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| author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
| commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
| tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch | |
| parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
| download | mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.zip mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 | |
kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch')
| -rw-r--r-- | target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch b/target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch new file mode 100644 index 0000000..8d5030c --- /dev/null +++ b/target/linux/generic/pending-4.4/091-MIPS-c-r4k-Exclude-sibling-CPUs-in-SMP-calls.patch @@ -0,0 +1,37 @@ +From: James Hogan <james.hogan@imgtec.com> +Date: Thu, 3 Mar 2016 21:30:42 +0000 +Subject: [PATCH] MIPS: c-r4k: Exclude sibling CPUs in SMP calls + +When performing SMP calls to foreign cores, exclude sibling CPUs from +the provided map, as we already handle the local core on the current +CPU. This prevents an IPI call from for example core 0, VPE 1 to VPE 0 +on the same core. + +Signed-off-by: James Hogan <james.hogan@imgtec.com> +Cc: Ralf Baechle <ralf@linux-mips.org> +Cc: Paul Burton <paul.burton@imgtec.com> +Cc: linux-mips@linux-mips.org +--- + +--- a/arch/mips/mm/c-r4k.c ++++ b/arch/mips/mm/c-r4k.c +@@ -96,8 +96,17 @@ static inline void r4k_on_each_cpu(unsig + void (*func) (void *info), void *info) + { + preempt_disable(); +- if (r4k_op_needs_ipi(type)) +- smp_call_function_many(&cpu_foreign_map, func, info, 1); ++ /* cpu_foreign_map and cpu_sibling_map[] undeclared when !CONFIG_SMP */ ++#ifdef CONFIG_SMP ++ if (r4k_op_needs_ipi(type)) { ++ struct cpumask mask; ++ ++ /* exclude sibling CPUs */ ++ cpumask_andnot(&mask, &cpu_foreign_map, ++ &cpu_sibling_map[smp_processor_id()]); ++ smp_call_function_many(&mask, func, info, 1); ++ } ++#endif + func(info); + preempt_enable(); + } |