On Fri, Sep 04, 2020 at 11:19:53AM +0800, Boqun Feng wrote:
> On Mon, Aug 31, 2020 at 11:14:16AM -0700, paul...@kernel.org wrote:
> > From: "Paul E. McKenney"
> >
> > This commit causes csd_lock_wait() to emit diagnostics when a CPU
> > fails to respond quickly enough to one of the
On Mon, Aug 31, 2020 at 11:14:16AM -0700, paul...@kernel.org wrote:
[...]
> +static __always_inline bool csd_lock_wait_toolong(call_single_data_t *csd,
> u64 ts0, u64 *ts1, int *bug_id)
> +{
> + int cpu = -1;
> + int cpux;
> + bool firsttime;
> + u64 ts2, ts_delta;
> +
On Mon, Aug 31, 2020 at 11:14:16AM -0700, paul...@kernel.org wrote:
> From: "Paul E. McKenney"
>
> This commit causes csd_lock_wait() to emit diagnostics when a CPU
> fails to respond quickly enough to one of the smp_call_function()
> family of function calls. These diagnostics are enabled by a
From: "Paul E. McKenney"
This commit causes csd_lock_wait() to emit diagnostics when a CPU
fails to respond quickly enough to one of the smp_call_function()
family of function calls. These diagnostics are enabled by a new
CSD_LOCK_WAIT_DEBUG Kconfig option that depends on DEBUG_KERNEL.
This
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