Commit-ID: 72f279b256d520e321a850880d094bc0bcbf45d6 Gitweb: http://git.kernel.org/tip/72f279b256d520e321a850880d094bc0bcbf45d6 Author: Sheng Yang <sheng@xxxxxxxxxxxxxxx> AuthorDate: Thu, 22 Oct 2009 19:19:34 +0800 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Fri, 23 Oct 2009 13:51:45 +0200 generic-ipi: Fix misleading smp_call_function*() description After commit:8969a5ede0f9e17da4b943712429aef2c9bcd82b "generic-ipi: remove kmalloc()", wait = 0 can be guaranteed. Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Jens Axboe <jens.axboe@xxxxxxxxxx> Cc: Nick Piggin <npiggin@xxxxxxx> LKML-Reference: <1256210374-25354-1-git-send-email-sheng@xxxxxxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/smp.c | 11 +++-------- 1 files changed, 3 insertions(+), 8 deletions(-) diff --git a/kernel/smp.c b/kernel/smp.c index c9d1c78..8bd618f 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -265,9 +265,7 @@ static DEFINE_PER_CPU(struct call_single_data, csd_data); * @info: An arbitrary pointer to pass to the function. * @wait: If true, wait until function has completed on other CPUs. * - * Returns 0 on success, else a negative status code. Note that @wait - * will be implicitly turned on in case of allocation failures, since - * we fall back to on-stack allocation. + * Returns 0 on success, else a negative status code. */ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int wait) @@ -355,9 +353,7 @@ void __smp_call_function_single(int cpu, struct call_single_data *data, * @wait: If true, wait (atomically) until function has completed * on other CPUs. * - * If @wait is true, then returns once @func has returned. Note that @wait - * will be implicitly turned on in case of allocation failures, since - * we fall back to on-stack allocation. + * If @wait is true, then returns once @func has returned. * * You must not call this function with disabled interrupts or from a * hardware interrupt handler or from a bottom half handler. Preemption @@ -443,8 +439,7 @@ EXPORT_SYMBOL(smp_call_function_many); * Returns 0. * * If @wait is true, then returns once @func has returned; otherwise - * it returns just before the target cpu calls @func. In case of allocation - * failure, @wait will be implicitly turned on. + * it returns just before the target cpu calls @func. * * You must not call this function with disabled interrupts or from a * hardware interrupt handler or from a bottom half handler. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|