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2016-07-15perf record: Read from overwritable ring bufferWang Nan
Drive the evlist->bkw_mmap_state state machine during draining and when SIGUSR2 is received. Read the backward ring buffer in record__mmap_read_all. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-12-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Setup backward mmap state machineWang Nan
Introduce a bkw_mmap_state state machine to evlist: .________________(forbid)_____________. | V NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY ^ ^ | ^ | | |__(forbid)____/ |___(forbid)___/| | | \_________________(3)_______________/ NOTREADY : Backward ring buffers are not ready RUNNING : Backward ring buffers are recording DATA_PENDING : We are required to collect data from backward ring buffers EMPTY : We have collected data from backward ring buffers. (0): Setup backward ring buffer (1): Pause ring buffers for reading (2): Read from ring buffers (3): Resume ring buffers for recording We can't avoid this complexity. Since we deliberately drop records from overwritable ring buffer, there's no way for us to check remaining from ring buffer itself (by checking head and old pointers). Therefore, we need DATA_PENDING and EMPTY state to help us recording what we have done to the ring buffer. In record__mmap_read_evlist(), drive this state machine from DATA_PENDING to EMPTY. In perf_evlist__mmap_per_evsel(), drive this state machine from NOTREADY to RUNNING when creating backward mmap. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-11-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Drop evlist->backwardWang Nan
Now there's no real user of evlist->backward. Drop it. We are going to use evlist->backward_mmap as a container for backward ring buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-10-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Map backward events to backward_mmapWang Nan
In perf_evlist__mmap_per_evsel(), select backward_mmap for backward events. Utilize new perf_mmap APIs. Dynamically alloc backward_mmap. Remove useless functions. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-9-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Introduce backward_mmap array for evlistWang Nan
Add backward_mmap to evlist, free it together with normal mmap. Improve perf_evlist__pick_pc(), search backward_mmap if evlist->mmap is not available. This patch doesn't alloc this array. It will be allocated conditionally in the following commits. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-8-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Extract common code in mmap failure processingWang Nan
In perf_evlist__mmap_per_cpu() and perf_evlist__mmap_per_thread(), in case of mmap failure, successfully created maps should be cleared. Current code uses two loops calling __perf_evlist__munmap() for each function. This patch extracts common code to perf_evlist__munmap_nofree() and use previous introduced decoupled API perf_mmap__munmap(). Now __perf_evlist__munmap() can be removed because of no user. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-7-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Record mmap cookie into fdarray private fieldWang Nan
Insetad of saving a index into fdarray entries private field, save the corresponding 'struct perf_mmap' pointer, and release them directly using perf_mmap__put(). Following commits introduce multiple mmap arrays to evlist. Without this patch, perf_evlist__munmap_filtered() is unable to retrive correct 'struct perf_mmap' pointer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-6-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf record: Decouple record__mmap_read() and evlist.Wang Nan
Perf evlist will have multiple mmap arrays. Update record__mmap_read(): it should read from 'struct perf_mmap' directly. Also, make record__mmap_read() ready to read from backward ring buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-5-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf evlist: Update mmap related APIs and helpersWang Nan
Currently, the evlist mmap related helpers and APIs accept evlist and idx, and dereference 'struct perf_mmap' by evlist->mmap[idx]. This is unnecessary, and force each evlist contains only one mmap array. Following commits are going to introduce multiple mmap arrays to a evlist. This patch refators these APIs and helpers, introduces functions accept perf_mmap pointer directly. New helpers and APIs are decoupled with perf_evlist, and become perf_mmap functions (so they have perf_mmap prefix). Old functions are reimplemented with new functions. Some of them will be removed in following commits. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-4-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15tools lib fd array: Allow associating a pointer cookie with each entryWang Nan
