The patch titled
kernel-core-add-smp_call_function_any-update
has been added to the -mm tree. Its filename is
kernel-core-add-smp_call_function_any-update.patch
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------------------------------------------------------
Subject: kernel-core-add-smp_call_function_any-update
From: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Updated header comment and implementation comment.
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Zhao Yakui <yakui.zhao@xxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: "Zhang, Yanmin" <yanmin_zhang@xxxxxxxxxxxxxxx>
Cc: Jaswinder Singh Rajput <jaswinder@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/smp.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN kernel/smp.c~kernel-core-add-smp_call_function_any-update kernel/smp.c
--- a/kernel/smp.c~kernel-core-add-smp_call_function_any-update
+++ a/kernel/smp.c
@@ -322,9 +322,9 @@ EXPORT_SYMBOL(smp_call_function_single);
* @info: An arbitrary pointer to pass to the function.
* @wait: If true, wait until function has completed.
*
- * 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 (if no cpus were online).
+ * Note that @wait will be implicitly turned on in case of allocation failures,
+ * since we fall back to on-stack allocation.
*/
int smp_call_function_any(const struct cpumask *mask,
void (*func)(void *info), void *info, int wait)
@@ -346,7 +346,7 @@ int smp_call_function_any(const struct c
goto call;
}
- /* Any online will do. */
+ /* Any online will do: smp_call_function_single handles nr_cpu_ids. */
cpu = cpumask_any_and(mask, cpu_online_mask);
call:
ret = smp_call_function_single(cpu, func, info, wait);
_
Patches currently in -mm which might be from rusty@xxxxxxxxxxxxxxx are
eventfd-revised-interface-and-cleanups-4th-rev.patch
linux-next.patch
kernel-core-add-smp_call_function_any.patch
kernel-core-add-smp_call_function_any-update.patch
arch-x86-kernel-cpu-cpufreq-acpi-cpufreqc-avoid-cross-cpu-interrupts-by-using-smp_call_function_any.patch
reiser4.patch
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