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kprobes: Use module_name() macro

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It is advised to use module_name() macro instead of dereferencing mod->name
directly. This makes sense for consistencys sake and also it prevents a
hard dependency to CONFIG_MODULES.

Link: https://lkml.kernel.org/r/20200818050857.117998-1-jarkko.sakkinen@linux.intel.com

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mm@kvack.org
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Jarkko Sakkinen 2020-08-18 08:08:57 +03:00 committed by Steven Rostedt (VMware)
parent b427e765bd
commit f3d3642661
1 changed files with 4 additions and 3 deletions
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7
kernel/trace/trace_kprobe.c
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@ -106,9 +106,10 @@ static nokprobe_inline bool trace_kprobe_has_gone(struct trace_kprobe *tk)
static nokprobe_inline bool trace_kprobe_within_module(struct trace_kprobe *tk, static nokprobe_inline bool trace_kprobe_within_module(struct trace_kprobe *tk,
struct module *mod) struct module *mod)
{ {
int len = strlen(mod->name); int len = strlen(module_name(mod));
const char *name = trace_kprobe_symbol(tk); const char *name = trace_kprobe_symbol(tk);
return strncmp(mod->name, name, len) == 0 && name[len] == ':';
return strncmp(module_name(mod), name, len) == 0 && name[len] == ':';
} }
static nokprobe_inline bool trace_kprobe_module_exist(struct trace_kprobe *tk) static nokprobe_inline bool trace_kprobe_module_exist(struct trace_kprobe *tk)
@ -688,7 +689,7 @@ static int trace_kprobe_module_callback(struct notifier_block *nb,
if (ret) if (ret)
pr_warn("Failed to re-register probe %s on %s: %d\n", pr_warn("Failed to re-register probe %s on %s: %d\n",
trace_probe_name(&tk->tp), trace_probe_name(&tk->tp),
mod->name, ret); module_name(mod), ret);
} }
} }
mutex_unlock(&event_mutex); mutex_unlock(&event_mutex);