Add a 'ptr' field to fdarray->priv array. This feature will be used by following commits, which introduce muiltiple 'struct perf_mmap' arrays for different types of mapping. Because of this, during fdarray__filter(), a simple 'idx' is not enough. Add a pointer cookie that allows to directly associate a 'struct perf_mmap' pointer to an fdarray entry. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15tools: Simplify BITS_PER_LONG definePeter Zijlstra
Do it using (__CHAR_BIT__ * __SIZEOF_LONG__), simpler, works everywhere, reduces the complexity by ditching CONFIG_64BIT, that was being synthesized from yet another set of defines, which proved fragile, breaking the build on linux-next for no obvious reasons. Committer Note: Except on: gcc version 4.1.2 20080704 (Red Hat 4.1.2-55) Fallback to __WORDSIZE in that case... Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160715072243.GP30154@twins.programming.kicks-ass.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15Input: ts4800-ts - add missing of_node_put after calling of_parse_phandlePeter Chen
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-07-15perf evlist: Drop redundant evsel->overwrite indicatorArnaldo Carvalho de Melo
evsel->overwrite indicator means an event should be put into overwritable ring buffer. In current implementation, it equals to evsel->attr.write_backward. To reduce compliexity, remove evsel->overwrite, use evsel->attr.write_backward instead. In addition, in __perf_evsel__open(), if kernel doesn't support write_backward and user explicitly set it in evsel, don't fallback like other missing feature, since it is meaningless to fall back to a forward ring buffer in this case: we are unable to stably read from an forward overwritable ring buffer. Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-2-git-send-email-wangnan0@huawei.com Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15tools lib api fs: Use base 0 in filename__read_ullJiri Olsa
By using 0 for base, the strtoull() detects the base automatically (see 'man strtoull'). ATM we have just one user of this function, the cpu__get_max_freq function reading the "cpuinfo_max_freq" sysfs file. It should not get affected by this change. Committer note: This change seems motivated by this discussion: "[PATCH] [RFC V1]s390/perf: fix 'start' address of module's map" http://lkml.kernel.org/r/20160711120155.GA29929@krava I.e. this patches paves the way for filename__read_ull() to be used in a S/390 related fix. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Songshan Gong <gongss@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1468567797-27564-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf tools: Bail out at "--sort dcacheline" and cacheline_size not knownArnaldo Carvalho de Melo
There are cases where further work would be needed to overcome the fact that neither sysconf(_SC_LEVEL1_DCACHE_LINESIZE) nor /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size are available in some systems (Android, for instance), so bail out when such a situation takes place. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ho8d8g8mh0o2dri7ckcccafi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15perf tools: Just pr_debug() about not being able to read cacheline_sizeArnaldo Carvalho de Melo
So far the cacheline_size is only useful for the "dcacheline" --sort order, i.e. if that is not used, which is the norm, then the user shouldn't care that he is running this, say, on an Android system where sysconf(_SC_LEVEL1_DCACHE_LINESIZE) and the /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size sysfs file isn't available. An upcoming patch will emit an warning only for "--sort ...,dcacheline,...". Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Chris Phlipot <cphlipot0@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-580cnkvftunyvt9n7unsholi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-15drm/i915: Introduce Kabypoint PCH for Kabylake H/DT.Rodrigo Vivi
Some Kabylake SKUs are going to use Kabypoint PCH. It is mainly for Halo and DT ones. >From our specs it doesn't seem that KBP brings any change on the display south engine. So let's consider this as a continuation of SunrisePoint, i.e., SPT+. Since it is easy to get confused by a letter change: KBL = Kabylake - CPU/GPU codename. KBP = Kabypoint - PCH codename. Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96826 Link: http://patchwork.freedesktop.org/patch/msgid/1467418032-15167-1-git-send-email-rodrigo.vivi@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> (cherry picked from commit 22dea0be50b2eb0bafd3c82e1fb080113e0c889e) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidateTim Gore
