) int ret = 0; int i = -1; - mutex_lock(&ftrace_lock); + guard(mutex)(&ftrace_lock); if (!fgraph_initialized) { - ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "fgraph_idle_init", + ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "fgraph:online", fgraph_cpu_init, NULL); if (ret < 0) { pr_warn("fgraph: Error to init cpu hotplug support\n"); @@ -1273,10 +1273,8 @@ int register_ftrace_graph(struct fgraph_ops *gops) } i = fgraph_lru_alloc_index(); - if (i < 0 || WARN_ON_ONCE(fgraph_array[i] != &fgraph_stub)) { - ret = -ENOSPC; - goto out; - } + if (i < 0 || WARN_ON_ONCE(fgraph_array[i] != &fgraph_stub)) + return -ENOSPC; gops->idx = i; ftrace_graph_active++; @@ -1313,8 +1311,6 @@ error: gops->saved_func = NULL; fgraph_lru_release_index(i); } -out: - mutex_unlock(&ftrace_lock); return ret; } diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index a8f52b6527ca..2b64b3ec67d9 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5501,6 +5501,10 @@ static const struct file_operations tracing_iter_fops = { static const char readme_msg[] = "tracing mini-HOWTO:\n\n" + "By default tracefs removes all OTH file permission bits.\n" + "When mounting tracefs an optional group id can be specified\n" + "which adds the group to every directory and file in tracefs:\n\n" + "\t e.g. mount -t tracefs [-o [gid=<gid>]] nodev /sys/kernel/tracing\n\n" "# echo 0 > tracing_on : quick way to disable tracing\n" "# echo 1 > tracing_on : quick way to re-enable tracing\n\n" " Important files:\n" |