Messages in this thread Patch in this message | | | From | Jean Pihet <> | Subject | [PATCH 06/16] mce, x86: Enable persistent events | Date | Mon, 7 Apr 2014 17:04:28 +0200 |
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From: Borislav Petkov <bp@suse.de>
... for MCEs collection.
Signed-off-by: Borislav Petkov <bp@suse.de> [ rric: Fix build error for no-tracepoints configs ] [ rric: Return proper error code. ] [ rric: No error message if perf is disabled. ] Signed-off-by: Robert Richter <rric@kernel.org> --- arch/x86/kernel/cpu/mcheck/mce.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 4d5419b..92b0d45 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -2018,6 +2018,25 @@ int __init mcheck_init(void) return 0; } +#ifdef CONFIG_EVENT_TRACING + +int __init mcheck_init_tp(void) +{ + int ret = perf_add_persistent_tp(&event_mce_record); + + if (ret && ret != -ENOENT) + pr_err("Error adding MCE persistent event: %d\n", ret); + + return ret; +} +/* + * We can't run earlier because persistent events uses anon_inode_getfile and + * its anon_inode_mnt gets initialized as a fs_initcall. + */ +fs_initcall_sync(mcheck_init_tp); + +#endif /* CONFIG_EVENT_TRACING */ + /* * mce_syscore: PM support */ -- 1.7.11.7
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