This patch enables a workaround for a mid thread preemption issue where a hardware timing problem can prevent the context restore from happening, leading to a hang. v2: move to gen9_init_workarounds (Arun) v3: move to start of gen9_init_workarounds (Arun) Signed-off-by: Tim Gore <tim.gore@intel.com> Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465816501-25557-1-git-send-email-tim.gore@intel.com (cherry picked from commit a8ab5ed5e1bf856eceaab5579236de6f92822b9f) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidanceMika Kuoppala
Add this fbc related workaround for all gen9 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-28-git-send-email-mika.kuoppala@intel.com (cherry picked from commit d1b4eefdea6d63aa15321f539feec298d8aefdc1) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i195/fbc: Add WaFbcNukeOnHostModifyMika Kuoppala
Bspec states that we need to set nuke on modify all to prevent screen corruption with fbc on skl and kbl. v2: proper workaround name References: HSD#2227109, HSDES#1404569388 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-27-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 031cd8c85aefad31e7af91eba7bc4735a6dfcc79) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Add WaFbcWakeMemOnMika Kuoppala
Set bit 8 in 0x43224 to prevent screen corruption and system hangs on high memory bandwidth conditions. The same wa also suggest setting bit 31 on ARB_CTL. According to another workaround we gain better idle power savings when FBC is enabled. v2: use correct workaround name v3: split out overlapping wa for corruption avoidance (Ville) References: HSD#2137218, HSD#2227171, HSD#2136579, BSID#883 Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-26-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 303d4ea522e8672a1b62d968a5b6764929adc292) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Add WaFbcTurnOffFbcWatermarkMika Kuoppala
According to bspec this prevents screen corruption when fbc is used. v2: This workaround has a name, use it (Ville) v3: remove bogus gen check on ilk/vlv wm path (Ville) References: HSD#2135555, HSD#2137270, BSID#562 Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-25-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 0f78dee6f06a9399d4bdf79575094cc761b872ac) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaClearSlmSpaceAtContextSwitchMika Kuoppala
This workaround for bdw and chv, is also needed for kbl A0. References: HSD#1911519, BSID#569 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-24-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 066d462888514af727008a450f4078b1a23d5cbe) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Add WaEnableChickenDCPRMika Kuoppala
Workaround for display underrun issues with Y & Yf Tiling. Set this on all gen9 as stated by bspec. v2: proper workaround name References: HSD#2136383, BSID#857 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-22-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 590e8ff04bc0182dce97228e5e352d6413d80456) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharingMika Kuoppala
This is needed for all kbl revision. v2: Don't add revid checks to generic gen9 init (Arun) References: HSD#2135593 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-21-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 954337aa96a31f6d4baf1e40ac219fbb1b1d92f4) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableGafsUnitClkGatingMika Kuoppala
We need to disable clock gating in this unit to work around hardware issue causing possible corruption/hang. v2: name the bit (Ville) v3: leave the fix enabled for 2227050 and set correct bit (Matthew) v4: Split out the skl part in separate commit for easier backport References: HSD#2227156, HSD#2227050 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-20-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 4de5d7ccbccc88d2f7b1bcdc2180196ded7db8b8) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaForGAMHangMika Kuoppala
Add this workaround for A0 and B0 revisions References: HSD#2226935 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-19-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 0b2d0934edceff9905b1202d0e7e91f1b6228485) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915: Add WaInsertDummyPushConstP for bxt and kblMika Kuoppala
Add this workaround for both bxt and kbl up to until rev B0. References: HSD#2136703 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-16-git-send-email-mika.kuoppala@intel.com (cherry picked from commit ad2bdb44b19529ba992bd0b7667e91b14fe9a9ee) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableDynamicCreditSharingMika Kuoppala
Bspec states that we need to turn off dynamic credit sharing on kbl revid a0 and b0. This happens by writing bit 28 on 0x4ab8. References: HSD#2225601, HSD#2226938, HSD#2225763 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-15-git-send-email-mika.kuoppala@intel.com (cherry picked from commit c0b730d572ea00d427f6112b17982c6b9d5e97bb) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableGamClockGatingMika Kuoppala
According to bspec we need to disable gam unit clock gating on on kbl revids A0 and B0. References: HSD#2226858, HSD#1944358 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-14-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 8aeb7f624fbf8a68a9c67f831d4158a0f80ea920) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Enable must set chicken bits in config0 regMika Kuoppala
The bspec states that these must be set in CONFIG0 for all gen9. v2: rebase v3: fix spacing (Matthew) References: HSD#2134995 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-13-git-send-email-mika.kuoppala@intel.com (cherry picked from commit b033bb6d5d3a0e51d56b3ba929a8db4e18da0892) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableLSQCROPERFforOCLMika Kuoppala
Extend the scope of this workaround, already used in skl, to also take effect in kbl. v2: Fix KBL_REVID_E0 (Matthew) References: HSD#2132677 Cc: Matthew Auld <matthew.william.auld@gmail.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-12-git-send-email-mika.kuoppala@intel.com (cherry picked from commit fe90581987cd5fadd2942f59f8511bcb39fdec34) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableSDEUnitClockGatingMika Kuoppala
Add this workaround until upto kbl revid B0. References: HSD#1802092 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-10-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 9498dba7b4ffe40a1e2b23d7718b77e49841248f) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0Mika Kuoppala
Add this workaround for kbl revid A0 only. v2: rebase v3: carve out a non related workaround (Chris) References: HSD#1911714 Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-9-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 8401d42fd5adf709281e1700194805f393b49573) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaEnableGapsTsvCreditFixMika Kuoppala
We need this crucial workaround from skl also to all kbl revisions. Lack of it was causing system hangs on skl enabling so this is a must have. v2: Don't add revid checks to gen9 init workarounds (Arun) References: HSD#2126660 Cc: Arun Siluvery <arun.siluvery@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-8-git-send-email-mika.kuoppala@intel.com (cherry picked from commit e587f6cb0af140f3c0ea794d8616eb9a29969983) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915: Mimic skl with WaForceEnableNonCoherentMika Kuoppala
Past evidence with system hangs and hsds tie WaForceEnableNonCoherent and WaDisableHDCInvalidation to WaForceContextSaveRestoreNonCoherent. Documentation states that WaForceContextSaveRestoreNonCoherent would not be needed on skl past E0 but evidence proved otherwise. See commit <510650e8b2ab> ("drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revs"). In this scope consider kbl to be skl with a bigger revision than E0 so play it safe and bind these two workarounds to the WaForceContextSaveRestoreNonCoherent, and apply to all gen9. v2: fix comment (Matthew) References: HSD#2134449, HSD#2131413 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-7-git-send-email-mika.kuoppala@intel.com (cherry picked from commit bbaefe72a00c93c6ec12e029019681e3f7d7de7a) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Always apply WaForceContextSaveRestoreNonCoherentMika Kuoppala
The revision id range for this workaround has changed. So apply it to all revids on all gen9. References: HSD#2134449 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-6-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 5b0e3659296cc4a1484e60640ef10780194a195b) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add WaSkipStolenMemoryFirstPage for A0Mika Kuoppala
We need this for kbl a0 boards. Note that this should be also for bxt A0 but we omit that on purpose as bxt A0's are out of fashion already. References: HSD#1912158, HSD#4393097 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-5-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 6e4f10c33a8bd0df4412bc31c0f11930e0228123) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Add REVID macroMika Kuoppala
Add REVID macro for kbl to limit wa applicability to particular revision range. Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-4-git-send-email-mika.kuoppala@intel.com (cherry picked from commit c033a37cd42c1b5492d95bfbc8c0891088e04b57) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/kbl: Init gen9 workaroundsMika Kuoppala
Kabylake is part of gen9 family so init the generic gen9 workarounds for it. v2: rebase Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-3-git-send-email-mika.kuoppala@intel.com (cherry picked from commit e5f81d65ac5a04020d790caf63b2324730ba0277) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/skl: Add WaDisableGafsUnitClkGatingMika Kuoppala
We need to disable clock gating in this unit to work around hardware issue causing possible corruption/hang. v2: name the bit (Ville) v3: leave the fix enabled for 2227050 and set correct bit (Matthew) References: HSD#2227156, HSD#2227050 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-2-git-send-email-mika.kuoppala@intel.com (cherry picked from commit eee8efb02a0f9284d85e6b3688f944ca765d7ad3) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateCleararun.siluvery@linux.intel.com
Kernel only need to add a register to HW whitelist, required for a preemption related issue. Reference: HSD#2131039 Reviewed-by: Jeff McGee <jeff.mcgee@intel.com> Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465203169-16591-1-git-send-email-arun.siluvery@linux.intel.com (cherry picked from commit 6bb6285582e0cf9b3a8440e0e714aae5f66d9ce2) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15drm/i915/psr: Implement PSR2 w/a for gen9Daniel Vetter
Found this while browsing Bspec. Looks like it applies to both skl and kbl. v2: Also for bxt (Art). Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Sonika Jindal <sonika.jindal@intel.com> Cc: Durgadoss R <durgadoss.r@intel.com> Cc: "Pandiyan, Dhinakaran" <dhinakaran.pandiyan@intel.com> Cc: "Runyan, Arthur J" <arthur.j.runyan@intel.com> Reviewed-by: Sonika Jindal<sonika.jindal@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1463642060-30728-1-git-send-email-daniel.vetter@ffwll.ch (cherry picked from commit dc00b6a07c2206e7b7dbcbeff856049264c40faa) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15x86/apic: Remove the unused struct apic::apic_id_mask fieldWei Jiangang
The only user verify_local_APIC() had been removed by commit: 4399c03c6780 ("x86/apic: Remove verify_local_APIC()") ... so there is no need to keep it. Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: boris.ostrovsky@oracle.com Cc: bsd@redhat.com Cc: david.vrabel@citrix.com Cc: jgross@suse.com Cc: konrad.wilk@oracle.com Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1468463046-20849-1-git-send-email-weijg.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15Merge branch 'linus' into x86/apic, to refresh the branchIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15x86/syscalls: Add compat_sys_preadv64v2/compat_sys_pwritev64v2H.J. Lu
Don't use the same syscall numbers for 2 different syscalls: 534 x32 preadv compat_sys_preadv64 535 x32 pwritev compat_sys_pwritev64 534 x32 preadv2 compat_sys_preadv2 535 x32 pwritev2 compat_sys_pwritev2 Add compat_sys_preadv64v2() and compat_sys_pwritev64v2() so that 64-bit offset is passed in one 64-bit register on x32, similar to compat_sys_preadv64() and compat_sys_pwritev64(). Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/CAMe9rOovCMf-RQfx_n1U_Tu_DX1BYkjtFr%3DQ4-_PFVSj9BCzUA@mail.gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15x86/smp: Remove unnecessary initialization of thread_info::cpuAndy Lutomirski
It's statically initialized to zero -- no need to dynamically initialize it to zero as well. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/6cf6314dce3051371a913ee19d1b88e29c68c560.1468527351.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15x86/smp: Remove stack_smp_processor_id()Andy Lutomirski
It serves no purpose -- raw_smp_processor_id() works fine. This change will be needed to move thread_info off the stack. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/a2bf4f07fbc30fb32f9f7f3f8f94ad3580823847.1468527351.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15x86/uaccess: Move thread_info::addr_limit to thread_structAndy Lutomirski
struct thread_info is a legacy mess. To prepare for its partial removal, move thread_info::addr_limit out. As an added benefit, this way is simpler. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/15bee834d09402b47ac86f2feccdf6529f9bc5b0.1468527351.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-15x86/dumpstack: Rename thread_struct::sig_on_uaccess_error to sig_on_uaccess_errIngo Molnar
Rename it to match the thread_struct::uaccess_err pattern and also because it was too long. Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-06 04:56:42 +0000